Tektronix 2440 User Manual Download Page 127

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Theory of Operation— 2440 Service

signal applied, the channel resistance of Q514 is minimum,

setting the gain of the AGC Amplifier to maximum. With

maximum gain and no signal, the feedback loops of the

Back-Porch Clamp and the Sync-Tip Clamp set the circuit

gain as if an average “ground” signal were being received.

The composite-video input signal is applied to one input

of the differential AGC Amplifier at pin 3 of U612 and to

Dc-Offset Amplifier U710B via a low-pass filter composed

of R714 and C714. The low-pass filter averages the signal

at the input of U710B so that only the average (dc) signal

level appears at the output of U710B and on pin 11 of

U612. Since the input signal swings about this average

level, the AGC Amplifier output signal will be centered in

its linear amplification region.

The base-emitter bias of the differential output transis

tors within U612 are controlled by the NEG-SYNC signal

from Video Option Control Register U750 (diagram 20).

When the NEG-SYNC bin is set HI, the transistors con
nected to pins 2 and 9 will be biased on, with those at pins

6 and 13 biased off. When NEG-SYNC is set LO, the con
ducting transistors are switched, and the polarity of the

output

signal

driving

transistor

Q612

inverted.

Common-base transistor Q612 level shifts the output sig
nal from the AGC Amplifier and provides voltage gain to

drive U610D.

FIXED GAIN AMPLIFIER. The Fixed Gain Amplifier cir

cuit, formed by U610A, B, and C, Q502, and U710C, pro

vides additional gain to the video signal from the AGC

Amplifier. The Trigger Back-Porch Clamp circuit monitors

the back-porch level of the resulting signal and injects an

offsetting dc level into the Fixed Gain Amplifier via U710C

to shift that level to approximately + 4 .5 V.

Emitter-follower U610D drives one input of a differential

amplifier made up of U610A and U610B, while the other

input is driven by the output signal of U710C. Transistor

U610C and its associated components form the current

source for the amplifier. The collector output of U610B

drives the input of the Sync Pickoff Comparator.

Transistor Q502 and its associated circuitry act as a

start-up circuit that monitors the dc output level of U610B

and applies an offset voltage to pin 10 of U710C should

that level go below zero volts. This occurs when going

from a “no-signal” or low-signal condition to a strong sig
nal. If the dc output level goes below ground, diode CR612

will become forward biased, shutting off Q502. With Q502

off, the - 1 5 V supply applied via resistor R506 will for
ward bias CR606 to charge C713 negatively. This pulls the

output voltage of U710C negative and decreases base

drive to U610B. Reducing base drive reduces the collector

current so that the collector voltage of U610B returns

positive until the above zero-volt output level is restored

and CR612 becomes biased off.

SYNC PICKOFF COMPARATOR. The Sync-Pickoff

Comparator, composed of Q504 and Q510, switches when

the amplitude of a sync pulse crosses the comparator

threshold level. The switching threshold is set by the bias
ing resistors of Q510, R408 and R409, to about 50% of

the sync level to eliminate any video information. The out
put signal from the collector of Q510 is the composite of

all detected sync pulses, and the output of Q504 is an

inverted replica of that signal.

SYNC-TIP CLAMP AND AUTOMATIC GAIN CON

TROL. Transconductance Amplifier U510, in conjunction

with the AGC Amplifier, is used to clamp the sync-tip level.

Amplifier U510 is enabled by the bias current supplied by

Q 512 when sync tips turn that transistor on. This amplifier

acts as a weak operational amplifier to set the sync-tip

level constant when Q512 is conducting to supply bias

current to pin 5 of U510.

The Sync-Tip Clamp holds the negative-sync tips at

about + 0 .5 V, so the resulting sync pulses are approxi
mately 4 V in amplitude. Anytime the negative-sync tips at

the collector of U610B go below about + 0 .5 V, input pin 3

of U510 will go below the ground reference at the other

input. This causes the output of U510 to go low when

enabled, and C512 begins discharging slowly toward

- 1 5 V. This decreasing voltage is applied to the gate of

FET Q514 to increase the channel resistance and

decrease the gain of the AGC Amplifier. Since U510 is a

transconductance amplifier, it can change the voltage

across C514 only a small amount during each sync pulse,

and a few horizontal-line cycles are needed to reduce the

gain of the AGC Amplifier to the new operating level.

Between sync tips, when amplifier U510 is disabled, the

long time constant of R610 and C512 holds the bias for

Q514 (and thus gain of the AGC Amplifier) nearly

constant.

Diode CR502 acts to reduce AGC Amplifier gain quickly

if the negative-sync-tip amplitude at the collector of U610B

drops below - 0 . 8 V. If the diode becomes forward biased,

as  it  might  should  the  signal  amplitude  go  suddenly  nega
tive,  Q510  will  be  turned  on  for  a  longer  time  until  the  sig
nal  amplitude  returns  to  a  lower  level.  Amplifier  U510  can

then increase the channel resistance of Q514 more quickly

to reduce gain of the AGC Amplifier and return the sync-

tip amplitude to the correct level.

TRIGGER BACK-PORCH CLAMP. The Trigger Back-

Porch Clamp circuit formed by U504, U410A, and associ
ated components, is enabled for a short time during each

horizontal-sync pulse immediately following the sync tip

(during the back-porch time). The output of the Trigger

Back-Porch Clamp is used to hold the back-porch level of

the composite-video signal to a predetermined dc level.

This, in combination with the action of the Sync-Tip

Clamp, produces sync pulses that are approximately 4 V

in amplitude.

3 -8 5

Summary of Contents for 2440

Page 1: ...structions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to the Safety Summary prior to performingservice Please check for change information at the rear of this manual First Printing July 1988 Revised Printing July 1993 ...

Page 2: ...200000 J300000 H 700000 Tektronix Inc Beaverton Oregon USA Tektronix United Kingdom Ltd London Sony Tektronix Japan Tektronix Holland NV Heerenveen The Netherlands Instruments manufactured for Tektronix by external vendors outside the United States are assigned a two digit alpha code to identify the country of manufacture e g JP for Japan HK for Hong Kong IL for Israel etc Tektronix Inc P O Box 50...

Page 3: ... any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from imprope...

Page 4: ......

Page 5: ...AILED CIRCUIT DESCRIPTION 3 15 SYSTEM PROCESSOR 3 15 WAVEFORM PROCESSOR SYSTEM 3 22 Page FRONT PANEL PROCESSOR 3 28 FRONT PANEL CONTROLS 3 30 SYSTEM DAC AND ACQUISITION CONTROL REGISTERS 3 31 SYSTEM DAC cont AND AUXILIARY FRONT PANEL 3 33 SYSTEM CLOCKS 3 35 TIME BASE CONTROLLER AND ACQUISITION MEMORY 3 39 ATTENUATORS AND PREAMPLIFIERS 3 43 PEAK DETECTORS AND CCD CLOCK DRIVERS 3 45 TRIGGERS AND PHA...

Page 6: ...1 MAINTENANCE AIDS 6 12 INTERCONNECTIONS 6 12 TRANSISTORS AND INTEGRATED CIRCUITS 6 12 SOLDERING TECHNIQUES 6 14 REMOVAL AND REPLACEMENT PROCEDURE 6 15 Page DIAGNOSTICS AND INTERNAL CALIBRATION ROUTINES 6 25 INTRODUCTION 6 25 OVERVIEW 6 25 CALIBRATION ROUTINES 6 25 DIAGNOSTIC ROUTINES 6 27 DIAGNOSTICS OPERATION VIA THE GPIB INTERFACE 6 34 DIAGNOSTIC PROCEDURES 6 35 Section 7 OPTIONS AND ACCESSORIE...

Page 7: ...Vertical and Horizontal Gain Offset and Vector Compensation adjustment pattern 5 5 5 3 Display 6 Integrator Time adjustment pattern 5 6 5 4 SN B010250 Above CH 1 and CH 2 CCD Clock Adjustments shown centered as after doing part b 5 7 5 4 SN B010249 Below CH 1 and CH 2 CCD Clock Adjustments shown centered as after doing part b 5 8 5 5 CCD counts display and CM adjustment menu 5 8 5 6 CCD sides 1 4 ...

Page 8: ...9 9 10 9 11 9 12 Color codes for resistors and capacitors Semiconductor lead configurations Locating components on schematic diagrams and circuit board illustrations Detailed 2440 Block Diagram Detailed 2440 Block Diagram cont A12 Processor Board A13 Side Board A14 Front Panel Board A10 Main Board A30 A31 A32 and A 33 G ain Cell Boards A l l Timebase Display Board A17 High Voltage Board A16 Low Vo...

Page 9: ...Lines CC3 through CCO 3 55 3 7 Holdoff Delay Range for Current Source vs Charging Capacitor Combinations 3 59 3 8 Side Board Address Decoding 3 60 4 1 Test Equipment Required 4 2 4 2 Accuracy Limits CH 1 and CH 2 CURSOR VOLTS Readout and A and B TRIGGER LEVEL Readouts 4 10 4 3 Minimum Display Level for CH 1 or CH 2 Triggering 4 19 4 4 Minimum Signal Level for EXT1 or EXT2 Triggering 4 21 6 1 Relat...

Page 10: ... of the protective ground connection all accessi ble conductive parts including knobs and controls that may appear to be insulated can render an electric shock in This Manual This symbol indicates where applicable cau tionary or other information is to be found For maximum input voltage see Table 1 1 as Marked on Equipment DANGER High voltage Protective gound earth terminal ATTENTION Refer to manu...

Page 11: ...angerous voltages exist at several points in this product To avoid personal injury do not touch exposed connec tions or components while power is on Disconnect power before removing protective panels sol dering or replacing components P ow er Source This product is intended to operate from a power source that does not apply more than 250 volts rms bwetween the supply conductors or between either s...

Page 12: ......

Page 13: ... system operating modes and auxiliary functions are described in Section 5 Controls Connectors and Indicators of the Operators manual included with this instrument and the Getting Acquainted procedure in Section 1 of that manual fami liarizes the user with menu operation VERTICAL SYSTEM The two vertical channels have calibrated deflection factors from 2 mV to 5 V per division in a 1 2 5 sequence o...

Page 14: ...n all called up VERTICAL MODES Since an acquisition depends on the acquisition mode in effect many of the scope operating features are altered in SINGLE SEQ A complete description of this mode is discussed in Controls Connectors and Indicators in Section 5 of the Operators manual The user has a choice of trigger points within the acquired waveform record by selecting the amount of pre trigger data...

Page 15: ...e source and destination of waveforms to be saved may be user designated Assignment can be made to save either chan nel 1 or channel 2 or the results of an addition or multipli cation of the two channels to any REF memory or to move a stored reference from one REF memory to another Reference waveforms may also be written into a REF memory location via the GPIB interface The scope is fully controll...

Page 16: ...onix Field Office PERFORMANCE CONDITIONS The following electrical characteristics Table 1 1 apply when the scope has been calibrated at an ambient tem perature between 2 0 C and 30 C has had a warmup period of at least 20 minutes and is operating at an ambient temperature between 15 C and 5 5 C unless otherwise noted Items listed in the Performance Requirements column are verifiable qualitative or...

Page 17: ... steps 2 mV per division to 5 V per division Accuracy Normal and Average Modes Within 2 1 DL at any VOLTS DIV setting for a signal 1 kHz or less contained within 75 DL 3 divisions of center when a SELF CAL has been performed within 1 5 C of the operating temperature Measured on a four or five division signal with VOLTS or V T cursors UNITS set to delta volts Envelope Mode Add 1 to Normal Mode spec...

Page 18: ...ked with probe in manual 15 C to 3 0 C 3 0 C to 5 5 C Dc to 300 MHz Upper Bandwidth Limit reduced by 2 5 MHz for each C above 30 C a Envelope Mode at SEC DIV settings of 0 5 fis or slower Dc to 150 MHz using standard accessory probe internal 50 12 termination or external 50 12 termination on 1 M12 input 3 4 7 dB Bandwidth Normal or Average Mode Envelope Mode at SEC DIV settings of 0 2 ns or faster...

Page 19: ... greater at 300 MHz for VOLT DIV settings from 20 mV DIV to 500 mV DIV 25 1 or greater at 300 MHz for VOLT DIV settings of 5 mV DIV and 10 mV DIV Acquired Channel 2 Signal Delay with Respect to Channel 1 Signal at Full Bandwidth 250 ps a Input R and C 1 Mfi Resistance 1 Mfl 0 5 a In each attenuator the input resistance of all VOLTS DIV positions is matched to within 0 5 a Capacitance 15 pF 2 pF a ...

Page 20: ...division with INVERT off when Self Cal has been done within 5 C of the operating temperature Gain Match between NORMAL and SAVE 3 DLs for positions within 5 divisions from center Low Frequency Linearity Normal or Average Mode 3 DLs or less compression or expansion of a two division center screen signal when positioned anywhere within the acquisition window 20 MHz Bandwidth Limiter 3 dB Bandwidth 1...

Page 21: ...ions by two Minimum P P Signal Amplitude for Stable Triggering3 from EXT TRIG 1 or EXT TRIG 2 Source A Trigger EXT Gain 1 DC Coupled 17 5 mV from DC to 50 MHz increasing to 50 mV at 300 MHz NOISE REJ Coupled 60 mV or less from DC to 50 MHz increasing to 150 mV at 300 MHz AC Coupled 17 5 mV from 60 Hz to 50 MHz increasing to 50 mV at 300 MHz Attenuates signals below 60 Hz HF REJ Coupled 25 mV from ...

Page 22: ... Maximum Input Voltage 400 V dc peak ac 800 V p p ac at 10 kHz or less 3 LEVEL Control Range Channel 1 or Channel 2 Source 1 8 divisions x VOLTS DIV setting 3 EXT TRIG 1 or EXT TRIG 2 Source EXT GAIN 1 0 9 volt 3 EXT GAIN 5 4 5 volts 3 LEVEL Readout Accuracy for triggering signals with transition times greater than 20 ns Channel 1 or Channel 2 Source DC Coupled 15 C to 3 5 C Within 3 of setting 3 ...

Page 23: ...ed Within 3 of setting 4 of p p signal 10 mV 0 5 mV X probe attenuation factor NOISE REJ Coupled Add 3 0 mV to DC Coupled specifications EXT GAIN 5 DC Coupled Within 3 of setting 4 of p p signal 50 mv 0 5 mV X probe attenuation factor NOISE REJ Coupled Add 150 mV to DC Coupled specifications Variable A Trigger Holdoff A SEC DIV MIN HOB MAX HO 2 ns 5 ns 10 ns 20 ns 2 4 ms 9 15 ms 50 ns 100 ns 200 n...

Page 24: ...2 s 200 ms 2 4 s 500 ms 9 15 s 1 s 2 s 5 10 s 5 s SLOPE Selection Conforms to trigger source and ac power source waveforms Trigger Position Jitter P P Checked in NORMAL ACQUIRE mode with a 5 division step having less than or equal to 1 ns rise time A Mode B Mode TRIG AFTER SEC DIV 100 ns and slower 0 04 x SEC DIV setting313 SEC DIV 50 ns and faster 0 04 x SEC DIV setting 200 psa b B Mode RUNS AFTE...

Page 25: ...ng to 2 0 divisions at 100 MHz 3 0 divisions at 100 MHz in ADD mode Attenuates sig nals below 60 Hz HF REJ Coupled 1 0 division from DC to 30 kHz Attenuates signals above 30 kHz LF REJ Coupled 1 0 division from 80 kHz to 50 MHz increasing to 2 0 divisions at 100 MHz 3 0 divisions at 100 MHz in ADD mode Attenuates sig nals below 80 kHz EXT TRIG 1 or EXT TRIG 2 Source Ext Gain 1 DC Coupled 35 mV fro...

Page 26: ...SEC DIV 50 ns and faster REPET ON 16 ns to 1 05 ms a REPET OFF 8 ns to 524 ms a SEC DIV 50 fis to 100 ns 0 08 x B SEC DIV to 65 536 x 0 08 x B SEC DIV a SEC DIV 100 ns and slower 0 04 x B SEC dIV to 65 536 x 0 04 x B SEC DIV a Delay Time Resolution B RUNS AFTER DELAY SEC DIV 50 us and faster 0 08 x B SEC DIV a SEC DIV 100 ns and slower 0 04 x B SEC DIV a B TRIGGERABLE AFTER DELAY SEC DIV 50 ns and...

Page 27: ...e Memory irretrievably deletes all saved waveforms on screen or in Reference memories all front panel settings and all sequences stored in Sequencer memory To further assure that no proprietary data remains stored Erase Memory also clears all remaining NV RAM except those locations storing calibration constants calibration status results and data for the real time clock The instrument is left with...

Page 28: ... circuit load with A SEC DIV switch set to 1 ms 8 m A 1 5 a Repetition Period A SEC DIV Calibrator Calibrator Div Cycle3 Setting3 Frequency3 Period3 2 ns 5 MHz 200 ns 100 5 ns 40 10 ns 20 20 ns 10 50 ns 4 100 ns 2 200 ns 1 500 ns 1 MHz i ns 2 1 1S 1 2 is 0 5 5 is 50 kHz 20 ns 4 10 J S 2 20 J S 1 50 ns 5 kHz 200 ns 4 100 1S 2 200 ns 1 500 ns 500 Hz 2 ms 4 1 ms 2 2 ms 1 5 ms 50 Hz 20 ms 4 10 ms 2 20...

Page 29: ...age LO Load of 4 mA or Less 0 5 V or less 3 50 S i Load to Ground 0 15 V or less 3 SEQUENCE OUT STEP COMPLETE Outputs Logic Polarity Negative true HI to LO transition indicates the event occurred Output Voltage HI Load of 400 ixA or less 2 5 V to 3 5 V 3 50 fi Load to Ground 0 45 V or greater3 Output Voltage LO Load of 4 mA or less 0 5 V or less 3 50 0 Load to Ground 0 15 V or less 3 SEQUENCE IN I...

Page 30: ...ursor is at center screen 3 Vector Response NORMAL Mode Step Aberration 4 4 4 p p Fill Edges of filled regions match reference lines within 0 1 division ENVELOPE Mode Fill Less than 1 change in p p amplitude of a 6 division filled ENVELOPE waveform when switching vectors ON and OFF Waveform and Cursor Display Horizontal Resolution Electrical One part in 1024 10 bit Calibrated for 100 points per di...

Page 31: ...ical standard instrument 160 watts 250 VA a Maximum fully optioned instrument 200 watts 300 VA Primary Grounding0 Type test 0 1 fi maximum Routine test to check grounding con tinuity between chassis ground and protective earth ground Performance Requirement not checked in the manual cRoutine test is with ROD L EPA Electronic Model 100AV Hi Pot Tester This tests both the Primary Circuit Dielectric ...

Page 32: ... of 0 025 inch 0 64 mm p p 4 g at 55 Hz with frequency varied from 10 Hz to 55 Hz in one minute sweeps Hold 10 minutes at each major resonance or if none exist hold 10 minutes at 55 Hz 75 minutes total test time Shock Operating and Nonoperating 50 g half sine 11 ms duration three shocks on each face for a total of 18 shocks Transit Drop not in shipping package 12 inch 300 mm drop on each comer and...

Page 33: ...ackmounted instrument meets or exceeds the requirements of MIL T 28800C with respect to Type III Class 5 Style D equipment with the rackmounting rear support kit installed Refer to the Standard Instrument Environmental Specification for the remaining performance requirements Instruments will be capable of meeting or exceeding the requirements of Tektronix Standard 062 2853 00 class 5 Temperature o...

Page 34: ...in Depth With Front Cover 479 mm 18 86 in With Handle Extended 550 mm 21 65 in Cooling Forced air circulation no air filter Finish Tektronix Blue vinyl clad material on aluminum cabinet Construction Aluminum altoy plastic composite chassis spot molded Plastic laminate front panel Glass laminate circuit boards RACKMOUNTING Rackmounting Conversion Kit Weight 4 0 kg 8 8 lbs Domestic Shipping Weight 6...

Page 35: ... Wave Flatness Field Rate 5 mV div to 20 mV div 1 1 p p at 60 Hz with input signal of 0 1 V 50 mV div 1 1 p p at 60 Hz with input signal of 1 0 V With fast rise step rise time 1 ns or less 1 MS2 dc input coupling an external 50 S t termination and VARIABLE VOLTS DIV set to CAL Exclude the first 20 ns following the step transition and exclude the first 30 ns when 20 MHz BW LIMIT is set Line Rate 5 ...

Page 36: ... Sync 0 6 divisions Peak signal amplitude within 18 divisions of input ground reference EXT TRIG 1 or EXT TRIG 2 EXT GAIN 1 Composite Video 60 mV Composite Sync 30 mV Peak signal amplitude within 0 9 V from input ground reference EXT GAIN 5 Composite Video 300 mV Composite Sync 150 mV Peak signal amplitude within 4 9 V from input ground reference Performance Requirement not checked in manual bA st...

Page 37: ...Specification 2440 Service Dimensions are in inches mm 4918 39 1 25 Figure 1 1 Dimensional drawing ...

Page 38: ......

Page 39: ...ify that the LINE VOLTAGE SELECTOR switch located on the rear panel see Figure 2 1 is set for the correct nominal ac input source voltage To convert the instrument for operation from one line voltage range to the other move the LINE VOLTAGE SELECTOR switch to the correct nominal ac source voltage setting see Table 2 1 The detachable power cord may have to be changed to match the particu lar power ...

Page 40: ...4 0 V 10A 230V 18 0V to 2 50V 5A 250V A G C 3 A G F ast blow UL 198 6 A G C 3 A G A S C l 12 IEC 127 O ption A 4 N orth A m e rican 2 40V 15A 2 30V 18 0V to 2 50V 5A 2 50V A G C 3 A G F ast blow UL 198 6 A G C 3 A G A N S I C 7 3 2 0 N E M A 6 1 5 P IEC 8 3 U L 198 6 O ption A 5 S w itze rla n d 2 2 0 V 6A 2 3 0 V 180V to 250V 5A 250V A G C 3 A G F ast blow UL 198 6 A G C 3 A G SEV IEC 127 A 6A Ty...

Page 41: ...ll enter the Scope mode in the either ACQUIRE or SAVE Storage mode depending on the mode in effect when it was powered off If tests are failed the scope displays the Extended Diagnostics menu If the failure is in the range of 1000 5300 and the message HARDWARE PROBLEM SEE SERVICE MANUAL is displayed with the menu see Diagnostics in Section 6 for more information If the failure is in 1000 5300 rang...

Page 42: ...tarily interrupted starting the power off sequence but is reestablished before the sequence completes the scope will redo the power on procedure If the scope is in the middle of a waveform acquisition when power interruption occurs the waveform data will not be saved and the invalid waveform data display will be seen when power on has completed Press ACQUIRE to restart the acquisition and obtain v...

Page 43: ...ic diagram number associated with each description is identified in the text and is shown on the block diagrams For best understanding of the circuit being described refer to the appropriate schematic diagram and the block diagrams The order of discussion in the circuit descriptions follows the schematic diagram number order INTEGRATED CIRCUIT DESCRIPTIONS Digital logic circuits perform most of th...

Page 44: ...quisition system Common mode adjust circuitry on the output of the Peak Detectors is used to control the overall gain of the Peak Detector CCD acquisition subsystem Using digital signals to the DAC system analog voltages are generated that set the gain of the Common mode adjust amplifiers These amplifiers monitor the dc common mode level of the Peak Detector outputs and match it to the control gai...

Page 45: ... PANEL HMMIO SYSTEM PROCESSOR A SELECTS AND 1 R W TO 1 SYSTEM 07 r MUX SELECTS AND SHIFT CLOCKS SWITCHES FRONT PANEL PROCESSOR POTS S TRIGGER LEDS TRIG D READY SYSTEM OAC 5 5 ACC ACQUISITION CONTROL REGISTERS IT DIGITAL ACQUISITION CONTROL DATA TO 8 Z INT LV POWER SUPPLY LV REGULATORS DC POWER TO ALL BLOCKS 6603 35 3 3 Figure 3 1 Simplified block diagram ...

Page 46: ...yP via the Bus Connect circuitry for I O operations The Bus Connect circuitry includes logic gating that arbitrates when the Waveform iiP memory space RAM and addressable devices are under control of the System yP The System y P may gain control by a BUS REQUEST to which the Waveform y P issues a BUS GRANT signal or if the Waveform yP is held reset the System y P issues a BUSTAKE signal The BUSTAK...

Page 47: ...ng for a control to change The Sys tem fiP is then free to carry on with other functions Front Panel diagram 4 and Auxiliary Front Panel diagram 6 All the buttons and knobs of the Front Panel and Auxili ary Front Panel are soft controls and do not directly activate a circuit function This fact allows the switch func tions and menu labels to be changed especially the bezel buttons of the Auxiliary ...

Page 48: ...fferent triggers repetitive sampling Two ramp generators are used so two time measurements are made The System uP will determine which measurement is the one actually used The RAMP and RAMP signals from the Trigger cir cuits control the start and stop of the ramp signals while the SLRMP1 and SLRMP2 signals control switching between the fast charging current source and slow discharging current sour...

Page 49: ...nd it may be supplied to an external device via the WORD TRIG OUT connector on the rear panel Three BNC connectors comprise a third interface which is used to help control the AutoStep Sequencer SEQUENCE IN is an input that accepts TTL compatible signals for starting a sequence and stepping a paused sequence SEQUENCE OUT is an output that issues a TTL compatible signal upon the completion of a seq...

Page 50: ...m and the Schematic Diagrams as needed while reading the following description INPUT SIGNAL CONDITIONING AND ANALOG SAMPLING Signals applied to the CH 1 and CH 2 input connectors are coupled to their respective attenuators The CH 1 and CH 2 attenuators diagram 9 are settable for IX 10X and 100X attenuation with input coupling mode choices of AC DC and GND Input termination resistance of either 1 M...

Page 51: ... at 62 5 MHz but receives its samples on clocks 90 degrees out of phase a maximum sampling rate of 250 megasamples per second is produced using only a 16 ns clocking rate A second sampling method called the Short Pipeline mode uses only two sides of each CCD and samples only two of the output signal pairs from the Peak Detectors FISO and Short Pipeline analog sampling modes are both discussed late...

Page 52: ...point in the waveform data record The System jtP writes data control bits defining the Trigger Logic Array operating mode to the internal registers of the Trigger Logic Array via the Acquisition Control Registers When the Trigger Logic Array determines that the addi tional triggering conditions are also met the Time Base Controller is gated via the CCD Phase Clock Array and the post trigger sample...

Page 53: ...setting divided by 50 fis i e four clock cycles at a SEC DIV setting of 200 ns Therefore the samples saved in the Acquisition Memory in Short Pipeline mode produce a constant 50 samples per horizontal division when displayed regardless of the SEC DIV setting The remainder of the Short Pipeline save operation is similar to a FISO save The Acquisition Memory Address Counter is incremented by the clo...

Page 54: ...tches This action turns over the gating of that clock to the Envelope Min Max Comparators diagram 15 With the 4 MHz clock ungated the CCD Data Clocks will continue to control the enabling of the outputs of the acquisition latches as described but the new data bytes are not continually clocked into the latches The result is that only the data bytes clocked in by the Envelope Min Max Comparators are...

Page 55: ...isplay Memory the Vertical Horizontal and Attribute RAMs on diagram 16 via the Display Control Register diagram 17 The Waveform ixP then clocks the data out of its memory into the appropri ate Display RAM Data Transfer to Display DACs When the System nP initiates the display of the data stored in Display Memory it writes via its data bus the starting address of that data to the Display Counter dia...

Page 56: ... With Envelope mode selected the signal is passed through an rc integrator that produces vectors between the min max data points of the Envelope Mode display The System nP based on Front Panel settings selects the display mode for the Vertical and Horizontal Vector Generators The selected input either Vector Dot Envelope or Readout inputs from each Vector Generator is coupled through to its corres...

Page 57: ...e RD signal is derived from U844A which NANDs the HVMA signal with the nP R W signal Inverting buffer U572C provides added driving power to the R W signal and inverting buffer U884B reinverts it back to its original polarity before it is applied to NAND gate U844A The out put of U844A is the RD signal whose falling edge indi cates the start of a read cycle The rising edge of RD is coincident with ...

Page 58: ... instrument power supplies are operating properly This delay ensures that the System P begins the operat ing program with all electrical components in valid defined states after the instrument is powered on The Power Up Reset circuit consists of a Texas Instru ments TL7705 Reset Controller U942 and some RC timing components When the instrument is first powered up the Reset Controller s RESET outpu...

Page 59: ...to be restarted When an IRQ interrupt is detected the mP executes a read of location 601 Oh which is the address of Interrupt Register U654 an octal buffer That address is decoded by 1 of 8 Decoder U884 to set INTREG LO and enable U654 The enabled buffer passes the status of the various interrupt lines at its inputs to the data bus for the P to read From the status bits read the nP determines whic...

Page 60: ...K BANK SWITCHED PAGES DISPLAY MEMORY U431 U440 _____ 3 K _____ READOUT BUFFERS U140 U240 I K DATA ATTRIBUTE RAM U430 4K X 1 ACQUISITION RAM U440 4 K COMMAND TEMP U440 2 K COEFFICIENT RAM U440 2 K MEMORY MAPPED I O INTERPOLATION RAM U440 4 K NOT USED 6000 t 6010 60IF 6020 602F 6040 604F 6080 608F 6100 610F 6200 620F 6400 640F 6800 6807 680F 7000 EXPANDED SECTION UNUSED PROCESSOR I O UNUSED TIMEBASE...

Page 61: ... are LO the 1 of 8 decoder U668 has decoded address lines AC AD and AE to determine that the addresses range from 4000h 4FFFh or from 7000h 7FFFh In these address ranges the LO host RAM enable holds off the BUS GRANT forced HI at the output of U250D from driving the output of AND gate U862B HI If the System Processor is accessing these locations in Waveform Processor RAM it asserts WFRAM HI Wavefo...

Page 62: ...y mapped I O blocks consists of 16 consecutive addresses from 6000h to 7000h with various functions assigned to specific addresses These functions include clocks chip enables and circuit enables Each is explained in the descriptions of the circuits they affect System RAM The System RAM provides temporary storage of data used in execution of the various control functions of the System p R In additi...

Page 63: ...utputs start in known states To load U860 the System pP writes data to location 6014h generating an address decoded PCREG clock This rising edge of the PCRES clock when the clock returns HI causes the data on the data bus to be written into the register Table 3 2 illustrates the select functions of the PC Register output bits Operation of U760 the Processor Miscellaneous Register PMREG is similar ...

Page 64: ...ally with power on WPRESET Waveform pP reset from Processor Controlled Register U860 diagram 1 will be LO holding the processor reset via U270C This reset remains in effect until the System pP writes a HI bit to the WPRESET output of U860 to remove the reset and enable the Waveform pR The System pP also holds the Waveform pP reset while it is updating the command list in RAM of the next task that ...

Page 65: ... ORed signal is such that the output of U264B goes HI when the address on the input pins of Waveform Address Registers U562 and U364 is guaranteed to be valid Inverter U270B inverts the output from the OR gate WVMA waveform valid memory address and when that output again goes LO the rising edge of the inverted WVMA signal on the clock input of the Waveform Address Registers latches the 16 bit addr...

Page 66: ...o do an access in the Waveform pP address space it checks its software copy of PCREG to see if the Waveform pP is reset If it is not reset the System pP asserts BUSREQ bus request to the Waveform pP and waits until the Waveform pP outputs a BUSACK bus acknowledge to OR gate U332D The output of U332D is the BUSGRANT signal that when HI disables the Waveform pP data buffers address registers and mem...

Page 67: ...NAND gate U874D s output goes LO This LO drives the output of NAND gate U874B HI and the output of U874A LO With the other inputs to U850A LO its output goes HI and enables the Bus Connect Buffer via U254D To summarize the conditions that must be present for the decoding circuitry to produce an enable to the Bus Connect Data Buffer are 1 BUSGRANT LO Waveform jaP has relinquished the busses 2 MAIN ...

Page 68: ... when other address blocks are decoded by U570 in the descriptions to follow Y0 and Y1 are HI and U350 disabled via Q244 and Q332 NOTE The chip select circuit between the SAVE output of U580C and RAM U350 is identical to thatfor the System pP RAM U664 diagram 1 The circuit determines chip selection during normal operation and isolates the Save RAM chip select input when power is off Table 3 4 Wave...

Page 69: ...rces the output of U432A LO and enables U440 RAM The same LO also enables the Waveform Data Buffer via U580D to con nect the Waveform Data Bus to the Waveform Processor RAM The System Processor can also access this address bus by asserting BUSGRANT and WPRAM HI The two HI inputs to XOR gate U130A produce a LO at its output The Waveform Data Buffer is enabled and the Waveform Data Buffer are enable...

Page 70: ...d in its internal RAM When a change is detected the Front Panel pP issues an interrupt to the System pP The System pP then handles the interrupt and reads the changed data from the Front Panel pP to update its con trol setting values The Front Panel pP also updates the current value list stored in its RAM for further use Front Panel j u l P U700 is externally clocked by the 4 MHz system clock appl...

Page 71: ...lity of U700 The test routines may also be used to troubleshoot the Front Panel Processor system These tests are explained in the Diagnostics portion of the Maintenance section of this manual Handshake Logic The Handshake Logic circuit formed by NOR gates U862A B C and D and flip flops U861A and B controls and synchronizes data transfers between the System pP and the Front Panel pR Data transfers ...

Page 72: ...t was present when the scope was turned off Front Panel Switch Scanner The Front Panel switches are arranged in an electrical array of eight rows and six columns Switches are placed at row column intersections and when a switch is closed one of the row lines is connected to one of the column lines through an isolation diode Checking for switch conditions open or closed is done by setting a single ...

Page 73: ...cal position and centering trigger levels holdoff time common mode rejection grati cule illumination and CCD offsets The System DAC portion of the circuitry consists of a data latch that stores the digital value to be converted a D A converter that does the actual conversion a multi plexer system to route the resulting analog voltage to the proper control circuit and a sample and hold system that ...

Page 74: ...a gain correction voltage applied to the DAC via R760 Capacitor C662 maintains the correction voltage between DAC update cycles Multiplexer Select The Multiplexer Select circuit composed of addressable latch U272 and the associated decoding gates provides the enabling signal that selects one of the four 1 of 8 mul tiplexers to route the DAC output voltage to the Sample and Hold circuits Data appli...

Page 75: ...ultiplexers shown in diagram 6 to several types of hold circuits DAC M ultiplexers DAC Multiplexers U821 U830 and U831 route the analog output voltage from DAC l to E Converter U661C diagram 5 to the various Sample and Hold circuits Operation of each multiplexer is identical to that of Multi plexer U651 previously described in the System DAC cir cuit discussion Each multiplexer is individually ena...

Page 76: ...fier is an indication of the gain of that device Changes in that value that occur between different Z Axis Amplifiers shift the biasing level of U812E to either increase or decrease the share of the total current through that transistor by a small amount The change in current is in the appropriate direction to make the display intensity of different instruments comparable with exactly the same Int...

Page 77: ...J132 allows an external clock signal to be sub stituted for the 40 MHz clock signal to aid in testing and troubleshooting S econdary C locks The Secondary Clocks circuit further divides the 20 MHz clock to produce other system clock rates The flip flops within U710 along with logic gates U711A U711B U711C and U712B produce 10 MHz 5 MHz and 2 5 MHz clocks Flip flop U710D and exclusive OR gate U711C...

Page 78: ...tes the timing of these clocks and other clocks in the System Clock Generator it may be of use in following the discussion of circuit operation When acquired samples are to be shifted out of the CHI and CH2 CCD array the TTL version of the Phase Clock 02 output TTL2C from Phase Clock Array U470 will be toggling at 500 kHz Transitions of the TTL2C clock are resynchronized to the 20 MHz clock C20M2 ...

Page 79: ...________ MS14 _______________________________ 1 1 ______________________________ MS24 _______________________________________ 1 1 ______________________ MS11 1 1 MS21 1_____________________________________________________ 1 1 _______ CLKLATCH LJ U LJ U LJ LJ LJ LJ LJ MS12 MS14 J 1 _______________________1 1 _______________________1 MS22 MS24 ________ 1 1 _______________________1 1 ________________...

Page 80: ...am 15 That same 20 M Hz clock loads counter U721 with 1100 binary and clocks SYNC from pin 15 of U830 HI With SYNC HI shift register U831 is in hold mode and counter U721 is enabled to count via AND gate U623A Counter U721 increments from the beginning count of 1100 to 0000 four 20 MHz clocks 200 ns at which time the SHIFT output from OR gate U522A goes LO This sets up shift registers U831 and U83...

Page 81: ...ccess the data as it is needed to update the display Tim e B ase C ontroller Time Base Controller U670 monitors and controls the various acquisition functions Two different operating modes of the CCD charge coupled devices arrays must be controlled by U670 these are the FISO mode fast in slow out and the Short Pipe mode FISO mode is used at sweep speeds faster than 100 ns div when the analog sampl...

Page 82: ...er and post trigger samples in terms of these 34 sample records there are usually some samples at the beginning of those in the CCD array B register that are extra When the analog samples are serially moved out of the CCD array for digitization these extra samples must be ignored in order to maintain proper trigger location within the complete record The CCD Phase Clock Array U470 knows where the ...

Page 83: ...s four points in ENVELOPE acquisition mode one for CH 1 and one for CH 2 at the synthesized rate When the trigger event occurs U670 counts the proper number of post trigger samples When the post trigger count is complete since A D converted data already is stored in Acquisition Memory ACQDN is set Waveform data bytes are moved to the Save Memory by the Waveform P and control is given back to the S...

Page 84: ...nters U300 U400 and U401 When the TB2MEM signal goes LO the counters become transparent This connects the Waveform y P address bus to the address inputs of the Acquisition Memory so that the Address Counter output follows the WAO WAA Waveform y P address bits 0 A lines When the TB2MEM signal is HI the Time Base Controller is in control of the Acquisition Memory and counter will be in its count mod...

Page 85: ...VERLOAD is displayed on the CRT At power off the input coupling is automatically switched to the 1 position to prevent an unmonitored overload condition from accidently occurring Compensating capacitor C414 is manually adjusted at the time of calibration to normalize input capacitance of the preamplifier to the attenuator A probe coding ring around the BNC input connector passes probe coding infor...

Page 86: ...as a calibration constant in nonvolatile memory and like the other DAC System outputs is updated approximately every 64 ms holding the Preamplifier in a dc balanced condition The voltage level of the CH1 PA POS Channel 1 Preamplifier Position signal from the circuit which includes U630A and U630B diagram 6 vertically posi tions the channel 1 trace When the CHI VERT POS con trol on the Front Panel ...

Page 87: ...r 1 or 4 5 volts EXT 5 Larger applied voltages on the external trigger inputs will exceed the control ranges of the Trigger System The logic levels of control bits applied to U100 pin 30 GA3 and pin 31 GA4 from Source Select Control Register U140 diagram 5 set the gain of the EXT 1 and EXT 2 Preamplifiers respectively Dc offsets in the output signal due to any tracking differences between the 5 V ...

Page 88: ...tecting a negative peak the PDB peak detector is holding the last peak or resetting and vice versa see table in Figure 3 4 Each of fast peak detectors is followed by a slow peak detector to increase the peak hold time to the CCD input register The outputs of the positive peak detectors are multiplexed to the differential OUTEVEN pins pins 33 and 35 while the outputs of the negative peak detectors ...

Page 89: ...HOLD TRACK PD PO HOLD TRACK DISPLAY DISPLAY DISPLAY DISPLAY B TRACK PD PD HOLD TRACK PD PD DISPLAY DISPLAY DISPLAY M I N C PD PD HOLD TRACK PD PD HOLD DISPLAY DISPLAY DISPLAY DISPLAY HOLD TRACK PD PD HOLD t r a c k PD DISPLAY DISPLAY OISPLAY 6603 38 3 47 Figure 3 4 Simplified Peak Detector block diagram ...

Page 90: ...ifted out of the CCD at a much slower rate than the sampling rate An inexpensive A D Converter can be used to digitize the signal and slower memory circuits used to store the digitized samples This type of operation is called Fast ln Slow Out FISO and is used at SEC DIV settings of 50 ns and faster At SEC DIV settings of 100 ns and slower the CCD runs with a constant clock rate of 500 kHz in a mod...

Page 91: ...Theory of Operation 2440 Service 3 49 Figure 3 5 Simplified CCD architecture ...

Page 92: ...s into 50 Q to view them Using the standard 10 MO probe will cause the signals to have a displayed rise time of about 30 ns the actual rise time internally is less than 2 ns Bias current for the Channel 1 high speed drivers is set by the feedback circuit of U360B and Q375 The drivers are biased by injecting current into the IS input pin 37 Increasing the current makes the LO level of the high spee...

Page 93: ...ck to generate other CCD clocks in accor dance with mode data written to it from the System nP A B Trigger G enerator The A B Trigger Generator circuit composed of U150 and associated components provides for selection and analog type trigger detection from five input signals for each of the A and B triggers These are the CH 1 and CH 2 vertical inputs the EXT 1 and EXT 2 trigger inputs and the line...

Page 94: ...Operation of the Trigger Logic Array is very sequential in the way it functions in the various trigger modes An example is illustrated in the sequence of events for B RUNS AFTER trigger mode 1 The System yP loads the delay count and control mode registers then starts the acquisition indicated by setting RSTACQ HI at TP370 2 The Trigger Logic Array watches for EPTHO at pin 28 to go HI signaling tha...

Page 95: ...NE EVENT BIT ONEVNT EVENTS 1 0 NO 1 YES A TRIGGER BITS ATI ATO SOURCE 0 0 MAIN INST TRIGGER 0 1 VIDEO TRIGGER OPTION 1 0 WORD TRIGGER OPTION 1 1 A B TRIGGER B TRIGGER BIT BTO SOURCE 0 DELAYED INST TRIGGER 1 WORD TRIGGER OPTION DELAY BY EVENTS S TIME BIT EVOEL MODE 0 NOT DELAY BY EVENTS AND TIME 1 DELAY BY EVENTS AND DELAY BY TIME SELECT EVENTS BIT AB COMBINATIONAL TRIGGER SELEVENTS MODE ABTRIG SOU...

Page 96: ...ISO MODE As explained in the CCD description each CCD is made up of two identical differential channels using a serial parallel serial SPS structure Samples are moved into and shifted within the CCD arrays using properly phased overlapping clocks Figure 3 5 shows a basic CCD structure see CCD description diagram 10 Depending on which of the four sides of the CCD is being acquired the corresponding...

Page 97: ...at SEC DIV settings 100 MS div and slower In Short Pipe mode the j A2 clock that transfers samples down the input A register is disabled and instead the Tl transfer into B array clock shifts sam ples straight down the first register of the B array to the output well Sampling occurs at 2 MHz in Short Pipe mode 500 kHz each side of the CCD array as the various phase clocks are derived from the 2XPC ...

Page 98: ...e the circuit is waiting for a trigger to occur sig naled when RAMP and RAMP go to their true states The summing node voltage is applied to U590B on pin 6 where it is compared to the zero volt clamp level ground on pin 5 When the summing node attempts to go below ground while Q490 is on U590B will conduct more to maintain the balance at the input pins thereby clamping the summing node at zero volt...

Page 99: ...Theory of Operation 2440 Service RAMP JTRIG SLRMP1 SLRMP2 JIT COR RAMP 1 JIT COR RAMP 2 START1 START2 ST0P1 ST0P2 Figure 3 7 Jitter Correction waveforms 3 57 ...

Page 100: ...two selectable cap values The resulting integrator output is a linear ramp whose slope depends on the current source and integration capacitor selection The ramp is applied to the Holdoff Comparator where it is compared to the user definable front panel pot holdoff reference level When the charging ramp crosses that level the ramp rapidly discharges resets and ends the holdoff condition Holdoff Se...

Page 101: ...he selected integrating capacitors to charge When the charging ramp reaches the user defined HOREF holdoff reference level the output of ramp com parator U871 will go LO This resets flip flop U872A of the Holdoff Logic which in turn turns Q781 back on The low impedance path through Q781 discharges the integration capacitor very rapidly When this discharging ramp crosses the 4 6 volt level defined ...

Page 102: ...thus converting the peak value of the ramp to a binary number Since that value is directly pro portional to the time difference between a trigger event and the next sample clock edge the number derived by the counter gives a precise time measurement of where the trigger occurred with respect to the sampled data That information is used by the System tiP to correctly place the random sampled data p...

Page 103: ...iagram 14A where they are applied to the bases of U111A U111B U111C and U111D via R113 and R114 Transistors U111A U111D along with current source transistors Q111 and Q112 form a variable gain differential current amplifier The differential current at the collectors of U111B and U111C is equal to the differential current through U111A and U111D multiplied by the ratio of the dc current for the Q11...

Page 104: ...are filtered from the amplified reference voltage by L770 C570 and C776 The negative side of the reference is tied to ground therefore input voltage for conversion may range from 0 V to 1 5 V The time multiplexed CCD Data signal current develops a voltage across R880 that is offset by the A2D REF voltage It is then amplified and inverted by U780 to produce an input signal to the A D Converter with...

Page 105: ...er enabling and clocking to direct a new maximum or minimum data bytes into the correct Acquisi tion Latch As in NORMAL Mode acquisitions output enabling of the four latches is controlled by the M SI 3 MS11 M SI 2 M S I4 MS23 MS21 and MS22 MS24 select lines The Q outputs of the flip flops control output ena bling of the four latches causing the Acquisition Latch corresponding with the selected CCD...

Page 106: ...eration of Horizontal Display RAM U440 is identical to that of the Vertical Display RAM just described The Horizontal RAM chip select CSX is gated through U323D for addresses between 10K and 12K when DISP is LO Data that may be stored in the Horizontal Display RAM includes two 512 point waveforms and IK x 8 of readout information During a waveform display the data output from the Horizontal RAM ma...

Page 107: ...ter Volts Cursor Register U241 is an address decoded memory location where the System P writes the eight MSBs of the vertical position data for volts cursor displays Data written into this register along with two bits written into the Misc Register U540 define the vertical position of the Volts cursor Since volts cursor displays have two cursors the microprocessor alternately writes the position d...

Page 108: ...the line Each of these character positions corresponds to a specific location in the readout memory space stored in the Horizontal RAM To display the readout the Readout State Machine sequentially reads through the readout memory and displays the required character at the corresponding memory mapped location on the crt screen Each displayed character con sists of a sequence of individual dots prod...

Page 109: ...Hz clock signal from the Time Base Controller circuit is buffered and inverted by U413C and is used to drive the Readout State Machine The 5 MHz clock is also applied to the counter made up of decade counters U410A and U410B producing several intermediate clocks at their outputs The 1 MHz 2QC clock the 500 kHz 2QA clock and the 250 kHz clock from U410B are gated together by U411A and produce the S...

Page 110: ...revious display cycle finished as it is for this discus sion the DISDN display done bit applied to pin 10 of U313 is also HI The 250 kHz clock applied to this enabled AND gate causes the output of U313 to go HI on the fal ling edge to clock the HI STARTDIS bit to the Q output of U414A This latched signal is the DISPLAY bit that enables the Display Counter clocks via U411C The DISPLAY bit is delaye...

Page 111: ... U414B and the 250 kHz clock begins clocking the data from the output of U312B to the Q output of U414B Since a cursor display is neither a waveform nor a readout display the DOTS signal applied to inverter U413D is LO while the RO signal applied to NAND gate U312B is HI This enables U312B and the output of U412A then con trols the D input signal to flip flop U414B That signal is clocked to the Q ...

Page 112: ...state machine is at a decision point as to whether counter U231 should count or load instead of just automatically loading the next state The condition tested to make this decision is selected by the select inputs to U230 and are as follows DO R O readout goes HI when a readout display should start D2 AND gate U233A watches for the 12th character address 11 D3 EOCH end of character goes LO on the ...

Page 113: ... start X IPOWER UP U231 HELD RESET DISPLAY GOES HI NOTE TIME BETWEEN STATES WHETHER CLOCKED OR LOADED IS 200ns 1 CLOCK CYCLE NOTE LOAD ENABLE U231 RESET REMOVED STATE 0 L STATE 1 SELECT D0 OF U230 STATE 2 L STATE SELECT D2 OF U230 STATE 4 L STATE 5 L STATE 6 C NO STATE L STATE 8 1 L STATE 9 L STATE L STATE L STATE L STATE F NO 64TH YES CHAR1 Q CLOCK CLOCK DISPLAY COUNTER CLKRAM WATCH FOR EOL END O...

Page 114: ...ill only be LO for the last dot of any given character As long as EOCH is HI not the last dot U231 will increment to state 7 on the next clock State 7 disables U230 terminating the test condition State 8 is loaded from state 7 and turns on the Z Axis via RZON readout Z Axis on from U330 States 9 and A hex are sequentially loaded from the previous state and also have RZON asserted These three cycle...

Page 115: ...decreases by the same amount Current from the Vertical DAC output connected to pin 3 of U170 develops a voltage across R163 This volt age causes the output of U170 to move in the same direc tion until the feedback current through R164 applies an equal voltage to pin 2 of U170 The output voltage of the Input Buffer at pin 6 is the signed sum of voltages across R163 and R164 The gain of the stage is...

Page 116: ...voltage from Input Buffer U170 is applied to the input pin 2 of U281 of the Difference Amplifier which now amplifies the difference between the present point position on screen represented by the voltage at pin 3 of U281A and the new position applied to pin 2 of U281A This difference voltage is sam pled and stored on Hold Capacitor C260 where it sets a new current level through R162 and R620 from ...

Page 117: ...ntal deflection plate H Spot W obble Correction The Spot Wobble Correction circuit provides a dynamic correction of spot shift on the CRT caused by signal intensity changes CRT electron beam current changes Correction is accomplished by injecting offsetting currents that vary linearly with beam current changes into the Vertical and Horizontal Output The beam current control voltage is inverted by ...

Page 118: ...ng The added negative bias causes Q628 to turn on earlier in the oscillation cycle delivering more energy per cycle to the resonant transform er The increased energy in the resonant circuit increases the secondary voltages until the Cathode Supply voltage returns to the balanced condition 0 V across C260 Opposite action occurs should the Cathode Supply voltage tend too negative 6 0 Volt Supply 61 ...

Page 119: ...he base node of Q145 from the FOCUS pot through R262 This additional current varies the base drive current to Q145 and provides tracking between the two lenses as the FOCUS control is adjusted during use of the instrument A u to FOCUS The convergence strengths of the quadrapole lenses also dynamically track changes in the display intensity The VQ signal applied to the CRT at pins 5 and 6 is linear...

Page 120: ...Theory of Operation 2440 Service Figure 3 10 DC Restorer 3 78 ...

Page 121: ...erence between the Z Axis signal level and the CRT cathode potential The Z Axis signal sets the level on the positive plate of capacitor C through R443 CR442 and R546 the level on the negative plate is set by the CRT cathode voltage through resistor E and diode A Capacitor D is charged to a similar DC level through resistor F and R442 When the AC waveform applied to pin 15 begins its transition fr...

Page 122: ...d out of the scope These include a GPIB interface an interface to the AutoStep Sequencer Word Trigger interface an audio bell and the probe power connectors used to supply power to active probes GPIB The GPIB interface provides an electrical interface adherent to the IEEE 488 1980 Standard using protocols defined in the Tektronix GPIB Codes and Formats Standard GPIB data transfers are done under c...

Page 123: ...Theory of Operation 2440 Service SOURCE ACCEPTOR 4 9 1 7 1 2 3 81 Figure 3 11 GPIB data flow diagram ...

Page 124: ...age level dropped across the R330 and the base emitter of Q104 is great enough to saturate Q104 and provides a LO SEQUENCE OUT at J1903 When SEQOUT is LO Q104 is off SEQUENCE OUT at J1903 is pulled up to about 3 V via R108 The 5 Volt supply is zener regulated by R105 and VR 105 to provide the 3 Volt collector supplies for Q104 and Q107 The circuit action of Q107 and its surrounding circuitry is id...

Page 125: ...wing in R274 and R276 charges C372 up until it crosses the trigger level at pin 2 of U274 This sets the output applied to the base of Q594 LO turning the transistor off and sets the discharge output at pin 7 to ground potential Capacitor C372 now discharges through R276 until the threshold level at pin 6 is reached at which time the out put at pin 3 goes HI and the discharge pin goes to a high imp...

Page 126: ...pulses lines until the line number for the selected trigger point is reached At that point if the main trigger circuit is finished with holdoff the TV Trigger Gen erator circuit produces a TV Trigger to the A B Trigger Generator to trigger the next storage acquisition An additional display function added to Channel 2 is the TV CLAMP feature When enabled the circuitry holds the back porch level of ...

Page 127: ...lector voltage of U610B returns positive until the above zero volt output level is restored and CR612 becomes biased off SYNC PICKOFF COMPARATOR The Sync Pickoff Comparator composed of Q504 and Q510 switches when the amplitude of a sync pulse crosses the comparator threshold level The switching threshold is set by the bias ing resistors of Q510 R408 and R409 to about 50 of the sync level to elimin...

Page 128: ...s action effectively removes the unwanted pulses from the HORIZCLK output by preventing them from triggering the multivibrator circuit CLOCK FREE RUN If non NTSC standard television signals are being used the vertical sync block may not be serrated To maintain the proper horizontal sync rate dur ing the absence of signal supplied horizontal pulses the Clock Free Run circuit produces artificial clo...

Page 129: ...H HCLK H0R1ZCLK DLY D HCLK compsync n n n VERTSYNC HORIZONTAL SYNC EQUALIZATION VERT SYNC AND SERRATIONS EQUALIZATION U308 6 JLJLJL J l U308 JT_JT_JT_JT_JT_J LJT n j U L PLL ERROR HORIZCLK 4 9 1 7 1 8 Figure 3 13 Video Option waveforms 3 87 ...

Page 130: ...Theory of Operation 2440 Service 3 88 ...

Page 131: ...s the VCO to that output frequency throughout the vertical sync period when all serration pulses are disabled from the Phase Comparator input and no comparisons are being made DELAYED HORIZONTAL CLOCK The Delayed Hor izontal Clock DLY D HCLK is used to remove alternate equalizing pulses and serration pulses from the composite sync waveform in order to maintain precise sync for horizontal line coun...

Page 132: ... 680Fh that are set by the System Processor to determine when the chosen line number in the field selected for triggering is reached The various control registers of the counter are set up to count horizontal clock pulses lines to determine line location in the field The Line Counter is enabled whenever its address block is decoded by the system Address Decode circuitry To differentiate it from th...

Page 133: ... to pin 4 of that flip flop through NAND gate U541B In this mode a trigger will occur on the first line sync following the end of each holdoff interval The resulting display will be stable with respect to horizontal sync pulses but will not be stable with respect to the vertical sync pulses CH2 VERTICAL DISPLAY CLAMP The Channel 2 Display Clamp circuit clamps the back porch level of the triggered ...

Page 134: ... offset gain Transistor Q419 will be turned on for those settings placing C520 in parallel with C522 to slow down the loop response This prevents oscillation in the Channel 2 Preamplifier at the more sensitive gain settings Offset Buffer Amplifier U710D applies this stored offset level to the Channel 2 Preamplifier via Q710 shift ing the back porch of the displayed signal to near the on screen gro...

Page 135: ...shes the positive volt age supply for the 1 2 V regulator stage formed by Q836 VR929 R240 and R640 With Q240 on R244 is placed in parallel with R436 and both Q148 and Q240 remain saturated The 2 7 V level begins to drain down as the 1 2 V Regulator draws charge from C244 If the main power supply doesn t start and thus recharge C244 via T335 and CR245 by the time the voltage across C244 reaches abo...

Page 136: ...Theory of Operation 2440 Service Figure 3 15 PWM Regulator and Inverter 3 94 ...

Page 137: ...etwork that allows a voltage sensed at the FEEDBACK input to slightly alter the voltage sense reference applied to pin 1 of U233 The FEEDBACK signal is generated by the 5 V Inverter Feedback amplifier U189 diagram 23 and is directly related to the level of the 5 VD supply line If the FEEDBACK signal goes above its nominal level 5 VD is too low base drive to the shunt transistor in optoisolator U15...

Page 138: ...Theory of Operation 2440 Service Figure 3 16 PWM switching waveforms 3 96 ...

Page 139: ...t sense circuits the Q output goes high and C829 begins to discharge With Q high CR824 becomes reverse biased so that discharge of C829 is through R932 providing a relatively slow discharge compared to the charging time This ensures that the Q output of U829A is held high long enough for soft start capacitor Cl 28 and Control Power Supply capacitor C244 to fully discharge The high Q output of U829...

Page 140: ...paring the output voltage to a known reference level In order to maintain a stable supply volt age the reference voltage must itself be highly stable The circuit composed of U180 U170B U900 and associated components produces the two reference levels used by the regulator circuits Resistor R556 and capacitor C664 form an RC filter network that smooths the unregulated 1 5 VA supply before it is appl...

Page 141: ...his initial HI holds CR465 biased off thereby preventing a false overcurrent sense and subsequent latchup at start up as the 8 V regulated output seen on pin 3 of U470A rises from zero volts to its normal operating level 5 V Regulator Regulation of the 5 V supply is provided by a circuit similar to that of the 8 V Regulator As long as the rela tive polarity between the 8 V supply and the 5 V sup p...

Page 142: ...is configured as a com parator referenced to 1 0 VREF When adequate power line input voltage is available the LINE UP signal will be HI The output of the comparator will be LO turning off transistor Q295 This results in a HI PWRUP signal to the System nP indicating that the power supplies are stable When adequate power line voltage is not available the LINE UP signal from the Preregulator circuit ...

Page 143: ...ization procedures are found in Sections 1 and 2 of the operators manual included with this instrument Section 5 of that manual is a reference for operation of all front and rear panel controls and connectors Refer to those sections of the Operators manual if instructions for obtaining the various operation modes of this instrument are needed Test equipment items 1 through 28 listed in Table 4 1 a...

Page 144: ...gnal level 100 mV to 1 V Repetition rate 100 Hz to 100 kHz Rise time 1 ns or less Flatness 0 5 Signal source for gain TEKTRONIX PG 506 Calibration Generator 4 Time Mark generator Marker outputs 10 ns to 0 5 s Marker accuracy 0 0002 Trigger output 1 ms to 0 1 p s time coincident with markers Horizontal checks TEKTRONIX TG 501 Time Mark Generator 5 Function Generator Range less than 1 Hz to 80 kHz s...

Page 145: ...l banana male Signal interconnection Tektronix Part Number 103 0090 00 20 Sine Wave Oscillator Frequency adjustable to 60 Hz Amplitude adjustable to 3 V p p into 75 f l Check TV triggers for back porch clamp operation TEKTRONIX SG 502 Oscillator 21 Pulse Generator Period Range 1 ms to 2 jxs Pulse Range 0 5 ms to 1 ps Amplitude variable from 5 to 5 V independent pulse top and pulse bottom Check Aut...

Page 146: ...he SAVE Sequence menu f Use the arrows under ROLL CHARS to create a label use FPNL for the front panel setup outlined here in steps 1 3 1 Select the first character for the label Use the arrow labeled buttons to select the first letter forthe sequence label Press the or f button to step through the alphabet and digits 0 9 Holding down the buttons moves through the characters continuously a single ...

Page 147: ... settings that were stored for FPN L NOTE Remember this four step procedure for recall ing FPNL NOTE The following steps turn the Trigger Point Indicator a small T displayed on waveforms and the BELL on for use in this procedure These functions cannot be stored in the front panel setup but remain in effect until changed by the operator Leave these functions turned on for the remainder of this proc...

Page 148: ...CH 2 VOLTS DIV 1 V Select VERTICAL MODE Set C H 2 Off Select CH 1 COUPLING INVERT Set 50 Cl ON OFF OFF Select CH 2 COUPLING INVERT Set 50 f t ON OFF OFF b Connect the Power Supply Power Supply should be turned off to the CH 1 OR X input connector via a BNC Female to Dual Banana adapter and a 50 Cl Coaxial Cable c Using the CH 1 VERTICAL POSITION control align the trace to the bottom graticule line...

Page 149: ...put signal to the CH 1 OR X input connector using a IX probe c Set the CH 1 COUPLING INVERT menu to DC on A GND symbol disappears next to the CH 1 scale factor readout d C HE C K D isplay for a square wave which steps positive upwards approximately 2 divisions from the center horizontal graticule line e Set CH 1 COUPLING to AC a sine wave symbol appears next to the CH 1 scale factor readout in upp...

Page 150: ...ect the other cursor it will change from solid to seg mented 8 Use the CURSOR DELAY control to align this cursor to the top of the waveform Take care to use the same reference points top edge bottom edge or center of the waveform and cursor as in subpart 6 NOTE For VOLTS DIV Control Settings of 2 mV 5 mV and 10 mV select TRIGGER CPLG and set NOISE REJ on In addition connect the Calibra tion Genera...

Page 151: ... output level to the corresponding Standard Ampli tude Out level in Table 4 2 Performance Check and Functional Verification Procedure 2440 Service 29 Use the VERTICAL POSITION control to set the bottom of the signal 3 divisions below grati cule center 30 Repeat subparts 6 through 29 for each VOLTS DIV Control setting listed in Table 4 2 Skip subparts 26 through 29 when checking the last VOLTS DIV ...

Page 152: ... 5 V 20 V 19 40 V to 20 60 V 19 20 V to 20 80 V 17 8 V to 22 2 V 1 6 V install a X I0 attenuator between the 50 f l Coaxial Cable and the input channel BNC for this check only 39 Set the CH 1 VOLTS DIV control to 1 V and the Calibration Generator s output level to 5 V 40 Select CH 1 VARIABLE and press and hold down the menu button labeled J until the displayed waveform no longer decreases in ampli...

Page 153: ...ocedure Make the following changes to the front pa nel setup Select VERTICAL MODE Set CH 2 Off Select CH 1 COUPLING INVERT Set 50 f i ON OFF OFF Select CH 2 COUPLING INVERT Set 5 0 0 ON OFF OFF b Connect the Calibration Generator s STD AMPLITUDE output to the CH 1 OR X input connector via a 50 f l Coaxial Cable Do not use a Termination c Set the Calibration Generator s STD AMPLITUDE out put level ...

Page 154: ...p labeled FPNL see step i in INITIAL SETUP at the start of this procedure Make the following changes to the front panel setup CH 1 VOLTS DIV 2 mV CH 2 VOLTS DIV 2 mV A SEC DIV 100 ns VERTICAL MODE CH 2 Off b Connect the output of the Secondary Leveled Sine Wave Generator to the CH 1 OR X input connector via a 50 O Precision Coaxial Cable a 10X Attenuator and a 2X Attenuator c Set the Leveled Sine ...

Page 155: ... of this CMRR check to avoid exceeding the dynamic range of the CH 1 and or CH 2 Vertical systems If the controls are accidently adjusted go back to part a and repeat this check b Connect a 50 kHz reference frequency signal from the Leveled Sine Wave Generator to the CH 1 OR X and CH 2 OR Y input connectors via a 50 O Coaxial Cable and a Dual Input Coupler c Set the Leveled Sine Wave Generator out...

Page 156: ...erator for 5 divisions in CH 2 Return the CH 2 VOLTS DIV control to 50 mV l Perform parts e h checking the CH 1 channel isolation instead of CH 2 m Set both VOLTS DIV controls to 100 mV the SEC DIV control to 2 ns Select TRIGGER SOURCE and set CHAN 1 2 to 1 n Connect the Secondary Leveled Sine Wave Generator to the CH 1 OR X input connector via a 50 f t Coaxial Cable o Set the Secondary Leveled Si...

Page 157: ...enter graticule line aa Disconnect the test setup Performance Check and Functional Verification Procedure 2440 Service 10 Check Display Versus Graticule Centering and Dot Versus Vector Display Offset Check VECTOR Response for NORMAL and ENVELOPE Acquisition modes a Recall the Initial Front Panel Setup labeled FPNL see step i in INITIAL SETUP at the start of this procedure Make the following change...

Page 158: ...CH 1 VERTICAL POSITION control to move the displayed trace up 3 divisions and down 3 divisions to create a 6 division filled envelope on screen s Press the SELECT button next to the INTENSITY control t C H E C K F o r no more than a 0 06 division change in amplitude between the filled envelope and the non filled envelope as VECTORS ON OFF is switched between the ON and OFF settings for the dis pla...

Page 159: ...e checked in the DC trigger coupling setting to verify their signal paths However if a source s trigger sensitivity is very near the limits speci fied in Table 4 3 this procedure will specify additional checks for the other trigger coupling settings a Recall the Initial Front Panel Setup labeled FPNL see step i in INITIAL SETUP at the start of this procedure Make the following changes to the front...

Page 160: ...UPLING setting specifying the foot note Not Triggered at specified amplitude i Change the generator output amplitude as necessary and repeat parts g through h for any Trigger Coupling setting specifying a different Minimum Display Level for triggering other than the initial setting for that row For example NOISE HF and LF settings usually but not always require different amplitudes than the ini ti...

Page 161: ... INVERT Set 5 0 flO N O F F OFF Select TRIGGER MODE Set AUTO On b Connect the sine wave output of the appropriate generator through a 50 O Coaxial Cable a 5X Attenua tor a 50 n Termination install 50 f l Termination be tween the 5X Attenuator and the Dual Input Coupler and a Dual Input Coupler to the C H 1 OR X and the EXT TRIG 1 input connectors Use the Function Generator for Test Frequencies bel...

Page 162: ... HF REJ LF REJ A 60 Hz 5 mV 10 ms 17 5 17 5 a a 17 5 b B 60 Hz 5 mV 10 ms 35 0 35 0 a a 35 0 b A 30 kHz 5 mV 20 p s 17 5 17 5 a 25 a B 30 kHz 5 mV 20 ps 35 0 35 0 a 50 a A 80 kHz 10 mV 10 p s 17 5 17 5 a a 25 B 80 kHz 10 mV 10 A S 35 0 35 0 a a 50 A 50 kHz 10 mV 20 ns 17 5 17 5 60 60 b 25 B 50 MHz 10 mV 20 ns 35 0 35 0 120 120 b 50 A 300 MHz 50 mv 2 ns 50 0 50 0 150 150 b 50 B 300 MHz 50 mV 2 ns 1...

Page 163: ...o the s p e c ifie d S E C D IV setting an d re d u c e the tim e n ecessary to co m p lete the B REPET acq uisitio n s e q u e n c e S et the H O R I ZO NTAL M O D E b a c k to B y Disconnect the test setup 3 C h eck A B Trigger S ou rce a Recall the Initial Front Panel Setup labeled FPNL see step i in INITIAL SETUP at the start of this procedure Make the following changes to the front panel setu...

Page 164: ...pproximately 200 mV the acquisition stops and the waveform is saved on screen g Trigger the display and set SINGLE SEQUENCE on h V ER IFY That for each press of the STORAGE AC QUIRE button a waveform is acquired and saved on screen i Disconnect the test setup 5 Check Trigger Noise Rejection a Recall the Initial Front Panel Setup labeled FPNL see step i in INITIAL SETUP at the start of this procedu...

Page 165: ... graticule line using the HORIZONTAL POSITION control e Select TRIG POSITION and set Vs on f V ER IFY That the Trigger Point Indicator a T symbol is positioned on a time marker approximately 2 5 divisions to the right of the extreme left graticule line g Set the TRIGGER POSITION menu to V4 and verify that the Trigger Point Indicator moves to a time marker that is approximately at center screen h U...

Page 166: ...0300 ms 2 Verify the Sample Rate of the A and B Acquisition Systems and Check the Horizontal Display Accuracy a Recall the Initial Front Panel Setup labeled FPNL see step i in INITIAL SETUP at the start of this procedure Make the following changes to the front panel setup Select VERTICAL MODE Set CH 2 Off Set CH 1 VOLTS DIV 500mV ASEC DIV 100 ns A BTRIG B b Select TRIGGER MODE and set RUNS AFTER o...

Page 167: ...icator a small T on the displayed trace to the vertical graticule line 3 divisions left of center screen d Connect the MARKER OUT signal of a Time Mark Generator to the CH 1 OR X input connector through a 50 H Coaxial Cable Do not use a Termination e Set the Time Mark Generator s marker period to 20 p s Vertically position the bottom of the CH 1 display to 1 division below center screen f Select D...

Page 168: ...t the A TRIGGER OUTPUT TTL at the scope s rear panel to the CH 2 OR Y input connector with a 50 f l Coaxial Cable Do not use a Termination f Use the VERTICAL POSITION controls to position the CH 1 and CH 2 displays for easy viewing g Select TRIGGER SOURCE and push the EXT menu button h Set B EXT SOURCE 1 12 to 1 Press the A B TRIG button to return to the A Trigger System i Connect the output of a ...

Page 169: ...SETUP at the start of this procedure Make the following changes to the front panel setup Select CH 1 COUPLING INVERT Set 50 Cl ON OFF OFF Select STORAGE ACQUIRE Set AVG On Select VERTICAL MODE Set CH 2 Off b Connect the Calibration Generator s STD AMPLITUDE output to the CH 1 OR X input connector through a 50 Cl Coaxial Cable Do not use a Termination Set the Calibration Generator s output level to...

Page 170: ...IME CURSOR REF indicates approximately 2 00 ms h Set A ABS to ABS VERIFY That the cursor readout indicates approximately 180 00 i Set on V ER IFY That the cursor readout indicates approximately 50 00 j Set SEC on and A ABS to A k Select CURSOR FUNCTION and set 1 TIME on VERI F Y T h a t the cursor readout indicates approximately 500 00 Hz l Set VOLTS on Select CURSOR UNITS and set dB on m Use the ...

Page 171: ... will require thatyou do an Auto Setup on a waveform to verify specific although approximate values foramplitude and time related waveform characteristics These values are specific to the waveform that Auto Setup was performed on which was deliberately chosen due to Its amplitude DC offset and timing characteristics Therefore do NOT expect Auto Setup to return the same values for waveforms with di...

Page 172: ... is near the beginning of the 20 division waveform record and the Trigger SLOPE is positive r Set RES HI LO to HI in the Auto Setup menu s Push AUTO V ER IFY That the waveform is displayed with higher vertical resolution more amplitude than in part q about 5 divisions for this particular input waveform and that the amplitude is contained vertically on screen Also verify that about 1 2 cycles is in...

Page 173: ...heck and Functional Verification Procedure 2440 Service k Push menu item AGAIN VERIFY That SNAPSHOT readout updates the parameters P P and TOP are now about 200 mV l Select VERTICAL MODE and set CH 2 on Set the CH 2 VOLT DIV to the same setting as CH 1 m Push MEASURE and select SNAPSHOT Push TARGET CH 2 in the menu displayed n VERIFY That the parameter values are now displayed for CH 2 screens rea...

Page 174: ... advance to sequencer step 1 actions h V ER IFY That the SET STEP ACTIONS for Step 1 is displayed i Use the arrow buttons to move the underline to the N following the ACTION called REPEAT Push Y N to toggle the action to Y Y stands for Yes or On j Now move the underline to the ACTION called BELL and turn BELL on set to Y Using the same procedure turn PAUSE on also k Push NEXT STEP V E R IFY That t...

Page 175: ... during the instrument s power up sequence Performance Check and Functional Verification Procedure 2440 Service c VERIFY The GPIB STATUS SRQ light is still illumi nated when the power up sequence is finished d Recall the Initial Front Panel Setup labeled FPNL see step i in INITIAL SETUP at the start of this procedure Make the following changes to the front panel setup e Push SETUP OUTPUT the butto...

Page 176: ...p i in INITIAL SETUP at the start of this procedure Make the following changes to the front panel setup Select CH 1 COUPLING INVERT Set 50 f l ON OFF OFF Select CH 2 COUPLING INVERT Set 50 O ON OFF OFF Set CH 1 VOLTS DIV 200 mV CH 2 VOLTS DIV 200 mV Select TRIGGER SOURCE Set LINE On b Connect the RECORD TRIGGER OUTPUT rear panel to the CH 1 OR X input connector via a 50 Cl Coaxial Cable and a 50 O...

Page 177: ...rom the measurement I Set the CH 2 VOLTS DIV control to 5 mV j Install a 10X attenuator between the 50 0 Coaxial Cable and the 50 O Termination and reconnect the setup k C HECK D isplay front corner aberrations are within 1 0 2 division or less Exclude the first 20 ns immediately following the positive going transition from the measurement l Select VERTICAL MODE and set the CH 2 VOLTS DIV control ...

Page 178: ...he last 10X attenuator from the test setup s Move the 50 A Coaxial Cable from the CH 1 OR X input connector to the CH 2 OR Y input connector Insert the two 10X attenuators back into the test setup t Select VERTICAL MODE and set CH 2 on and CH 1 off Return the A SEC DIV control to 20 ns u Select BANDWIDTH and set 20 MHz on v Repeat parts c through r using the CH 2 VOLTS DIV control w Disconnect the...

Page 179: ...ll the Initial Front Panel Setup labeled FPNL see step i in INITAL SETUP at the start of this procedure Make the following changes to the front panel setup Select VERTICAL MODE Set CH 2 Off Set CH 1 VOLTS DIV A SEC DIV TRIGGER SLOPE 50 mV 2 p L S Minus Select BANDWIDTH Set 20 MHz On Select CH 1 COUPLING INVERT Set 5 0 fl ON OFF OFF b Connect the square wave output of a Pulse Generator to the CH 1 ...

Page 180: ... a 75 ft Coaxial Cable and a 75 H Termination NOTE For NTSC composite sync inputsignals the first field will have 263 lines while the second field will have 262 The scope will display the line number in the extreme upper right corner of the screen and the TVF TV Field number immediately to the right of the line number d Adjust the TRIGGER LEVEL control for a line number reading of 1 and a field nu...

Page 181: ...lt values normally established when an INIT PANEL is performed Performance Check and Functional Verification Procedure 2440 Service a Recall the Initial Front Panel Setup labeled FPNL see Step i in INITIAL SETUP at the start of this procedure Select TRIGGER MODE Set AUTO On Select VERTICAL MODE Set CH 2 Off Set CH 1 VOLTS DIV 5 V A SEC DIV 100 ps b Save CH 1 trace In REF memory 1 Position the CH 1...

Page 182: ...qualified service personnel VERIFY Internal memory status After the SELF TEST is completed confirm that the message ERASED appears immediately following the TEKSECURE ERASE MEMORY STATUS caption as well as after each of the captions for the individual blocks of RAM memory If FAILED appears after any caption perform parts g and h again to reexecute an Erase Memory If status is still FAILED this ver...

Page 183: ...edure Subsection three is External Calibration Here the user inputs test signals for the Attenuator and Trigger cali bration and initiates the semiautomatic routines that use those signals The internal jumper disabling the Extended Calibration EXT CAL menu must be removed to enable the EXT CAL menu choices as was necessary for the Display Adjustments in Internal Adjustments subsec tion The instrum...

Page 184: ...disabled by the installation of an internal jumper REINSTALLATION OF THE INTERNAL JUMPER TO PREVENT INADVERTENT ALTERING OF INTERNAL CALIBRATION CONSTANTS BY USERS IS RECOMMENDED Perfor mance of a Self Calibration only without performance of either of the other two subsections does not require the removal of the jumper or cabinet NOTE The Extended Calibration menu can also be accessed via the GPIB...

Page 185: ...power it ON Allow a 10 minute warm up before per forming the rest of this subsection c Press the MENU OFF EXTENDED FUNCTIONS but ton once or twice two presses are necessary if any menu is presently displayed one press if no menu is displayed to display the EXT FUNCT Functions menu d Press the menu button labeled CAL DIAG menu will change e Press the menu button labeled EXT CAL to display the EXT C...

Page 186: ...ch graticule line intersection where a dot is displayed NOTE When the Spot wobble compensation is badly out of adjustment three dots will be visible at each of the 33 dot locations ADJUST R583 or R584 to align the dots in either a vertically or horizontally oriented line then use the other control to adjust for only one dot at each dot location all three dots superimposed u Press any menu button t...

Page 187: ...mponents r ADJl ST HOFF VOFF HGA VGA IN IN j i HVEdtrv v ECCT Typical display No 5 when horizontal and vertical offsets gains and vector compensations are correctly adjusted 4917 16 5 5 Figure 5 2 a and b Display 5 Vertical and Horizontal Gain Offset and Vector Compensation adjustments pattern ...

Page 188: ...his display is located on the top circuit board near the left rear corner of the instrument see Figure 5 1 ac ADJUST R620 Integrator Time control for best front corner minimum roll up or roll off of the high frequency filled portion of the display See Figure 5 3 for further detail ad Push any menu button to exit display 6 If doing this adjustment procedure after a repair that required replacing ei...

Page 189: ... OFF EXTENDED FUNCTIONS twice then push the SPECIAL menu button and when the menu changes push CCD ADJ Now push the ADJ T1 A2 menu button to display the A and T clock adjust ment numbers T1 A2 will be underlined 2 Display menu for adjusting CM counts Push MENU OFF EXTENDED FUNCTIONS twice then push the SPECIAL menu button and when the menu changes push FORCE DAC The menu for adjusting the CM count...

Page 190: ... set the C M IO count to 4095 maximum count and then do the following If either GN DAC counts for side 1 and 3 are below 500 refer the instrument to service personnel for repair If the GN DAC counts for both side 1 and side 3 are within 500 3200 push WRITE TO CAL STORE and skip to subpart 4 If the GN DAC counts for either or both side 1 and 3 are above 3200 counts reduce the C M IO count C M IO st...

Page 191: ... adjustment e Do a SELF CAL and verify initial CCD gain Skip to and perform the procedure found under SELF CALI BRATION in this section At this stage of instrument adjustment SELF CALIBRATION may take several minutes to run rather than the 10 seconds mentioned in the SELF CAL procedure If instrument passes the SELF CAL see NOTE in SELF CAL procedure skip to part f of this procedure and continue If...

Page 192: ...rument should be referred to qualified service personnel for repair 5 GN DAC counts check SEC DIV should be set to 500 ns Push MENU OFF EXTENDED FUNC TIONS twice then SPECIAL then CCD ADJ Push ADJ Tl A2 to display the GN DAC counts TEST ING CHANNEL 2 should be displayed Check that the GN DAC counts for all four sides 1 4 are within 1000 3200 If one or more GN DAC counts are out side this range cha...

Page 193: ...F to ON in that menu For SN B010250 Above 3 Input test signal Connect the output of the secondary Leveled Sine wave Generator Item 2 to the CH 1 and CH 2 input connectors via a precision 50 ft BNC cable and a dual input coupler For SN B010249 Below 3 Input test signal Connect the output of the primary Leveled Sine wave Generator Item 1 to the CH 1 and CH 2 input connectors via a precision 50 ft BN...

Page 194: ...plays is no more than 1 division If mismatched by more than 1 division adjust R436 C456 and R525 for CH 1 and R263 C257 and R410 for CH 2 until the amplitudes match The CH 1 adjustments are located near the front of the instrument on the Main board between the CH 1 Preamp 1C U420 and the shaft to the POWER ON OFF switch the CH 2 adjustments are located between the CH 1 Preamp 1C U420 and the CH 2 ...

Page 195: ...1 sides to CH 2 sides Turn on SIDE 2 and turn all remaining sides off Rotate the CH 1 POSI TION knob to return CH 1 on screen positioned so that its ground reference indicator a small at the left edge of the screen is on the center horizontal graticule line Use the CH 2 POSITION knob to superimpose its ground refer ence indicator on CH 1 s Now adjust CH 1 L2D for best alignment of the CH 1 and CH ...

Page 196: ...ch adjustment iterating between making the adjustment and pushing A MODE as was done for the L clock adjustment screen Push the MENU OFF EXTENDED FUNC TIONS button twice then push SPECIAL then push CCD ADJ Now push the ADJ T1 A2 menu button to display the A and T clock adjustment numbers T1 A2 will be underlined NOTE After coarse adjustment performed in subparts 1 and 2 the adjustments outlined in...

Page 197: ...me display for presetting the CM counts except no CM count adjustment menu is displayed 4 Check CH 1 clocks at 100 ns and adjust if needed Set the SEC DIV to 100 ns If required adjust see NOTE below the CHI TIS TID A2D and A2S adjustments so that all four sides num bered 1 4 at extreme left have GN DAC counts within 700 3500 GAIN MIN counts greater than 92 and the CLIP LIMIT counts greater than 11...

Page 198: ...en completely adjusted CHI CH2 50 50 mVO v A 200 ns 17 6 A mV P EXT2 Y T J r A V u f ___1 I t j I f Y u u M il H I R1 11ifr h Vs 7 S o x jt 2 ACours m S j Si l i t RS iS CH1 SAV CH EREF 2 sot REF ST R ACK EF 6603 56 1 Set up for checking CCD side alignment The SEC DIV control should be set to 200 ns Adjust generator frequency to display about 2 cycles on screen 2 Verify good alignment of and betwe...

Page 199: ...persion Push A HOR IZONTAL MODE and readjust if necessary Con tinue to iterate until no change is noted when A HORIZONTAL MODE is pushed 5 Adjust CH 2 100 ns L clock Vertically posi tion the CH 1 display up off screen and position the CH 2 display back on screen Set the CH 2 L2D100 adjustment for the best alignment of all 4 sides minimum sample dispersion Push A HORIZONTAL MODE and readjust if nec...

Page 200: ...d near the front of the instrument on the Main board between the CH 1 Preamp 1C U420 and the shaft to the POWER ON OFF switch c Adjust CH 2 transient response Disconnect the test signal at the CH 1 input and move to the CH 2 input Push VERTICAL MODE and set CH 2 on and CH 1 off Set CH 2 VOLTS DIV to 20 mV and vertically center the display as required Now adjust R263 C257 and R410 for best front co...

Page 201: ...m s amplitude to set to 4 4 divisions Push WRITE TO CALSTORE menu button when finished 6 Set up CH 1 and adjust the 50 mV bandwidth Install a 10X attenuator between the generator s leveling head and the CH 1 input and set the CH 1 VOLT DIV to 50 mV Repeat subparts 4 and 5 using the 50 mV VOLTS DIV setting instead of 100 mV 7 Adjust the 10 mV 5 mV and 2 mV bandwidth Install a 5X attenuator between ...

Page 202: ... the Main circuit board e Move the test setup to the CH 2 input connector f Select VERTICAL MODE and set CH 2 on and CH 1 off g Set the CH 2 VOLTS DIV control to 10 mV h Repeat parts c and d for CH 2 adjusting L431 for part d i Set the A SEC DIV control to 100 ns j Connect the Leveled Sine wave Generator output via a 50 fl precision cable and two 10X attenuators to the CH 2 input connector k Set t...

Page 203: ...t the Full Field Signal output of the video sig nal generator to the CH 1 input of the scope via a 75 S 2 cable and a 75 fi terminator d Set the generator output for a field square wave producing a 100 IRE pedestal output for all lines One line of video with sync tip and color burst should be displayed on screen in CH 1 See top waveform in Figure 5 12 e ADJUST R419 while watching the output signal...

Page 204: ...corner of the crt screen for approximately 10 seconds as the instrument performs its automatic calibration routine NOTE After successful completion of the automatic calibra tion routine RUNNING will disappear from the CRT screen and PASS will be displayed above the SELF CAL menu button label Press the MENU OFF EXTENDED FUNCTIONS button to return the instrument to control settings in effect before ...

Page 205: ...D OUTPUT of the Calibration Generator to the CH 1 input connector through a 50 fi cable f Press the menu button that is labeled ATTEN GAIN CONNECT CHI TO 0 2VDC will appear Set the gen erator output to 0 200 volts g Press the ATTEN GAIN button again RUN NING will be displayed near the lower right corner of the screen h When the display changes from CONNECT CHI TO 0 2VDC to CONNECT CHI TO 2 0VDC ch...

Page 206: ...ill appear Set the generator output to MAX g Press the RUN button RUNNING will be displayed near the lower right corner of the screen NOTE After successful completion of the Channel Delay Calibration sequence RUNNING will disappear from the CRT screen and PASS will be displayed above the CHAN DLY menu button label If the cali bration routine is NOT successful FAIL will be displayed above the CHAN ...

Page 207: ...G menu will change c Press the menu button labeled EXT CAL to display the EXT CAL menu Then press the menu button labeled CTE CAL A short synopsis of the next calibration step will be displayed N O T E The m essage TH IS M U S T B E TH E L A S T S T E P also appears in the m enu It is a rem inder th a t the C T E C alibration m ust be done a fte r any adjustm ent o f the C C D d o cks o r Transien...

Page 208: ......

Page 209: ...onse adjustments which affect high frequency performance require both external signals and internal manual adjustments Calibration Levels Instrument calibration occurs at several levels These levels are the fully automatic SELF CAL the semiau tomatic EXTENDED CAL the manual adjustments and dynamic calibration Self Calibration Almost all of the internal measurement systems are calibrated by perform...

Page 210: ...fine gain adjust ment of the attenuators is made the relative accuracy of the internal 10 V Calibration Reference is also checked by normalizing it to the external voltage source provided by the technician If the fine gain of the attenuators requires an adjustment of more than approximately 2 the ATTEN calibration fails Barring internal component problems a failure indicates either that the intern...

Page 211: ...ble 6 1 lists the relative susceptibility of various classes of semi conductors Static voltages of 1 kV to 30 kV are common in unprotected environments When performing maintenance observe the following precautions to avoid component damage 1 Minimize handling of static sensitive components 2 Transport and store static sensitive components or assemblies in their original containers or on a metal ra...

Page 212: ... use of chemical deeming agents which might damage the plastics used in this instalment Use a nonresidue type cleaner preferably isopropyl alcohol or a solution of 1 mild detergent with 99 water Before using any other type of cleaner con sult your Tektronix Service Center or representative Exterior INSPECTION Inspect the external portions of the instrument for damage wear and missing parts use Tab...

Page 213: ...ocedure are the C H 1 an d C H 2 A tten u ato r assem blies C lean these assem blies only w ith isopropyl alcohol as described in S tep 4 o f the cleaning procedure In addition a ll o th er F ro n t P an el controls a re sealed an d require no m aintenance 1 Gain access to the parts to be cleaned by removing easily accessible shields and panels see Removal and Replacement Procedure 2 Spray wash di...

Page 214: ...socket using long nose pliers and reinsert firmly Ensure that straightening action does not crack pins causing them to break off Wiring and Cables Loose plugs or connectors Burned broken or frayed wiring Firmly seat connectors Repair or replace defective wires or cables Chassis Dents deformations and damaged hardware Straighten repair or replace defective hardware LUBRICATION There is no periodic ...

Page 215: ...ts in this instrument are shown on the schematic diagrams Refer to the first page of the Diagrams sec tion for the reference designators and symbols used to identify components Important voltages and waveform reference numbers enclosed in hexagonally shaped boxes are also shown on each diagram Waveform illustrations are located adjacent to their respective schematic diagram Circuit Board Illustrat...

Page 216: ...iagram lists the grid coordinates of each component shown on that diagram To aid in physically locating components on the circuit board this table also lists the grid coordinates of each component on the circuit board illustration Near each circuit board illustration is an alphanumeric listing of all components mounted on that board The second column in each listing identifies the schematic diagra...

Page 217: ...MENU buttons after entering the Extended Diagnostics Mode Entry into the Diagnostic Mode and its uses are explained in the Cali bration and Diagnostics discussion later in this section Maintenance 2440 Service 3 C heck C ontrol S etting s Incorrect control settings can give a false indication of instrument malfunction If there is any question about the correct function or operation of any control ...

Page 218: ...anges in Table 6 4 the supply can be assumed to be working correctly If the supply is not within specified ranges the fault may or may not be located in the power supply circuitry A defective component elsewhere in the instrument can create the appearance of a power supply problem and may also affect the operation of other cir cuits Use the power supply troubleshooting charts to aid in locating th...

Page 219: ... instrument repair This part of the manual describes special techniques and procedures required to replace components in this instrument If it is necessary to ship your instrument to a Tektronix Service Center for repair or service refer to the Repackaging for Shipment information in Section 2 of this manual MAINTENANCE PRECAUTIONS To reduce the possibility of personal injury or instru ment damage...

Page 220: ...ing pins The fol lowing information provides the replacement procedures for the various types of connectors End Lead Pin Connectors Pin connectors used to connect the wires to the inter connect pins are factory assembled They consist of machine inserted pin connectors mounted in plastic hold ers If the connectors are faulty the entire wire assembly should be replaced Multipin Connectors When pin c...

Page 221: ...8 Vacuum Solder Extractor No static charge retention Unsoldering static sensitive devices and components on multilayer boards Pace Model PC 10 9 Contact Cleaner and lubricant No Noise R Switch and pot cleaning and lubrication Tektronix Part Number 006 0442 02 10 Pin Replacement Kit Replace circuit board con nector pins Tektronix Part Number 040 0542 00 11 IC Removal Tool Removing DIP 1C packages A...

Page 222: ...n tip to the solder joint Apply only enough solder to make a firm joint After soldering clean the area around the solder connection with an approved flux removing solvent such as isopropyl alcohol and allow it to air dry S C A U T IO N Only an experienced maintenance person proficient in the use of vacuum type desoldering equipment should attempt repair of any circuit board in this instrument Many...

Page 223: ...component is positioned the same as the original component Most components should be firmly seated against the circuit board 5 Touch the soldering iron to the connection and apply enough solder to make a firm solder joint Do not move the component while the solder hardens 6 Cut off any excess lead protruding through the cir cuit board if not clipped to the correct length in Step 3 7 Clean the area...

Page 224: ...Maintenance 2440 Service A12 PROCESSOR BOARD Located near the back on the A10 Main board bottom component side 6603 32 Figure 6 2 Circuit Board Location 6 16 ...

Page 225: ...retain a charge fo r several m inutes a fte r the instrum ent is p ow ered o ff an d can rem ain charged fo r a longer p erio d if a b leed er resisto r o r o th er p o w e r supply problem occurs B efore beginning an y cleaning o r w ork on the in ternal circuitry o f the instrum ent discharge the capacitors by connecting a shorting strap in series w ith a 1 k 2 5 w a tt resisto r across the capa...

Page 226: ...em The two retaining latches are located near the left front and left rear corners of the Timebase Display board e Grasp the left edge of the Timebase Display board and rotate it and the Top chassis upward about 45 degrees While supporting the Top chassis disconnect the ribbon cable connector at J131 left front corner of the Timebase Display board and the flex cable at J125 right rear corner of th...

Page 227: ... Side board p Remove the anode lead from its retainer and dress it away from the lower square hole in the Main chassis Take care not to separate the male end of that lead from the female end q Disconnect the ribbon cable connector from J152 of the Main board J152 is located in front of the High Volt age shield at the lower left side of the instrument r Carefully route the connectors disconnected i...

Page 228: ...o be removed turn the Main board over Then desolder the 13 pins two groups one of five pins the other of eight that connect the Gain Cell board to the main board working from the bottom of the board When the pins are free the board can be removed To rein stall remount and resolder Reverse parts a through m to install the Main board 6 Side Board Removal a Perform Step 1 to remove the cabinet from t...

Page 229: ... edge of the board h Disconnect the remaining ribbon connector from J105 on the Main board i Pry outward on either one of two retaining latches securing the fan on its mounting posts As the latch clears the edge of the fan pull the fan outward and away from the instrument to remove The latches are located at opposite corners one at the bottom comer nearest the rear the other at the top comer neare...

Page 230: ...way from the top side of the Low Voltage Power Supply assembly p Grasp the front of the Low Voltage Power Supply bracket and lift up until the Low Voltage Power Supply board is clear of the retaining latches unlocked in part m q Pull the board towards the front of the instrument until its rear edge clears the two channel notches while lifting upwards to complete the removal of the assembly Reverse...

Page 231: ...t frame n Grasp the face of the crt and pull it forward while guiding the crt anode lead and the other cable discon nected in part f through their holes in the crt shield It may be necessary to reposition the ribbon cable disconnected in part j as the removal of the crt is completed Reverse parts a through n to install the crt When installing the crt frame removed in part m to the casting refer to...

Page 232: ... d Insert the tip of a screwdriver through the hole in the Low Voltage Power Supply board that is directly above the Attenuator to be removed Remove the screw securing the rear of the Attenuator to the Main Board e Rotate the Timebase Dispiay board to its mounting position and temporarily secure it by rotating the two black retaining lugs 1 2 turn clockwise to lock them The two retaining latches a...

Page 233: ...solate the failure to lower level subsystems and to test those subsystems down to the lowest possible level In addition to the calibration and diagnostic routines just mentioned there are the Special diagnostic features useful for instrument troubleshooting and Service Rou tines which are usually used with the Extended Diagnos tics to isolate instrument failures CALIBRATION ROUTINES SELF CAL When ...

Page 234: ...formation is found at the beginning of this section under Instrument Calibration CAL DIAG menu All calibration routines are accessed by selecting CAL DIAG from the EXTENDED FUNCTION menu they can also be run via the GPIB The EXTENDED FUNCTIONS menu is selected by the MENU EXTENDED FUNCTIONS button when no other menus are displayed Pressing the bezel button under the CAL DIAG menu label produces th...

Page 235: ...k on In this case calibration may be performed one minute after completion of the power on routine 0000 Top Level of the Extended Diagnostics When run the Self Diagnostics are done see Self Diagnostics in this section 1000 9000 Second level first level under top level When any of these nine levels run all sublevel tests below the running second level are done All eight of these second level tests ...

Page 236: ...ls 3700 and 3800 may only be executed from EXT DIAG and then only if internal jumper J156 is removed 2 CKSUM NVRAM tests at level 6000 are only executed at power on When selected from EXT DIAG only the flag status is changed 3 The ATTENUATOR test at the 8700 level the EXT TRIG OFFSET and GAIN tests 9114 17 9124 27 9213 16 9223 26 and the REPET test 9300 are not run when Self Diagnostics are run Ne...

Page 237: ...on the TRIG D LED for the binary code for 1 then all the LEDs are again turned on as the code digit delimiter 6 The third number of the failed test three is shown by turning on both the TRIG D and the READY LEDs Their binary values are summed 1 2 to obtain the third number of the failed test three and all the LEDs are again lit to separate the digits 7 The fourth and final number of the failed tes...

Page 238: ... 6285 31 Figure 6 5 Main EXT DIAG Menu NOTE A diagnostics name in the Extended Diagnostics menu followed by an asterisk is not testable The asterisk indicates either that the test is run only dur ing an EXT CAL or run at power on SELF DIAG only The PASS FAIL status is the result of the last EXT CAL or the last power on check A FAIL label on an asterisked test is accompanied by the RUN SELF CAL THE...

Page 239: ...e status fo r sublevel tests in the E X T D IA G m enus can also be blank B lank status indicates th at the results o f the tests belo w the sublevels is unk now n such as w hen a C O L D S T A R T has been perform ed D iagnostic T e s t and C alib ratio n F ailures Failures of the diagnostic tests run as a result of exe cuting Extended or Self Diagnostics as well as those run due to performance o...

Page 240: ...ts be run from the EXT DIAG menu however since the FAIL status at the second level 8000 and or 9000 might or might not be the result of the sublevel Extended Calibration test the EXT DIAG can be used to determine if it was an EXT CAL test that failed Although these tests are not run at the Self Diagnostic level a failed status will result in the instrument displaying the Extended Diagnostics menu ...

Page 241: ...ting to be performed if the data scrambled is the instrument s calibration constants After a COLD START a SELF CAL and the ATTENuator TRIGGER and REPET EXT CAL must be performed to return the instrument to its previous state A COLD START can be initiated in three ways One J156 can be removed and the SPECIAL Diagnostics menu can be used to COLD START the scope as an aid in ser vicing it Second a CO...

Page 242: ...If an error occurs during SELFCal it is reported to the controller when the ERRor query Is issued to the instru ment ERRor returns a string of error numbers up to nine resulting from the last EXEcute command These numbers will be the highest order in the hierarchy of the SELF CAL routine so to locate the exact test that failed in the tree the TESTNum must be set to a lower level and the ERRor quer...

Page 243: ...o several types The Troubleshooting Procedures of Table 6 6 provides a description of the tests made and in many cases the troubleshooting procedure used in case of a test failure Other areas of the scope require more exten sive troubleshooting trees These areas are the Low Volt age Power Supply the Video Option the Display System and the Time Base and System Clocks Troubleshooting trees are locat...

Page 244: ...N _ NO PROCEDURE 6 DEAD START X l S THE CRT DISPLAY N NORMAL NO _ is THERE ANY CRT DISPLAY __ 1 YES 1YES PROCEDURE 3 POWER ON DIAGNOSTICS PROCEDURE 6 DISPLAY PROBLEMS NO PROCEDURE 5 GPIB OPERATION 6603 33 Figure 6 6 Initial troubleshooting chart ...

Page 245: ...ak then it is an analog problem Go to Procedure 6 4 If portions of the readout are missing or wrapped over but the power on test runs the front panel controls and the EXT DIAG menus may still be useful Attempt to use the diagnostics to determine the failed tests Also read the binary code of the first failed test that is flashed by the Trigger LEDS during the power on sequence Use that information ...

Page 246: ...ET acquisition mode AUTO LEVEL VERT trigger DC Trigger COUPLING and set the SEC DIV setting to 5 ns Then select ACQUIRE and connect a probe from the CH 1 input to TP291 TTLB1 found above A10U450 the CH 1 CCD on the main board If there are bands of missing data points every two divisions or only a few data points are placed every two divisions or the waveforms are distorted the problem may be in th...

Page 247: ...and B Trigger Mode to obtain coincident triggering HORIZONTAL A and B SEC DIV MODE VERTICAL MODE COUPLING VOLTS DIV POSITION TRIGGER A TRIGGER SOURCE A LEVEL SLOPE MODE B TRIGGER SOURCE MODE 200 ns B CH 1 and CH 2 DC 2 V Traces to graticule center EXT1 A B 500 mV minus NORMAL EXT2 TRIG AFTER EXT CLK OFF Now connect the EXT1 to U750 and U752 pin 1 and EXT2 to U750 and U752 pin 19 The input output p...

Page 248: ...ible without going to SAVE mode on the test scope 2 If the signals checked in Step 1 are active go to Step 3 If these signals are not actively switching perform the Front Panel MUXTEST to check that the nP drives the MUXSEL signal lines in a tight looping routine In the MUXTEST only the MUXSEL signal output lines are being driven No out put will be seen on the S7C or SHCLK lines pins 29 and 30 res...

Page 249: ... to 100 M s and the VOLTS DIV to 2 V 4 Power on the 2440 When it does the power on test it will signal a test failure of 4300 on the Trigger LEDs and there will be no display on the 2440 crt 5 Rotate the following rate position pots CH 1 Vertical Position CH 2 Vertical Position Horizontal Position Cursor Delay Position 6 Check that the pots go into the rate region at both extremes of rotation and ...

Page 250: ...the BEZEL switch for WORD The voltage should go close to 4 V with about a 1 V p p 2 kHz square wave superimposed upon it peak of 5 V If the 4 Vdc is not present check the signal path back to A12U760 pin 16 If the 2 kHz is missing check back to the oscillator circuit A12U274 CALIBRATOR Calibrator schematic diagram 13 PROBLEMS NOTE M ake sure that you have not made the mistake of viewing the Calibra...

Page 251: ...s point Troubleshoot the DAC multiplexers U831 U821 U960 and U830 and the individual DAC output ports schematic diagrams 5 and 6 4 If the levels at TP650 and TP660 are bad check DAC multiplexer U651 the DAC inputs U800 pins 1 through 12 and current to voltage converter U661C Should see U661C having an output of 32 dc levels switching from one to the next each 2 ms and then repeating The maximum ou...

Page 252: ... 0 10 V 4 76 12 1 CM1E U631 7 1650 0 27 V 4 76 12 1 CH 1 CCD Sides 2 and 2000 0 04 V 4 76 12 1 4 offset from 1 and 2 2 2 0 0 0 10 V 4 76 12 1 DAC values for CH 1 and CH 2 POS are not written after a COLD START until an acquisition occurs Turn off EXT DIAG menu and press ACQUIRE then return to FORCE DAC bEach GNxx DAC output has a unique constant for each SEC DIV setting between 100 and 100 ns Each...

Page 253: ... 4095 3 34 V 4 20 V 3 3 5 V INTN U820 8 3160 0 78 V 1 3 7 V 1 36 V Increases intensity NORM U820 7 1640 0 2 8 V RD01 U820 14 2050 0 V CURS CAL U610 3 2048 0 50 1 3 7 V 1 36 U610 3 0 V 0 V Current output into U610 4 0 V 0 V 75 fl loads U610 6 0 V 0 V U610 13 0 V 0 V U610 15 O 2 0 V HORF U631 8 100 3 90 V 4 1 1 V 4 09 V Increases holdoff DACO U650 6 2048 0 04 V 13 92 V 1 3 1 5 V Unbalances DAC DACG ...

Page 254: ...imum SEQUENCER Sequencer Output circuitry schematic diagram 20 OUTPUT PROBLEMS SEQUENCE OUT doesn t switch LO at the end of a sequence or back HI when the sequence is exited after completion 1 Create a sequence with one step and no PAUSE The front panel setup is arbitrary for the step see Operators Manual for operating the Sequencer 2 RECALL the sequence Check that Q104 s collector is HI before th...

Page 255: ...lable go to Procedure 6 to troubleshoot the display problem 6 DISPLAY TROUBLESHOOTING INTENSITY No Intensity HV Supply and CRT schematic diagram 19 If there is no GPIB capability troubleshooting is going to be more difficult if no display is available The steps in this table address the analog problems not detectable by the Extended Diagnostics in any case Digital failures of the Display System ar...

Page 256: ...cated in the FORCE DAC test table If DAC outputs are ok troubleshoot Intensity multiplexer A10U811 schematic diagram 6 and its select signals and the Z axis signal amplifiers A10U810 and A10U812 Troubleshoot DAC circuit if the DAC outputs are bad see the DAC System troubleshooting procedure i 6 Check the DISDN signal at U414A pin 6 and the PRESTART DISPLAY signal at U323A pin 3 for correct operati...

Page 257: ...tages for correct levels If not correct trouble shoot faulty circuit Poor Focus at High Intensity 1 Check the HIGH DRIVE FOCUS adjustment 2 Check the wiper of R400 for a varying voltage as the DISP INTENSITY is increased to high inten sity levels If not correct check Q500 CR500 and VR316 for shorts or opens 3 If the output of R400 tracks the display intensity changes check R395 R297 C295 and PI 74...

Page 258: ...n of the extended diagnostics routines of this scope the calibra tion and diagnostics information supplied in the Diagnostics subsection of this section may prove very useful 0000 Running extended diagnostics at this level runs all tests It is equivalent to SELF DIAG in the EXTENDED CAL DIAG menu A failed test is indicated by a FAIL label in the main Extended Diagnostics menu Go DIAGNOSTICS to the...

Page 259: ...in the first four 16 K byte address spaces o f R O M O O RO M O 3 respectively the second fo u r p ages 4 7 in the second four 16 K byte address spaces respectively etc T hat is why in the previous exam ple the lab el fo r te s t level 1320 is RO M O 1 5 w here 5 indicates the fifth page P age 5 is the fifth p ag e fo r the en tire p aged S ystem R O M it is the second p ag e o r 16 kbyte m em ory...

Page 260: ...mes have the convention of assuming the name given to the schematic designated chip select line for that register i e MISC is the name of the chip select on the time base display board to registers U532 and U540 The register tests are organized by circuit board Where possible a set of four bit patterns have been used The register tests have the capability of testing for stuck bits both high and lo...

Page 261: ...ess Decode circuitry U884 U862 and U866 5 While selected check that U854 pin 11 is set to the state of U860 pin 19 If DIAGO failed and the chip selects to U854 and the signal to U854 pin 11 are ok then U854 is probably defective 2120 Interrupt Register A12U654 schematic diagram 1 and DCOK logic circuitry A16U395 and associated DCOK U654 components schematic diagram 23 Testing Method The power supp...

Page 262: ...rnate PCREG chip selects If not suspect problem with U860 4 Check INTREG U654 pin 15 for a LO to HI transition when BUSTAKE on PCREG U860 pin 16 is set from LO to HI if not then check U332D schematic diagram 2 for correct gating 2140 Processor Miscellaneous Out and Processor Miscellaneous In Registers A12U750 and A12U854 DIAG1 Diagnostic Bit 1 schematic diagram 1 Testing Method This is the first t...

Page 263: ...est fails the test result is set to FAIL Troubleshooting Procedure If test FAIL then look for failure using the following steps 1 Set up the test scope as per Step 1 of the 2110 troubleshooting procedure Now using CH 2 probe 2 Run test 2150 in CONTINUOUS mode and check that U550 pin 1 COMREG is set LO during the period that the clock line WWR to U550 at pin 9 has a LO to HI transition This may be ...

Page 264: ...on This may be done by saving the COMREG signal in REF1 and displaying while acquiring the clock pulse on U550 pin 9 If these signals are not coincident then troubleshoot the cause 3 Check that U550 pin 10 has a HI to LO transition on the first enable and a LO to HI transition after the second clock pulse goes LO to HI If bad change U550 if good check chip enable at U854 pins 1 and 19 is LO after ...

Page 265: ...ocedure If test FAIL then look for failure using the following steps 1 Set up the test scope as per Step 1 of the 2110 troubleshooting procedure Now using the CH 2 probe 2 Run test 2180 in CONTINUOUS mode and check the clock line to A12U750 TVREG pin 11 schematic diagram 20 for LO to HI transitions There should be two clock pulses under the trigger strobe If not troubleshoot the clock source back ...

Page 266: ...ns to detect faults If marked FAIL at this level go to the lower levels in the menu to test for the failed register The four bit patterns sent in each of the register tests are as follows Test 1 10100101 is sent to the input latch and read back via the output buffer Test result is set to fail if not a match Test 2 01001011 is sent and read back Test result is set to fail if not a match Test 3 1001...

Page 267: ...d back buffer U542 The test result is set to PASS any failure sets it to FAIL If run from this level all four tests are selected in turn One may execute any one test by selecting 2221 to 2224 The test involves writing four unique patterns see test 2200 to U541 and reading them back from U542 The four patterns test for all stuck at s and for lines shorted to other lines By know ing which test fails...

Page 268: ...ng procedure Using the CH 2 probe 2 Run test 2230 in CONTINUOUS mode and check U530 pin 1 for DISCON LO during the time of the trigger strobe If not troubleshoot the Register Select circuit U550 and U450D for proper operation 3 Check U530 pin 11 for dock pulse activity WR strobe from System P 4 If 2 and 3 above are ok then select a pattern test and check that the data lines are the same states as ...

Page 269: ...pins 1 and 19 for the YDIAG pulse after the clock pulse to U241 If ok replace U141 If not present replace U550 schematic diagram 17 2320 Time Cursor Register A11U441 schematic diagram 16 TCURS Testing Method The TCURS test checks two ICs U441 is a latch and the read back is Diagnostic Buffer U243 The test result is set to PASS any failure sets it to FAIL If run from this level all four tests are s...

Page 270: ...pattern into the display counters U220 and U211 with the LDCOUNT strobe data loaded to U222 is fixed Their outputs are selected by U221 U212 U210 holding U414A in the reset mode and not PRESTART Since the STOPDIS line is LO the display counters are selected as the source to the Q bus U210 U212 U221 The inputs to U130 are the bits Q1 Q5 where Q1 Q 3 0 and Q4 Q5 are the bO bl data of pattern To read...

Page 271: ...uffer U140 diagram 16 U140 Testing Method If run from this level all four tests are selected in turn or one may execute any one test by selecting 2341 to 2344 This test requires the display state machine to be operative There is no good way to insure that it is functional and there have been no previous tests Therefore if this test fails it could be for several rea sons other than U140 Initializat...

Page 272: ...bits 0 through 5 Test 4 00101101 is loaded and read back via U141 Test result is set to FAIL if not a match on bits 0 through 5 NOTE OO through 04 0 Q4 through Q11 map to DO to D7 i e Q7 D3 By knowing which test FAILS and the bit pattern one may easily determine the problem bit s look for the bit column in the failed tests that are the same If 2 or 3 tests fail then there is a bus problem of some ...

Page 273: ...ls it could be for several reasons other than U240 Initialization DISCON 01100000 Significant bits are b2 b5 b6 and b7 STOPDIS enable Q bus not ENV mode MODECON 00010000 Significant bit is b3 U240 MISC 00100000 Significant bit is b5 ZAXIS OFF The test result PASS The test is to load a pattern into the display counters U220 and U211 with the LDCOUNT strobe The counter outputs are switched to the Q ...

Page 274: ...f U222 U220 and U211 2 Verify that after LDCOUNT strobe the outputs of Address Multiplexers U222 U220 U211 are stable and of the correct level for the test selected 3 Verify that U323A pin 3 is LO 4 Verify the outputs of U221 U212 and U210 are stable and correct after the LDCOUNT strobe to the previous bus 5 Verify the RO chip enable to U240 pins 1 and 15 is LO If ok to here replace U240 2360 Vert...

Page 275: ...e failing test or tests 5 Check pin 20 DEY and pin 18 CSY of U431 for a negative strobe coincident with the YSEL strobe If either is not present troubleshoot U421 and the input signals to it 6 Check that pin 21 of U431 WE is HI during the HI portion of the trigger strobe displayed on CH 1 of the test scope The data writes of the test patterns occur during the LO portion of the trigger strobe and t...

Page 276: ...is not present troubleshoot U421 and the input signals to it 6 Check that pin 21 of U440 WE is HI during the HI portion of the trigger strobe displayed on CH 1 of the test scope The data writes of the test patterns occur during the LO portion of the trigger strobe and that activity can be seen If the WE signal is not correct troubleshoot U422 and the input signals to it 7 Replace U440 2400 Running...

Page 277: ...1 sig nal is LO and REF2 signal is HI Compare the results to 01000000 where U641 pin 11 is D7 and U641 pin 18 is DO If they do not compare replace U641 4 Test the output of U670 at pin 26 for a square wave signal TIMER with a period of about 200 ais if not present replace U670 5 If present test for the square wave at U680 pin 16 and replace U680 if missing 6 If all checks were ok suspect A12U542 s...

Page 278: ...oot using the procedure given for that number 4 If U380A pin 1 is LO then find which cathode of the input diodes CR185 CR186 CR286 or CR287 is LO Run the test number for the suspected Shift Register and check the inputs clocks data and power to it look at the information given with the test number for the troubleshooting procedure for each Shift Register If they are all ok replace the suspected Sh...

Page 279: ... probe 1 Check U530 pin 9 for a HI level If LO then check R531 and source of 5 V 2 Check U530 pin 8 for activity PD SR CLK signal line if inactive repair 3 Check U530 pins 1 and 2 for activity ACD line is the data input Repair if inactive 4 If all inputs are good replace U530 2540 Acquisition Control Register A10U270 schematic diagram 5 GATE ARRAY Testing Method For this test the MSB of U270 pin 1...

Page 280: ...g Method For this test the MSB of A10U851 pin 13 will be compared with what the MSB should be with each shift of the register If one of the bits differs from the loaded in pattern the test fails Troubleshooting Procedure Set up the test scope as in Step 1 of the 2110 troubleshooting procedure NOTE For the following set the Trigger Position of the test 2440 to 3 4 if using an analog scope for testi...

Page 281: ...ack is U761 If all tests pass the test result is set to PASS any failure sets it to FAIL N O T E B it 3 o f the te s t p attern s is n o t allow ed to b e s e t LO as it w ould re s e t the G P IB chip and w e cannot re s ta rt it from the diagnostic routines Test 1 10101101is sent to U762 and read back via U761 Test result is set to FAIL if not a match Test 2 01001011is sent to U762 and read back...

Page 282: ...rementing address the TRIGGER SLOPE LED is lit A logic zero is shifted right through a field of zeroes while decrementing the address the TRIGGER SLOPE LED is lit Running level 3000 causes all four parts of the test to be performed on all 8 RAMs sublevels 3100 3800 while running an individual sublevel test causes the four part test to be performed on the corresponding RAM device Running a sublevel...

Page 283: ... If no activity stuck HI or LO when output enable is LO then suspect U314 otherwise suspect U440 3300 RAM A12U350 schematic diagram 2 A12U350 ___________________________________________________________________ Troubleshooting Procedure If test FAIL then look for failure and correct using the following steps Select test 3310 and RUN CONTINUOUSLY Using the CH 1 probe 1 Check for activity on the pin ...

Page 284: ...__________ Troubleshooting Procedure If test FAIL then look for failure and correct using the following steps Run test 3510 in CONTINUOUS mode 1 Check for LO on chip select line U600 pin 18 Repair if not LO 2 Check for activity on the write enable line to U600 WE pin 21 If no activity work backwards and find the problem 3 Check for activity on the output enable line to U600 OE pin 20 If no activit...

Page 285: ...vel 3 7 0 0 tests the 70 0 0 H to 8F F F H block w hile level 3 8 0 0 tests the 0 0 0 0 H 5 F F F block resulting in the entire 3 2 K x 8 R A M being tested The Troubleshooting P rocedure th a t follow s applies to both te s t levels Troubleshooting Procedure N O T E If the S ystem R am d ata bus chip selects o r o utpu t enable lines a re defective the System fiP cannot run the the diagnostics te...

Page 286: ...ommands The Front Panel nP internal diagnostics require that the ixP be reset Therefore the structure of the FPP tests is such that the processor is initialized when completed This requires that ALL of the tests be run in order Therefore all tests will be run even though it appears that only a sub test is being executed Test Steps 4100 U861 pin 9 should be reset to its LO state via U862B and U862A...

Page 287: ...9 for correct waveshape and timing CH 1 2V A 5m s 5V 84ms TO NEXT PULSE TRAIN 7 ns 7 ns 7 ns 4917 29 Figure 6 9 Front Panel mP diagnostics test 3 If the test waveform is not present and the supply voltage the ground and the clock are correct change the Front Panel mP it is possibly defective If the Front Panel tiP checks out ok turn off the power and remove the jumper connected for the preceding F...

Page 288: ...om the strobe at U861 pin 1 If occurring replace U861 4300 A13U700 pin 12 WR TO HOST 1 Check that U861 pin 9 has a HI pulse If not select 50 ms div and ENVELOPE acquisition mode on the test scope then run test 4000 for the scope under test At pin 12 of U700 check for a strobe occurring near the falling edge of the trigger strobe If the strobe is ok replace U861 If missing test for 4 MHz at U700 pi...

Page 289: ... is NULL If the test passes it means that it is not defective in that direction Troubleshooting Procedure 4710 HIGH 1 Measure the drop across A12R900 for a voltage in the range 2 4 V to 3 7 V If the battery voltage is in range proceed to step 2 otherwise proceed to step 3 2 Check the voltage at A13U700 pin 21 in the range of 2 4 V to 3 7V If the voltage is correct replace A13U700 If the voltage is...

Page 290: ... that permits the System pP to control the Waveform pP bus 5100 RUN TASK Testing Method Loads a task into Command Memory U440 and tells the Waveform xP to execute it A 30 ms time out is executed and then INTREG bit 0 is tested for WPDN If it has not been set the task did not execute and terminate properly If 5100 fails it could be the Waveform Processor code ROMs or the Waveform pP itself U470 In ...

Page 291: ...S S flags in the E xtended D iagnostics m enu show the results o f the la s t test ran If a defective device th at has previously caused a FA IL flag to b e s e t is replaced the test m ust be run again to obtain a P A S S indication in the m enu When the instrument is SELF CALIBRATED a CRCC is calculated and stored for the Calibration Con stants in NV RAM When power down is executed the values of...

Page 292: ...n the AutoStep Sequence menu push PRGM If this event is due to a component failure the RAM test 3700 and or 3800 or BATT STATUS test 4700 should also have failed Check NVRAM device U664 and associated circuitry or the Battery circuit as appropriate The reference waveform memories will be declared EMPTY if the WFM HEADERS do not check correctly These waveforms are stored in A12U350 Therefore if the...

Page 293: ... both of the channels If both channels fail 1 Check the CCD clocks To determine if a clock problem is internal or external to the CCD Clock Driver hybrid compare the collector voltages of Q450 and Q460 to Waveform illustration 67 associated with schematic diagram 10 If either of the clock waveforms is different check the base of the associated transistors If the base voltage is switching correctly...

Page 294: ... Drivers Verify that pin 2 CCDOD11 of A30 resembles waveform 105 Again if this waveform does not appear go to the CCD Clock Driver troubleshooting 3 Examine pin 18 of A30 The waveform here should have an offset of 7 5 V which is shown at center screen on waveform 106 for diagram 14 If this waveform does not look right check the components on A30 for failures 4 Compare pin 1 of A30 to waveform 107 ...

Page 295: ...nates due to acquisition count and the test result is set to FAIL otherwise it passes The SPECIAL menu choices under Extended Functions provide a diagnostic switch to divide the signal acquisition path CAL PATH ON OFF turns on or off the calibration signal path to the Peak Detectors It is a useful diagnostics device in the event that large offset errors have driven the display off screen Switching...

Page 296: ...SELF CAL twice from a COLD START to assure an iterative solution of the calibration constants Troubleshooting Procedure 1 If SELF CAL fails the calibration constants will most likely not be close enough to an operationally good value for the portions of the Preamp that work to function properly Do a COLD START to replace the stored calibration constants with nominal values NOTE After a COLD START ...

Page 297: ... 5 The Preamplifier operating mode is set by a serial data word sent from the System mP The CD input pin 22 is the serial data input A TTL level logic swing should be present on this line when ever the Attenuators Preamps or A B Trigger Generator operating modes are being set up If there are no FAIL flags under these major test categories the CD circuitry is most likely function ing properly The C...

Page 298: ...to determine whether the offset error is prior to the Peak Detectors or after Troubleshoot in the appropriate direction to locate the source of the offset error 4 Check that the bypassing components in series with the power supplies are not open Also check that the dc bias voltages at the Preamp are approximately the levels indicated on the schematic diagram in the service manual 5 If the Preamp h...

Page 299: ... trace shift between non invert and INVERT within limits for calibration or diagnostics This is done until balance is within specification or until the maximum number of acquisitions has been reached If the result is within specification prior to acquisition abort the test result is set to PASS otherwise it is set to FAIL Balance Test Limits Range 50 mV 20 mV 10 mV 5 mV 2 mV Cal limit 1 2 DL 1 2 D...

Page 300: ...not ok troubleshoot the DAC system 2 Check that the bypassing components in series with the power supplies are not open Also check that the dc bias voltages at the Preamp are approximately the levels indicated on the schematic diagram in the service manual 3 If the Preamp hybrid itself is suspected of being defective and the other channel is fully functional swap Preamp hybrids between channels to...

Page 301: ...ON and OFF Several clicks will normally be heard when switching in and out of GND Coupling 3 If one and only one audible click was heard for each of the first four front panel changes above then the circuitry that drives the four mag latch relays in each attenuator is functioning properly by switching the individual relays to the opposite latched position the audible dick 4 Connect the output of a...

Page 302: ...ure of the scope the test may not be able to converge to a solution Triggers have constants for offset and gain The value of Level DAC output that caused the trigger to change state is assumed to be the upper hysteresis level in plus slope and the lower hysteresis level in negative slope NOTE TRIGGER MODE is set to A and B to program ATG output to be the AND of A and B triggers Thus ATG may be tes...

Page 303: ...b WR ACQSEL A0 A3 and GAD0 GAD7 are the digital control and data lines These signals are tested by test number 2510 of the Extended Diagnostics and if a PASS flag is present are assumed to be correct Otherwise refer to that diagnostics troubleshooting procedure for a failure of 2510 4 The ATG path from Trigger Logic Array U370 to data bus bit DO is also a common path The AND logic function of the ...

Page 304: ...ggers or from an external source EXT1 EXT2 external triggers This is done by grounding the attenuator or by provid ing a short at the EXT TRIG inputs The trigger level DAC is moved in two binary searches to determine where the upper and lower hys teresis levels are while holding the other trigger level in such a state that should be triggered The constant is then set to the hysteresis level that r...

Page 305: ...alue is stored if the test fails on the assumption that the external setup may be faulty The test s that failed will be marked FAIL in the Extended Diagnostic menu Troubleshooting Procedure 1 Run test 9200 in CONTINUOUS mode 2 Starting with the signal path for ATG at pin 2 of A13U761 schematic diagram 13 work back wards toward the trigger signal source using a test oscilloscope to check that the p...

Page 306: ...ical shock 2 Check that PWRUP signal on U640 pin 2 processor board is HI and that the RESET signal on U640 pin 37 is HI after the power on If not troubleshoot the Power Up schematic diagram 23 and Power Up Reset circuitry schematic diagram 1 PROCESSOR System Clocks schematic diagram 7 CLOCKS 1 Check System xP A12U640 pin 38 schematic diagram 1 for 8 MHz If not there check System Clocks for the def...

Page 307: ...he System y P Kernel Test to verify the ability of the System y P to function System yP A12U640 schematic diagram 1 Kernel Test 1 With the power off move jumper J126 from pins 1 and 2 to pins 2 and 3 of PI 26 This disables the System y P Data Bus Driver and allows the data bus lines to be pulled up and down to a single byte instruction The instruction CLRB continually fetches and executes the CLRB...

Page 308: ... AF period and set the Trigger Slope so that AF is shown LO during the first half of the display While AF is LO addresses from OOOOh to 7FFFh are being executed while HI addresses from 8000h to FFFFh are executed 2 Move jumper J127 shown on schematic diagram 2 to connect pins 2 and 4 This causes the BUSTAKE condition so that the System nP has access to the Waveform nP memory space In this mode mos...

Page 309: ...on the System Bus or the Waveform P bus Use the BUS ISO LATE mode to assist in checking for a fault location BUS ISOLATE MODE 1 Move jumper J127 to the BUS ISOLATE position pins 2 and 4 connected This electrically disconnects the Waveform nP bus from the System fiP bus to isolate the different parts of the processing system from each other 2 Recheck the faulty data bus line to determine if it is s...

Page 310: ...6FFF NVRAM 7000 77FF 11 SYSRAM 7800 7FFF I I I I I I I I i I ROMO X R0M1 8 0 0 0 4 C O O O H BFFF FFFF SYSTEM n P AF L WF P 0000 7FFFI 8000 FFFF I I I ADDRESSES ADDRESSES ACTIVITY DURING WAVEFORM it P ADDRESSES Figure 6 10 System nP data bit D7 in the Bus Isolate mode 6 102 ...

Page 311: ...nes with the exception of the top five WAA through WAE increment with the periods shown in the following tables WAA through WAE will be fixed random values because page switching of the memory is not done and is not set to any known state in the Kernel test Waveform mP Instruction Bus Address Lines Waveform nP Data Bus Address Lines Signal Location Period IA9 TP580 409 6 ns IA8 U490 22 204 8 ixs I...

Page 312: ...ailure Troubleshooting Procedure 1 Check A12U830 pin 3 schematic diagram 1 tor two negative strobes about 10 5 ms apart View ing scope Sec Div at 2 ns trigger on negative slope of the signal If not present replace U830 NOTE The GPIBSEL signal also selects the Video Option registers if communication via the GPIB interface is ok then the select signals to Data Bus Buffer U532 schematic diagram 20 an...

Page 313: ...ions If not there troubleshoot the Holdoff circuit schematic diagram 13 as indicated in Table 6 6 in HOLDOFF PROBLEMS 3 If the ATHO signal is ok check U424C pin 6 for an inverted ATHO signal if not present replace U424 4 Check that U541B pin 6 has a positive pulse coincident with ATHO transitions If not replace U541 5 Check that U524A pin 5 has a positive pulse coincident with the ATHO transitions...

Page 314: ...9 of U610 with the correct TVRC signal applied troubleshoot the AGC amplifier and Sync Tip Clamp and associated feedback circuitry 6 Set Input Coupling to GND and check that U510 pin 6 is within 1 V of ground level If not trouble shoot U510 and associated circuitry PHASE LOCKED LOOP PROBLEM 1 Set the Trigger CPLG to VIDEO Trigger SOURCE to CH 2 Trigger SLOPE to neg sync A VIDEO COUPLING to FIELD1 ...

Page 315: ...o transition replace U424 TV CLAMP PROBLEM N O T E The Video O ption m ust have a com posite sync o r com posite video signal source applied fo r the C hannel 2 D isplay C lam p to function properly C lam ping action is unpredictable if an incorrect signal is applied The C L A M P circuit rem ains on even if V ID E O C O U P L IN G is n o t selected an d m ay b e used to d am p a C hannel 2 displa...

Page 316: ...troubleshoot U514 U410B U410E and the CH 2 INV signal should be HI with CH 2 INVERT ON 11 Check U710D pin 14 for approximately 0 V with CLAMP OFF and approximately 1 3 0 mV with CLAMP ON If not correct replace U710 Check that the Source of Q710 follows pin 14 of U710D for CLAMP ON and CLAMP OFF If not troubleshoot Q710 U710A and associated components FRONT PANEL SETTINGS FOR INIT PANEL Table 6 8 l...

Page 317: ...CT DISP READOUT Intensity 50 DISP Intensity 40 GRAT Ilium 0 INTENS Level 80 VECTORS ON MEASURE Controls MARK OFF DISPLAY OFF WINDOW OFF METHOD MIN MAX LEVEL units LEVEL settings PROXIMAL 10 0 4 volts MESIAL 50 1 3 volts MESIAL2 50 1 3 volts DISTAL 90 2 4 volts TARGET CH 1 STORAGE Mode Controls STORAGE Mode SAVE ACQUIRE Mode NORMAL REPET OFF AVG Number 2 ENVELOPE Number 1 SAVE ON A OFF REF1 through...

Page 318: ...e 6 8 cont VIDEO OPTION Setup SET TV WORD RECOGNIZER SET WORD Interlaced Coupling FIELD1 Word Match Don t care Noninterlaced Coupling FIELD1 all x TV SYNC minus RADIX HEX CLAMP OFF CLOCK ASYNC Line Count 525 Line Start PREFLD 6 110 ...

Page 319: ...1R it is shipped in a configuration that permits easy installation into a 19 inch wide equipment rack An optional rackmounting kit may be ordered to convert the standard 2440 to a rackmounted instrument Installation instructions for rackmounting are provided in the docu mentation supplied with the rackmounting kit and the 1R Option The rear support kit also is supplied for use when rack mounting t...

Page 320: ...OPTION RACKMOUNTING ACCESSORIES Option 05 provides an aid in examining composite video signals With the Video Option installed all basic instru ment functions remain the same Changes to any of the control menus by the installation of Option 05 are detailed in the description of the affected menus in Section 3 of the Operators Manual Controls Connectors and Indicators Features of this option includ...

Page 321: ...34 of Subassembly 2 of Assembly 23 The circuit component s number appears on the diagrams and circuit board illustrations Each diagram and circuit board illustration is clearly marked with the assembly number Assembly numbers are also marked on the me chanical exploded views located in the mechanical parts list The component number is obtained by adding the assembly number prefix to the circuit nu...

Page 322: ......

Page 323: ...3 WIMA THE INTER TECHNICAL GROUP IND ONE BRIDGE ST PO BOX23 IRVINGTON NY 10533 TK2073 TOCOS AMERICA INC 565 W GULF ROAD ARUNGTON HEIGHTS IL 60005 TK2292 SENSOR AND SWITCHES INC DIV OF DESCO CORP OF COLUMBUS OHIO PO BOX 3297 LEXINGTON OH 44904 TK2319 COLLMER 14368 PROTON RD DALLAS TX 75244 TK2425 CHUNG HING INDUSTRY CO LTD PHONE 5 564114 8 FAX 852 5 713679 1ST FLOOR SUNRIDGE IND BLDG 10 HONG MAN ST...

Page 324: ...STORS BURLINGTON 2850 MT PLEASANT AVE BURLINGTON IA 52601 09922 BURNDYCORP RICHARDS AVE NORWALK CT 06852 1CH66 PHILIPS SEMICONDUCTORS 811 EARQUES AVENUE PO BOX 3409 SUNNYVALE CA 94088 3409 1W344 UNITED CHEMI CON INC 9801 W HIGGINS SUITE 430 ROSEMONT IL 60018 4704 11236 CTS CORP BERNE DIV THICK FILM PRODUCTS GROUP 406 PARR ROAD BERNE IN 46711 9506 11502 INTERNATIONAL RESISTIVE CO INC GREENWAY RD PO...

Page 325: ... BOX 883 MELBOURNE FL 32919 50101 FREQUENCY SOURCES INC SEMICONDUCTOR DIV SUB OF LORAL CORP 16 MAPLE RD CHELMSFORD MA 01824 3737 50139 ALLEN BRADLEY CO ELECTRONIC COMPONENTS 1414 ALLEN BRADLEY DR EL PASO TX 79936 50434 HEWLETT PACKARD CO OPTOELECTRONICS DIV 370 W TRIMBLE RD SAN JOSE CA 95131 1008 51406 MURATA ERIE NORTH AMERICA INC HEADQUARTERS AND GEORGIA OPERATIONS 2200 LAKE PARK DR SMYRNA GA 30...

Page 326: ... SHIZUKI CORP OGALLALA OPERATIONS DALE ELECTRONICS INC 31 FARINELLA DR 3901 N 1ST ST 1109 MCKAY DR 1000 E BELL RD 2711 ROUTH 20 EAST 114 OLD STATE RD PO BOX 14460 HWY 20 W PO BOX 858 401 N BROAD ST 3005 SW 154TH TERRACE 3 88 N DUGAN ROAD PO BOX 890 14150 SW KARL BRAUN DR PO BOX 500 9220 SUNSET BLVD COUPLES DEPT C AND PORTER STS PO BOX47 301 WEST O ST 2064 12TH AVE PO BOX 609 City State Zip Code EA...

Page 327: ...902 0 4 B012403 B012656 CIRCUIT BD ASSYLV POWER SUPPLY 80009 670990204 A16 670 9902 0 5 B012657 BO13269 CIRCUIT BD ASSYLV POWER SUPPLY 80009 670990205 A16 670 9902 0 6 B013270 B013320 CIRCUIT BD ASSYLV POWER SUPPLY 80009 670990206 A16 670 9902 07 B013321 CIRCUIT BD ASSYLV POWER SUPPLY STANDARD ONLY 80009 670990207 A16 670 9902 01 B010100 B010107 CIRCUIT BD ASSYLV PWR SPLY 80009 670990201 A16 670 9...

Page 328: ...WER SUPPLY CIRCUITBD ASSYHV POWER SUPPLY 2440MONLY 80009 80009 670974803 670974804 A18 670 7280 00 CIRCUITBD ASSYSCALE ILLUM 80009 670728000 A30 6 71 0367 00 CIRCUITBD ASSYCCD OUT 80009 671036700 A31 6 71 0367 00 CIRCUITBD ASSYCCD OUT 80009 671036700 A32 6 7 1 0367 00 CIRCUITBD ASSYCCD OUT 80009 671036700 A33 671 0367 00 CIRCUITBD ASSYCCD OUT 80009 671036700 8 8 REVJUL 1993 Replaceable Electrical ...

Page 329: ...P FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C112 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C120 28 1 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A10C122 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C140 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C141 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A1...

Page 330: ... 20 50V 04222 SA105C223MAA A10C257 281 0218 00 CAP VAR CERDI 1 5PF 2 2 5 100V 59660 513 011A1 5 A10C260 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A10C263 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C264 283 0203 00 CAP FXD CERDI 0 47UF 20 50V 04222 SR305C474MAA A10C265 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C272 281 0909 00 CAP F...

Page 331: ...MLC 1 5 0 P F 1 0 100V 2440M 04222 SA101A151KAA A10C422 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A10C423 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A10C430 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A10C431 281 0093 00 CARVAR CER DI 5 5 18PF 350V 33095 53 717 001 A5 5 A10C432 28 1 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 0422...

Page 332: ... o o o o 2 2 2 2 P P P P O b b b o b 8 8 8 8 8 i o r o r o r o n c c c c c io ro ro ro ro ro i i H H H 5 3 0 o 5 G O G O G O 5 2 7 C O C O C O ro ro ro 4 4 4 8 8 8 2 2 2 o 8 ro ro c o s s ro ro o 0 ro io io S Is io P 2 2 W 5 5 5 o o o 8 8 8 ro ro ro C O C O g g w 2 2 2 2 2 ro ro ro ro ro ro ro ro io ro ro ro ro io ro C O C O 0 C O C O o o 8 8 o 8 ro ro ro ro io ro ro io ro ro C O G O G G9 0 s S s ...

Page 333: ... 1 0 ro ro ro ro 1 0 ro 1 0 ro ro ro 1 0 8 8 0 0 0 3 g oo 1 1 1 8 2 1 1 05 0 0 1 1 0 0 1 0 0 0 0 1 1 0 9 0 9 0 9 4 3 0 9 4 3 0 9 0 9 0 9 4 3 0 9 0 9 0 9 0 9 0 2 0 3 0 9 0 9 0 9 0 9 0 7 9 8 n 1 0 2 0 2 1 8 0 0 0 2 0 0 8 8 1 1 8 8 8 8 8 z o C O 3 3 3 O 3 7 3 3 z 3 O 3 S f a c o a b 8 3 0 o o s s 1i g m m o i J O s o C C S m m r ro ro o S b 0 s b ro ro fv5 5 510 C m ro 5 o n o 0 s 1 o o 0 8 ro C 1 0 ...

Page 334: ...LASTIC 560PF 2 5 100V TK1913 FKP2 560 PF 2 5 A10C664 285 1362 00 CAP FXD PLASTIC 560PF 2 5 100V TK1913 FKP2 560PF2 5 A10C685 281 0 9 0 9 0 0 CARFXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A10C686 290 0943 02 CAP FXD ELCTLT 47UF 20 25V 1W344 SME25VB47RM5X11 A10C690 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A10C701 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA...

Page 335: ...A10C813 281 0 7 6 3 0 0 CAP FXD CERAMIC MLC 47PF 10 100V 04222 SA102A470KAA A10C817 281 0 9 0 9 0 0 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A10C820 285 1301 01 CAP FXD MTLZD 0 47UF 10 50V TK1913 MKS 2 47 50 A10C821 285 1301 01 CAP FXD MTLZD 0 47UF 10 50V TK1913 MKS 2 47 50 A10C822 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A10C823 281 0 9 0 9 0 0 CAP FXD CERAMI...

Page 336: ... DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR225 152 0141 0 2 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR226 152 0141 0 2 DIODE SIG ULTRA FAST 40V 150NIA 4NS 2PF 27014 FDH9427 A10CR227 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR228 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR270 152 0141 02 DIODE SIG ULTRA FAST 40V 1...

Page 337: ...AST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR614 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR620 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR621 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR622 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR701 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FD...

Page 338: ...NAL PIN PRESSFIT PCB MALE STR QUANTITY OF 12 22526 48283 018 A10J191 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 3 22526 48283 018 A10J192 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 12 22526 48283 018 A10J2001 131 0679 02 CONN RF RCPT BNC 50 OHM FEMALE STR TK0I0 BNC340 BR 1 A10J2002 A10J2004 A10J2005 131 0679 02 CONN RF RCPT BNC 50 OHM FEMALE STR PART OF A10AT400 PAR...

Page 339: ... FIXED 93NH 15 0JR03 108 0777 00 A10LR452 108 0777 00 COIL RF FIXED 93NH 15 0JR03 108 0777 00 A10LR453 108 0777 00 COIL RF FIXED 93NH 15 0JR03 108 0777 00 A10LR454 108 0777 00 C0IL RF FIXED 93NH 15 0JR03 108 0777 00 A10LR455 108 0777 00 COIL RF FIXED 93NH 15 0JR03 108 0777 00 A10LR456 108 0777 00 COIL RF FIXED 93NH 15 0JR03 108 0777 00 A10LR457 108 0777 00 COIL RF FIXED 93NH 15 0JR03 108 0777 00 A...

Page 340: ...TRANSISTOR SIG BIPOLAR NPN 25V 30MA 1 0GHZ 04713 SPS 8811 A10Q491 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A10Q492 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A10Q493 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A10Q494 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A10Q495 151 0192 05 TRANSISTOR SIG 8IPOLAR NPN 25V 1 OOMA 0471...

Page 341: ... BIPOLAR PNP 25V 1OOMA 04713 MPS6523RLRP A10Q970 151 0190 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 04713 2N3904 A10Q980 151 0190 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 04713 2N3904 A10R102 321 0657 07 RES FXD FILM 60 0HM 0 1 0 125W TC T9 57668 RB14BZE60E A10R110 321 1700 04 RES FXD FILM 10 44K OHM 0 1 0 125W TC T2 19701 5033RC10K440B A10R111 315 0301 0 0 RES FXD FILM 300 OHM 5 0 25W TK1727 SFR25 2...

Page 342: ...10R188 307 0546 00 RES NTWK FXD FI 5 75OHM 5 0 15W 11236 750 61 R75 OR 7 A10R201 315 0101 00 RES FXD FILM 100 OHM 5 0 25W TK1727 SFR25 2322 181 A10R202 315 0272 00 RES FXD FILM 2 7K OHM 5 0 25W TK1727 SFR25 2322 181 A10R210 321 1700 04 RES FXD FILM 10 44K OHM 0 1 0 125W TC T2 19701 5033RC10K440B A10R211 315 0101 00 RES FXD FILM 100 OHM 5 0 25W TK1727 SFR25 2322 181 A10R215 321 0054 00 RES FXD FILM...

Page 343: ...A10R271 315 0152 00 RES FXD FILM 1 5K OHM 5 0 25W TK1727 SFR25 2322 181 A10R273 315 0102 00 RES FXD FILM IK OHM 5 0 25W TK1727 SFR25 2322 181 A10R274 315 0102 00 RES FXD FILM 1K OHM 5 0 25W TK1727 SFR25 2322 181 A10R275 315 0560 00 RES FXD FILM 56 OHM 5 0 25W TK1727 SFR25 2322 181 A10R276 313 1102 00 RES FXD FILM IK OHM 5 0 2W 91637 CCF50 2 10000J A10R278 315 0750 00 RES FXD FILM 75 OHM 5 0 25W TK...

Page 344: ... RLM 3K OHM 5 0 25W TK1727 SFR25 2322 181 A10R356 311 2231 0 0 B010100 B010249 RES VAR TRMR CERMET 1 K OHM 20 0 5W TK2073 GF06UT2 102 M L A10R356 311 2234 00 B010250 RES VAR TRMR CERMET 5K OHM 20 0 5W TK2073 GF06UT2 502 M L A10R357 311 2234 00 RES VAR TRMR CERMET 5K OHM 20 0 5W TK2073 GF06UT2 502 M L A10R358 311 2234 00 RES VAR TRMR CERMET 5K OHM 20 0 5W TK2073 GF06UT2 502 M L A10R359 311 2234 00 ...

Page 345: ...R399 315 0101 0 0 RES FXD FILM 100 OHM 5 0 25W TK1727 SFR25 2322 181 A10R410 311 2229 00 RES VAR NONWW TRMR 250 OHM 20 0 5W TK2073 GF06UT2 251 ML A10R420 315 0121 0 0 RES FXD FILM 120 OHM 5 0 25W TK1727 SFR25 2322 181 A10R425 315 0101 00 RES FXD FILM 100 OHM 5 0 25W TK1727 SFR25 2322 181 A10R430 321 02 52 00 RES FXD FILM 4 12KOHM 1 0 125W TC T0 19701 5043ED4K120F A10R431 311 2234 00 RES VAR TRMR C...

Page 346: ...315 0102 00 RES FXD FILM 1K OHM 5 0 25W TK1727 SFR25 2322 181 A10R482 322 3105 00 RES FXD METALFILM 121 OHM 1 0 2W 91637 CCF501G121ROF A10R483 315 0202 00 RES FXD FILM 2K OHM 5 0 25W TK1727 SFR25 2322 181 A10R484 315 0750 00 RES FXD FILM 75 OHM 5 0 25W TK1727 SFR25 2322 181 A10R485 315 0750 00 RES FXD FILM 75 OHM 5 0 25W TK1727 SFR25 2322 181 A10R486 315 0180 00 RES FXD FILM 18 OHM 5 0 25W TK1727 ...

Page 347: ...A10R545 321 02 89 00 RES FXD FILM 10 0KOHM 1 0 125W TC T0 19701 5O43ED1OK0OF A10R546 315 0472 00 RES FXD FILM 4 7K OHM 5 0 25W TK1727 SFR25 2322 181 A10R547 315 0150 00 RES FXD FILM 15 OHM 5 0 25W TK1727 SFR25 2322 181 A10R550 315 0681 00 RES FXD FILM 680 OHM 5 0 25W TK1727 SFR25 2322 181 A10R551 315 0151 00 RES FXD FILM 150 OHM 5 0 25W TK1727 SFR25 2322 181 A10R555 315 0102 00 RES FXD FILM 1K OHM...

Page 348: ... FILM 10K OHM 5 0 25W TK1727 SFR25 2322 181 A10R622 307 0108 00 RES FXD CMPSN 6 8 OHM 5 0 25W 50139 CB68G5 AlOR623 315 0471 0 0 RES FXD FILM 470 OHM 5 0 25W TK1727 SFR25 2322 181 A10R624 315 0561 0 0 RES FXD FILM 560 OHM 5 0 25W TK1727 SFR25 2322 181 A10R625 315 0391 0 0 RES FXD FILM 390 OHM 5 0 25W TK1727 SFR25 2322 181 A10R626 321 0264 00 RES FXD FILM 5 49K OHM 1 0 125W TC TO 19701 5043ED5K490F ...

Page 349: ... A10R667 313 1202 00 RES FXD FILM 2K OHM 5 0 2W 91637 CCF50 2 20000J A10R668 313 1102 00 RES FXD FILM 1 K OHM 5 0 2W 91637 CCF50 2 10000J A10R669 313 1202 0 0 RES FXD FILM 2K OHM 5 0 2W 91637 CCF50 2 20000J A10R670 313 1750 00 RES FXD FILM 75 OHM 5 0 2W 91637 CCF50 2 75R00J A10R671 313 1102 00 RES FXD FILM 1K OHM 5 0 2W 91637 CCF50 2 10000J A10R672 313 1202 00 RES FXD FILM 2K OHM 5 0 2W 91637 CCF5...

Page 350: ...LM 11 8K OHM 1 0 125W TC T0 19701 5043ED11K80F A10R762 321 0193 00 B011392 RES FXD FILM IK OHM 1 0 125W TC T0 TK1727 MR25 2322 151 1 A10R763 321 0210 00 RES FXD FILM 1 50K OHM 1 0 125W TC T0 19701 5033ED1K50F A10R764 321 02 82 00 B010100 B011391 RES FXD FILM 8 45K OHM 1 0 125W TC T0 19701 5043ED8K450F A10R764 321 0277 00 B011392 RES FXD FILM 7 50K OHM 1 0 125W TC T0 19701 5043ED7K500F A10R766 313 ...

Page 351: ... OHM 5 0 25W TK1727 SFR25 2322 181 A10R824 315 0912 00 RES FXD FILM 9 1K OHM 5 0 25W TK1727 SFR25 2322 181 A10R825 315 0103 00 RES FXD FILM 10K OHM 5 0 25W TK1727 SFR25 2322 181 A10R828 315 0103 00 RES FXD FILM 10K OHM 5 0 25W TK1727 SFR25 2322 181 A10R830 321 02 89 00 RES FXD FILM 10 0K OHM 1 0 125W TC T0 19701 5043ED10KOOF A10R831 321 02 89 00 RES FXD FILM 10 0K OHM 1 0 125W TC T0 19701 5043ED10...

Page 352: ... OHM 1 0 2W 91637 CCF50G10001F A10R954 322 3289 00 RES FXD METAL RLM 10K OHM 1 0 2W 91637 CCF50G10001F A10R955 322 3311 00 RES FXD FILM 16 9KOHM 1 0 2W TC T0 56845 CCF 50 2 1692F A10R956 322 3289 00 RES FXD METAL FILM 10K OHM 1 0 2W 91637 CCF50G10001F A10R957 322 3311 00 RES FXD FILM 16 9K OHM 1 0 2W TC TO 56845 CCF 50 2 1692F A10R1001 315 0240 00 RES FXD FILM 24 OHM 5 0 25W TK1727 SFR25 2322 181 ...

Page 353: ...C1458P A10U270 156 0651 00 1C DIGITALrLSTTL SHIFT REGISTER 01295 SN74LS164N A10U271 156 0469 00 IC DIGITAL LSTTL DEMUX DECODER 01295 SN74LS138 A10U272 156 0874 02 1C DIGITAL LSTTL LATCH 04713 SN74LS259N A10U280 156 0383 00 1C DIGITAL LSTTL GATES 01295 SN74LS02N A10U320 165 2235 02 MICROCKT HYBRID ASSEMBLED LOW NOISE 80009 165223502 A10U340 MICROCKT HYBRID PK DETECTOR ASSY A10U350 B010100 B010999 M...

Page 354: ...72 00 IC UNEAR BIPOLAR OP AMP 01295 NE5532P A10U810 156 1191 01 IC LINEAR BIFET OP AMP 01295 TL072ACP A10U811 156 0513 03 IC MISC CMOS ANALOG MUX 04713 MCI4051 BCP A10U812 156 0048 00 IC LINEARiBIPOLAR TRANSISTOR ARRAY 04713 MC3346P A10U820 156 1200 01 IC LINEAR BIFET OP AMP 01295 TL074CN A10U821 156 0513 03 1C MISCiCMOS ANALOG MUX 04713 M CI4051BCP A10U830 156 0513 03 1C MISCiCMOS ANALOG MUX 0471...

Page 355: ...00 B011391 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A10XU100 136 0764 00 SOCKET HYBRID PCB STR 48 POS 0 05 CTR 00779 54973 1 A10XU150 136 0764 00 SOCKET HYBRID PCB STR 48 POS 0 05 CTR 00779 54973 1 A10XU320 136 0763 00 SKT PL IN ELEK 26 LINE CONTIMPD HYBRID 00779 54977 1 A10XU340 136 0764 00 SOCKET HYBRID PCB STR 48 POS 0 05 CTR 00779 54973 1 A10XU350 136 0764 00 SOCKET HYBRID PCB S...

Page 356: ...A105C223MAA A11C243 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C250 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C260 285 1342 00 CAP FXD PLASTIC FILM FOIL 220PF 5 100V TK1913 FKP2 220 PF 5 P A11C261 281 0909 00 CAP1 FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C264 285 1342 00 CAP FXD PLASTIC FILM FOIL 220PF 5 100V TK1913 FKP2 220 PF 5 P A...

Page 357: ...521 281 09 09 00 CAP FXD CERAM1C MLC 0 022UF 20 50V 04222 SAl 05C223MAA A11C522 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C523 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A11C531 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A11C532 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C540 281 0909 00 CAP FXD CERA...

Page 358: ...50V 04222 SA105C223MAA A11C712 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A11C720 281 0909 00 CARFXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C730 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A11C731 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A11C732 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A11C7...

Page 359: ...DH9427 A11CR284 152 0141 0 2 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A11CR671 152 0141 02 B010170 BO10504 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF STANDARD 27014 FDH9427 A11CR672 152 0141 02 B010170 B010504 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF STANDARD 27014 FDH9427 A11J100 131 3182 00 CONN HDR PCB MALE RTANG 2 X 25 0 1 CTR 53387 2550 5002UB A11J117 131 0589 00 TERMINAL PIN PRESSFIT P...

Page 360: ...00 RES FXD FILM 5K OHM 1 0 125W TC T0 19701 5033RD5K000F A11R192 321 0165 00 RES FXD FILM 511 OHM 1 0 125W TC T0 TK1727 MR25 2322 151 5 A11R193 315 0512 00 RES FXD FILM 5 1 K OHM 5 0 25W TK1727 SFR25 2322 181 A11R194 321 0001 0 0 RES FXD FILM 10 OHM 1 0 125W TC T0 91637 CMF55116G1OROOF A11R196 321 0001 0 0 RES FXD FILM 10OHM 1 0 125W TC T0 91637 CMF55116G10R00F A11R199 321 0193 00 RES FXD FILM 1K ...

Page 361: ...FILM 3 32K OHM 1 0 125W TC T0 19701 5033ED3K32F A11R481 321 0251 0 0 RES FXD FILM 4 02K OHM 1 0 125W TC T0 19701 5043ED4K020F A11R482 321 0275 00 RES FXD FILM 7 15K OHM 1 0 125W TC T0 19701 5043ED7K150F A11R483 321 02 72 00 RES FXD RLM 6 65K OHM 1 0 125W TC T0 TK1727 MR25 2322 151 6 A11R484 321 0326 00 RES FXD FILM 24 3K OHM 1 0 125W TC T0 TK1727 2322 151 24K3 A11R435 321 0300 00 RES FXD FILM 13 0...

Page 362: ...10284 RES FXD FILM 107 OHM 1 0 125W TC T0 07716 CEAD107R0F A11R690 321 0101 00 B010284 RES FXD FILM 110 OHM 1 0 125W TC T0 TEST SELECTABLE TK1727 MR25 2322 151 1 A11R713 315 0560 00 RES FXD FILM 56 OHM 5 0 25W TK1727 SFR25 2322 181 A11R715 315 0560 00 RES FXD FILM 56 OHM 5 0 25W TK1727 SFR25 2322 181 A11R716 315 0560 00 RES FXD FILM 56 OHM 5 0 25W TK1727 SFR25 2322 181 A11R720 307 0446 00 RES NTWK...

Page 363: ...US CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A11TP680 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A11TP700 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A11TP710 131 05 66 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A11U130 156 0852 00 IC DIGITAL LSTTL GATES NONINV HEX BUS 01295 SN74LS367N A11U140 156 0956 00 IC DIGITAL LSTTL B...

Page 364: ...95 TL074CN A11U392 156 1200 01 1C LINEARiBIFET OP AMP 01295 TL074CN A11U400 156 1714 00 IC DIGITAL FTTL COUNTER SYNCH 4 B IT 1CH66 N74F191N A11U401 156 1714 00 1C DIGITAL FTTL COUNTER SYNCH 4 B IT 1CH66 N74F191N A11U410 156 0910 00 IC DIGITAL LSTTL COUNTER DUAL 4 B IT DECADE 01295 SN74LS390N A11U411 156 0386 00 1C DIGITALiLSTTL GATES TRIPLE 3 INPUT 01295 SN74LS10N A11U412 156 0382 00 IC DIGITAL LS...

Page 365: ...0 IC MEMORY NMOS SRAM 2K X 8 45NS 0JR04 TMM2018D 45 A11U601 156 0982 03 IC DIGITAL LSTTL FLIP FLOP 01295 SN74LS374N A11U610 156 1111 02 1C DIGITALrLSTTL TRANSCEIVER 01295 SN74LS245N A11U612 156 0118 00 IC DIGITAL STTL FLIP FLOP DUAL J K 01295 SN74S112AN A11U613 156 1962 00 IC DIGITAL FTTL BUFFER 04713 MC74F244N A11U615 156 0118 00 IC DIGITAL STTL FLIP FLOP DUAL J K 01295 SN74S112AN A11U620 156 170...

Page 366: ...F08N A11U732 156 1041 02 IC DIGITAL STTL COMPARATOR 4 BIT 01295 SN74S85N A11U740 156 1041 02 IC DIGITAL STTL COMPARATOR 4 BIT 01295 SN74S85N A11U750 156 0651 00 1C DIGITAL LSTTL SHIFT REGISTER 8 BIT SIPO 01295 SN74LS164N A11U780 156 2804 00 IC LINEAR BIPOLAR OP AMP 600V US SLEW 34371 HA1 2 5 3 9 5 A11U830 156 1961 00 1C DIGITAL FTTL SHIFT REGISTER 4 BIT 04713 MC74F194N A11U831 156 1961 00 1C DIGIT...

Page 367: ...PTION 05 ONLY 04222 SA105E104MAA A12C238 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl05C223MAA A12C276 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A12C308 281 0785 00 CAP FXD CERAMIC MLC 68PF 10 100V OPTION 05 ONLY 04222 SA102A680KAA A12C322 290 0183 00 CAP FXD TANT DRY 1UF 10 35V OPTION 05 ONLY 12954 AT513A105K035N A12C324 281 0861 00 CAP FXD CER DI 270PF 5 50V ...

Page 368: ...0 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A12C484 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A12C510 281 0814 00 CAP FXD CERAMIC MLC 100 PF 10 100V OPTION 05 ONLY TK1743 CGB101KEN A12C512 281 07 75 00 CAP FXD CER Dl 0 1UF 20 50V OPTION 05 ONLY 04222 SA105E104MAA A12C514 281 07 86 00 CAP FXD CERAMIC MLC 150PF 10 100V OPTION 05 ONLY 04222 SA101A151KAA A12C520 281...

Page 369: ...RY 2 7UF 10 20V OPTION 05 ONLY 24165 173D275X9020V A12C719 281 0775 00 CAP FXD CER DI 0 1UF 20 50V OPTION 05 ONLY 04222 SA105E104MAA A12C720 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A12C748 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A12C764 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A12C766 281 0909 00 CAP FXD CERAMIC MLC 0 022...

Page 370: ... 27014 FDH9427 A12CR329 152 0141 0 2 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF OPTION 05 ONLY 27014 FDH9427 A12CR332 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF OPTION 05 ONLY 27014 FDH9427 A12CR334 152 0141 0 2 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF OPTION 05 ONLY 27014 FDH9427 A12CR336 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF OPTION 05 ONLY 27014 FDH9427 A12CR422 152 0141 0 2 DIODE...

Page 371: ...ONN HDR PCB MALE RTANG 2 X 20 0 1 CTR 22526 69155 440R TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 8 OPTION 05 ONLY 22526 48283 018 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 4 22526 48283 018 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 15 22526 48283 018 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 3 22526 48283 018 131 0608 00 131 0608 00 131 0608 00 131 0 6 0 8 0 0 131 0608 00 TERMI...

Page 372: ... ONLY 04713 MPF4391 A12Q588 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A12Q592 151 0254 03 TRANSISTOR SIG BIPOLAR NPN 30V 500MA 0JR04 MPSA14 TPE2 A12Q594 151 01 90 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 04713 2N3904 A12Q596 151 01 90 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 04713 2N3904 A12Q612 151 01 88 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA OPTION 05 ONLY 04713 2N3906 A12Q710...

Page 373: ...K1727 SFR25 2322 181 RES FXD FILM 750 OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 RES FXD FILM 47K OHM 5 0 25W TK1727 SFR25 2322 181 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J 313 1153 00 315 0104 00 313 1102 00 315 0162 00 315 0474 00 RES FXD FILM 15K 5 0 2W 91637 CCF50 2 15001J RES FXD FILM 100K OHM 5 0 25W TK1727 SFR25 2322 181 RES FXD FILM 1K OHM 5 0 2W 91637 CCF50 2 10000J RES FXD ...

Page 374: ...322 181 313 1201 00 RES FXD FILM 200 OHM 5 0 2W 91637 CCF50 2 200ROJ 315 0102 00 RES FXD FILM 1K OHM 5 0 25W TK1727 SFR25 2322 181 315 0201 00 RES FXD FILM 200 OHM 5 0 25W TK1727 SFR25 2322 181 313 1103 00 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J 307 0104 00 RES FXD CMPSN 3 3 OHM 5 0 25W OPTION 05 ONLY 19701 5043CX3R300J 315 0223 00 RES FXD FILM 22K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 ...

Page 375: ...25 315 0103 00 RES FXD FILM 10K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 A12R426 315 0203 00 RES FXD FILM 20K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 A12R427 315 0163 00 RES FXD FILM 16K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 A12R428 315 0334 00 RES FXD FILM 330K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 A12R429 315 0204 00 RES FXD FILM 200K OHM 5 0 25W OPTION 05 ...

Page 376: ... FILM IK OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 315 0102 00 RES FXD FILM 1K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 315 0102 00 RES FXD FILM 1 K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 315 0475 00 RES FXD FILM 4 7M OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 315 0103 00 RES FXD FILM 10K OHM 5 0 25W OPTION 05 ONLY TK1727 SFR25 2322 181 315 0103 00 RES FXD FILM 10K O...

Page 377: ...2W 91637 CCF50 2 10000J A12R792 313 1151 00 RES FXD FILM 150 OHM 5 0 2W 91637 CCF50 2 150R0J A12R794 313 1151 00 RES FXD FILM 150 OHM 5 0 2W 91637 CCF50 2 150R0J A12R796 313 1151 0 0 RES FXD FILM 150 OHM 5 0 2W 91637 CCF50 2 1 50R0J A12R800 313 1561 00 B010100 B013314 RES FXD FILM 560 OHM 5 0 2W 91637 CCF50 2 560R0J A12R801 313 1392 00 B013315 RES FXD FILM 3 9K OHM 5 0 2W 91637 CCF50 2 39000J A12R...

Page 378: ...T PCB MALE STR 22526 48283 018 A12TP578 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A12TP580 131 0608 00 TERMINAL PIN PRESSF1T PCB MALE STR 22526 48283 018 A12TP664 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A12TP774 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A12TP820 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A12TP840 ...

Page 379: ...OS FLIP FLOP DUAL D TYPE 04713 MC14013BCP A12U430 156 0366 04 B011179 IC DIGITAL CMOS FLIP FLOP DUAL D TYPE OPTION 05 ONLY 34371 CD4013BE A12U432 156 0459 00 IC DIGITAL STTL GATES QUAD 2 INPUT 01295 SN74S08N A12U440 156 2274 00 IC MEMORY CMOS SRAM 8K X 8 120NS 62786 HM6264LP 12 A12U470 156 2380 00 1C ASIC HMOS CUSTOM WAVEFORM PROCESSOR 66302 VF4101RC CC0001 A12U480 160 4946 00 B010100 B010662 MICR...

Page 380: ...LY 04713 MC3346P A12U612 156 1349 00 IC UNEAR BIPOLAR AMPUFIER DUAL OPTION 05 ONLY 34371 CA3054 98 A12U624 156 1414 00 IC DIGITAL LSTTL TRANSCEIVER 01295 SN75160BN A12U630 156 1444 01 IC PROCESSOR NMOS CONTROLLER GPIB ADAPTER 01295 TMS9914A A12U632 156 0956 00 IC DIGITAL LSTTL BUFFER DRIVER 01295 SN74LS244N3 A12U640 156 1494 01 IC PROCESSOR NMOS MICROPROCESSOR 04713 MC68B09P A12U650 156 1111 02 IC...

Page 381: ...U682 160 4943 03 MICROCKT DGTL 65536 X 8 EPROM PRGM 2440M 80009 160494303 A12U690 160 4944 00 B010100 B010197 MICROCKT DGTL 65536 X 8 EPROM PRGM 80009 160494400 A12U690 160 4944 01 B010198 B010662 MICROCKT DGTL 65536 X 8 EPROM PRGM 80009 160494401 A12U690 160 4944 03 B010663 B010779 MICROCKT DGTL 65536 X 8 EPROM PRGM 80009 160494403 A12U690 160 4944 04 B010780 B011820 MICROCKT DGTL 65536 X 8 EPROM...

Page 382: ... 8 EPROM PRGM 80009 160584400 A12U692 160 5844 01 B010198 B010662 MICROCKT DGTL 65536 X 8 EPROM PRGM 80009 160584401 A12U692 160 5844 02 B010663 B010779 MICROCKT DGTL 65536 X 8 EPROM PRGM 80009 160584402 A12U692 160 5844 04 B010780 B011820 MICROCKT DGTL 65536 X 8 EPROM PRGM 80009 160584404 A12U692 160 5844 05 B011821 B012859 MlCROCKT DGTL 65536 X 8 EPROM 80009 160584405 A12U692 160 5844 06 B012860...

Page 383: ... SZ11738RL A12VR717 152 0278 00 DIODE ZENER 3V 5 0 4W 04713 1N4372ARL A12VR816 152 0175 00 DIODE ZENER 5 6V 5 0 4W OPTION 05 ONLY 04713 SZG35008 A12W123 175 9353 01 CA ASSY SP COAXIAL RFR2 50 OHM COAX 15 OL OPTION 05 ONLY 0J7N9 ORDER BY DESC A12W130 175 9025 00 CA ASSY SP RIBBON IDC 50 28 AWG 1 7 L 53387 ORDER BY DESC A12W800 176 0121 00 B013315 WIRE ELECTRICAL 20 AWG BARE 12 0 L TK1326 ORDER BY D...

Page 384: ... CAP FXD CERAMIC MLC 100 PF 10 100V TK1743 CGB101 KEN A13C831 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A13C832 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A13C833 281 07 57 00 CAP FXD CER DI 10PF 20 100V 04222 SAl02A1OOMAA A13C841 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SAl 05C223MAA A13C842 281 0909 00 CAP FXD CERAMIC MLC 0 022UF 20 50...

Page 385: ... TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A13Q773 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A13Q781 151 0190 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 04713 2N3904 A13Q782 151 1121 00 TRANSISTOR PWR MOS N CH 60V 0 5A 3 0 OHM 17856 VN0606L A13Q783 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 04713 2N3906 A13Q831 151 0190 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 04713 2...

Page 386: ...1J A13R812 313 1103 00 RES FXD RLM 1 OK OHM 5 0 2W 91637 CCF50 2 10001J A13R813 313 1103 00 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J A13R814 313 1103 00 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J A13R815 313 1101 00 RES FXD FILM 100 OHM 5 0 2W 91637 CCF50 2 100R0J A13R832 321 08 08 03 RES FXD FILM 300 OHM 0 25 0 125W TC T2 TK1727 MPR24 2322 141 A13R833 321 0282 0 0 RES FXD FILM 8 45K...

Page 387: ...13TP827 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A13TP871 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A13TP881 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 A13U700 160 2405 00 MICROCKT DGTL 8 BIT MICROCOMPUTER 04713 MC6805R3P A13U731 156 1149 01 1C LINEAR BIFET OP AMP 27014 LF351N A13U732 156 1722 00 IC DIGITAL FTTL GATE HEX INV 04713 MC74...

Page 388: ...R BIPOLAR COMPARATOR 01295 LM311P A13U872 156 0388 00 IC DIGITAL LSTTL FLIP FLOP DUAL D 01295 SN74LS74AN A13U881 156 1126 01 IC UNEAR BIPOLAR COMPARATOR 01295 LM311P A13VR841 152 0195 00 DIODE ZENER 5 1V 5 0 4W 04713 SZ11755RL A13W101 175 9023 00 CA ASSY SP ELEC 50 28 AWG 8 675 L 53387 ORDER BY DESC A13W110 175 9027 00 CA ASSY SP ELEC 40 28 AWG 1 4 L 53387 ORDER BY DESC A13W122 175 9024 00 CA ASSY...

Page 389: ...PF 27014 FDH9427 A14CR914 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A14CR916 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A14CR917 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A14CR918 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A14CR919 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A14CR921 152 ...

Page 390: ...CD AT 20MA 50434 HLMP 0503 OPT S A14DS904 150 1109 00 DIODE OPTO LED GRN 565NM 1 5MCD AT 20MA 50434 HLMP 0503 OPTS A14DS906 150 1109 00 DIODE OPTO LED GRN 565NM 1 5MCD AT 20MA 50434 HLMP 0503 OPT S A14R901 311 2181 00 RES VAR NONWW LINEAR 5KOHM 30 0 25W 32997 91Z2D Z45 EA002 A14R902 311 2181 00 RES VAR NONWW LINEAR 5K OHM 30 0 25W 32997 91Z2D Z45 EA002 A14R903 313 1103 00 RES FXD FILM 10K OHM 5 0 ...

Page 391: ...71590 2LL199NB021068 A14S923 260 2088 00 SWITCH PUSH 1 BTN 1 POLE TRIGGER 71590 2LL199NB021068 A14S924 260 2088 00 SWITCH PUSH 1 BTN 1 POLE TRIGGER 71590 2LL199NB021068 A14S927 260 2088 00 SWITCH PUSH 1 BTN 1 POLE TRIGGER 71590 2LL199NB021068 A14S928 260 2088 00 SWITCH PUSH 1 BTN 1 POLE TRIGGER 71590 2LL199NB021068 A14S929 260 2088 00 SWITCH PUSH 1 BTN 1 POLE TRIGGER 71590 2LL199NB021068 A14S932 2...

Page 392: ...iption Mfr Code Mfr Part No A14U903 156 0469 00 IC DIGITALLSTTL DEMUX DECODER 01295 SN74LS138 A14U904 156 0625 00 1C DIGITAL CMOS SHIFT REGISTER 8 BiT PtSO 27014 MM74C165N A14W151 175 9022 00 CA ASSYSP ELEC 26 28 AWG 18 95 L 53387 ORDER BY DESC 2440 Service REVJUL 1993 8 71 ...

Page 393: ...art No A15 175 9270 01 FLEX CKT ASSY GPIB POLYMIDE 80009 175927001 A15DS920 150 1161 00 LT EMITTING DIO YELLOW 50434 QLMP 1487 A15DS921 150 1161 0 0 LT EMITTING DIO YELLOW 50434 QLMP 1487 A15DS922 150 1161 0 0 LT EMITTING DIO YELLOW 50434 QLMP 1487 8 72 REVJUL 1993 Replaceable Electrical Parts ...

Page 394: ...4 290 0183 00 CAP FXD TANT DRY 1UF 10 35V 12954 AT513A105K035N A16C185 281 0812 00 CAP FXD CERAMIC MLC 1000PF 10 100V 04222 SA101C102KAA A16C195 281 08 12 00 CAP FXD CERAMIC MLC 1000PF 10 100V 04222 SA101C102KAA A16C197 281 08 12 00 CAP FXD CERAMIC MLC 1000PF 10 100V 04222 SA101C102KAA A16C219 285 1192 00 CAP FXD PPR Dl 0 0022 UF 20 250VAC TK0515 PME271Y422 A16C223 283 0078 00 CARFXD CER DI 0 001U...

Page 395: ... 0942 00 CAP FXD ELCTLT 10OUF 100 10 25V 0H1N5 CEUFM1E101 A16C664 290 1045 00 CAP FXD ELCTLT 4 7UF 10 35V 24165 173D475X9035W A16C675 281 0812 00 CAP FXD CERAMIC MLC 10OOPF 10 100V 04222 SA101C102KAA A16C683 281 0812 00 CAP FXD CERAMIC MLC 1000PF 10 100V 04222 SA101C102KAA A16C695 290 0942 00 CAP FXD ELCTLT 10OUF 100 1 0 25V 0H1N5 CEUFM1E101 A16C706 285 1222 00 CAP FXD PLASTIC 0 068UF 20 250V TK05...

Page 396: ...403 DIODE RECT FAST RCVRY 600V 3A 200NS STANDARD ONLY 12954 DR850701B A16CR511 152 0661 00 B010108 DIODE RECT FAST RCVRY 600V 3A 200NS 2440M ONLY 12954 DR850701B A16CR512 152 0661 00 B012403 DIODE RECT FAST RCVRY 600V 3A 200NS STANDARD ONLY 12954 DR850701B A16CR512 152 0661 0 0 B010108 DIODE RECT FAST RCVRY 600V 3A 200NS 2440M ONLY 12954 DR850701B A16CR513 152 0661 00 B012403 DIODE RECT FAST RCVRY...

Page 397: ...15RL A16CR750 152 0398 00 B010100 B010118 DIODE RECT FAST RCVRY 200V 1A 200NS 14936 1N4935GP A16CR750 152 0601 01 B010119 SEMICOND DVC DI RECTIFIER SI 150V 1 A 35NS 2440M ONLY 04713 MUR115RL A16CR751 152 0398 00 B010100 B013269 DIODE RECT FAST RCVRY 200V 1A 200NS 14936 1N4935GP A16CR751 152 0601 01 BO13270 SEMICOND DVC DI RECTIHER SI 150V 1A 35NS STANDARD ONLY 04713 MUR115RL A16CR751 152 0398 00 B...

Page 398: ... 00779 62409 1 A16Q148 151 0432 00 TRANSISTOR SIG BIPOLAR NPN 80V 500MA 04713 MPS8099 A16Q240 151 0301 00 TRANSISTOR SIG BIPOLAR PNP 60V 600MA 04713 2N2907A A16Q279 151 0798 00 TRANSISTOR PWR BIPOLAR PNP 50V 12A S4091 2SB826 Q OR R A16Q295 151 0341 00 TRANSISTOR SIG BIPOLAR NPN 45V 50MA 40MHZ 04713 MPS6520 A16Q365 151 0134 00 TRANSISTOR SIG BIPOLAR PNP 60V 600MA 04713 2N2905A A16Q421 151 1214 00 B...

Page 399: ...00 RES FXD FILM 75K OHM 5 0 25W TK1727 SFR25 2322 181 A16R186 321 0335 00 RES FXD FILM 30 lKOHM 1 0 125W TC T0 19701 5033RD30K12FB29 A16R187 321 0337 00 RES FXD FILM 31 6K OHM 1 0 125W TC T0 19701 5043ED31K60F A16R195 315 0474 00 RES FXD FILM 470K OHM 5 0 25W TK1727 SFR25 2322 181 A16R217 321 0289 00 RES FXD FILM 10 0KOHM 1 0 125W TC T0 19701 5043ED10K00F A16R223 305 0104 00 RES FXD CMPSN 100K OHM...

Page 400: ...XD FILM 3 24K OHM 1 0 125W TC T0 TK1727 2322 151 3K24 A16R435 321 02 42 00 RES FXD FILM 3 24KOHM 1 0 125W TC T0 TK1727 2322 151 3K24 A16R436 321 0385 00 RES FXD FILM 100K OHM 1 0 125W TC T0 19701 5043ED1OOKOF A16R465 321 0184 00 RES FXD RLM 806 OHM 1 0 125W TC T0 TK1727 MR25 23 22 151 8 A16R466 321 02 42 00 RES FXD FILM 3 24KOHM 1 0 125W TC T0 TK1727 2322 151 3K24 A16R473 308 0839 00 RES FXD 0 1 O...

Page 401: ...OJ A16R765 315 0100 00 RES FXD FILM 10 OHM 5 0 25W TK1727 SFR252322 182 A16R769 321 09 32 00 RES FXD FILM 2 5KOHM 1 0 125W TC T0 19701 5033RD2K500F A16R773 308 0839 00 RES FXD 0 1 OHM 5 1 0W 75042 SP 20 R1000J A16R774 315 0101 0 0 RES FXD FILM 100 OHM 5 0 25W TK1727 SFR25 2322 181 A16R775 321 0264 00 B010100 B010670 RES FXD FILM 5 49K OHM 1 0 125W TC T0 19701 5043ED5K490F A16R775 321 0816 00 B0106...

Page 402: ...M 1 0 125W TC T0 19701 5043ED10K00F A16R931 321 0193 00 RES FXD RLM 1K OHM 1 0 125W TC T0 TK1727 MR25 2322 151 1 A16R932 315 0474 00 RES FXD RLM 470K OHM 5 0 25W TK1727 SFR25 2322 181 A16R938 321 0242 00 RES FXD RLM 3 24KOHM 1 0 125W TC T0 TK1727 2322 151 3K24 A16R939 321 0289 00 RES FXD FILM 10 0K OHM 1 0 125W TC TO 19701 5043ED10K00F A16R975 321 0932 00 RES FXD FILM 2 5K OHM 1 0 125W TC TO 19701...

Page 403: ...25L 24546 OMA0207 A16W310 196 2827 00 LEAD ELECTRICAL 18 AWG 2 75 L 3 4 0J7N9 ORDER BY DESC A16W315 196 2827 00 LEAD ELECTRICAL 18 AWG 2 75 L 3 4 0J7N9 ORDER BY DESC A16W360 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A16W368 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A16W460 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA0207 A16W46...

Page 404: ...NLY 04222 SA105C223MAA A17C160 281 0865 00 CARFXD CER DI 1000PF 5 100V 04222 SA201A102JAA A17C165 281 0909 00 B012403 CAP FXD CERAMIC MLC 0 022UF 20 50V STANDARD ONLY 04222 SA105C223MAA A17C165 281 09 09 00 B010108 CAP FXD CERAMIC MLC 0 022UF 20 50V 2440M ONLY 04222 SA105C223MAA A17C179 281 09 09 00 CAP FXD CERAMIC MLC 0 022UF 20 50V 04222 SA105C223MAA A17C189 281 0909 00 CAP FXD CERAMIC MLC 0 022...

Page 405: ...5C224KAA A17C618 283 0187 05 CARFXD CER DI 0 047UF 10 500V 04222 SR307C473KAAAP1 A17C628 281 08 65 00 CAP FXD CER DI 1000PF 5 100V 04222 SA201A102JAA A17C629 283 0187 05 CAP FXD CER DI 0 047UF 10 500V 04222 SR307C473KAAAP1 A17C638 283 0187 05 CAP FXD CER DI 0 047UF 10 500V 04222 SR307C473KAAAP1 A17C639 281 0865 00 B012403 CARFXD CER DI 1000PF 5 100V 04222 SA201A102JAA A17C640 281 0 7 66 00 CARFXD ...

Page 406: ...131 0589 00 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 2 22526 48283 087 A17J173 131 0589 00 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 2 22526 48283 087 A17J174 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 9 22526 48283 018 A17J176 131 0608 00 TERMINAL PIN PRESSFIT PCB MALE STR QUANTITY OF 9 22526 48283 018 A17L605 108 0318 00 COIL RF FIXED 100UH 0JR03 ORDER BY DESC A17Q145 ...

Page 407: ...C T0 19701 5043ED66K50F A17R160 315 0202 00 B010100 B012402 RES FXD FILM 2K OHM 5 0 25W TK1727 SFR25 2322 181 A17R160 322 3222 00 BO12403 RES FXD METAL FILM 2K OHM 1 0 2W STANDARD ONLY 91637 CCF501G20000F A17R160 315 0202 00 B010100 B010107 RES FXD FILM 2K OHM 5 0 25W TK1727 SFR25 2322 181 A17R160 322 3222 00 B010108 RES FXD METAL FILM 2K 0HM 1 0 2W 2440M ONLY 91637 CCF501G20000F A17R161 313 1224 ...

Page 408: ...37 CCF501G22101F A17R218 322 3373 00 B012403 RES FXD F1LM 75K OHM 1 0 2W TC TO STANDARD ONLY 91637 CCF501G75001F A17R218 322 3373 00 B010108 RES FXD FILM 75KOHM 1 0 2W TC T0 2440M ONLY 91637 CCF501G75001F A17R219 322 3327 00 B012403 RES FXD FiLM 24 9K OHM 1 0 2W TC T0 STANDARD ONLY 91637 CCF50 2 G24901F A17R219 322 3327 00 B010108 RES FXD FILM 24 9KOHM 1 0 2W TC T0 2440M ONLY 91637 CCF50 2 G24901F...

Page 409: ... FXD FILM 100KOHM 0 1 0 125W TC T9 TK1727 MPR24 2322 141 A17R263 321 0693 07 B010119 RES FXD FILM 100KOHM 0 1 0 125W TC T9 SELECTALBE VALUE 2440M ONLY 80009 321069307 A17R278 321 0481 0 7 B010100 B012402 RES FXD FILM 1M OHM 0 1 0 125W TC T9 19701 5033RE1MOOOB A17R278 321 0481 0 4 B012403 RES FXD FILM 1M OHM 0 1 0 125W TC T2 STANDARD ONLY 19701 5033RC1M000B A17R278 321 0481 0 7 B010100 B010107 RES ...

Page 410: ...BR A17R443 315 0162 00 RES FXD FILM 1 6K OHM 5 0 25W TK1727 SFR25 2322 181 A17R500 313 1512 00 B010100 B012402 RES FXD FILM 5 1K OHM 5 0 2W 91637 CCF50 2 51000J A17R500 315 0512 00 B012403 RES FXD FILM 5 1K OHM 5 0 25W STANDARD ONLY TK1727 SFR25 2322 181 A17R500 313 1512 00 B010100 B010107 RES FXD FILM 5 1K OHM 5 0 2W 91637 CCF50 2 51000J A17R500 315 0512 00 B010108 RES FXD FILM 5 1K OHM 5 0 25W 2...

Page 411: ...7K OHM 1 0 2W TC TO 2440M ONLY 91637 CCF50 2F23702F A17R645 321 04 63 00 B010100 B012402 RES FXD RLM 649K OHM 1 0 125W 19701 5033YD649KOF A17R645 321 0481 0 4 B012403 RES FXD FILM 1M OHM 0 1 0 125W TC T2 STANDARD ONLY 19701 5033RC1M000B A17R645 321 04 63 00 B010100 B010107 RES FXD FILM 649K OHM 1 0 125W 19701 5033YD649KOF A17R645 321 0481 0 4 B010108 RES FXD FILMH M OHM 0 1 0 125W TC T2 2440M ONLY...

Page 412: ...N 1K OHM 5 0 25W 2440M ONLY 50139 CB1025 A17T525 120 1548 00 TRANSFORMER RF HIGH VOLTAGE 75498 120 1548 00 A17U168 156 0158 07 IC LINEAR BIPOLAR OP AMP 01295 MC1458P A17U227 155 0294 00 B010100 BO13860 MICROCKT LINEAR Z AXIS AMPLIFIER 80009 155029400 A17U227 155 0294 01 B013861 IC ASIC BIPOLAR Z AXIS TRIGGER 80009 155029401 A17VR209 152 0217 00 B012403 DIODE ZENER 8 2V 5 0 4W STANDARD ONLY 04713 S...

Page 413: ...T BD ASSY SCALE ILLUM 80009 670728000 A18DS100 150 0057 01 LAMP INCAND 5V 0 115A WIRE LD AGED SEL S3774 OL7153AS15TPL A18DS101 150 0057 01 LAMP INCAND 5V 0 115A WIRE LD AGED SEL S3774 OL7153AS15TPL A18DS102 150 0057 01 LAMP INCAND 5V 0 115A WIRE LD AGED SEL S3774 OL7153AS15TPL 8 92 REVJUL 1993 Replaceable Electrical Parts ...

Page 414: ...HZ 04713 MPS6520 A30R111 322 3193 00 RES FXD METAL FILM IK OHM 1 0 2W 91637 CCF501G1OOOOF A30R112 322 3175 00 RES FXD FILM 649 OHM 1 0 2W TC T0 91637 CCF50G649R0F A30R113 322 3145 00 RES FXD FILM 316OHM 1 0 2W TC T0 91637 CCF50G316R0F A30R114 322 3145 00 RES FXD FILM 316OHM 1 0 2W TC T0 91637 CCF50G316R0F A30R115 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W 91637 CCF501G1OOOOF A30R116 322 3193 00 ...

Page 415: ...MPS6520 A31R111 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W 91637 CCF501G1OOOOF A31R112 322 3175 00 RES FXD FILM 649 OHM 1 0 2W TC T0 91637 CCF50G649R0F A31R113 322 3145 00 RES FXD FILM 316OHM 1 0 2W TC T0 91637 CCF50G316R0F A31R114 322 3145 00 RES FXD FILM 316 OHM 1 0 2W TC T0 91637 CCF50G316R0F A31R115 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W 91637 CCF501G1OOOOF A31R116 322 3193 00 RES FXD ...

Page 416: ...NPN 45V 50MA 40MHZ 04713 MPS6520 A32R111 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W 91637 CCF501G10000F A32R112 322 3175 00 RES FXD FILM 649 OHM 1 0 2W TC T0 91637 CCF50G649R0F A32R113 322 3145 00 RES FXD RLM 316 OHM 1 0 2W TC T0 91637 CCF50G316R0F A32R114 322 3145 00 RES FXD FILM 316 OHM 1 0 2W TC T0 91637 CCF50G316R0F A32R115 322 3193 00 RES FXD METAL F1LM 1K OHM 1 0 2W 91637 CCF501G10000F A32...

Page 417: ...R0F A33R114 322 3145 00 RES FXD FILM 316OHM 1 0 2W TC T0 91637 CCF50G316R0F A33R115 322 3193 00 RES FXD METAL FILM 1 K OHM 1 0 2W 91637 CCF501G10000F A33R116 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W 91637 CCF501G10000F A33R117 313 1821 00 RES FXD FILM 820 OHM 5 0 2W 91637 CCF50 2 820R0J A33R118 313 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10RQ0J A33R120 322 3193 00 RES FXD METAL FILM 1...

Page 418: ...ALE STR TK1725 CONN RF JACK BNC 50 OHM FEMALE STR TK1725 CA ASSY SP RIBBON GPIB 24 28 AWG 7 0 L 0J7N9 CONN CIRC SLDR CUP 3 MALE 3 FEMALE 6 POS TK1312 CONN CIRC PNL LEMO 4 POS 2 MALE 2 FEMALE TK1312 OPTION 11 ONLY G35152BN G35152BN ORDER BY DESC ERA 1S 306 CLL ERA OS 304 CLL 131 07 71 00 119 1478 01 175 9356 00 301 04 74 00 311 1845 00 CONN CIRC PNL LEMO 4 POS 2 MALE 2 FEMALE OPTION 11 ONLY TK1312 ...

Page 419: ......

Page 420: ...it board illustration may only appear opposite the first diagram on which it was il lustrated the lookup table will list the diagram number of other diagrams that the circuitry of the circuit board appears on Function Block Title Internal Screwdriver Adjustment Cam Switch Closure Chart Dot indicates switch closure Etched Circuit Board Outlined i n Black Refer to Waveform Function Block Outline 1C ...

Page 421: ...rd This in fo rm a tio n is on th e back side of th e tabs Using th e C ircu it N um ber and grid coordinates locate th e com ponent on th e C ircuit Board Illu stra tio n In th e c irc u it board location illu stra tio n d eterm ine the lo cation of th e c irc u it board in th e in stru m e n t Find th e c irc u it board in th e in stru m e n t and com pare it w ith its illu s tra tio n in th e m...

Page 422: ...PLE AND HOLD INTENSITY Z AXIS CONT SIGS SPOTWOB ANLG CONT VOLTAGES HOREF 0 VERT CAL ANLG CONT VOLTAGES CH 2 GAINS CH 2 CENTERS JIT1 GAIN OUT11 OUT12 C14 CCD OUTPUT CH 1 GAINS 0UT13 2 OUT14 CH 1 GAINS GAIN CELL AMPL 6 CH 1 CENTERS CH 1 SMPL HOLDS A _ R j 1 a CH 1 OUTPUT SWITCHES SYSTEM CLOCKS 7 V ACQ SETUP CONT SIGS TIME BASE CONT A CE2B N SHIFTD200N ACQUIRE SAVE 1 CLK GATINGj SAVEACQ RAMP 1 CUR SW...

Page 423: ...2440 Service Figure 9 4b 2440 Block diagram part 2 6330 27 BLOCK DIAGRAM PART 2 ...

Page 424: ...CIRCUIT BOARD INTERCONNECTIONS 2440 1 1 _ _____________________________________________________ CIRCUIT BO AR D INTERCONNECTIONS ...

Page 425: ... 50 V Accuracy 3 TEKTRONIX PG 506 Calibration Generator Digital Voltmeter DMM Range 0 to 140 V Dc voltage accu racy 0 15 4 1 2 digit display TEKTRONIX DM 501A Digital Multimeter High Voltage Probe for DMM Maximum voltage 20 kV Fluke Model 80K 40 High Voltage Probe Precision Coaxial Cable Impedance 50 ohm Length 36 in Connectors BNC Tektronix Part Number 012 0482 00 Dual Input Coupler Connectors BN...

Page 426: ...B M J1909 20 4 M P113 11 7E P131 8 7F PI 72 19 2 M J2000 20 5 M P113 11 8A P131 8 7L PI 73 19 2 G J2001 9 7A P113 9 3H P141 10 2F PI 74 19 1G J2002 9 7A P113 9 3N P141 11 1A PI 74 19 2G J2004 9 1C P114 11 6J P141 11 5K PI 74 19 2 M J2005 9 6C P 1 14 9 6N P141 11 6E PI 74 19 4 M LI000 19 IK P117 15 3A P141 11 6J PI 76 19 6A PI 00 17 4A P120 1 IK P141 11 6 M P181 20 2F PI 00 18 3A P120 1 2 M P141 11...

Page 427: ......

Page 428: ...2440 Service WAVEFORMS FOR DIAGRAM 1 6 2 8 5 3 2 ...

Page 429: ......

Page 430: ... 3 6 20 Q 5 1 0 21 R 4 17 21 R 8 96 1 U541 21 C 2 38 20 C 9 3 8 1 Q 51 2 21 R 4 18 21 R 9 00 1 U 542 2 C 2 76 20 C 9 44 1 Q 51 4 21 R 4 19 21 R 9 36 1 U 550 2 C 3 08 21 C 9 48 1 Q 5 8 8 20 R 4 20 21 R 9 40 1 U 552 2 C 3 22 21 C 9 50 1 Q 5 9 2 20 R421 21 R941 1 U 560 2 C 3 24 21 C 9 64 20 Q 5 9 4 20 R 4 22 21 R 945 1 U 562 2 C 3 25 21 C 9 80 20 Q 5 9 6 20 R 4 23 21 R 9 46 1 U 564 2 C 3 2 8 21 Q 6 1...

Page 431: ... 1H 7A R744 70 7F U432B 4K 4E U866B 4M 8J CR902 1J 7A R746 70 7F U572C 5D 5K U866C 3L 8J CR944 2H 9G R748 7J 7F U580A 3M 5L U866D 4D 8J R764 2H 7J U580B 7B 5L U870B 5H 8K J103 4A 9J R800 1H 7A U632 8G 6E U870D 5D 8K J103 5A 9J R802 1J 7A U640 4C 0F U880A 8B 8K J103 9A 9J R812 1G 8B U650 7E 6G U880B 7B 8K J120 IK 9B R814 1G SB U654 8C 80 U880C 8B 8K J120 2M 9B R820 8L 8D U660 2M 8H U880D 4D 8K J120...

Page 432: ...2440 Service WAVEFORMS FOR DIAGRAM 2 BUS ISOLATED 6 6 0 3 4 9 ...

Page 433: ...WAVEFORMS FOR DIAGRAM 2 ...

Page 434: ...0O 6J 3J U580D 4H 5L J124 7M 9H U270E 2B 3J U840A 3K 8F J127 1A 3F TP370 5C 3J U276B IF 3K U840B 3K 8F J128 6A 3K TP371 5C 3J U332D 3B 3E U840C IB 8F J184 SB 3K TP373 4C 3J U350 5J 3G U850A 3L 8G TP374 5C 3J U352 4K 4G U868E IB 8J Q244 5F 3F TP375 5C 3K U360 3D 4H U868F 2C 8J Q332 5G 3E TP562 2H 5H U364 1H 4H UB70C 2C 8K TP576 4C 5K U306 1G 4J U874A 4K 8K R244 5E 2F TP578 4C 5K U432A 5G 4E U874B 3...

Page 435: ...3 13 R 8 09 3 T P 8 2 7 3 C 7 5 t 13 J8 44 13 R 8 1 0 3 TP 871 13 0 7 5 2 13 R811 3 TP 881 3 C 7 53 13 L731 13 R 8 12 3 0 7 5 4 13 R 8 13 3 U 7 00 3 C 7 55 13 Q 761 13 R 8 14 3 U731 13 C 7 5 6 13 Q 771 13 R 8 15 3 U 7 32 13 C 757 13 Q 7 7 2 13 R 8 32 13 U741 3 C 7 5 8 13 Q 7 7 3 13 R 8 33 13 U 7 42 3 C 8 0 0 3 Q 781 13 R 8 34 13 U 7 50 13 C801 3 Q 7 8 2 13 R 8 35 13 U751 3 C 8 1 1 3 Q 7 8 3 13 R84...

Page 436: ...3 m VR L TP601 t 1 5 7 13 18 22 26 39 I W HO U 3 TPB22 _ L _ C I TP623 29 33 37 41 16 20 24 26 t r LINE TRIG G ER W 1 2 2 I n 1 4 1 15 PlliN 8 E p5 iO 1 g I 2 0 1 23 FRONT PANEL PROCESSOR I O BUS TYPE 5VD G N D 74LS02 14 7 74LS74 14 7 74LS244 2 0 1 0 74LS373 2 0 1 0 74LS378 16 6 4 F U 7 4 2 74LS373 U 8 6 2 C 74LS02 1 1 5 10 16 22 26 34 Jz 3 7 13 19 29 31 38 4 TO 1 U752 1 IE U793 1 4E U761 19 4L U7...

Page 437: ...NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER C902 4 CR919 4 CR953 4 R904 4 S903 4 S932 4 C903 4 CR921 4 CR954 4 R913 4 S904 4 S933 4 C904 4 CR922 4 CR957 4 R914 4 S9G6 4 S934 4 C905 4 CR923 4 CR958 4 R916 4 S907 4 S942 4 C906 4 CR924 4 CR959 4 R917 4 S908 4 S943 4 CR927 4 CR962 4 R918 4 S909 4 S944 4 CR901 4 CR928 4 CR963 4 R919 4 S911 4 S952 4 CR902 4 CR929 4 CR964 4 R922...

Page 438: ... IB 2B S942 6C 2A CR908 7E 3B CR958 4E 4C R933 2M 2C S943 6D 2B CR909 7F 3B CR959 5E 4C R934 7L 2C S944 3D 3B CR911 7G 4C CR962 8C 4E R935 7L 2C S852 7C 4E CR912 8H 3C CR963 8E 4E R936 7L 2C S953 8D 4F CR913 7J 3D CR964 7F 3E R937 8M 2B S954 4D 3D CR914 7C IF CR967 8G 2D S962 8C 4E CR916 7E IE CR968 6H 2D S901 3K 1C S963 70 4F CR917 0F IB CR969 8J 3E S902 2K 2B S964 7E 3D CR918 6G ID S903 2K 2A S9...

Page 439: ......

Page 440: ...422 9 C690 6 CR270 11 J191 14 Q621 9 R233 10 C423 9 C701 6 CR285 11 J192 14 Q630 10 R234 9 C430 10 C711 6 CR286 11 J2006 13 Q640 10 R235 9 C432 9 C730 6 CR290 12 Q660 14 R236 9 C440 10 C731 6 CR291 12 LI 20 9 Q670 14 R237 9 C441 10 C732 6 CR292 12 LI 50 11 Q770 14 R238 10 C456 9 C733 6 CR310 9 L200 9 Q771 14 R240 9 C462 10 C734 6 CR311 9 L210 9 Q772 14 R241 9 C463 10 C735 6 CR392 12 L220 9 Q773 14...

Page 441: ...1 5 R371 11 R488 10 R624 9 R763 14 R1001 9 U660 5 R372 10 R489 12 R625 9 R764 14 R1002 9 U661 5 R373 10 R490 12 R626 6 R766 14 R1003 9 U661 6 R374 10 R491 12 R627 6 R771 14 R1004 9 U700 6 R375 10 R492 12 R628 6 R772 14 U770 14 R376 10 R493 12 R631 10 R773 14 S600 6 U780 14 R377 10 R494 12 R632 10 R774 14 S800 6 U810 6 R378 10 R495 12 R633 10 R775 14 S801 6 U811 6 R379 10 R496 12 R634 6 R777 14 U81...

Page 442: ... CR29I R292 R293 CR290 CR292 fl390 S0270 R39I U390 S C39I S VR390 Q390gc390 R387 Q393 R393 5 C47I R471 Q39lg Q494 Q493 R594 o R59 6J J J R595J 8 R388 R389 11590 o R396 m R397 R398 R353 R555 Cfi553 CR552 CR55I C652 TP650n5 S g K g 0460 CR228 CR227 o t o to tE OC 0C s a z S 8 S g S fe S S s S s Z n R469 a I R466 u A r 0 R499 C488 o W R466 J2 ft89 6484 U460 J R777 S _ 1 Tfleee g osso S K ffiE g g i 0...

Page 443: ...0F CR228 6N 7G R665 7F CR420 6N 9G R666 7G PatrialAIO also shown on diagrams 6 9 10 11 12 13 14 and 19 9H R750 5N 8G 8K R751 6N 8H 8K R752 7M 8H R753 4M 8H 2K R760 5F 8J 2K R781 6E 9J R850 6D 9H 1G R851 8F 9J 2N R652 8F 9J 2K R853 8F 9J 2M R855 8F 9J 3M R8S8 8F 9J 2N R857 8F 9J 2N R860 5E 9J 2N R950 6K 10G 2P R951 8L 10G 7F R952 8L 10G 7H R9S3 8K 10G 7G R964 7K 10G 7H R95S 7L 10G 7H R956 6K 10G BH...

Page 444: ...10E U812A 6K 10F C735 7D 8E J i l l 8M 2D R818 6K 10E U812B 6L 10F 0740 ID 9F J141 5A 2K R820 5E 9D U812C 5K 10F 0741 3D 8F J141 6G 2K R821 5E 9D U812D 5K 10F 0742 2D 9F J152 1J 10D R822 3E 9D UB12E 5J 10F 0743 4A 9F J152 2J 10D R823 4E 9D U820A 4E 9D 0744 5B 8G J152 2M 10D R824 4E 8D U820B 6E 9D 0746 5B 9G R825 4E 8D U820C 8E 9D 0746 4B 8G 0810 6J IOC R828 4E 9E U820D 7E 9D 0747 7F 8F R830 ID 9F ...

Page 445: ......

Page 446: ...2440 Service WAVEFORMS FOR DIAGRAM 7 I I f f f NtITOT CHI r K I It MVIHi TRIGGER ON FALLING EDGE OF U832 PIN 8 MORE ...

Page 447: ... r 2 H M i i y PPM J 1 fU H mmm p y 0 irn ri irfifn i r r i J U t y i y l L j 1 M1 W KT1 i n M u i n r v LI r rt U m h I m 4 J s I WAVEFORM 53 IS SHOWN TWICE 0 cm i u m CM2 SV t r i s m u s i U t x n I 0 0 0 1 I f 1 f j l 4 m f i i i i i i i L f t i l l i n f f J ____ i______ ______ i______ i 1 k b i i r n i 6 6 0 3 2 6 ...

Page 448: ...5 C 8 3 2 15 R 1 65 18 R 5 9 5 18 U261 18 U 6 3 0 15 C 3 2 4 15 C 8 3 3 7 R171 18 R 5 9 6 18 U 2 82 18 U631 15 C331 15 C 8 3 4 7 R 1 72 16 R601 18 U 2 90 16 U 6 32 15 C 3 4 0 15 C 8 3 5 7 R 1 92 16 R 6 03 18 U 3 00 8 U 6 4 0 15 C341 15 C 881 15 R 1 93 18 R 6 05 18 U 3 12 17 U641 8 C 3 4 2 15 C 8 9 0 15 R 1 9 4 18 R 6 07 18 U 3 1 3 17 U 6 42 7 C 3 5 0 15 C 8 9 2 15 R 1 9 6 18 R 6 1 0 7 U 3 14 16 U ...

Page 449: ...0 2B 7D R835D 6N 9H U623A 4G 7F U834A 6M 9H R612 2C 7D R841 7M 9J U623B 5G 7F U834B 7M 9H R650E 4J 6K R842 8M 9J U623C IE 7F U834C 7M 9H R713 8E 8D R843 8M 9J U642 5J 7J U834D 7M 9H R715 7E 8D R845A 5N 8J U710 6C SC U835A 6M 9H R716 7E 8D R845B 4N 8J U711A 8B 8C U835B 5M 9H R720A ID 7F R845C 4N 8J U711B 8B 8C U835C 5M 9H R720B 5G 7F R845D 4N 8J U711C 7B 8C U835D 5M 9H R720D 7D 7F U711D 3E 8C R720E...

Page 450: ...2440 Service WAVEFORMS FOR DIAGRAM 8 6603 27 ...

Page 451: ...0B 6E 8E J121 3A 9L R722 4J 80 U613 1L 7D U722B 4J 8F J121 6F 9L U620D 2L 7E U731D 2G 6G J121 0A OL U300 6J 4C U624 7B 7G U750 7A 7J J131 IE 2E U400 5J 5B U641 4B 7J U835F 5F 9H J131 1M 2E U401 7J 5C U650A SD 7K J131 5M ZE U500A 2F 6B U650B 5G 7K W140 1C 8K J131 7F 2E U500B 1G 68 U651A 5E 7K W140 2A 8K J131 7L ZE U500C 1G 6B U651B IK 7K W140 5A 8K U500D 2F 6B U670 3C 7L W140 6F 8K R400 5J 58 U501 ...

Page 452: ...R1002 7B 3A C231 4M 2E CR600 3E 8C R140 5L 2F R1003 7B 1A C232 4M 2E CR601 3E 7B R141 6M 2G R1004 8B 1A C233 2M 2F CR602 3D 7C R143 6M 2G C240 5M 2G CR610 5A 8C R144 5M 2F U100 7K 1A C257 3L 5D CR620 5D 7D R201 6G 3A U120 6H 2D C311 6G 4C CR621 3D 7D R202 6G 3A U220 4C 3D C316 4G 4D CR622 SB 8D R210 7H 3B U221 4B 2E C319 6G 4C R211 7G 3B U230A 4L 2E C320 3L 4C J i l l 5G 2D R215 5H 3C U230B 2M 2E ...

Page 453: ... ACQUISITION B2ECL IN SHORTPIPE MODE 20M S DIV C H I S U H S 2 11 U M E 2 T n T 1 ri n jl1 1 1Tl 1 1 1 1 1 1 1 tuu u k iM yyuyy 4 I I 1 i i 1 1 i L L i B2ECL IN FISO MODE 20ps DIV TEST SCOPE A TRIGGERED ON FALLING EDGE OF SO B TRIGGERED ON RISING EDGE OF B2ECL DBT MORE ...

Page 454: ...D 7F C463 4K 7K 0640 IE 7G R448 1L 5L R636 6D 7F C464 4K 5J R449 1L 5L R637 6D 7F C465 4K 5K R170 5F 2L R452 4F 6K R640 2D 7G C467 4L 6K R171 5G 3J R453 4F 6K R641 ID 7G 0468 51 3K R232 7C 3E R454 3F 7J R642 ID 7G C474 4J 6K R233 7C 3G R455 3G 7J R643 ID 7G C460 8F 6H R238 5A 2F R456 4G 6K R648 IE 7G C493 8F 5P R242 5A 2F R461 3F 6K R647 IE 7G C532 6E 7F R244 6D 4G R463 4K 7K R651 IE 7G C535 4E 7F...

Page 455: ...W A V EFO R M S FOR D IAG RAM 11 WAVEFORMS FOR DIAGRAM 11 6603 29 ...

Page 456: ...N C473 8L 5L Q251 3E 3K R286 6M 2N TP370 5H 4M C484 2H 7L 0270 3H 3N R286 7M 2N TP568 2B 6K C48B 2H 7L 0271 3J 4M R287 6M 2N TP581 2J 6M 0287 7J 2N R287 6M 2N TP585 2B 9P CR270 3J 4M 0288 6J 2P R288 6M 2N TP612 2B 9B CR285 6J 3N R361 4E 4K TP832 2B 10F CR286 7J 3N R134 7B IF R368 7H 3M CR580 1J 6L R145 7D 1G R371A 3E 3K U150 2C 1H CR581 2H 7L R146 7D 1G R371B 3E 3K U370 4G 4L CR582 2J 6L R150 7D 1...

Page 457: ...ART 0 0 c h i s e t u a see u 2 M i U UE T X f I i cmi jg C H 2 JU A 10M U E T r r s L 1 CAL SIGNAL INPUT TRIGGERED ACQUIRING SEC DIV at 100 ms SLOPE ENVELOPE AQUISITION MODE TEST SCOPE TRIGGERED ON SRAMP1 SLOPE TEST SCOPE TIGGERED ON STOP ENVELOPE ACQUISITION MODE ...

Page 458: ...WAVEFORMS FOR DIAGRAM 12 ...

Page 459: ... 0491 2E BN R396 2K 5P R596 1C 4P C492 6K 6N 0492 2E 6N R397 3L 5P R598 7D 5N C590 5J 4N 0493 IE 4N R398 2J 5P R599 4H BP C591 6J 5N 0494 5E 4N R399 2J 5P R690 5E 4P 0495 3J 8P R471 5L 4N CR290 7E 3N R477 8D 6M U390 7J 3P CR291 7C 3N R283 8E 3M R478 8F 6M U490 3J BN CR292 8E 3N R284 6D 4N R482 4E 6M U590A ID 5N CR392 3D 5N R289 6D 3N R483 3B 5M U590B 4D 5N CR490 4E 5N R292 8D 3N R484 ID 6M U590C 8...

Page 460: ...2440 Service WAVEFORMS FOR DIAGRAM 13 TEST SCOPE IN ENVELOPE e x i 1 C l H I M T i 1 T f L i i i _ INIT FRONT PANEL TRIG ON SLOPE MORE WAVEFORMS FOR DIAGRAM 13 ...

Page 461: ...2H 2G R731 7A 2E R884 7M 3M U853A 4D 3H 0852 2H 2H R732 7A 2E R885 8B 3M U853B 60 3H 0861 2H 2J R741 7B 2F R886 7G 2M U871 7K 2K 0864 7J 2K R761 5H IK R887 8J 2M U872A 7L 3L CB71 3G 3K R762 0J 2K R888 8J 2M U872B 7M 3L 0871 3H 3K R771 5G 1L R889 6K 2M U881 8K 3M 0872 3G 2L R772 6H 2K 0873 3G 3L R773 7G 2K TP826 2G 2E VR841 60 3F 0881 7H 2M R774 5H 1L TP871 5L 2J 0682 7H 2M R775 6H 2L W101 1A 2E 08...

Page 462: ...m 0 4 i V 4 V 0 n 1 n i i T 0 fm m X m V 0 i VOLTS DIV AT lOOmV SEC DIV AT 5ms CALIBRATOR SIGNAL APPLIED TO CH 1 INPUT AC COUPLED VERT MODE CH 1 CH 2 FOR CHANNEL 2 TROUBLESHOOTING m M P i n f CMC t W M M A i jM illllliitli J llilII ItU H iirt i 0 k 11 I IP V i i m ini iwiF r 4 i r o f m ji L w l W m m m m t 0 i H I t w m tf J 6 6 0 3 3 0 ...

Page 463: ...WAVEFORMS FOR DIAGRAM 14 ...

Page 464: ... Q775 2E 6M R684 6J 7M U560B 3C 8P C851 6M 10F 0780 6K 7M R685 6J 7M U560C 1H 8P C870 3D 9L 0781 5K 7L R686 6J 7M U560D 3H 8P C872 4C 9K Q782 6K 7L R687 5L 7M U570A 5C 8P C880 7D 7N Q783 6D 7K R763 7L 8J U570B 7C 8P C682 8C 8N 0784 5E 7K R764 8L 8K U570C 5H 8P Q785 6E 7K R766 2C 8M U570D 7H 8P CR771 IK 8M 0870 4K 9L R771 ID 9M U770A 2D 9M CR774 IE 8L 0871 4K 9L R772 3E 8L U770B 2J 9M CR780 5K 7M 0...

Page 465: ...31 A32 A33 C l 14 IF 1A 0126 5C ID R120 4G 1C U111A 2D 1A Cl 15 IF IB 0128 5C ID R121 4F 1C U111B 2D 1A C l 16 2F IB R122 4G 1C U111C 2B 1A C121 4F 1C R111 3C 1A R123 4G 1C U111D 2B 1A R112 3C 1A R124 1G IB U118A IE IB J115 1A IB m i3 2B 1A R125 4B 1C U118B 4E IB J115 1A 1C R114 IB 1A R126 4E 1C U125A 4B 1C J115 1H 18 R115 IE IB R127 4B ID U125B 5B 1C R116 2G IB R128 5C ID U125C 5D 1C 0111 2C 1A R...

Page 466: ...B 6N U512B 4G 6D C342 8C 3K 0601 6C 6B C890 3B 8N U520A 4K 6E C350 6C 3K C610 6C ec C892 4B 7N U520B 3K 6E C392 8B 4M C611 ec 6D U521A 7K 6E C400 ec 4B C612 6C 6D J117 3A 9N U521B 6K BE C401 6C 4C C620 ec 6E U660 2D 7L C402 ec 5C C621 6C 6E L692 5B 6M U630 7M 7G C414 ec 4D C622 ec 6F L694 8B 6M U631 6M 7G C415 ec 4D C623 6C 6F L770 2B 7M U632 4M 7H C416 ec 4E C630 ec 6G U640 3M 7H C420 ec 4F C631 ...

Page 467: ... U142 1M IK U350A 2L 3K U423A 8D 5F J131 7A 2E U240 7K 3J U350D BL 3K U430 7E 4G U241 2J 2J U413B 4B 4D U431 2E 4H R151 1 M IK U243 4 M 2K U421A 2C 4F U440 5E 4J R152 1 M IK U250 5 M 2K U421B 2C 4F U441 4J 4J R156 5 M 2 K U314 4E 3D U421C 5C 4F U450C BH 4 K R156 5 M 2K U320 3G 3E U421D 4 C 4F R450 6K 5K U321 5G 3E U421D 5 C 4F W 1 4 0 8 M 6K U322 2E 3F U422A 7B 4F PatrtalA11 also shown on diagrams...

Page 468: ...2440 Service W A VE FO R M S FOR DIAG RAM 17 TEST SCOPE TRIGGERED ON 126 6330 46 WAVEFORMS FOR DIAGRAM 17 ...

Page 469: ...231 6H 3H U413A 3G 4D U530 2A 5G R223 5G 2F U232 7J 3H U413C 2E 4D U531 X 5G R230 6L 2H U312B 3F 3C U413D 4F 4D U532 6C 5H R232 7J 2H U312C 5F 3C U413E 7F 4D U540 7C 5H R312 2F 3C U313 4H 3D U413F 6L 4D U541 5B 5J R330 6H 3H U323A 4K 3F U414A 4J 5C U542 5C 5J R421C 3G 4E U330 5K 3G U414B 3F 5C U550 1C 5K R421F 4E 4E U340A 7D 3K U415A 3G 5C R732 8L 8G U340B 6D 3K U415B 5F 5C W140 2A 8K U340C 5D 3K ...

Page 470: ...WAVEFORMS FOR DIAGRAM 18 2440 Service TRIGGERED ON AND DISPLAYING CAL SIGNAL 1mS DIV 200mV DIV TRIG POS 1 2 SAVE MODE HF REJ COUPLING MORE ...

Page 471: ... C N i u i t e x r 4 j u J l i 1 i 6 28 5 44 WAVEFORMS FOR DIAGRAM 18 ...

Page 472: ...583 4 K 5 L U 3 9 2 B 7J 4 M C R 191 2 H 2 M R 199 7H 2 M R 584 4 K 5 L U 3 9 2 C 6 L 4 M C R 1 9 3 2 D 3L R 262 8 M I F R 585 2 K 5 L U 3 9 2 D 6 L 4 M C R 1 9 4 2 D 3L R 272 2 F 1L R 5 86 7 K 5 M U 4 6 0 A 4 K 4 L C R 2 8 0 7 D 4 M R 273 2 F 1M R 587 7 K 6 L U 4 6 0 B 2 L 4 L C R 281 7 D 4 M R 274 2G 1M R591 7 L 5 M U 4 6 0 C 2 L 4 L C R 2 8 3 7H 3 M R 276 1G 2 M R 592 7 L 5 M U 4 6 0 D 2 K 4 L ...

Page 473: ...1 16 R247 19 R620 19 C133 19 C628 19 CR644 19 R24B 19 R639 19 C139 19 C629 19 R100 19 R260 16 R641 19 Cl 50 19 C638 19 DS490 19 R119 19 R261 16 R642 18 cieo 19 C639 18 DS491 19 R122 19 R262 16 R643 19 C165 19 C640 19 R137 19 R263 19 R644 19 C179 19 C688 19 J162 19 R145 19 R277 19 R645 19 C189 19 C689 19 J172 19 R160 19 R278 19 R689 16 C690 JUS 19 R161 16 R279 16 R680 19 C216 19 cm 19 J174 19 R162 ...

Page 474: ... R298 2K IE R300 1C ID W175 1C 4E R305 2N ID W175 70 4E C109 7F IB CR134 8E IB C l 33 7E IB CR162 4D 4B C l 39 7E IB CR217 6D 1A C1S0 4D 4E CR315 5D 1A C160 4B 4B CR411 5C 2A C l 65 4C 4B CR442 5F ID C l 79 3D 4E CR500 7H ID C l 89 2D 4E CA541 5F 1C C215 6D 1A CR565 4H 2D C216 5C 2A CR610 5E 2C C217 5D 2A CR611 4E 2C C218 5D 2A CR643 60 1C C222 6E IB CR644 5F 1C C234 7E IB C239 7F 2B DS490 5J 2E C...

Page 475: ...PRESS GPIB TRANSMIT TO RING BELL CH 1 SIGNAL TEST SCOPE IN ROLL MODE 0 C M 1 C M 2 V u a i B f 1 41 u C H 2 00 m m M n p m 14 p m m w m mi 0 0 t W 0 90 i 0 m a i w PRESS GPIB TRANSMIT TO RING BELL NORM TRIGGER ON 151 SLOPE LEVEL 4 4 CAL SIGNAL INPUT Ims DIV 200mV DIV FOR 155 and 156 6 2 8 5 4 5 153 IS FIRST BYTE IN ...

Page 476: ...WAVEFORMS FOR DIAGRAM 20 ...

Page 477: ... 2B 9E R104 1J 2A U264D 5D 3J C360 3C 3H C964 3A BJ R105 1J 2B U270F 5E 3J C366 4C 3J C08O 4C BK R106 1J 2B U274 2B 2K C370 3C 3J R107 2K 2B U332B 6C 3E C372 2A 3K CR104 1J 2A R108 2K 2B U332C 8D 3E C374 2B 3K CR107 2K 2B R120 2J 1C U424E 2J 5D C386 3C 3L CR120 2K 1C R122 2K 1C U532 8E 5E C452 3C 4G CR122 2K 1C R274 1A 3K U624 5E 6D C462 3C 4H CR594 2D 5M R276 2A 3K U630 5D 6D C464 3C 4J CR596 IB ...

Page 478: ...AGRAM 21 BW LIMIT 20 MHz ON TEST SCOPE CHI tv V A H M 9 re v eR T I H r J_ J j t __L__i_ COMPOSITE FLAT FIELD NEG SYNC VIDEO SIGNAL AP PLIED TO CH 2 INPUT TRIG SOURCE CH 2 TRIG CPLG TV A TV COUPLING ALT 0 C M Ill 1 i 1M m IM 1 MORE ...

Page 479: ...0 0 C H I i l l l A 2 2 4 8 U f T X t 1 i i J C H i 2 V F A i i t t 2 4 5 U M E M i f H r i j l I i 1 6 2 8 5 4 6 WAVEFORMS FOR DIAGRAM 21 ...

Page 480: ...4E 7J 5D 0608 6 Q 6 B R214 4F 3B R506 2D 5B U430A IN 4E C809 4B 6 B R218 2H 2C R512 3F 5C U430B 1 M 4E C612 1 0 60 R224 2 G 2C R524 6B 50 U504 3G 5B C620 ID 60 R226 3L 2D R529 7M 5D U510 2 G 5B 0622 IB 6 D R228 5L 3D R602 30 6 B U514 6 D 50 C824 2A 70 R234 3K 36 R603 2E 6B U520 SD 5C C712 7F 7B R308 IE 3B R604 3G 6B U624A 7L 5D 0713 4D 7B R314 7E 3C R606 3B 6B U524B 7M 5D C714 4A 7B R320 5J 3C R60...

Page 481: ...50 CR823 R824 U829 R4291 R926 C528t o u 8 4 0 R128 R938 C929 CR723 CR724 R822 R823 C823 R834 R845 R847 R836 R939 R728 C728 RI43 C944 1756 C650 3 R758 U265 UI55 R760 RI67 RI95 0197 C262 J I02 CR685 CR586 CR485 C595 C487 W360 R376 W368 W460 R473 W467 C494 C594 W566 R873 W662 W664 R773 W762 0585 0695 CR576 WS60 W862 W865 CR684 W868 0279 Q479 Q879 0779 U579 U679 Figure9 1 2 A16 Power Supply board COMP...

Page 482: ...C328 22 CR484 23 P60 22 R325 22 R777 23 U570 23 C368 23 CR485 23 P70 22 R368 23 R794 23 U579 23 C384 23 CR510 22 P80 22 R369 23 R795 23 U679 23 C405 22 CR550 22 R374 23 R796 23 1 770 23 C455 22 CR551 22 Q148 22 R376 23 R797 23 U829 22 C460 22 CR575 23 Q240 22 R388 23 R808 22 U834 22 C461 22 CR576 23 Q279 23 R394 23 R809 22 U840 22 C483 22 CR583 23 Q295 23 R396 23 R815 22 U870 23 C485 23 CR586 23 Q...

Page 483: ... NORMAL AC LINE OPERATION EITHER AC POWER OR CONTROL CIRCUIT POWER ONLY CONTROL CIRCUIT POWER NORMAL AC LINE OPERATION NORMAL AC LINE OPERATION TEST SCOPE IN ENVELOPE NORMAL AC LINE OPERATION NORMAL AC LINE OPERATION EITHER AC POWER OR CONTROL CIRCUIT POWER NORMAL AC LINE OPERATION NORMAL AC LINE OPERATION NORMAL AC LINE OPERATION NORMAL AC LINE OPERATION EITHER AC POWER OR CONTROL CIRCUIT POWER C...

Page 484: ...IAGRAM 22 cont 2440 Service EITHER AC LINE OR CONTROL CIRCUIT POWER EITHER AC POWER OR CONTROL CIRCUIT POWER CM iU f t 1 M 84 V UttT E H H j I t j I I L 6330 54 CONTROL CIRCUIT POWER ONLY WAVEFORMS FOR DIAGRAM 22 cont ...

Page 485: ...5D R410 5C 4C U233 2E 6D C528 6E 6E J102 ID 1J R428 3H 2D U265 3G 8G C550 5N 4H R429 5E 6E U829A 5G 5F C553 7M 2G L256 6M 1H R434 BE 3E U829B 0H 5F C625 4H ID L556 7M 2G R435 7E 3E U834A 2F 4F C650 BN 5H L557 5M 3G R436 7D 3E U834B 3G 4F C706 20 5C L656 5M 4G R483 1C 2L U840A 5F 6F C72B 8G 6F L709 3B 5B R505 4B 5B U840B 6E 6F C750 8M 4G L715 2B 5C R516 IB 2A U840C 6E 6F C756 5W 3G L756 8M 5G R518 ...

Page 486: ...a 0385 7E 2K R578 1C 4L U470B 3E 3K C873 8B 6K 0485 2E 3K R578 6J 4K U570A 1C 5K 0880 2L 2L 0479 2F 33 R67S 7C 5L U5708 7B 5K C900 21 3M 0685 6H 4K R67B 7C a U579 IB 53 c a o t 2K 2M 0770 6J 43 R684 53 4L U679 88 8J 0870 3H 3K R688 4B 3L U770A 5H 4K CR265 7E 2L 0879 3J 3J R688 4B 2L U770B 50 4K CR288 SE a R758 8K 50 U670A 4H 3K CR485 2E 3K R164 2K a R780 8K 6Q U8708 4H 3K CR466 3E 2K R165 2K a R76...

Page 487: ... THE SECONDARY IS EXCESSIVELY LOADED CHECK THE WAVEFORMS AT THE ZERO OHM RESISTORS INDICATED IN THE ACCOMPANYING COMPONENT LOCATION FIGURE FOR AN INDICATION OF EXCESSIVE LOADING A SHORTED SECONDARY CIRCUIT IS IDENTIFIED BY A MUCH SMALLER VOLTAGE WAVEFORM THAN SEEN ON A GOOD SECONDARY SEE ACCOMPANYING WAVEFORM ILLUSTRATION NOTE A SHORT ON THE 5 VD SUPPLY WILL BLOW FUSE F269 H __ T J o o j o o i o o...

Page 488: ...OW START INPUT USE THE NODE BETWEEN R845 AND R847 AS A SOURCE OF 1 6 V TO DRIVE THE COMP PIN 9 AND SOFT START PIN 8 INPUTS OF U233 IN THE FOLLOW ING MANNER 1 MONITOR THE DRIVE WAVEFORMS TO THE GATES OF PWM FETS Q424 AND Q421 TO OBSERVE THE CHANGES THAT OCCUR 2 CONNECT THE 1 6 V LEVEL TO PIN 8 OF U233 CHECK THAT THE DRIVE WAVEFORM DUTY CYCLE DECREASES FROM APPROXIMATELY 45 TO APPROXIMATELY 15 MEASU...

Page 489: ...ROKEN CORE CHECK R323 AND R137 PINS 1 1 AND 1 4 S545X DUTY CYCLE PULSES AT 40ps PERIOD EXERCISE S D SHUTDOWN ENSURE CLOCK KEEPS RUNNING CONNECT U233 10 TO 5 1V REFERENCE U233 16 OBSERVE THAT U233 4 PULSES ARE STILL OCCURRING OBSERVE THAT U233 11 1 4 WAVEFORMS STOP AND A LOW VOLTAGE I S PRESENT ON THESE PINS EXERCISE E A ERROR A M P L IF IE R TO VERIFY FUNCTIONALITY OBSERVE U233 11 14 OUTPUT DRIVER...

Page 490: ...YES ...

Page 491: ...e U313 PIN 2 STOP 512 U313 PIN 1 OCB U313 PIN 6 U414 PIN 6 DISDN U323 PIN 1 PRESTART 1 1 3 2 3 PIN 2 DISPLAY U415 PIN 5 START DIS U415 PIN 1 STOP DIS U412 PIN 8 U411 PIN 8 4917 6BA 6330 59 DISPLAY TROUBLESHOOTING ...

Page 492: ......

Page 493: ...log ing Handbook H6 1 can be utilized where possible FIGURE AND INDEX NUMBERS Items in this section are referenced by figure and index numbers to the illustrations INDENTATION SYSTEM This mechanical parts list is indented to indicate item relationships Following is an example of the indentations system used in the description column 1 2 3 4 5 Name Description Assembly and or component Attaching pa...

Page 494: ......

Page 495: ...0513 TK1312 LEMO USA INC 335 TESCONI CIR PO BOX 11006 SANTA ROSA CA 95406 TK1359 BLAIR HIRSCH CO 9645 SW BEAVERTON HWY BEAVERTON OR 97005 TK1386 PYRAMID ELECTRONICS SUPPLY INC 9757 JUANITA DRIVE NE KIRKLAND W A 98034 TK1465 BEAVERTON PARTS MFG CO 1800 N W 216TH AVE HILLSBORO OR 9 7 1 2 4 6 6 2 9 TK1499 AMLAN INC 97 THORNW OOD RD STAMFORD CT 0 6 9 0 3 2 6 1 7 TK1585 POFCO INC 12805 SE CAPPS RD PO B...

Page 496: ...EN PRAIRIE MN 5 5 3 4 4 2 2 2 4 5Y400 TRIAX METAL PRODUCTS INC DIV OF BEAVERTON PARTS MFG CO 1800 216TH AVE NW HILLSBORO OR 9 7 1 2 4 6 6 2 9 58050 TEKA PRODUCTS INC 45 SALEM ST PROVIDENCE Rl 02907 61857 S A N 0 INDUSTRIAL CORP 85 ORVILLE DR PO BOX 511 BOHEMIA LONG ISLAND NY 11716 2501 7X318 KASO PLASTICS INC 11015 A NE 39th VANCOUVER W A 98662 70903 COOPER BELDEN ELECTRONICS WIRE AND CABLE SUB OF...

Page 497: ...74 01 1 SPRING FILTER 1 32 L CU BE TK0011 ORDER BY DESC 11 337 2926 03 1 SHLD IMPLOSION 4 44 X 3 67 X 0 06 CLEAR TK1159 ORDER BY DESC 12 334 5581 0 3 1 MARKER IDENT MKD 76814 ORDER BY DESC 1 3 334 6758 00 1 MARKER IDENTMKD STD CONNECTOR 76814 ORDER BY DESC 334 6759 00 1 MARKER IDENTMKD PROBE POWER OPTION 11 ONLY 76814 ORDER BY DESC 1 4 334 5696 02 1 MARKER IDENTMKD OPTION 07416 ORDER BY DESC 1 5 3...

Page 498: ...Fig Tektronix Serial No Qty 12345 Name Description Mfr Mfr Part No Index Part No Effective Dscont Code No 10 6 REVJUL 1993 Replaceable Mechanical Parts ...

Page 499: ...YES ...

Page 500: ... DATA CLOCKS TROUBLESHOOT MISSING OR WRONG CLOCKS TROUBLESHOOT MISSING OR WRONG CLOCKS NO YES CHECK CLKLATCH S SHIFT200N CLOCKS r SYSTEM CLOCKS OK 2440 Service TROUBLESHOOT U730 U621 U720A U620B U623B U513E U731 AND ASSOCIATED COMPONENTS TROUBLESHOOT U831 U832 U833 U834 U835 U721 U522A U623A U620A U513D AND ASSOCIATED COMPONENTS TROUBLESHOOT U642 6603 48 SYSTEM CLOCK TROUBLESHOOTING ...

Page 501: ......

Page 502: ...2440 Service FIG 1 C A B IN E T ...

Page 503: ......

Page 504: ...ORDER BY DESC 2440M ONLY END ATTACHING PARTS 352 0641 0 0 1 HOLDER LED FIVE POLYURETHANE BLACK TK1905 ORDER BY DESC 1 5 377 0550 01 2 INSERT KNOB 0 178 ID X 0 37 OD X 0 64 TK1167 ORDER BY DESC 1 6 210 0590 00 3 NUT PLAIN HEX 0 375 32 X 0 438 BRS 73743 28269 402 1 7 210 0012 00 3 WASHER LOCK 0 384 ID INTL 0 022 THK STL 78189 1220 02 00 0541 1 8 214 3373 00 3 SPRING GROUND PHOSPHOR BRONZE 92101 ORDE...

Page 505: ...ORDER BYDESC END ATTACHINGPARTS 43 1 COIL TUBE DEFL SEEL I000REPL 348 0762 00 1 GROMMET PLASTIC NATURAL ROUND 0 54I D 0JRO5 ORDER BYDESC 44 175 9271 00 1 CA ASSY HV DESCRETE SDI 14 24AWG 9 5L 0J7N9 ORDER BYDESC 45 200 0917 01 1 COVER CRTSKT 2 052OD X0 2 9 1 H PLASTIC 0JR05 ORDER BYDESC 46 441 1562 00 1 CHASSIS SCOPE REAR 0J9P9 ORDER BYDESC ATTACHING PARTS 47 213 0942 00 4 SCREW TPG TR 6 32X 0 7 5 ...

Page 506: ...END ATTACHING PARTS CO NN CIRC SLDR CUP 3 MALE 3 FEMALE SEE J1908R EPL TK0435 ORDER BY DESC 5 8 2 1 0 0 0 2 1 0 0 1 W ASHER LOCK 0 476 ID INTL 0 018 THK STL 0KB01 ORDER BY DESC 5 9 CO NN RF JAC K BN C 50 OHM FEMALE STR SEE J1900 1901 1902 1903 1904 1905 1906 6 0 1 7 5 9 3 5 7 0 1 1 3 1 3 3 8 8 0 1 1 2 FLEX CKT ASSYiREAR PANEL POLYMIDE CONN RCPT ELEC CKT BD 2 X 8 0 1 SPACING 80009 58050 175935701 T...

Page 507: ...6 2 INTEGRATEDCKT SEEA10U370 U470REPL 17 214 3637 01 2 HTSK MICROCKT ALUMINUM BLACKANODIZE TK1359 MCHS 68 1 2 18 2 SKT PL INELEK SEEA10XU340 XU440REPL 19 2 MICROCKT HYBRID SEEA10U340 440REPL ATTACHING PARTS 20 210 0586 00 6 NUT PL ASSEMWA 4 40X0 2 5 STL TK0435 ORDER BYDESC 211 0324 00 2 SCR ASSEMWSHR 4 40X0 188 PNH T9 0KB01 ORDER BYDESC 129 0985 00 2 SPACER POST 0 350L 4 40THRU STL 0 25HEX TK1287 ...

Page 508: ...TACHING PARTS 34 211 0304 00 4 SCR ASSEMWSHR 4 40X 0 3 1 2 PNH STL T9 END ATTACHING PARTS 0KB01 ORDER BYDESC 35 3 5 1 0677 01 2 GUIDE MAGCATCH BLACK PLOYCARBONATE TK1905 351 0677 01 37 361 0382 00 6 SPACER PBSW 0 275L BROWN POLYCARB 0JR05 ORDER BYDESC 38 214 0973 00 162 0533 00 B010100 B012568 B012567 1 1 HEATSINK XSTR TO 92 CUBE INSULSLVG ELEC HTSHRINK 0 2 5I D 80009 06090 214097300 VERSAFIT 39 3...

Page 509: ...Fig Tektronix Serial No Qty 12345 Name Description Mfr Index Part No Effective Dscont Code No Mfr Part No 10 12 REVJUL 1993 Replaceable Mechanical Parts ...

Page 510: ...2440 Service SISSVHO Z Old ...

Page 511: ......

Page 512: ...A12 2440 Service F IG 3 C IR C U IT BOARDS ...

Page 513: ......

Page 514: ... TERMINAL PIN PRESSFIT PCB MALE STR 22526 48283 018 166 0165 00 2 SPACER SLEEVE 0 35LX0 055ID CERAMIC 80009 166016500 175 9230 01 1 CAASSYSP RIBBON CPR 10 26AWG 0 1 CTR 0J7N9 ORDER BYDESC LVPSTO HVBOARDS 16 441 1573 01 1 CHASSIS SCOPE CENTER 0J9P9 ORDER BYDESC 17 348 0897 00 1 GROMMET PLASTIC 1 5 3 4ID BLACK RECT TK1163 ORDER BYDESC 18 337 1925 00 B010100 B012402 1 SHIELD ELEC CIRCUITBOARD 0J9P9 O...

Page 515: ...0V 2 5M OPTIONA5 SWISS ACCESSORY KIT TWOPROBES COMPACTTIP S3109 ORDER BYDESC 016 0537 00 1 POUCH ACCESSORY6 I NX 9I NW ZIPPER 05006 ZIP 6X9ID 070 6599 00 1 MANUAL TECH OPERATORS 2440 80009 070659900 070 6600 00 1 MANUAL TECH USERS 2440 80009 070660000 070 6601 00 1 MANUAL TECH PROGRAMMERS 2440 80009 070660100 070 6602 00 1 MANUAL TECH POCKET PROGRAMMERS 2440P2G 80009 070660200 134 0016 01 1 ADAPTE...

Page 516: ... 1 COMPONENT KIT SPANISHHELP TEXT OPTION4SONLY 80009 020170202 020 1703 00 B010100 B012859 1 UPGRADE KIT DANISH 80009 020170300 020 1703 02 B012860 1 COMPONENT KIT DANISHHELP TEXT OPTION4D ONLY 80009 020170302 020 1704 00 B010100 B012859 1 UPGRADE KIT ENGLISH 80009 020170400 020 1704 02 B012860 1 COMPONENT KIT ENGLISHHELP TEXT 2440 ENGLISH 80009 020170402 2440 Service REV JUL 1993 10 15 ...

Page 517: ...10 16 R E V J U L 1993 Replaceable Mechanical Parts ...

Page 518: ...2440 Service ...

Page 519: ...FIG 4 L V H V PWR SUPPLY ...

Page 520: ...FIG 5 ACCESSORIES 2440 Service ...

Page 521: ......

Page 522: ...ON Manual Part No 070 6603 00 First Printing July 1988 Product 2440 Service Manual Serial Number B014064 below Revised July 1993 Manual Insert Status DATE CHANGE REFERENCE STATUS 1 July 1993 C7 0793 Effective Page 1 of 1 ...

Page 523: ......

Page 524: ...OCK DRIVERS Removet e s tp o i n tTP281 l o c a t i o n8 C Diagram CCD OUTPUT Changet h ev a l u eo fr e s i s t o r sR683 l o c a t i o n5 J R771 l o c a t i o nI D R775 l o c a t i o n1J R781 l o c a t i o n5 D R871 l o c a t i o n3 D R873 l o c a t i o n3 J R881 l o c a t i o n7 D andR883 l o c a t i o n7 J t o1 5 KQ EFFECTIVE SERIAL NUMBERS 2440 B013321 and above EFFECTIVE SERIAL NUMBERS 2440M...

Page 525: ...2 fo Oj W 900 f o O jW 802 Q Oj R801 to f 0710 O o o R711 c 0 9 o R715 C712 o V O D W I CR715 R712 o 9 o R716 R713 o 9 9 R717 C713 o 9 9 cm VR717 R714 o 9 9 o R718 C714 o 9 9 C719 R810 o J f q R719 o R8i O D o o o o o O VR816 I C 716 1 O jR9Q0 j O O O O O O O O O C K O O O O O O O O I J181 W 800 TP902II C904 o o o o o o o o o o o o o c o o o o o o o o o o o o c J120 Diagram SYSTEM PROCESSOR DIAGRA...

Page 526: ...oard R650 is teepee d to C652 location 7H EFFECTIVE SERIAL NUMBERS 2440 B012403 and above EFFECTIVE SERIAL NUMBERS 2440M B010108 and above DIAGRAM CHANGES Replace the A17 HV Power Supply Circuit board layout and reference table with the new layout and table attached Replace Diagram 19 HV SUPPLY CRT schematic and reference table with the new schematic and table attached Remove CR510 on the A16 LV P...

Page 527: ...2403 and above EFFECTIVE SERIAL NUMBERS 2440M B010108 and above DIAGRAM CHANGES Replace CRS10 on Diagram 22 LV POWER SUPPLY with diodes CR511 CR512 CR513 and CR514 as shown EFFECTIVE SERIAL NUMBERS B011739 and above Add the procedure on the following page after Procedure 1 Cabinet Removal on page 6 1 7 Page 4 of 5 ...

Page 528: ...ing the front casting In addition the gaskets frontand rear should be in good condition showing no signs of corrosion wear or loss of resilience If the EMI rope gaskets are not ingood condition theyshould be replaced c Replace the back panel and install the four screws in an X pattern install top left screw then bottom right screw followed by bottom left screw then top right screw to 16 inch pound...

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