Tektronix 7B87 Instruction Manual Download

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Summary of Contents for 7B87

Page 1: ...077 070 2788 00 Product Group 42 COMMITTED TO EXCELLENCE PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL 7B87 TIME BASE WITH PRETRIGGER ACQUIRE CLOCK INSTRUCTION MANUAL Serial Number _ _ _ __ First Printing APR 1980 Revised JAN 1986 ...

Page 2: ...e done as follows 1 Typed text pages are typically scanned in black and white at 300 dpi 2 Photo pages are typically scanned in gray scale mode at 600 dpi 3 Schematic diagram pages are typically scanned in black and white at 600 dpi unless the original manual had colored high lighting as is the case for some 70 s vintage Tektronix manuals If you purchased this manual from us typically through our ...

Page 3: ... price change privileges are reserved INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a pa el insert tag or stamped on the chassis The first number or letter designates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digits The country of manufac...

Page 4: ...OFF AMPLIFIER AND DELAY GATE GENERATOR 3 1 LOGiC 3 1 DIGITAL VOLTMETER 3 1 CLOCK GENERATOR 3 1 REV JUN 1981 PAGE DETAILED CIRCUIT DESCRiPTION 3 1 FRONT PANEL DISTRIBUTION 3 3 TRIGGER GENERATOR 3 3 EXTERNAL SOURCE 3 3 INTERNAL AND LINE SOURCE 3 3 TRIGGER SOURCE SELECTOR AND AMPLIFIER 3 3 PEAK TO PEAK AUTO 3 3 SLOPE SELECTOR AND TRIGGER GENERATOR 3 5 GATE GENERATOR 3 5 LOGiC 3 5 SWEEP MODES 3 5 HOLD...

Page 5: ...4 6 CORRECTIVE MAINTENANCE 4 8 OBTAINING REPLACEABLE PARTS 4 8 SOLDERING TECHNIQUES 4 9 COMPONENT REMOVAL AND REPLACEMENT 4 10 CIRCUIT BOARDS 4 10 SWITCHES 4 12 SEMICONDUCTORS 4 15 INTERCONNECTING PINS 4 15 CIRCUIT BOARD PINS 4 15 FRONT PANEL LIGHTS 4 16 ADJUSTMENT AFTER REPAIR 4 16 INSTRUMENT REPACKAGING 4 16 SECTION 5 PERFORMANCE CHECK AND ADJUSTMENT PAGE PRELIMINARY INFORMATION 5 1 ADJUSTMENT I...

Page 6: ...e for a typical cam switch 4 2 Semiconductor lead configuration 4 3 Inter board multi pin connector assembly 4 4 REV JUN 1981 FIG NO 4 4 4 5 4 6 PAGE End lead mUlti pin connector assembly 4 4 Location of pin numbers on Interface connector 4 5 7B87 troubleshooting chart 4 7 4 7 Readout board removal procedure 4 10 4 8 Coaxial end lead connector assembly 4 11 4 9 Location of securing screws and inte...

Page 7: ...Table TIME DIV Setting vs Strobes for U637 and U638 3 13 3 2 Selected Inputs or Xl and Xl0 Multiplexers 3 14 3 3 Operation of Output Multiplexer U655 3 15 3 4 Current in CH 1 Readout Line vs Acquire Clock Mode During TS10 3 16 3 5 Readout Character Selection 3 18 4 1 Relative Susceptibility 4 5 5 1 Test Equipment 5 2 5 2 Acquire Clock Repetition Rate Output 5 11 5 3 Delay Time Linearity 5 12 5 4 A...

Page 8: ...king SYMBOLS IN THIS MANUAL Static Sensitive Devces This symbol indicates where applicable cautionary or other information is to be found AS MARKED ON EQUIPMENT DANGER High voltage Protective ground earth terminal ATTENTION refer to manual POWER SOURCE WARNINGS This product is intended to operate in a mainframe connected to a power source that will not apply more than 250 volts rms between the sup...

Page 9: ...der an electric shock DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES To avoid explosion do not operate this product in an atmosphere of explosive gases unless it has been specifically certified for such operation DO NOT OPERATE PLUG IN UNIT WITHOUT COVERS To avoid personal injury do not operate this product without covers or panels installed Do not apply power to the plug in unit via a plug in extender v...

Page 10: ...exist at several points in this product To avoid personal injury do not touch exposed connections and components while power is on Disconnect power before removing protective panels soldering or replacing components POWER SOURCE This product is intended to operate in a mainframe connected to a power source that will not apply more than 250 volts rms between the supply conductors or between either ...

Page 11: ...endenltlme base or as a delayed s eep unit th a companion delaYing Ilme base Unit S eep mode IS determmed by the companion delaYing lime base The 7B87 alsolealUres an Internally generated clock and an eJtternal clock mput lor sequential single s eep acquIsitIOn when operating In a 7ooo sefle5 d 9ltl ln9 oscdloscope The Irequency range of the Internally generated clock IS 2048 mHz mliliheru to 20 4...

Page 12: ...dure for checking the unit is given under Sweep Functions in the Functional Check procedure in this section To remove the unit first turn the power off then pull the release latch see Fig 1 1 to disengage the unit from the mainframe and pull it out of the plug in compartment CONTROLS CONNECTORS AND INDICATORS All controls connectors and indicators required for the operation of the time base unit a...

Page 13: ...G P P AUTO AC AUTO AC IF REJ READY III EXT CLOCK IN 110 MHz MAX 19 l 7 H lOOK YPl 5Y o NO GlESWP J RESET AC HF REJ DC TIME BASE 1M 7 SOURCE INT 0 LINE nJ EXT IT HOLD OFF W PRETRIGGER ACQUIRE CLOCK Figure 1 2 Front panel controls connectors and indicators 27883A ...

Page 14: ...the sweep generator VARIABLE Control and CAL Switch Selects calibrated or uncalibrated sweep rates Uncalibrated sweep rates can be continuously reduced to at least the sweep rate of the next slower position SWP CAL Adjustment Compensates for basic timing changes due to the differences in sensitivity of mainframes EXTERNAL TRIGGER INPUT EXT TRIG ATTENUATOR Selects attenuation factor for external tr...

Page 15: ...icule is magnified to about 10 divisions 3 Press the MAG button X1 1 4 TRIGGERING FUNCTIONS Perform the following procedure to obtain a triggered sweep and to demonstrate the functions of the related controls 1 Obtain a display as described in the preceding Normal Sweep procedure 2 Press the AUTO MODE button and turn the LEVEL control fully counterclockwise to obtain a free running sweep 3 Slowly ...

Page 16: ...unterclockwise Notice that delav time readout located in the lower right hand corner of the crt is near 0 2 ms Zero delay time means that the acquired signal occurred prior to the triggering event 8 Rotate the ACQUIRE STOP DELAY control until the delay time readout is approximately 4 ms Notice that the first four divisions of squarewave display are intensified The 4 ms intensified display relates ...

Page 17: ...ary to reset the LEVEL control for each observation The P P AUTO MODE is used for most applications because of the 1 6 ease of obtaining a triggered display The AUTO NORM and SINGLE SWP MODE settings may be used for speCial applications AUTO The AUTO MODE provides a triggered display with the correct setting of the LEVEL control whenever an adequate trigger signal is applied see Trigger Level disc...

Page 18: ... of pretrigger and post trigger time in the subsequent stored single sweep display The post trigger portion is intensified in the real time display and the exact time is displayed by CRT readout see Fig 1 3 NOTE Occasionally when using the 7887 7854 the first point of single shot acquired AQS waveform will be displayed at the end of the trace extreme right and will appear that the waveform has mad...

Page 19: ... 102 4 x External Clock Period 102 4 x EXT CLOCK REQUENCY NOTE The 7854 may not return from the acquire single shot AOS mode if the acquire stop occurs before the memory is filled once This is most noticeable at slow sweep speeds especially in the internal 1 000 clock mode When the 7854 AOS button is pressed the 7854 begins to sample the waveform and fill the memory The acquire stop signal occurs ...

Page 20: ...s to be triggered at a low repetition rate or a dc level one of the other COUPLING switch positions will provide a better display REV A MAR 1981 Operating Instructions 7887 AC LF REJ AC LF REJ COUPLING rejects dc and attenuates low frequency trigger signals below about 30 kilohertz Therefore the sweep is triggered only by the higher frequency components of the trigger signal This position is parti...

Page 21: ...OSITIVE 1 1 SLOPE J 1 1 r V j I 1 11 J w POSITIVE 1 1 SLOPE V 11 t I II I 1 J NEGATIVE I I SLOPE V f J 1 II 1 r I i J IA I J 1 1 J f fj 1 D J I I J 1 10 CRT DISPLAY OBTAINED WITH SLOPE SWITCH SET TO NEGATIVE I I TRIG O 1 1l 1P LEVEL D 11 It I _ 1 IV NEGATIVE I I SLOPE I 1 I 1 11 U Figure 1 4 Effect of LEVEL control and SLOPE switch on crt display U IV A r f 1 1I IV 1 C1958 7 REV A MAR 1981 ...

Page 22: ... set in the region the trigger circuit responds at a more positive point on the trigger signal When the LEVEL control is set in the region the trigger circuit responds at a more negative point on the trigger signal Figure 1 4 illustrates this effect with different settings of the SLOPE switch To set the LEVEL control first select the TRIGGERING MODE COUPLING SOURCE and SLOPE Then set the LEVEL con...

Page 23: ...owing information describes procedures and techniques for making basic time measurements with the time base unit installed in a Tektronix 7700 7800 or 7900 series oscilloscope These procedures provide enough detail to enable the operator to adapt them to other related time measurements Contact your Tektronix Field Office or representative for assistance in making measurements that are not describe...

Page 24: ... TIME AND FALL TIME MEASUREMENTS Perform the following procedure to measure the rise time and fall time of a displayed waveform 1 Install the time base unit in a mainframe horizontal compartment either A or B Horiz in a four compartment mainframe 2 Connect the signal to be measured to the vertical unit input 3 Set the mainframe Horizontal and Vertical Mode switches to display the time base and the...

Page 25: ...ur compartment mainframe 2 Connect the signal to be measured to the vertical unit input 3 Set the mainframe horizontal and vertical mode switches to display the time base and vertical unit Check that the time base VARIABLE CAL IN control is pushed in and the HOLD OFF control is in the MIN position 4 Set the TRIGGERING switches and LEVEL control for a stable display see General Operating Informatio...

Page 26: ...e points is 3 divisions and the TIME OIV switch setting is 0 1 ms see Fig 1 9 Using the formula Horizontal distance x TIME OIV divisions setting Pulse Width Magnification MAR 1981 Operating Instructions 7B87 Substituting values Pulse Width 3 x 1 ms 0 3 millisecond 1 15 ...

Page 27: ...ns div in 27 steps X10 Magnifier extends fastest calibrated sweep rate to 1 ns div Continuously variable uncalibrated sweep rate to at least 2 5 times the calibrated sweep rate setting With SWP CAL adjusted at 1 ms div within the temperature range of 200 to 300 C to a timing reference of 0 25 or better 150 to 350 C 0 0 to 500 C Unmag Mag Unmag Mag 4 0 5 0 5 0 6 0 1 5 2 5 2 5 3 5 2 5 4 0 3 5 5 0 Fi...

Page 28: ...xternal 30 Hz to 50 MHz 0 3 div 50 mV 50 MHz to 400 MHz 1 5 div 250 mV 30 kHz to 50 MHz 0 3 div 50 mV 50 MHz to 400 MHz 1 5 div 250 mV 30 Hz to 50 kHz 0 3 div 50 mV Dc to 50 MHz 0 3 div 50 mV 50 MHz to 400 MHz 1 5 div 250 mV 0 1 ns or less at 400 MHz 250 V dc plus peak ac 1 MO within 5 20 pF within 10 Checked on 1 kHz sine wave At least and 1 5 volts At least and 15 volts Triggering Minimum Trigge...

Page 29: ... 100 kO within 5 Threshold Voltage TTL compatible Maximum Input Frequency 10 MHz BNC to Interface Delay 0 5 Ils or less Acquire Stop Delay Range 0 2 or less to at least 9 9 times TIME DIV setting Jitter 5 s div to 10 Ils div 0 02 of TIME DIV setting or less Delay Accuracy 150 C to 350 C 0 5 s Div to 10 Ils Div Within 0 5 of measurement plus 5 of TIME DIV setting TABLE 2 2 Mainframe Horizontal Comp...

Page 30: ...o the Specification section of the associated mainframe manual Characteristic Net Weight Dimensions TABLE 2 4 Physical Characteristics Information Approximately 2 6 pounds 1 2 kilogram See Figure 2 1 dimensional drawing STANDARD ACCESSORIES 1 ea Instruction Manual 2 4 ...

Page 31: ... 0 000 000 o a a 0 J J 0 J o II 50 J 12 7 J 0 Q o 0 Q L2 J 7 2 12 i 3 1 NOTE Dimensions are given with top figure in inches and bottom figure in centimeters OVERALL DIMENSIONS MEASURED AT MAXIMUM POINTS 12 5 31 8 14 5 36 9 2788 4 C C o I O l I J III CO J ...

Page 32: ...r in the 7887 The Sweep Generator also generates a Sweep Gate pulse which unblanks the mainframe crt PICKOFF AMPLIFIER AND DELAY GATE GENERATOR The Pickoff Amplifier and Delay Gate Generator circuits produce a delay gate when the sawtooth signal from the sweep generator reaches the level set by the ACQUIRE STOP DELAY control The ACQUIRE STOP DELAY control determines where the intensified zone ends...

Page 33: ...GENERATOR DIAG 8 0 I I I I L MAG TlME DIV B DELAY A16 MODE B7 PICKOFF AMPLIFIER DIAG IACQUIRE STOP Irr 0 DELAY DELAY GATE GENERATOR ROW COLUMN DATA TIME DIV READOUT All SIGNAL SWEEP OUTPUT CLOCK GENERATOR 0 INTENSIFY t TIMt AV DVM 0 Bll SWEEP GATE Al UNBLANKING CH 1 ROW DATA B37 B5 CLOCK A 17 AUX Z AXIS B16 AUX Y AXIS B4 HOLD OFF A38 B9 CH 2 COLUMN DATA DELAY TlME READOUT DELAY GATE C1961 1 Figure...

Page 34: ... the Trigger Source Selector and Amplifier stage at U65 pin 2 TRIGGER SOURCE SELECTOR AND AMPLIFIER The Trigger Source Selector and Amplifier stage partial U65 selects the triggering signal source from the signal being displayed INT an external source EXT or a sample of the power line voltage LINE The trigger source is selected by SOURCE switch S50 The voltage offset from LEVEL control R60 is coup...

Page 35: ...GER SOURCE PEAK TO PEAK LEVEL RANGE R60 ILEVEL IJ AND 19 AUTOMATIC GAIN CONTROL l U55A 10 PARTIAL I U65 TRIGGER MODE SWITCHING S220 114 J15 1 DC PEAK DETECTOR CENTERING l U75A U75B U55B PEAK TO PEAK AUTO SLOPE BALANC R80 e TRIGGER 13 17 r DC R85 oBALANCE TRIGGER 16 S60 14 ISLOPEr 1 TRIGGER DISABLE DIAG DELAY MODE CONTROL MAINFRAME DIAG TRIGGER GENERATOR GATE SLOPE 3 SELECTOR AND TRIGGER GENERATOR ...

Page 36: ...there is no effect on the Trigger Generator circuits However when the unit is operating in the B starts after delay mode a high level at U85 pin 16 supplies a trigger gate pulse to U85 pins 3 and 4 in the absence of a trigger disable pulse at the emitter of 0242 At the end of each sweep the Logic circuits diagram 3 supply a trigger disable pulse through 0242 to U85 pins Theory of Operation 7B87 6 ...

Page 37: ...inhibited until the SINGLE SWP RESET button is pressed The READY light indicates that the sweep is ready to accept a trigger 3 6 After completion of one sweep the Holdoff Start pulse at U220 pin 16 causes the Swp Disable Out at pin 17 to rise high A high level at U220 pin 12 initiates single sweep operation and holds the sweep disable out at U220 pin 17 after completion of the sweep Momentary cont...

Page 38: ...P CONTROL INTEGRATED CIRCUIT 2 Theory of Operation 7B87 SWEEP GENERATOR The Sweep Generator produces a linear ramp waveform for the mainframe when gated by the Trigger Generator The sweep trace is displayed either independently or as the intensified sweep when used with a companion delayed time base unit of an alternate display The sweep ramp is also used as a time reference for the delay pickoff ...

Page 39: ... I SWP CAL L l REFEREN C E VOLTAGE TO DIAG TIMING CURRENT SOURCE I I r I I L BASELINE I RAMP STABI LlZER 1 _ ___ _ __1 1 I VOLTAG E FOLLOWE R _ SWEEP STA RET GAT DIAG o 0304A 0304B T I 0334A 0334B 0314 I 1 0338 CURRENT SWITCH 0322 0324 TIMING CAPACITORS C330 C331 C332 C334 C 36 SWEEP RAMP RAMP GENERATOR 1961 5 2788 105A Figure 3 5 Detailed block diagram of Sweep Generator 3 8 REV JUN 1981 ...

Page 40: ...N I PREAMPLIFIER r 0424 0428 0448 0434 Xl0 I 0438 0458 Xl I I R410 I FINE I R415 TlMESLOT 1 DIAG o B33 OUTPUT PREAMPLIFIER I I POSITION I VOLTAGE I SOURCE U416 Xl0 Theory of Operation 7887 __ _______ Al SWEEP GATE UNBLANKINGI A3 B3 r All Bll A SWEEP AUX SAWTOOTH OUT B SWEEP SIGNAL SWEEP SIGNAL SWEEPI COLUMN ANALOG DATA READOUT MAG STATUSI DIAG 1961 5 2788 1070 Figure 3 5 contI Detailed block diagr...

Page 41: ...orm a single ended to push pull converter with 0428 and 0438 as current follower stages for the push pull signal Output 0448 and 0458 provide final amplification and connect the sweep signal to the mainframe 3 10 The MAG switch S435 increases the Horizontal Preamplifier gain ten times by connecting R431 and R430 in parallel with R442 The Position Voltage Source stage combines the dc voltages of th...

Page 42: ...on This causes the Schmitt trigger transistor 0568 to conduct a greater current through TRIGGER EVENT Theory of Operation 7887 0574 whose collector voltage falls and forms the trailing edge of the Delay Gate Emitter follower 0578 applies the Delay Gate to pin B9 of the Interface Board s edge connector Figure 3 6 shows the timing of the events that form the Delay Gate Signal If the 7B87 is in the A...

Page 43: ...t which reverse biases CR555 This causes U535 to forward bias CR547 and allows reference current to flow from the summing node at pin 2 of U547 A low at pin 16 of U590 forward biases CR555 turning off CR547 and routing the reference current away from U547 s summing node 3 12 COUNTER AND ENCODER The Counter and Encoder circuit consists essentially of a four decade counter with a mUltiplexer and ass...

Page 44: ...10 multiplexer U637 from 5s to 50 ls div when the MAG button is set to X1 O Table 3 1 is a truth table that gives details of this operation When the TIME DIV switch is set between 5 sand 10 ls Div section 1 of S800 turns Q607 off The high level output of Q607 permits the Delay Time Comparator diagram 5 to operate At settings between 5 lS and 10 ns Div Q607 is turned on producing a low output level...

Page 45: ... w 0 J 0 Clock pin B5 0 0 0 0 0 J 0 0 Clock pin B5 0 0 J 0 0 N r N r r r r r r r N r r r r r r I I I 01 I I I I 20 48 Hz X X 204 8 Hz X X 51 2 Hz X X 512 Hz X X 102 4 Hz X X 1 024 kHz X X 204 8 Hz X X 2 048 kHz X X 512 Hz X X 5 12 kHz X X 1 024 kHz X X 10 24 kHz X X 2 048 kHz X xX 20 48 kHz X X 5 12 kHz X 51 2 kHz X X 10 24 kHz X X 102 4 kHz X X 20 48 kHz X X 204 8 kHz X X 51 2 kHz X X 512 kHz X X...

Page 46: ...ivider and selects the one designated by the outputs of the TIME DIV switch as the Internal Clock One of sixteen multiplexer U660 is the Output Clock Multiplexer Table 3 2 shows which inputs U660 selects for each setting of the TIME DIV control OUTPUT CLOCK MULTIPLEXER The Output Clock Multiplexer receives the Internal Clock the Int 1000 clock and the Ext Clock signals and selects one of them to b...

Page 47: ...r 0691 conducts current from the mainframe which intensifies the display When the TIME DIV control is set to 10 Jl s or faster 5 V turns on CR677 via R611 This clamps the emitter of 0691 to about 3 4 V which turns it off and prevents intensification External Clock Buffer The External Clock Buffer receives the signal from the EXT CLOCK IN connector buffers it and applies it to the Output Clock Mult...

Page 48: ...and column output lines The row and column current levels are decoded by the readout system to address a character matrix during each time slot thus selecting a character to be displayed or a special instruction to be followed Theory of Operation 7887 TIME DIVISION READOUT Time Division readout is displayed on channel 1 top of the graticule corresponding to the plug in compartment in which the tim...

Page 49: ...ated sweep rates and delay times Scaling TIME DIV Scaling Delay Time Defines the prefix which modifies the units of measurement Defines the unit of measurement Indicates differential delay time measurement Indicates Acquire Clock Mode by magnitude of now current Used by 7854 mainframe Encoded By Channel 1 Timel Division R751 R752 R756 R761 R764 R771 R772 R773 R781 R782 R783 R784 R793 R794 I I I I ...

Page 50: ...nditions The best way to clean the interior is to blow off the accumulated dust with dry low pressure air Remove any dirt which remains with a soft brush or a cloth dampened with a mild detergent and water solution A cotton tipped applicator is useful for cleaning in narrow spaces SWITCH CONTACTS Switch contacts and pads are designed to operate dry for the life of the switch However as the switche...

Page 51: ...the detent springs if more than one spring is replaced o Ensure that some lubricant is present at the interface between the bearing and retainer clip C1967 2 Figure 4 1 Lubrication procedure for a typical cam switch TROUBLESHOOTING The following information is provided to help troubleshoot this instrument Information contained in other sections of this manual should be used along with the followin...

Page 52: ...D CONFIGURA TlONS AND CASE STYLES ARE TYPICAL BUT MA Y VARY DUE TO VENDOR CHANGES OR INSTRUMENT MODIFICATIONS om II I I c E c i I E J D bJ B B D PLASTIC CASE PLASTIC CASE TRANSISTORS FETS 8 5 7 4 11 INTEGRATED CIRCUITS Figure 4 2 Semiconductor lead configuration w NDEX II I 0 11 D D S G L DUAL METAL CASE FET 9 1986 66 2788 51 B 4 3 ...

Page 53: ...s the lead configurations for all semiconductors used in this instrument Some plastic case transistors have lead configurations that do not agree with those shown here If a replacement transistor is made by a different manufacturer than the original check the manufacturer s lead configuration diagram All transistor sockets in this instrument are wired for the standard lead configuration used for m...

Page 54: ...es or linear microcircuits with MOS inputs Most sensitive ECl 2 Schottky signal diodes 3 Schottky TIL 4 High frequency bipolar transistors 5 JFETs 6 linear Microcircuits 7 low power Schottky TTL 8 TIL least sensitive 9 Voltage equivalent for levels 1 100 to 500 V 4 500 v 7 400 to 1000 V est 2 200 to 500 V 5 400 to 600 V 8 900 V 3 250 V 6 600 to 800 V 9 1200 V Voltage discharged from a 100 pF capac...

Page 55: ...is located Many troubles can be located by visible indications such as unsoldered connections broken wires damaged circuit boards damaged components etc 4 CHECK INSTRUMENT ADJUSTMENT Check the adjustment of this instrument or the affected circuit if the trouble appears in one circuit The apparent trouble may be the result of misadjustment Complete adjustment instructions are given in the Performan...

Page 56: ...k TIME DIV readout display I Timing and readout display correct I I Readout incorrect TIME QlVIStON AND A REAOOUTSWITCHING Mainframe Intensity level set IIX high DVM Pickoff amplifier and delay gate generator No intensified CLOCK GENERATOR 1 Rotate ACQUIRE STOP DELAY controi t __ zo_n_e__ I eck TP 5 al di tens ty logiC clockwise The intensified zone should begin at left edge of screen and move to ...

Page 57: ... case For most silicon or germanium diodes with a series of stripes the color code identifies the four significant digits of the JEDEC or vendor number using the resistor color code system e g a diode color coded yellow brown green red indicates a 1N 4152 diode Resistors Check resistors with an ohmmeter See the Replaceable Electrical Parts list for the tolerance of the resistors used in this instr...

Page 58: ...tc a higher wattage rating soldering iron may be required Match the soldering iron to the work being done For example if the component is connected to the chassis or other large heat radiating surface it will require a 75 watt or larger soldering iron The following techniques should be used to replace a component on a circuit board 1 Grip the component lead with long nose pliers Touch the solderin...

Page 59: ...circuit board is damaged beyond repair replace the entire board assembly Part numbers for completely wired boards are given in the Replaceable Electrical Parts list A3 READOUT CIRCUIT BOARD To remove the circuit board follow the procedure given in Figure 4 7 1 Note index of multi pin connector attached to board and disconnect cable 2 Loosen set screw on variable switch assembly 3 Remove VARIABLE C...

Page 60: ...shown in Figure 4 9 4 Lift rear of circuit board away from the frame and slide board to the rear until pushbutton switches are clear of front panel 5 Disconnect coaxial end lead connector from bottom of board see Fig 4 8 for identification Remove board from instrument 6 Remove remaining 5 screws to detach aluminium shield 7 To replace circuit board reverse order of removal A1 INTERFACE CIRCUIT BOA...

Page 61: ...presentative can provide additional repair information The following special maintenance information is provided for switch replacement 4 12 CAM SWITCHES Cam switches consist of a rotating cam that mates with contacts on the adjacent circuit board These contacts are activated by lobes on the cam as the switch is rotated A cam switch can be disassembled for inspection cleaning repair or replacement...

Page 62: ...or shielded cables and connector to which each attach Then disconnect cables 3 Remove the TIME DIV and VARIABLE CAL IN knobs as follows a Set the TIME DIV switch to the 2 ms position and the VARIABLE CAL IN knob out to expose set screw b With a hex key wrench loosen the set screws in both knobs Remove knobs from shaft 4 Remove 8 screws securing cam type switch to the Interface circuit board 5 Disc...

Page 63: ...d switch body S CAUTION When the switch is removed the contacts may drop free and be damaged or lost Body salts or acids can contaminate the switch contacts Wear cotton gloves to prevent touching the contacts in the switch or on the board with bare hands o Pull the rear of the switch up remove the steel rule and pull the switch out of the front clip CD To replace the w tch first check that the sli...

Page 64: ...al type end lead connectors requires special tools and techniques only experienced maintenance personnel should attempt to remove and replace these connectors It is recommended that the cable be replaced as a unit For cable part numbers see the Replaceable Mechanical Parts list An alternative solution is to refer the replacement of the defective connector to your local Tektronix Field Office or re...

Page 65: ...d pin and ferrule 4 16 SLEEVE CAP C1986 73 Figure 4 13 Front panel light socket assembly Incandescent lamps are used to illuminate the transparent pushbutton switches To replace incandescent lamps unsolder the lead wires from the rear of the cap see Fig 4 13 pull the cap and bulb out of the sleeve Solder the replacement lamp and lead wires to the cap Install the assembly in the sub panel sleeve AD...

Page 66: ...he complete adjustment procedure make each adjustment to the exact setting indicated Partial Procedures The following procedure is written to completely check and adjust the instrument to the Performance Requirements listed in Section 2 Specification If the applications for which the instrument is used do not require the full available performance the procedures and the required equipment list can...

Page 67: ...es a display for unit under test Provides vertical input to oscilloscope main frame Provides a delayed trace for the Delay Time Accuracy check and adjustments Provides a means to check the internal and and external clock signal amplitudes Provides a means to check the internal and external clock frequencies External clock input check High frequency trigger ing checks Medium frequency triggering ch...

Page 68: ...ction from freq probe used see item 5 uency Counter frequency counter b TEKTRONIX P61 01 probe Tektronix 7000 series Provides access to a Tektronix Part extender internal adjustments 067 0589 00 Calibration and test points Fixture Impedance 50 0 type Provides signal inter a Tektronix Part RG 58 U length 18 connections 012 0057 01 inches connectors BNC Connectors BNC External trigger and a Tektroni...

Page 69: ...3 11 Check Delay Time Accuracy 5 13 12 Check Sweep Timing 5 14 13 Check Magnified Sweep Timing 5 14 14 Check Special Readout Encoding 5 15 Performance Requirement check see introductory information 5 4 PRELIMINARY PROCEDURE 1 Install a 7A16A Amplifier unit in the left vertical compartment and a 7A19 Amplifier unit in the right vertical compartment of the oscilloscope mainframe 2 Install the 067 05...

Page 70: ...he low frequency sine wave generator and the amplifier unit deflection factor for a 0 3 division display at 50 kilohertz Center the display vertically d Set the TRIGGERING LEVEL control to approximately 0 midrange and TRIGGERING SLOPE to J Performance Requirement check see introductory information e Check for a stable display with TRIG D light on f ADJUST R85 DC Balance for a stable crt display g ...

Page 71: ...and minus 1 5 volts Check that the display is not triggered at either end of the LEVEL control rotation e CHECK Change the TRIGGERING LEVEL to and repeat part d for the negative slope of the waveform Performance Requirement check see introductory information 5 6 A4 ADJUST TRIGGERING SENSITIVITY R49 a Set the TRIGGERING LEVEL control to o Set the TRIGGERING MODE to NORM and SOURCE to INT b Set the ...

Page 72: ...enerator for a 2 5 division display 125 millivolts J Performance Requirement check see introductory information Performance Check and Adjustment 7B87 j q CHECK Set the TRIGGERING MODE to P P AUTO and check for a stable display TRIG D light on at all settings of the LEVEL control with the COUPLING switch set to 1 AC 2 DC j r CHECK Set the SLOPE to and repeat part q s Disconnect the medium frequency...

Page 73: ... switch to 20 ns o Set the medium frequency signal generator and the amplifier unit deflection factor for a 0 3 division display at 50 megahertz j Performance Requirement check see introductory information 5 8 p CHECK For a stable display TRIG D light on with the COUPLING switch set to 1 AC 2 AC LF REJ 3 DC Set TRIGGERING LEVEL control as necessary q CHECK Set the SLOPE to and repeat part p r Set ...

Page 74: ...IGGERING a Remove all signal connections Performance Requirement check see introductory information Performance Check and Adjustment 7887 b Set the TRIGGERING SOURCE to LINE the TIME DIV switch to 1 ms and the MAG switch to X1 c CHECK Set the TRIGGERING LEVEL to approx imately midrange and check that the TRIG D light is on d CHECK That the display is not triggered TRIG D light off at either end of...

Page 75: ...to display the A horizontal plug in compartment b Connect the time mark generator to the amplifier unit input with a 50 ohm cable Set the time mark generator for 1 millisecond markers Set the mainframe intensity and focus for the desired display j Performance Requirement check see introductory information 5 10 c Set the LEVEL control for a stable display TRIG D light on Set the amplifier unit for ...

Page 76: ... divisions will stabalize at least 3 times throughout the range of the HOLD OFF control disregard any slow drift g Set the HOLD OFF control counterclockwise to MIN and set the LEVEL control for a stable display v Performance Requirement check see introductory information Performance Check and Adjustment 7B87 B5 ADJUST 50 ns SWEEP TIMING C330 a Set the TIME DIV switch to 50 ns and set the time mark...

Page 77: ...LAY control fully clockwise h Set the time mark generator for 1 millisecond markers i Check that the intensified zone is on the 11 th time marker j ADJUST R530 Pickoff Bias to position the intensified zone to the 11 th marker and the rising edge of the delayed sweep marker to 5 divisions 25 I1S from the start of the delayed sweep Performance Requirement check see introductory information 5 12 k IN...

Page 78: ... add 80 000 to that amount j Rotate the ACQUIRE STOP DELAY control clockwise to the amount calculated in part i k ADJUST R715 10 ms Timing to align the rising portion of the delayed sweep marker with the center vertical graticule line I INTERACTION Repeat parts interaction is eliminated through k until 811 CHECK DELAY TIME ACCURACY a Remove the 7887 and plug in extender from the A horizontal compa...

Page 79: ...ver the center 8 divisions within the tolerance given in Table 5 5 Set the POSITION controls and TRIGGERING LEVEL control as necessary for a stable display aligned with the vertical graticule lines NOTE If the time mark generator used does not have 1 2 5 sequence markers apply 1 unit markers in place of 2 unit markers and check for 2 markers division over the center eight divisions of display to t...

Page 80: ...in 0 4 div 5 s Within 0 4 div 1 Check for 1 time marker in 2 divisions over the center eight divisions Performance Requirement check see introductory information REV APR 1985 Performance Check and Adjustment 7BB7 814 CHECK SPECIAL READOUT ENCODING a Remove the 7887 from the oscilloscope mainframe b Set the AQS CLOCK AQR switch to INTERNAL c Connect the digital multimeter between pins A29 and 837 o...

Page 81: ...887 INSTRUMENT OPTIONS No options were available for this instrument at the time of this printing Information on any subsequent options may be found in the CHANGE INFORMATION section in the back of this manual 6 1 ...

Page 82: ...number T Circuit number Read Resistor 1234 of Assembly 23 Example b component number r A23A2R1234 A23 A2 R1234 Assembly Subassembly number number Circuit number Read Resistor 1234 of Subassembly 2 of Assembly 23 Only the circuit number will appear on the diagrams and circuit board illustrations Each diagram and circuit board illustration is clearly marked with the assembly number Assembly numbers ...

Page 83: ...SONIX INC JOHNSON E F CO TRW INC TRW ELECTRONIC COMPONENTS IRC FIXED RESISTORS PHILADELPHIA DIV TEKTRONIX INC DALE ELECTRONICS INC Address SANGAMO RO POBOX 128 1201 SOUTH 2ND ST 13500 NCENTRAL EXPRESSWAY POBOX 225012 M S 49 17070 EGALE AVE POBOX 1220 50B3 KINGS HWY ROUTE 202 WGENESEE ST 19TH AVE SOUTH POBOX B67 S005 EMCDOWELL RD 11901 MADISON AVE 464 ELLIS ST 2850 MT PLEASANT AVE LOHER WASHINGTON ...

Page 84: ...t No A1 CKT BOARD ASSY INTERFACE REPLACEABLE AS AUNIT NITH 672 D829 XX A2 670 4181 01 CIRCUIT Bo ASSY TRIGGER SOO09 670 41B1 o1 A3 670 4183 00 CIRCUIT Bo ASSY REAoOUT 80009 670 4183 00 A4 670 6184 00 8010100 8023314 CIRCUIT 80 ASSY CLOCK SOO09 670 6184 00 A4 670 6184 01 8023315 CIRCUIT 80 ASSY CLOCK BOO09 670 6184 01 REV AUG 1985 7 3 ...

Page 85: ...I 100V 04222 MA201C472KAA A1C731 281 0772 00 CAP FXo CER oI 4700PF 10I 100V 04222 MA201C472KAA A1CB10 281 0775 00 B010100 8023285 CAP FXo CER oI 0 1UF 20I 50V 04222 MA205E104MAA A1CB10 283 0167 00 B023286 CAP FXo CER OI 0 1UF 10I 100V 04222 3430 100C 104K A1CB20 290 0745 00 CAP FXO ELCTLT 22UF 5O 10I 25V 54473 ECE A25V22L A1C822 281 0815 00 CAP FXo CER oI 0 027UF 20I 5OV 04222 MA205C273MAA A1C83o ...

Page 86: ...898 1110242 151 0223 00 TRIINSISTOR NPN SI TO 92 04713 SPS8026 1110272 151 0223 00 TRIINSISTOR NPN SI TO 92 04713 SPS8026 1110274 151 0223 00 TRIINSISTOII NPN SI TO 92 04713 SPS8026 1110304 151 0354 00 TRIINSISTOR PNP SI TO 78 32293 ITS 1200 11 1110314 151 0220 00 TIIIINSISTOII PNP SI TO 92 04713 SPS8867 1110322 151 0367 00 TRIINSISTOR NPN SI X 55 04713 SPS 8811 1110324 151 0367 00 TRIINSISTOR NPN...

Page 87: ...5043CX120ROJ A1R228 315 0184 00 RES FXO CMPsN 180K OHM 5 0 25K 19701 5043CX180KOJ A1R231 315 0432 00 REs FXO CMPsN 4 3K OHM 51 0 25K 57668 NTR25J E04K3 A1R232 315 0121 00 REs FXO CMPsN 120 OHM 5 0 25K 19701 5043CX12OROJ A1R233 315 0561 00 REs FXO CMPsN 560 OHM 5 O 25K 19701 5043CX560ROJ A1R234 315 0430 00 REs FXD CMPSN 43 OHM 5 O 25K 19701 5043CX43ROOJ A1R240 315 0471 00 REs FXD CMPsN 470 OHM 5 O ...

Page 88: ... 5X O 25K 19701 S043CX1MOOOJ A1R414 321 0362 00 RES FXD FILM 57 6K OHM 1X O 125M TC TO 19701 S043ED57K60F A1R416 321 0289 03 RES FXO FILM 10 0K OHM O 25X O 125M TC T2 07716 CEAC10001C A1R422 315 0680 00 RES FXD CMPSN 68 OHM 5X O 25M 57668 NTR2SJ E68EO A1R424 323 0285 00 RES FXD FILM 9 09K OHM 1X O 5K TC TO 19701 S053RD9K090F A1R426 315 0180 00 RES FXD CMPSN 18 OHM 5X O 25M 19701 S043CX18ROOJ A1R42...

Page 89: ... FILM 576K OHM 1I 0 12 TC TO 07716 CEA057602F A1R712 315 0273 00 RES fXO CMPSN 27K OHM SI 0 25 57668 NTR25J E27KO A1R713 315 0273 00 RES fXO CMPSN 27K OHM SI 0 2 57668 NTR25J E27KO A1R714 321 0363 00 RES fXO FILM 59 0K OHM 1I 0 12 TC TO 07716 CEA059001F A1R715 311 1232 00 RES VAR NONNN TRMR 5OK OHM O 32997 3386F T04 503 A1R717 321 0360 00 RES fXO FILM 54 9K OHM 1I 0 125 TC TO 19701 5033E054K90F A1...

Page 90: ...AMPL SELECTEO 02735 85147 A1VR314 152 0168 00 SEMICONO OVC OI ZEN SI 12V 5Z 0 4H 00 763B 14552 10331689 MVR728 152 0226 00 SEMICONO OVC OI ZEN SI 5 1V 5Z 0 4H 00 7 04713 SZ12262RL A1H1 131 0566 00 BUS CONO OUMMY RES 0 094 00 X0 225 L 24546 ONA 07 MH2 131 0566 00 BUS CONO OUNMY RES 0 094 00 X0 225 L 24546 ONA 07 A1H3 131 0566 00 BUS CONO OUNNY RES 0 094 00 X0 225 L 24546 ONA 07 A1H4 131 0566 00 BUS...

Page 91: ... SR205A681JAA A2C69 281 0773 00 CAP FXo CER oI 0 01UF 10t 100V 04222 MA201C103KAA A2C71 281 0773 00 CAP FXo CER oI 0 01UF 10t 100V 04222 MA201C103KAA A2C72 290 0580 00 CAP FXO ELCTLT 0 27UF 20t 50V 05397 T368A274M050AI A2C73 283 0114 00 CAP FXO CER oI 1500PF st 200V 59660 805 534 Y500152J A2C74 283 0114 00 CAP FXo CER oI 1500PF st 200V 59660 805 534 Y500152J A2C75 281 0773 00 CAP FXo CER oI 0 01UF...

Page 92: ...NDNI IW TRMR 500 OHM O 5M 32997 3352T CK5 501 A2RSO 315 0133 00 RES FXD CMPSN 13K OHM 5I 0 25M 19701 5043CX13KOOJ A2R51 321 0274 00 RES FXD FILM 6 98K OHM 1I O 125M TC TO 19701 5043ED6K980F A2R52 321 0431 00 RES FXD FILM 301K OHM 1I O 125N TC TO 07716 CEAD30102F A2R53 315 0124 00 RES FXD CMPSN 120K OHM 5I O 25M 19701 5043CX120KOJ A2R54 315 0622 00 RES FXD CMPSN 6 2K OHM 5I 0 25M 19701 5043CX6K200J...

Page 93: ...FXD FILM 1 24K OHM 1X O 125N TC TO 24546 NA5501241F RES FXO CMPSN 47 OHM 5X O 25N 57668 NTR25J E47EO RES FXO CMPSN 47 OHM 5X O 25N 57668 NTR25J E47EO RES FXO CMPSN 220 OHM 5X O 25N 57668 NTR25J E220E SNITCH P8 ASSY 1 PUSH 7 5 MM 1 CONTACT 80009 263 0010 01 SNITCH P8 ASSY 4 LATCHING 7 5 MM 5 CONTACT SAFETY CONTROLLED SNITCH P8 ASSY 3 LATCHING 7 5 MM MICROCKT LINEAR OPNL AMPL SELECTED MICROCKT LINEA...

Page 94: ...OK A3R754 315 0154 00 RES FXD CMPSN 15OK OHM 5 0 2 57668 NTR25J E150K A3R755 321 0344 00 RES FXD FILM 37 4K OHM 1 0 12 TC TO 19701 5033ED 37K40F 3R756 315 0753 00 RES FXD CMPSN 75K OHM 5 0 57668 NTR25J E75KO A3R757 321 0327 00 RES FXD FILM 24 9K OHM 1 0 1 TC TO 07716 CEAD24901F 3R761 315 0154 00 RES FXD CMPSN 150K OHM 5 O 57668 NTR25J E15OK 3R762 315 0154 00 RES FXD CMPSN 150K OHM 5 0 57668 NTR25J...

Page 95: ... fXO CER OI 0 1UF 20 5OV 04222 MA205E104MAA A4CR544 152 0141 02 SEMICONOOVC OI SM SI 30V 150MA 30V 00 35 03508 OA2527 1N4152 A4CR547 152 0141 02 SEMICONO OVC OI SM SI 30V 15OMA 30V 00 35 03508 OA2527 1N4152 A4CR552 152 0141 02 SEMICONOOVC OI SM SI 30V 15OMA 30V 00 35 03508 OA2527 1N4152 A4CR554 152 0141 02 SEMICONOOVC OI SM SI 30V 15OMA 30V 00 35 03508 OA2527 1N4152 A4CR555 152 0141 02 SEMICONOOVC...

Page 96: ...X10KOOJ 114R558 315 0331 00 RES FXD CMPSN 330 OHM 57 O 25N 57668 NTR25J E330E 114R559 321 1651 04 RES FXD FILM 37 5K OHM O 17 O 125N TC T2 91637 MFF1816D37501B 114R581 315 0202 00 RES FXD CMPSN 2K OHM 57 O 25N 57668 NTR25J E 2K 114R582 315 0332 00 RES FXD CMPSN 3 3K OHM 57 0 25 57668 NTR25J E03K3 114R591 315 0101 00 RES FXD CMPSN 100 OHM 57 O 25 51668 NTR25J E 100E 114R606 307 0542 00 RES NT K FXD...

Page 97: ...FET INPUT 27014 AL160307 MU547 156 0105 02 8010100 8023314 MICROCKT LINEAR OPNL AMPL SELECTEO 01295 LM301AJG4 A4U547 156 1149 01 8023315 MICROCKT LINEAR OPERATION AMP JFET INPUT 27014 AL160307 A4U556 156 0382 02 MICROCKT DGTL QUAD 2 INP NAND GATE BURN 18324 N74LSODNB A4U590 155 01B5 00 MICROCKT INTFC ML 4 DECADE OGTL YOLTMETER 80009 155 0185 00 A4U621 156 01BO 04 MICROCKT DGTL QUAD 2 IMP NAND GATE...

Page 98: ...1315 01 CONN RCPT ElEC 8NC FEMALE 80009 131 1315 01 l326 108 0271 00 COIl RF FIXED 235NH 80009 108 0271 00 Q732 151 0410 00 TRANSISTOR PNP SI TO 92 04713 5P56765 R60 311 1192 00 RE5 VAR NDNHN PNl 1DK OHM 1 SN 12697 381 CM39695 R210 311 0467 00 RES VAR NDNItf PNl 100K OHM O 5M 01121 M77058 R330 315 0330 00 RES FXD CMPSN 330HM Sl O 25M 19701 5043CX33ROOJ R331 315 0330 00 RES FXD CMPSN 33 OHM Sl O 25...

Page 99: ...ar fixed or variable HR Heater TC B Motor HY Hybrid Circuit TP BT Battery J Connector statIOnary portion U C Capacitor fixed or variable K Relay CB Circuit breaker L Inductor fixed or variable V CR Diode signal or rectifier M Meter VR DL Delay line P Connector movable portion W DS Indicating deVice lamp Q TranSistor or Silicon controlled Y E Spark Gap Fernte bead rectifier Z Fuse R ReSistor fixed ...

Page 100: ... E D METAL CASE TRANSISTORS NOTE LEAD CONFIGURA TlONS AND CASE STYLES ARE TYPICAL BUT MA Y VAR Y DUE TO VENDOR CHANGES OR INSTRUMENT MODIFICA TlONS 7 4 11 10 INDEX I INTEGRATED CIRCUITS I 1 9 8 6 6 6 2 7 8 8 5 1 B Figure 8 1 Semiconductor Lead Configurations REV SEP 1981 ...

Page 101: ...7887 x JOEX s 0 G 8 J A2 TRIGGER Shown on d tgs 1 2 Al INTERFACE Shown on lj S 1 23A56 7 A3 READOUT Shown on flags 1 4 7 he 7887 t boards In t t ns of ClrcUi 8 2 Loca 10 Figure Section 8 7B87 7788 75 ...

Page 102: ...OUHIO l I 1 I I I _I I _L ___ PbO I R44 2 0 R Oh1 1il4 HIOh J400 5 0 11 4 1 11 41 TO Q22A v l J c c g PIN 1 PIN II o U oS TO Ufo f I SV ttlL j M 00 q fr j U 51lj I Al TR f iCo 1 I I n UJI UM t 1 ul _ p p AUTO AUTO NORM I l pno d 1 i I ISV 1 r I v hl k j TO CR53 R l8 o 5 L_ Q OfV t I I SV Tn 1 l t JA a410 N ...

Page 103: ...f R441 4 l T1 R4 1 y L __ I 1 r l INTERNAL 5645 To 700 10 iPARTIAL Al lHTEI lF CE OAIlO I TO R4 Q 0 f ROM sv t 4 47 p o R lll 11 11 1 1 50Y TO II Q 1 IO 8 __ tt 2D9 I I l I 1 k FT IPI TO JSOO I TSIO _ III FRO PIO 2 6 Lf 11l 114 4 WI ROW ANALo OATA 11 645 IW TOPIO 16 o oy PS O t INT IOOO __ _ __ v R 31 1 i AQS CLOCK AQR I I 5 TO US 2 I 5V f646 111 I f FROM 4 EXTjAqRto __ 1 ___________ _ U 55 IO R m...

Page 104: ...u CK el 1 C c JlE L J CH It u cz C 0 C2 2 1 C2 J CJ CJ JUG C3 M u C3 c l C5 0 0 cs 3 cs us J c cs C6 cs at C6 C6 lO t un i Jn C1 4 UM C7 C7 C7 C71 IJ _ IIM C70 cr CI I c Cll C8l II coo 15 l c C8 Figure 8 3 A2 Tttgger circuit board assembly REV SEP 1981 ...

Page 105: ...0 58 4C 5C 1E 2C 50 50 5E 5E 3C 40 38 48 2E 2E 2E 1E 1E 38 48 58 5C 4C A4 CLOCK CKT GRID NO COORD R15 48 R16 10 R19 5C R20 48 R21 58 R22 48 R23 4C R29 10 R30 48 R31 40 R32 50 R33 50 R34 50 R35 40 R36 40 R37 40 R38 48 R41 4C R42 48 R43 3D R44 20 R45 10 R47 3C R48 2E R49 2E R50 3C R51 38 R52 38 R53 38 R54 38 R55 38 R56 2C R57 3C R58 3C R59 3C R61 20 A1 INTERFACE Shown on diags 1 4 7 CKT GRID NO COOR...

Page 106: ...s shown on the dIagram were oblalned USIng a dIgItal mulll neter WIth 8 10 MO Input Impedance TektronIX OM SOl Olgllal Muillmeter or Tektron x 7013 O gltal Multlmeter used wIth readout eqUIpped 7 X senes OSCIlloscope Waveform Condi1ions The waveforms Shown below were obtaIned usmg a test OSCilloscope system WIth 10 MO Input Impedance and at least 60 MH bandwIdth Tektroolll 7603 OSCIlloscope 7B53A ...

Page 107: ...1 3 o c I tIOfoF FROMo 1 c RS IIS V e _ W 9 4_ _ 1 _ _ PAlln4LAI NT9F 11oa SO Ll lBSl PARTIAL 520 A oc LF 12 6 J c T ___ t ___ J 0 T A X T LINE l l o iC E tNT _ _ __ C At J lT L 1 _ _ 00 D aH 1 iV 0 GJD 1 H c 0 J i J 3 r t 16V 01 TfI G G 1l SOU c SELE TOa NO p p uTO A MPI L L A PEA OfiTECTCla OUT 2788 201 REV SE P I 3BI ...

Page 108: ... 16V 4 __ _ ___ U6 5 TfI l Ci E1l SOURCE SE r E Toa _NO p UTO A MPl l Ie PEAte OUECTCla OUT 14 Z78S 201 RE V E P 1 381 PA IlTI4L 52 0 c IF Il J 0 1 G jo PA lTIA L AI INTERFAC E 0 TRI ER fNERATOR ...

Page 109: ... 7887 A 2 fI f B 3 4 A B c D E F G Figure 8 4 A1 tnterflcfI circuit board assembly ...

Page 110: ...35J 2 Pl else 4 C418 40 P3 C432 40 P8 C440 3C PlO C44 30 P2l0 C5ll 2E P2l0 C5ll 0 P410 C626 2E P705 C57l 10 P8l0 C578 0 palO C7 12 2 e7l0 3 0201 e7l1 2G 0202 calC 3C 0203 C820 0204 call 0 020 calO 3 0210 C840 3 021 ca4 2J 0230 C4 206 3 0234 C4301 3E 0242 e R20l 4 0272 k CRl08 3 0274 CR20e 3 030 CRll4 3J 031 4 CR225 3 1 0322 CRllS 3 1 0324 2788 12C CRl7l 0 0334 CR301 3E 0338 CR302 3F 034 CRl 2G 034...

Page 111: ...R427 3C R744 5H C712 2H R227 4K R428 3C R745 5G C730 3H 0201 4K R228 3J R430 4D R746 5G C731 2G 0202 4K R231 4K R431 3D R747 5G C810 3C 0203 5J R232 4K R432 4D R748 5G C820 38 0204 3K R233 4K R433 4C R749 5F C822 5D 0206 4K R234 5K R434 4D R803 18 C830 38 0210 21 R240 3K R435 28 R806 18 C840 38 0214 21 R241 3K R436 4C R821 58 C844 2J 0230 4J R242 3K R437 4C R832 2J C4206 3K 0234 4K R243 3K R438 4C...

Page 112: ...ditions The IOltages shown on the diagram were obtamed USing a digital mult meler with a 10 MO Inpul lmpedance Tekt ron OM 501 D gl1al Muh meler or TeklrOnu 701 J D g lal Multlmel er used with readout eqUipped 7DOD senes oscilloscope Waveform Conditions The waveforms stlown Delow were obtamed usmg a test oscilloscope system with 10 MO Input Impedance and at least 60 MHz bandw dth Teki ronll 7603 O...

Page 113: ...en I _ J AUTO 10 H C 11 ellS INPuT IN Ltwr o rl CN1 0 O o0 ____ ______________ o J 0 230 131 r IOf _ 4 1 REStT CjZ 1 l4 TIMiNGt I RfSc r jZ l l4 STAIiT 1 AUTO Ii CQ D MODE J4 4 t 4 ___ _ __ _ _____ ___ _ _ 3 MF SOV C212 CMD DE LAY MODe 7B87 0047 U22 0 R21S 2 AUTO IU F AUTO OUAY 00 r i j LD OFF 5 E P C ONTROL 1 o o SoV 1 104 3 jc 20S 470 __ T I DISABLE 200 V 5V 4P OI5 J f r 7f t elll 200 LOCKOUT C3...

Page 114: ..._________________________________________________ Iy __ ____________ DSll0 SV Sy I P 2 1 P 25 II I AOVJ ________________________________________________________ I lXO I O ____________________ 3 os L J SV l5 Q134 P 1 4 L wi r l __________________ Jj _ SIN aLE 5 E P RUDY INDICMO l _0 ___ 1 v__ HO D OFF Rl1S 51 PAj UIAL AI INTEci FAC i eo 2788 202 REV OCT 84 LOGIC o G 5 ...

Page 115: ...ram were obla ned us rog a dlg al multlmeter wllh a 10 MO nllut Impedance iTek1rom OM 501 O g tal Mull mcte o Tf ktron x 7013 Dlgl1al Multlmeler usedwl1h readout eQUIpped 70fX serres osc lIoscope Waveform Corodilions The wavelorms shown betow were obta ned us rog a teSt oSCilloscope system With 10 MO onput Impedance and at least 60 MHz barodwldth iTek1rom 7603 Oscilloscope 7B53A TIme Base and 7A 1...

Page 116: ...i CAL 1 1 p Il LAI NTill eo Jel V I I O T A U D O UT D ______ l i I SOV Y i sv SWEEP STAIlT c ATE I OM 1 l Jl00 5 1 1 1 1 I V 011 115 11 _I V SWEEP RAM TO Rt 11 IISY I P410 Ipo oool C P4d I R OA f Mr 10k 2788 203 REV SE P 1981 ...

Page 117: ... 2788 203 WEEP RAMP 11TO TO J100 I e 11 4 1 10 Ir v REV SE P I SI SOy 0 0 16V _lliY _lIS 1 01 ID Q4 8 4SC3 2 10 V r A 3 A io C r P L B 6 EEP 4 Alt Ia NAl h t I H AI2 C ND I V Sit 0 I4 1 I lA L I SIAIEEP GENERATOR Cl m ZCII m E Om m O tl 0 ...

Page 118: ... j 5U556 CAS7S CR691 fR 6Q U653 U65 R612 CR69 f 0695 6 s 691 i A69 1 69 TP645 TP673 J700 OP64v I I c U651 U635 U652 0661 0678 1 AS7 R667 R669 I D E F RS2 h 00 A j J600 Figure 8 5 A4 Clock Circuit board assembly G J500 I REV AUG 1985 ...

Page 119: ...2 J OO SO RS53 J64l SG RSS4 J700 SA RS5S L6 3A RS56 RS57 L R626 R556 R559 L R631 4 R58l L R634 R582 S Pertl L ilt for leriat number ranges GRID COORD I 2 3 lH H H 2H SG SH 3C C C C F OF F S 10 3 IF I IH IH 3G 2G 3G G H H IH IH G 2G 2 2G 3F 2G IG G 3 2A I 3 3 L ocated on back of board CK GRID CK GRID NO COORD NO COORD R591 1A U535 2G R60G 0 U545 2H R 07 U547 2G R608 3 U556 RS11 3 US AS21 3 U821 RB2...

Page 120: ...clockwise Voltage Condition The voltages shown on the diagram were obtained uSing a digital multlmeter with a I MO InpUllmpedance TeklrOnl OM 501 O gllal Multimeter or Tektron 7013 0 91tal Mulhmeter used w th readout equpped 7000 seroes osc lIoscope Waveform Conditions The waveforms shown below were obtamed us ng a test oscilloscope system With 10 MO inpUllmpedance and at least 60 MHz bandw dth Te...

Page 121: ...ICKOFF RS O BIAS SI RS31 34 01 Q531 JIOO RS6 22k s Z A IS ATE _ Mr H FROM J200 40 50V RS44 42 0k R571 15k RS4S i 4 67 TS4 TS5 TSb T57 7887 PARTIAL AI INTERFACE BOARD JIOO SWP CALREFERENCE ____ r________ ___ r____ 5 O FROM CR117 CR11S 0 1 S mS s TiMEZOiVJ PARTIAL S800 RS47 10 01 CR 547 2788 2 4 6 U535B 14 58 547 I O MF REV AU6 1 5 ...

Page 122: ... 78 _ B l f R5n 11 578 3k 51 15Y 5V C5Sb 0 1 14 H U556 74LSOO DELAY ATE SV 5V R557 U535B 10k 16 RAMP 1 4 58 m _ 1 r F CONTROL ISV CRS47 U547 LnSI R546 DVM 51 ZERO l r IJIOO n_ b t 1 3 Rt 21 47k R623 47k 15V ISY ISV R5S I d q 1m i9 8__ _ 8 t0 ARATOR U556C 74L5oo 5Y RSBI 2k C583 boO U590 10 A II B 1 16 T54 4 11 J TS S S6 m 91 19 i _ 6 __________________ si Is T57 r 7 P 7 DATAJWJJIJ I_ _ _ _ _ _ Ii J...

Page 123: ... IANALOG NO UPPER AND LOWER TPb43 f RONT MOUNTING HOLE LOWER REAR I MOUNTING HOLE T_4 TTl NO EXT CLOCK 5V 5V 1 046 R u44 10k 10 r SHOWN IN INTERNAL r R6 6 I INTERNAL J li l l l j rIA Q S 6L K AQ R II H OOO T IplO PII l EXT AQR l dJ T510 PS PbS I I r I MAIN FRAME MODE INFO AI6 B7 MAIN F RAME CHANNEL SWITCH SI NAL DISPLAY B PARTiAL AI INTERFACE BOAR D 7B87 I II lie Q607y W _ TO P R608 ROO7 5 Ue Ok P...

Page 124: ...5 74LS B 74LSl31 I 74150 2 74LSISI 16 74LS3 lO 16 V 10 10 7 12 8 8 StatlcSensltlveDeVices See MdlntenanceSectlon CLOCK J700 TP673 AUX SWEEP ATE hvv l __ __ f 2 S5 FROM PI 1 PH PIO CHI ROW W v l ll f 72 ANALoc DATA B31 NAL 000 AQR NOTE SHOWN ALSO ON0 ____ _ t _k_________________t_ t J i j I DELAY MODE OUT I v TOQS 6 CR61Q CR 18 eRe77 ISV Re82 3 1511 0 94 IK 5V ISV 0687 R661 J ck R S8 20k J500 __ B2...

Page 125: ...t board assembly CK GRID CK GRID NO COORD NO COORD CRns R7S7 C CR761 2B R 61 CR752 2B R 63 CR753 2B R 64 CR754 2B Am 0 CR763 R772 0 CRn2 20 AnJ W CRn 20 Am 20 CR782 2D R Sl C CR783 2D R782 0 CR786 2 R783 0 CR786 2 R 84 C R785 R786 R787 C R725 R791 R S1 R792 R752 R793 R752 A79 R S3 R S4 5725 R755 C 00 C R756 C REV SEP 1981 ...

Page 126: ... on r E board assembly 2788 16 C T GRID NO COORD R7S7 e R 6 R763 INTEAf C R764 _ Rm m Rm m Rm m R779 20 A S l e Rm 0 R7S3 m R78 e R785 R786 A7S7 e R791 R792 R793 Rn 2 TRIGGER 5725 G S Iowtl 6Itr1s saoo e ISEP 1981 ...

Page 127: ...3 A l I I I I I I S I I ______ __ h ________ ______ ____ ______ ____ ___________ __ ______ 7 A O B2Il I 101 110 1 7 s 1 1 1 f r 0 10 s 1 I f 1 r r r 1 f i i r r r i f f i re r f U 10 10 f pS 1 I f 1 1 I r J r r i r r i r r r r I r r r f r r r I f r r 10 f r r f f r r PAlaTIAL A I NT IlF E O RO 7B87 i9 t Ii r f f r f r f r fi f r f f i i I J t i I 1 i J i I I I I I f r r r f f r I r r r r r r r 40 ...

Page 128: ... 11 11 19 51 19 I t t t t t t t l I I t I I t fj l t t I t I l I t I I t r t t t t l t t t l I t t l t t I I I t I t l I t r t t t t t t t I I I I I t t t t t t I I f I I I t I I I l t i t I I t t t l I l I I t t t l t I I t t t t t t t t I t I I t t t t I I t I tt t t l I t t t I t t t I I I I t I fe I I I I I I f i I I t I t t I I I I I I i t t I I I t t l I t l I t t I I I I I t fe t t t t t t ...

Page 129: ...1 C 9 h 1 1 1 8 V TO II L FROI1 J OO 5 511 PIlW I V FROM 8 CJ MAIN FRAME I TO P S C LE f r rc I 4FROM 2 lO I l Tlt ERIN Ue H T S c ohttotOH 14 1 _ 17 I I TPl6 1 1 D R803 15 8k P Q844 RJ 24 1t V f TO ND 12 0 l t 1 FRO 4 C N L II l AQS CLOCK AQR Ilm J A 10 FROM 11 2 340 1 r i I I fl T O P J 4 o q 1 7 8 lc I V 1 ssoo T2 c ua 8 O rh 1 W3 2 H INTIONSITV LIIIIIT 1 0 I 5 1 LINE TRI R 4 TO 1 S 1 A EEP r 1...

Page 130: ... 4 _ IB Io V POWE I 1 I l J 11 I I I TO C 2 2b ao IS I 14 I 13 I HI 2 FROM r I _ 4 I I I NC 7 10 FROM 1l i 1S I I TO Q 20 2 B I TO P8 2 1 I FROM J700 2 s I ROM R l r 4 I 1 4 3 t FROM QS 2 W J 500 1 I TO u220 13 r TOJ1 I IH LE SV jEEP RESET x v COMPENSATION DE LAY ATE SV4EEP LOC OUT MAIN FRAME CHANIllEl SWITCH SIG NAL DISPLAY B AUX SWEEP ATE HOLO OFI OUT DEI AY lo 100E IN COt lTROL INTERFACE CONNEC...

Page 131: ...TART R710 R715 R44 MAG REG 10 TIMING 10 ms TIMING _ J R430 MAG GAIN RSO SLOPE SAL e330 50 ns TIMING 1 0 R4 TRIGGER SENSITIVITY RB5 DC SAL 4 II 1 I 4 j I J I j t Figure 8 7 Test Point and Adjustment Loc REV SEP 1981 ...

Page 132: ... oint and Adjustment locations REV SEP 1981 I TP673 A2 TRIGGER GNo A TP627 R530 PICKOFF BIAS 7887 R538 SCALING R550 OVM ZERO 2788 22 ...

Page 133: ...st be purchased separately unless otherwise specified ITEM NAME In the Parts List an Item Name is separated from the description by a colon Because of space limitations an Item Name may sometimes appear as incomplete For further Item Name identification the U S Federal Cataloging Handbook H6 1 can be utilized where possible ABBREVIATIONS INCH ELCTRN ELECTRON IN INCH SE SINGLE END NUMBER SIZE ELEC ...

Page 134: ...ER RD 7100 LAMPSON AVE RICHARDS AVE 30 HUNTER LANE 15201 BURBANK BLVD SUITE C 550 HIGH ST 630 E LAMBERT RD POBOX 630 446 MORGAN ST 31 BROOK ST SAINT CHARLES RD ST CHARLES ROAO SHELTON CT 06484 GAROEN GROVE CA 92642 NORttALK CT 06852 CAMP HILL PA 17011 VAN NUYS CA 91411 BRADFORD PA 16701 BREA CA 92621 KATERBURY CT CINCINNATI OH 45206 EST HARTFORO CT 06110 ELG IN IL60120 ELGIN IL 60120 ALOES KOHINOO...

Page 135: ...0 AL ANOI 352 80009 358 0342 00 END ATTACHING PARTS 17 352 0157 00 2 LANPHOLOER 1 T 2 UNBASEO HITE 80009 352 0157 00 18 351 0469 00 2 GUIOE PUSH 8TN 4 8UTTON 80009 351 0469 00 19 351 0469 01 2 GUIOE PUSH BTN 3 8UTTON 80009 351 0469 01 20 2 CONN RCPT ELEC BNC FEMALE SEE J2 J640 REPL 21 348 0235 00 2 SHLO GSKT ELEK FINGER TYPE 4 734 L 92101 ORDER BY OESCR 22 1 RESISTOR VAR SEE R705 REPL 23 129 0290 ...

Page 136: ... 00 X0 225 L 24546 OMA 07 65 337 2671 00 8010100 8010575 1 SHIELO ELEC CLOCK 80009 337 2671 00 337 2671 01 8010576 1 SHIELO ELEC CLOCK 80009 337 2671 01 66 366 1559 00 1 PUSH 8UTTON SIL GY 0 18 SO X0 43 80009 366 1559 00 67 1 CKT 80ARD ASSY TRIGGER SEE A2 REPL ATTACHING PARTS 68 211 0008 00 2 SCREM MACHINE 4 40 X0 25 PNH STL 93907 ORDER 8Y OESCR END ATTACHING PARTS CKT 80ARO ASSY INCLUDES 69 S ITC...

Page 137: ... PLAIN HEX 4 40 X0 188 BRS CO PL 73743 12161 50 END ATTACHING PARTS 102 CKT BOARD ASSY READOUT SEE A3 REPL ATTACHING PARTS 103 211 0008 00 1 SCREN NACHINE 4 40 X0 25 PNH STL 93907 ORDER BY DESCR 104 211 0244 00 B010100 B010670 7 SCR ASSEM NSHR 4 40 X0 312 PNH STL 01536 ORDER BY DESCR 211 0292 00 B010671 7 SCR ASSEM NSHR 4 40 X0 29 PNH DRS 78189 51 040445 01 END ATTACHING PARTS CKT BOARO ASSY INCLU...

Page 138: ... IN ELEK MICROCKT S CONTACT 09922 0ILBSP 10S 142 136 0263 04 35 SOCKET PIN TERM U W 0 025 SO PIN 22526 75377 001 143 131 0604 00 32 CONTACT ELEC CKT BD SW SPR CU BE SOO09 131 0604 00 144 214 0579 00 5 TERM TEST POINT SOO09 214 0579 00 145 136 0252 07 B010100 B011049 137 SOCKET PIN CONN W O DIMPLE 22526 75060 012 136 0252 07 B011050 134 SOCKET PIN CONN W O DIMPLE 22526 75060 012 146 131 0566 00 4 B...

Page 139: ... CONN 2 MIRE BLACK 80009 352 0169 00 168 352 0161 00 1 HLOR TERM CONN 3 MIRE 8LACK 80009 352 0161 00 352 0161 05 1 HLOR TERM CONN 3 MIRE GREEN 80009 352 0161 05 352 0161 07 1 HLOR TERM CONN 3 MIRE VIOLET 80009 352 0161 07 169 352 0162 00 1 HLOR TERM CONN 4 MIRE BLACK 80009 352 0162 00 352 0162 04 1 HLOR TERM CONN 4 MIRE YELLOM 80009 352 0162 04 STANDARD ACCESSORIES 070 2788 00 1 MANUAL TECH INSTR ...

Page 140: ...156 t ...

Page 141: ... 7B87 TIME BASE m x o a m a ...

Page 142: ...d shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Since the change information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page your manual is cor...

Page 143: ...s are effective at serial number B023665 CHANGE TO A1 A1R227 DS220 REPLACEABLE ELECTRICAL PARTS LIST CHANGES 31S 0201 00 1S0 1078 00 CKT BOARD ASSY INTERFACE REPLACEABLE AS A UNIT WITH 672 0829 02 RES FXD FILM 2000HM S 0 2SW LT EMITTING DIO GREEN S6SNM 20MA DIAGRAM CHANGES SECTION 8 DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS LOGIC 0 Change R227 from 120 to 200 R227 is located in the center right por...

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