Tektronix 2445A Operator'S Manual Download

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Summary of Contents for 2445A

Page 1: ...WS SETUP yERTICAl 350MHl e lOC O SIIO O J fM al8 ON I8 ON QP NQ a MOOE SAV E CIII C H 2 C H 3 til 1 1 1 1 11 100 1I 6lD 6 0 0 0 I 6 11 J IT 0 6 5 6 J e I IIlHNl 1I l Uftll Al l 1 ti5 VOLTS DIV VOLTS DIV l SW SEC DIV IlWI a ai SlD 2 I 0 r o qu 6110 N O O SEP 8 POSfTlON Mn IMn 0 U o 50n DC son DC CH 1o CH 2 I CH 3 EADOUT INTENSOTT se ILLUM OWE IMn 1 5 f 4 Ilav IMO 15 5400 1 iM01S f 400V INTENSITY fO...

Page 2: ...ORS MANUAL 070 6014 00 Product Group 38 2465A 2455A 2445A OSCILLOSCOPES and OPTIONS First Printing JUN 1986 Revised FEB 1987 Please Check for CHANGE INFORMA TION at the Rear of This Manual COYMTTED TO EXCEu ENCE ...

Page 3: ...price change privileges are reserved INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a panel 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 manufact...

Page 4: ...erman Postal Service has the right to re test the series and to verify that it complies TEKTRONIX Bescheinigung des Herstellers lmporteurs Hiermit wird bescheinigt daB der die das __2_4_6_5A _2_4_55_A _2_44_5_A__ OSCILLOSCOPES AND ALL INSTALLED OPTIONS in Ubereinstimmung mit den Bestimmungen der Amtsblatt Verfugung 1046 1984 funkentstort ist Der Deutschen Bundespost wurde das Inverkehrbringen dies...

Page 5: ...s Gerst eingesetzt wird muB ebenfalls den Voraussetzungen nach Par 2 Ziff 1 der Vfg 1046 1984 genugen NOTICE to the user operator The German Postal Service requires that this eqUipment when used in a test setup may only be operated if the requirements of Postal Regulation Vfg 1046 1984 Par 2 Sect 1 7 1 are complied with HINWEIS fUr den Benutzer Betreiber Dies Gerat dart in MeBaufbauten nur betrieb...

Page 6: ...ggering 2 6 Readout 2 8 Measurements with Cursors 2 10 Display Operation 2 12 Signal Connections 2 12 Magnify Waveform Details with Delayed Sweep 2 13 B Trigger Operation 2 14 Delta Delay Time 2 15 Single Delay Time Measurements 2 16 Precision Timing 2 17 Triggered Delta Delay Time Measurements 2 18 Time Interval Resolution 2 20 Measurement Updating 2 20 Frequency Period and Totalize Counting 2 22...

Page 7: ...Period and Frequency 3 6 Rise Time and Fall Time 3 7 Propagation Delay 3 8 Setup and Hold Times 3 8 Slew Rate 3 9 Time Ratio 3 1 0 Phase Difference Between Two Signals 3 11 4 Checks and Adjustments Introduction 4 1 Initial Setup 4 1 Trace Rotation and Adjustment 4 1 Astigmatism Adjustment 4 2 Auto DC Balance Routine 4 2 Probe Compensation 4 3 Matching Channel 2 Delay 4 4 Amplitude Check 4 5 Timing...

Page 8: ...s 7 4 A AppendixA Extended Functions with Diagnostic Exercisers A 1 8 AppendixB Sequence Programming and Operation B 1 Executing Sequences B 3 C AppendixC Power Up Tests C 1 Kernel Test C 1 Confidence Tests C 1 o AppendixD Delta Time and Delta Delay Time Accuracy under Noted Conditions for the CITIT Option 0 1 Delay Time Accuracy under Noted Conditions for the CITIT Option 0 2 2465A 2455A 2445A Op...

Page 9: ...gnals 3 11 3 7 Small angle phase difference 3 11 4 1 Probe low frequency compensation 4 3 5 1 Power and display controls 5 3 5 2 SETUP and MODE buttons and CH 1 and CH 2 POSITION controls 5 5 5 3 Channel 1 and Channel 2 controls and connectors 5 7 5 4 CH 3 and CH 4 controls and connectors and CALIBRATOR output 5 9 5 5 Horizontal and delta measurement controls 5 11 5 6 Trigger controls and indicato...

Page 10: ...cteristics 6 6 6 2 Option 01 DMM Electrical Characteristics 6 15 6 3 Option 05 TV Electrical Characteristics 6 22 6 4 Option 06 C T T Electrical Characteristics 6 24 6 5 Option 09 WR Electrical Characteristics 6 31 6 6 Option 10 GPIB Electrical Characteristics 6 33 6 7 Mechanical Characteristics 6 34 6 8 Environmental Requirements 6 36 C 1 Confidence Test Numbers and Affected Functions C 2 2465A12...

Page 11: ...itions or practices that could result in personal injury or loss of life As Marked on Equipment CAUTION indicates a personal injury hazard not immediately accessible as one reads the markings or a hazard to property including the equipment itself DANGER indicates a personal injury hazard immediately accessible as one reads the marking Symbols vi In This Manual This symbol indicates where applicabl...

Page 12: ...pon loss of the protective ground connection all accessible conductive parts including knobs and controls that may appear to be insulating can render an electric shock Use the Proper Power Cord Use only the power cord and connector specified for your product Use only a power cord that is in good condition For detailed information on power cords and connectors see Table 1 1 Use the Proper Fuse To a...

Page 13: ...viii 2465A 2455A 2445A Operators ...

Page 14: ...cluding the extended function options Setups can be recalled either immediately or sequentially Digital readouts of time voltage scale factors trigger levels and auxiliary information also save time and reduce errors With the available Counter Timer Trigger CIT Option 06 or Option 09 measurements require even less effort and give better accuracy The CIT increases trigger selectivity especially in ...

Page 15: ...SECTION 1 General Information G e r n 1 l I 0 0 0 e 2465A 2455N2445A Operators ...

Page 16: ...he LINE VOLTAGE SELECTOR switch located on the rear panel see Figure 1 1 is set correctly see Table 1 1 and that the line fuse is correct To convert the instrument for operation on the other line voltage range move the LINE VOLTAGE SELECTOR switch to the correct nominal ac source voltage setting The detachable power cord may have to be replaced to match the particular power source Line Fuse To ver...

Page 17: ...220V 230V 230V ANSI C73 20 NEMA 6 15 P IEC 83 UL 198 6 SEV IEC 127 aA 6A type C fuse is also installed inside the plug of the Option A2 power cord bReference Standards Abbreviations 1 2 ANSI American National Standards Institute AS Standards Association of Australia BS British Standards Institution CEE International Commission on Rules for the Approval of Electrical Equipment IEC International Ele...

Page 18: ...ective ground contact on the plug connects through the power cord to the external metal parts of the instrument For electrical shock protection insert this plug into a power source outlet that has a properly grounded protective ground contact Instruments are shipped with the required power cord as ordered by the customer Available power cord information is presented in Table 1 1 and part numbers a...

Page 19: ...ilure of any of the power up tests will be indicated by either a flashing TRIG O indicator on the instrument front panel or a bottom line readout on the CRT in the form TEST XX FAIL VV where XX is the test number and YY is the failure code of the failed test If a failure of any power up test occurs the instrument may still be usable for some applications To operate the instrument after a power up ...

Page 20: ...tronix Service Center for service or repair attach a tag to the instrument showing the following owner of the instrument with address the name of a person at your firm who can be contacted complete instrument type and serial number and a description of the service required 3 Wrap the instrument with polyethylene sheeting or equivalent to protect the outside finish and prevent entry of packing mate...

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Page 22: ...Operation SECTION 2 o o Q Q 2465A12455A12445A Operators ...

Page 23: ...xtinguish it 4 If the resulting display isn t exactly what you want adjust the appropriate VOLTS DIV SEC DIV POSITION or Trigger controls Characteristics of AUTO Setup With one channel Auto Setup centers the a volt level and makes the vertical display as large as possible within the graticule With more than one channel the a volt levels of CH 1 CH 2 CH 3 and CH 4 are set at 2 0 2 and 3 divisions f...

Page 24: ...ive probes A low impedance probe can present less than 2 pF load to the signal source in parallel with 500 0 or 5000 0 with 10X or 100X attenuation Input Conditioning for Video Signals Video signals can be distorted by ac coupling or by low frequency interference The available Television Video TV enhancement adds a TV CLAMP to the CH 2 input to eliminate such distortion To use the TV clamp 1 Apply...

Page 25: ...ings should be equal Choosing CHOP or ALT With two or more channels the display is time shared Chop mode displays each channel for a short time and multiplexes during the sweep to give the appearance of displaying all channels at once Chop works better than Alt for sweeps slower than 1 ms division and for low repetition rate signals that make the display flicker up to 21 s division Alt mode displa...

Page 26: ... Mode Vert Source DC Coupling and MINimum Holdoff 2 4 Auto Lvi mode with LEVEL in the center half of its range sets the trigger pOint near the midpoint between signal peaks When LEVEL is set to the or end of its range this mode initiates triggering near the 10 or 90 point between signal peaks You can select a level anywhere in about the middle 80 of the signal amplitude Once set the level doesn t ...

Page 27: ...he event Periodically check to see if READY is on If a burst of trigger events occurs the sweep runs once for each trace displayed and READY extinguishes Trigger Source Choose a single trigger source to correctly display the timing relationships among multiple channels Choose the channel with the lowest frequency signal to avoid ambiguous displays With Vert trigger source Auto Lvi trigger mode or ...

Page 28: ...LDOFF setting can improve display stability Also if the signal has a fixed pattern of variation from cycle to cycle some modes of the signal may be omitted from the display Changing the Holdoff setting can force the instrument to display all the modes of the signal Normally HOLDOFF should be set at MIN Video Triggering The available Television Video TV enhancement adds TV LINES FLD1 and FLD2 Coupl...

Page 29: ...upling 3 The CH 1 display triggers on field 1 and the CH 2 display triggers on field 2 TV Lines trigger coupling with multiple vertical channels Alt Vertical mode and Vert Trigger source produces unpredictable results A t symbol with the line number display shows when the t FLD LINE control can change the line number If t V t t or 1 M is on press a trigger Coupling button to redirect the control t...

Page 30: ...hich is available with the CTT the readout shows the defined word Readout Intensity To display nothing but measurements set the READOUT INTENSITY control counterclockwise from OFF SCALE FACTORS OFF Rotate the control toward OFF to decrease readout brightness When the sweep is faster than 50 ILs division random 2 ILs segments of the waveform may be missing Set the control near the center of the wor...

Page 31: ... are always calibrated combining the effects of SEC DIV VAR and X10 MAG If SEC DIV VAR is not at its clockwise setting the time scale factor includes a decimal point Holdoff Indicator The holdoff indicator HO is displayed when the HOLDOFF control is not at minimum Probe Effects Probe attenuation effects are included in scale factors trigger levels and delta volts readouts if you use the standard a...

Page 32: ...t divisions of waveform amplitude For best t and 1 t accuracy use the fastest sweep that will include the interval of interest Measure Voltage 1 Turn on the V cursors and readout with the V button 2 Align the cursors with pOints of interest such as waveform peaks using the REF and knobs 3 The readout shows the voltage between the pOints marked by the cursors 4 Press V to turn off the V cursors and...

Page 33: ...erence and compare others to it For phase set one cycle which is the 360 degree reference to five divisions 3 Press V to measure vOltage ratio At for time ratio or V and At together for phase The VAR must be counterclockwise from the detent position to turn on the RATIO or PHASE readout 4 Turn REF and to align the cursors with the portion of the waveform to be compared to the reference portion Pha...

Page 34: ...probe input capacitance can interact with the inductance of either a long signal lead or a long ground lead to form a series resonant circuit This circuit can affect system bandwidth and can ring if driven by a fast step Always keep both the ground lead and the probe signal input connections as short as possible to maintain the best waveform fidelity In some cases a separate ground from the unit u...

Page 35: ... DLY If an A Trigger Mode indicator is on the B Trigger has been set previously to RUN AFT DLY 3 Set REF OR DLY POS to place the small intensified zone at a point of interest This zone may be more apparent with a lower Intensity setting If the A Sweep terminates just after the intensified zone you can move the HOLDOFF control and set it at MIN Two intensified zones appear if you have selected t or...

Page 36: ...IG AFT DLY the actual delay time is controlled by the signal as enabled by the A Sweep and the d REF and d settings Setting the B Trigger 1 When the B SWP indicator is on press A B TRIG A B MENU with CT7 to illuminate a B Trigger Mode indicator If B Trigger mode is not RUN AFT DLY a B Trigger Mode indicator will be on when the B SWP indicator is on 2 Select TRIG AFT DLY Mode 3 Set SOURCE COUPLING ...

Page 37: ...rigger Mode indicator is on the 8 Trigger has been set previously to RUN AFT DLY 4 Select l1t or 1 l1t while the SEC DIV knob is out 5 Adjust l1 REF OR DLY POS and l1 to place the pair of intensified zones at the beginning and end of the interval of interest If the A Sweep terminates just after the intensified zones you can move the HOLDOFF control and set it at MIN 6 Turn SEC DIV clockwise with t...

Page 38: ...start of B Sweep Compared to delta delay time measurements some accuracy will be lost unless you can take the difference between one delay time and another 1 Display the time interval with the A Sweep running as fast as possible unmagnified If the interval is a propagation delay or other two signal measurement apply the signals to CH 1 and CH 2 For maximum display repetition rate display only the ...

Page 39: ...ts direct measurements produces an indirect reading until a new direct measurement is complete Direct counted measurements may be different from indirect SET measurements for any of the following reasons 1 Direct measurements are more accurate and show more digits of resolution 2 When B Sweep is triggered both the waveform display and the direct measurement respond to the signal Indirect measureme...

Page 40: ...t TRIG AFT DLY B Sweep runs at the first trigger after the set delay With Llt or 1 Llt TRIG AFT DLY and TRIG A DLY both indicators on SLOPE and LEVEL settings for triggering at A REF delay and A delay are common TRIG A DLY SLOPE and LEVEL for A delay can be set independent of the setting for A REF delay TRIG AFT DLY SLOPE and LEVEL for A REF can be set independent of the setting for A delay TRIG A...

Page 41: ...more than one signal is displayed either deselect the other signals or set Source to the appropriate channel 5 Set B Trigger Coupling to DC For unusual applications other couplings may be preferred 6 Press INIT 50 If necessary adjust LEVEL for the desired trigger threshold 7 Select TRIG AFT DLY Mode and repeat step 6 For the special case noted in step 3 skip this step 8 If required readjust A REF ...

Page 42: ... COUNT DLY EVTS LOGIC TRIG RES 2 Turn either MENU SELECT to position the cursor under RES 3 Push the upper Trigger MODE button to display the Time Resolution Menu RESOLUTION AUTO 1ns 100ps 10ps 4 Turn either MENU SELECT to select the desired resolution 5 Push the upper Trigger MODE button to store the selected resolution Measurement Updating AUTO updates the measurement either every 1 2 second or ...

Page 43: ... 1 Resolution Selections Selection Least Digit AUTO See Table 2 2 10 ps 10 ps 100 ps 100 ps 1 ns 1 ns 10 ps or 100 ps 100 ps 1 ns 1 ns 10 ps to 1 ns 1 ns Any 10 ns Any 100 ns Any 1 IJ S Table 2 2 Auto Resolution Trigger Rate Least Digit 20 kHz 100 ps 200 Hz to 20 kHz 1 ns 200 Hz 1 ns 200 Hz 10 ns Any 10 ns Any 100 ns Any 1 IJ S 2465A 2455A 2445A Operators Operation N for Average See Table 2 2 106 ...

Page 44: ...EQ PERIOD TOT EVT A TRIG b With the available Word Recognizer WR MODE FREQ PERIOD TOT EVT A WR 4 Select the desired count Mode a Without the WR Turn Right MENU SELECT to FREQ or PERIOD b With the WR 1 Turn Left MENU SELECT to underline MODE 2 Turn Right MENU SELECT to FREQ or PERIOD 3 Turn Left MENU SELECT to EVT 4 Turn Right MENU SELECT to A A Trigger or WR Word Recognizer the source of counting ...

Page 45: ... Recognizer active Selecting either LINE Source or SGL SEQ Mode cancels any counting measurement Delay Sweeps by Event Counts The available Counter Timer Trigger CIT menu includes delay by events for either the A Sweep or the B Sweep Event counting begins at a starting event on a vertical input defined by the A Trigger Delay counting events are defined by the B Trigger In addition the available Wo...

Page 46: ...Events Combinations with Word Recognizer A A Trigger Word Delay begins at the A Trigger then Recognizer A Sweep runs after the selected number of words are recognized B A Trigger Word Delay begins when the A Sweep is Recognizer triggered by the A Trigger event then B Sweep runs after the selected number of words are recognized if the A Sweep has not terminated A Word B Trigger Delay begins when a ...

Page 47: ...Left MENU SELECT to select A or B the sweep to delay b With the WR 1 Turn Right MENU SELECT to select SWP START or DLY BY 2 At SWP turn Right MENU SELECT to select A or B the sweep to delay At START turn Right MENU SELECT to select A for a start event defined by the A Trigger or WR for a start event defined by the Word Recognizer At DLY BY turn Right MENU SELECT to select B for delaying events def...

Page 48: ...eft MENU SELECT to underline the most significant digit of the number 2 Turn Right MENU SELECT counterclockwise until all digits are O Decrementing the most significant digit when it is 0 or incrementing a digit when it and higher order digits are at maximum moves the underline cursor to the right Changing Trigger Settings 2 26 To change trigger settings select the desired trigger by pushing A B M...

Page 49: ...first event select B Sweep Delayed by Events pull SEC DIV out to display the intensified A Sweep and set the event count to 1 The intensified zone will show which event is counted first Cancelling Menu Functions To cancel any function selected through the menu press the A B MENU button to light the MENU indicator then press the lower Trigger MODE button When a menu is displayed you can either pres...

Page 50: ...C TRIG 3 Push the upper Trigger MODE button to display the Logic Trigger Menu a Without the WR TRIG A SWEEP BY A B A B b The WR adds two functions and changes the menu SWP TRIG A A B A A B A WR B WR 4 Turn either MENU SELECT to select the sweep to trigger and the logic function to trigger it 5 Push the upper Trigger MODE button to activate the trigger The readout will show which of the A B trigger...

Page 51: ...g When AND of A and B Triggers A A B FALSE to TRUE changes from OR of A and B Triggers A A B changes from FALSE to TRUE Word Recognizer detects the selected word Word Recognizer detects the selected word Cancelling Menu Functions To cancel any function selected through the menu press the A B MENU button to light the MENU indicator then press the lower Trigger MODE button When a menu is displayed y...

Page 52: ...ify the desired pattern During operation of the function driven by the WR the WR status is displayed in this format seq word where the Us character indicates the affected sweep A or B CO is the clock mode r t or X q is the qualifier bit 0 1 or X and word is a 16 bit pattern in the selected radix a Turn Left MENU SELECT to the clock mode character the qualifier bit or a digit of the word b Turn Rig...

Page 53: ...ar panel The output is TTL high when the selected word is recognized The most recent word definition controls the signal whether or not the function that invoked the WR is active The timing of the word occurrence relative to other signals can be observed by connecting the WORD OUT signal to one vertical channel and using the remaining vertical channels for the other signals Propagation delay of wo...

Page 54: ...SAVE The readout will indicate the Direct Save mode Top Row Cursor Bottom Row SAVE 1 8 DIRECTLY NAME xxxxxxx PUSH ANY OF 1 8 TO SAVE SETUP If the Direct Save mode displays SAVE FUNCTIONS DISABLED refer to EXER 07 described in Appendix A 3 If you want a new name for the setup turn to define the first character then turn REF to select and to define each additional character up to seven A small curso...

Page 55: ...g STEP AUTO This does not establish the Step mode RECALL a Sequence 1 Press RECALL The readout will indicate the Direct Recall mode by showing the user defined menu of the first eight setups 2 Press STEP The readout will show the name of the beginning step of the first sequence and the names of additional sequences up to four 3 Press the setup number button 1 through 4 that occupies the same posit...

Page 56: ... earlier If the indicator is on AUTO STEP sequentially recalls setups If the STEP indicator is on press SAVE or RECALL to extinguish it A switch closure or TTL low signal connected to the STEP AUTO EXT SWITCH connector on the rear panel has the same effect as pushing the STEP AUTO button REV JAN 1987 2465A12455A12445A Operators ...

Page 57: ...SECTION 3 Applications 2465N2455N2445A Operators ...

Page 58: ...sition the waveform as desired for convenient viewing with VOLTS DIV VAR fully clockwise and with VOLTS DIV set for the largest usable display amplitude 2 Momentarily switch Input Coupling to GND and align the REF cursor with the trace 3 Switch Input Coupling to DC and set the cursor to the point of interest DELTA CURSOR I Al 0 0 V AVl Jo I J I 90 I or INSTANTAN EOUS VOLTAGE LEVEL 8 05V Yl d tr J ...

Page 59: ...h to verify the operation of a power supply trace power supply distribution or verify the state of a control system 1 Display either CH 1 or CH 2 and connect it to the voltage 2 Push AUTO Setup and read the voltage in the trigger level readout For voltages in the same range simply touch the probe to the voltage For best accuracy set VOLTS DIV so the measured voltage is five to fifteen divisions Am...

Page 60: ...at 0 2 times the period using the switch and VAR The display will show one cycle in five horizontal divisions If the DLY setting is less than 200 ns turn REF to zero DLY then turn REF to move ten cycles past a point in the display 5 Align t cursors with the deviation extremes 6 Divide the reading by 10 to determine the peak to peak deviation in percent For modulation index from 0 01 to 0 2 proceed...

Page 61: ...des of a multi mode waveform by changing the setting of Trigger HOLDOFF so the modes are superimposed in the display 2 CHOP Vertical Mode often will superimpose the multiple modes of waveforms in multi channel displays Algebraic Addition to Detect Coincidence or Cancel Interference 3 4 With the Add Vertical mode the waveform is the algebraic sum of the signals applied to Channel 1 and Channel 2 If...

Page 62: ...d Source 4 Now you can observe and measure coincidence durations and other time intervals Channels 3 and 4 can show relationships to other signals Measuring Off Ground Signals And Cancelling Interference The Add mode can measure voltage between a pair of pOints where neither point is ground The technique can cancel interfering signals or uninteresting components of a signal through common mode rej...

Page 63: ...SIGNAL 3832 15 5854 13 Figure 3 2 Eliminating common mode signals Period and Frequency 3 6 1 Set SEC DIV and if necessary X10 MAG to spread one cycle over as wide a span as possible 2 Turn on t t or 1 t t and align the cursors with identical fast slewing points on consecutive cycles such as zero crossings With the available Counter Timer Trigger CIT you can measure period and frequency more accura...

Page 64: ...tom of the waveform with the 0 graticule line and the top with the 100 line 2 Set Trigger SLOPE to for rise time or to for fall time 3 Set SEC DIV and if necessary X10 MAG to spread the transition over as wide a span as possible 4 Turn on Llt and align the cursors with the points where the transition intersects the 10 and 90 graticule lines For best accuracy observe the considerations given in the...

Page 65: ... POSITION to align the trace with the D REF cursor the one with dots e Select DC vertical input coupling 4 Set SEC DIVas fast as possible while containing the measured time on screen Use X10 MAG if needed 5 Turn on D t and align the cursors with the intersections of the waveforms with the chosen graticule lines For best accuracy observe the considerations in the Signal Connection parts of the Oper...

Page 66: ...on 2 Activate 1 tlt and set the cursors to intersect the signal slope at paints that are separated by one volt or by a power of ten multiple or fraction of one volt 3 Interpret the frequency Hz readout as volts second instead of cycles second Hz Multiply the result by the power of ten multiple of one volt between the cursors For example if the cursors intersect the waveform at paints separated by ...

Page 67: ... portion of the pulse you are measuring is less than 1 division wide 20 you can improve the accuracy of the measurement Activate the X1 0 MAG without changing SEC DIV or VAR and align the cursors with the magnified pulse The RATIO reading will be 10 times the actual ratio The CRT readout displays the ratiO in percent between the separation of the two cursors and the five division reference interva...

Page 68: ...rom the CRT readout If the phase shift is less than 1 horizontal division 72 degrees you can improve the accuracy of the measurement Use the X10 MAGnifier without changing SEC DIV or VAR to expand the display align the cursors with the zero crossings and divide the PHASE readout by 10 see Figure 3 7 Measuring Millivolt Signals With the standard 1OX attenuation probes deflection factors range down ...

Page 69: ...SIGNAL Figure 3 6 Phase difference between two signals DIVIDE BY 10 L DEG REFERENCE I CURSOR r _ 1 100 I L __ 10Lo __ mLV __ L2_0 OLm v__ _ L __ DELTA CURSOR Figure 3 7 Small angle phase difference 3832 19 5854 17 3832 20 5854 18 2465A 2455A 2445A Operators ...

Page 70: ...SECTION 4 Checks and Adjustments 2465N2455N2445A Operators ...

Page 71: ...input with a standard accessory probe and ground the probe near the Calibrator output 4 Press the AUTO Setup button to obtain a display If the STEP indicator is illuminated press RECALL to cancel the Step mode then press AUTO to obtain a display Adjust the INTENSITY and READOUT INTENSITY controls as desired Set the FOCUS control for the best trace definition Trace Rotation and Adjustment 1 Preset ...

Page 72: ...utine 4 2 The oscilloscope can automatically dc balance Channel 1 and Channel 2 This routine minimizes trace shifts when adjusting the VOLTS DIV and VOLTS DIV VAR controls and when switching Channel 2 between noninverted and inverted This dc balance remains valid as long as the instrument is operating within 5 C of the ambient temperature at which the routine was performed provided the instrument ...

Page 73: ...ed in Initial Setup 2 Set the SEC DIV control to 1 ms and 20 MHz BW LIMIT on If the probe to be compensated is connected to CH 2 enable the Channel 2 display Set the appropriate VOLTS DIV control to 100 mV 3 Connect the probe to the CALIBRATOR output 4 Check the waveform for overshoot and rolloff see Figure 4 1 If necessary adjust the probe for a square front corner on the waveform using the small...

Page 74: ...or output 4 Select both CH 1 and CH 2 Vertical mode displays 5 Press AUTO Setup to obtain a display 6 Set the CH 1 and CH 2 VOLTS mV and POSITION controls for 3 to 6 divisions of amplitude and superimposed displays 7 Set SEC DIV to 5 ns 8 Pull out the SEC DIV knob and observe the message CH 2 DELAY TURN A in the upper right hand corner of the screen NOTE If the message CH 2 DLY DISABLED appears in...

Page 75: ...the center horizontal graticule line for all A SEC DIV settings from 100 ms to 100 ns Confirm that 2 cycles of the Calibrator signal cover 8 divisions at 50 ns div and that 1 cycle covers 10 divisions at 20 ns div Observe that the displayed transition time of the signal remains approximately the same when A SEC DIV is changed to 10 ns and 5 ns The number of horizontal divisions covered by the tran...

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Page 77: ... SECTION Controls Connectors and Indicators 5 2465AJ2455AJ2445A Operators ...

Page 78: ...rol Adjusts the brightness of the waveform Limits the CRT deflection both vertically and horizontally to within the graticule Display intensity is not affected by the BEAM FIND button Adjusts the CRT writing beam for optimum display definition Aligns the no signal trace with the horizontal graticule lines Relocating the instrument to a different magnetic ambient may result in slight misalignment o...

Page 79: ...t Adjusts the level of graticule illumination Turns instrument power on and off Press in for ON press again for OFF An indicator in the switch shows green when the switch is on and black when it is off Front panel settings are returned when power is reapplied to the instrument unless saved setup number 1 is selected by EXER 06 described in Appendix A Has a 80 mm vertical by 100 mm horizontal displ...

Page 80: ...Controls Connectors and Indicators G II ie J tr niX 2 f 5A gii S U K R O __J 1 I II Figure 5 1 Power and display controls 2465A 2455A 2445A Operators 6014 02 5 3 ...

Page 81: ... For operational information see the Operation section and Appendix B Restores previous oscilloscope control settings saved in a numbered setup when followed by one of the setup number buttons Pushing the RECALL HELP button replaces the top and bottom rows of the normal readout with the user defined menu Repeated operation of the HELP button produces a cycle of help messages Additional setups are ...

Page 82: ... X V display vertically Select the indicated channel s for display Any combination of the five possible signal selections can be displayed by pressing the appropriate buttons The Channel 1 signal will be displayed if none of the displays are selected Each button has an associated indicator to show when the respective display or characteristic is active Pressing a button toggles the display or char...

Page 83: ...IV setting for the displayed sweep is in the range of 20 Its div to 2 Its div each channel is displayed for 400 ns Otherwise each channel is displayed for 1 its The chop switching rate is desynchronized from sweep repetitions to minimize waveform breaks when viewing repetitive signals When more than one channel is selected the vertical display switches sequentially through the selected channels Al...

Page 84: ... of items 18 through 21 6014 04 Figure 5 3 Channel 1 and Channel 2 controls and connectors_ VAR Controls Provide continuously variable uncalibrated deflection factors between the calibrated settings of the VOLTS DIV switches These controls vary the deflection factors from calibrated fully clockwise detent position to at least 2 5 times the calibrated deflection factor fully counterclockwise positi...

Page 85: ... less when using either a 1X probe or a coaxial cable and is 1 Hz or less when using a properly compensated 10X probe Only with the available Television Video TV enhancement the CH 2 input has a back porch clamp for composite video Signals When the input coupling is AC pressing the upper button activates the clamp and displays TVC in the readout The clamp locks the back porch feature of the video ...

Page 86: ...ing is selected input coupling will revert to 1 Mil GND and a CRT readout will indicate the overloaded condition Changing the input coupling of the affected channel removes the overload message Conduct external signals to the Channel 1 and Channel 2 vertical inputs A signal applied to the CH 1 OR X connector provides the horizontal deflection for an X Y display Each connector includes a coding rin...

Page 87: ...nt probes The repetition rate of the square wave changes with A Sweep SEC DIV changes From 100 ms per division to 100 ns per division the A Sweep of the instrument supplying the CALIBRATOR signal displays five cycles per 10 divisions At 100 ms per division and slower the CALIBRATOR frequency is 5 Hz at 100 ns per division and faster the frequency is 5 MHz The signal amplitude at 5 MHz is at least ...

Page 88: ...rotated continuously in either direction but further rotation has no effect when either extreme setting has been reached The A SWP and B SWP indicators show which sweep or sweeps are displayed When the A Sweep is displayed without the B Sweep SEC DIV selects 25 calibrated A Sweep speeds from 500 ms div to 5 ns div in a 1 2 5 sequence 24 steps to 10 ns div in the 2455A and 2445A Full counterclockwi...

Page 89: ...he Delta Volts function if it is active The A Sweep display intensifies during the 8 Sweep The 8 Sweep is not displayed but it runs either 100 times faster than the A Sweep or at 5 ns per division whichever is slower In Alt horizontal display mode setting 8 Sec Div equal to A Sec Div also selects the Intensified horizontal display mode With t or 1 t a pair of intensified zones appears With multipl...

Page 90: ... with the delayed B Sweep The position of the intensified zone on the A Sweep indicates the time position of the B Sweep and the length of the intensified zone indicates the B Sweep duration A separate B Sweep runs for each intensified zone In the Alt horizontal display mode pushing in the SEC DIV knob displays only B Sweeps When the B Sweep speed is set equal to the A Sweep speed in Alt or B disp...

Page 91: ... added With the available CIT A REF and A serve as menu selectors with MENU SELECT nomenclature added and also as delaying event count controls With the available WR they serve as word definition controls AV Button 5 14 Activates the Delta Volts measurement function and cancels the At or 1 At measurement function When the AV function is active two horizontal cursors are superimposed on the display...

Page 92: ...r the B Sweep horizontal display mode is selected the CRT readout displays delta time as a ratio where five divisions correspond to 100 ratio When At is active pressing the At button deactivates the function Momentarily pressing the At and AV buttons together activates the 1 Delta Time function and cancels any other Delta measurement function The waveform display and the Delta controls operate the...

Page 93: ...rigger mode is TRIG AFT DLV or with CIT TRIG DLV With the CIT these question marks disappear when a direct measurement is complete A question mark also appears when the difference betweeen the pair of delays in 1 t is less than 1 of full scale and the CIT does not remove it For the lowest 0 5 of the range of DLV settings the reading is zero This offset lends accuracy to delay time settings It is r...

Page 94: ...ses the line number rotating it counterclockwise decreases the line number Increasing the line number above the number of lines in a field or decreasing the number below the minimum automatically sets the line number to the minimum or the maximum in the other field and selects the opposite FLO 1 or FLO 2 coupling In ALT the coupling does not change and line numbers are limited to the numbers share...

Page 95: ... Independent mode the control moves only the cursor Refer to Figure 5 6 for the location of items 37 through 46 6014 07 Figure 5 6 Trigger controls and indicators MODE Buttons and Indicators Select the mode of either the A Trigger or the B Trigger Pressing a button steps the MODE selection once holding the button causes the MODE selection to step repeatedly Indicators show the selected mode of eit...

Page 96: ...s near the midpoint between the trigger signal peaks When INIT 50 is pressed the trigger level is set near the midpoint of the Signal regardless of the setting of LEVEL The established trigger level remains in effect when switching to Auto trigger mode To obtain triggered sweeps the triggering signal repetition rate must be greater than a nominal limit depending on the selected sweep speed With Au...

Page 97: ...splay sequence scale illumination flashes and the readout display is written once to present the scale factors and other readout data Only with the available CIT the Menu indicator lights when a menu is displayed and when the trigger controls are directed to the B Trigger with a Delay by Events or Logic Trigger function Pressing A B MENU with the A Sweep displayed not intensified displays the main...

Page 98: ...op Alt selection affect the triggering source With Alt vertical mode and with A Trigger modes other than Auto Lvi each displayed channel in turn provides the triggering signal and the respective LED indicator for each displayed channel is illuminated With Auto Lvi trigger mode or with Chop vertical mode the lowest numbered channel or ADD if it is displayed is the triggering signal source The Sourc...

Page 99: ...requency components below 60 Hz are attenuated and the dc component of the input signal is blocked This coupling works for signals that are superimposed on slowly changing dc voltages This method will work for most signals when trigger level readout is not desired Only with the available TV enhancement the trigger Coupling buttons and indicators select four additional trigger couplings The readout...

Page 100: ... horizontal displays if B mode is TRIG AFT DLY or with the CIT TRIG 1 DLV The trigger controls are directed to the opposite trigger while the A B TRIG or with the CIT A B MENU button is pressed With Inten Alt or B Sweep horizontal displays and with B Trigger mode set to RUN AFT DLY or with A Trigger mode set to Sgl Seq the trigger controls are alternately directed to the A Trigger or to the B Trig...

Page 101: ...e Sgl Seq display Varies the time from the end of an A Sweep to enabling the next sweep to be initiated by the triggering signal This control can be set to stabilize some aperiodic signals In the B ENDS A position fully clockwise trigger holdoff time is minimum and A Sweep terminates immediately at the end of the B Sweep This enables the fastest possible sweep repetition rate at slow A Sweep speed...

Page 102: ... is present at both the A GATE OUT and the B GATE OUT connectors Selects either 115 V or 230 V nominal ac power source voltage Provides an input for external signals to modulate the display intensity Contains the ac power source fuse Connects the ac power source to the instrument Supplies a normalized signal that represents the Channel 2 input signal Contain identification of any installed instrum...

Page 103: ...ctor WORD Provides a LSTTL compatible positive going pulse RECOG OUT when the Word Recognizer detects the selected word Connector or only with the available WR Option 09 or supplies Probe Power conditioned dc voltages to active probes only with Connector Option 11 GPIB Provides the IEEE Std 488 1978 compatible electrical Connector and mechanical connection to the GPIB 6014 08 Figure 5 7_ Rear pane...

Page 104: ...nge or the highest range with autoranging OVER is displayed in the readout Change the measurement range In autorange mode pressing either button disables autoranging and selects the next range above or below the present range Pressing the UP button at the highest range or DOWN at the lowest range does not change the range but changes the mode either from autoranging to manual ranging or from manua...

Page 105: ...one responds to continuity within about 100 ms Continuity operation is not affected by AUTO UP DOWN HOLD SMOOTH MIN MAX DISPLAY MIN MAX RESET REF DISPLAY or REF SET Selects or deselects resistance measurement Measures resistance within 2 k 20 k 200 k 2 M and 20 M n ranges At full scale 2 V appears across the test leads which will bias a silicon semiconductor junction to forward conduction Measures...

Page 106: ...ows HLD Display updating resumes when any DMM button is pressed Filters measurement variations from the display The display represents the mean value calculated from a series of accumulated measurements A numeral in the upper right of the display shows how many measurements the displayed average includes 8 16 24 32 40 48 56 or 64 After 64 measurements are accumulated the running average is updated...

Page 107: ...the display includes a A symbol With dBV or dBm the reference takes the place of Vref Selecting a new DMM function or turning off power clears the reference The reference is retained if another instrument function such as At displaces the DMM measurement and then the same DMM measurement is selected again Provide high impedance floating inputs to the DMM For DC and resistance measurements the uppe...

Page 108: ...isplay with Reference Continuity Display Over Range Display Display Mode Interactions 15 693 V DC 1 4356 A DC 64 Ll 0 9861 A DC 1 3461 V DC REF 0 5201 V AC MIN Ll 0 8293 V DC MAX OPEN SHORT OVER 10 Q 10 Q Selecting REF SET or SMOOTH cancels any HOLD REF DISPLAY or MIN MAX DISPLAY but those displays can be reselected and work with reference values or with the SMOOTH display mode With SMOOTH MIN MAX...

Page 109: ......

Page 110: ... Performance Characteristics SECTION 6 0 01 0 2465A 2455A 2445A Operators ...

Page 111: ... noted Items listed in the Performance Requirements column define the measurement capabilities of the instruments Supplementary measurement conditions may also be listed in the Performance Requirement column Mechanical characteristics are listed in Table 6 7 Environmental characteristics are given in Table 6 8 The oscilloscope meets the environmental requirements of MIL T 28800C for Type III Class...

Page 112: ...a 1SoC to 1SoC and Add 2 of reading 3SoC to SsoC SO n Coupling Add 1 of reading CH 2 Inverted Add 1 of reading t N Range 8 X VOLTS DIV setting V DIV VARiable noninverted Continuously variable between VOLTS DIV settings Extends deflection factor to 12 S V division Frequency Response Bandwidth is measured with a leveled low distortion so n source sine wave generator terminated in SO n The reference ...

Page 113: ...external termination on 1 Mf input 2465A 15 C to 35 C Dc to 350 MHz 35 C to 55 C Dc to 300 MHz 2455A 15 C to 35 C Dc to 250 MHz 35 C to 55 C Dc to 200 MHz 2445A Dc to 150 MHz AC Coupled Lower 3 dB 10Hz or less Frequency With Standard Accessory Probe 1 Hz or less Step Response Rise Time Calculated from T 0 35 BW 2465A 1 ns 2455A 1 4 ns 2445A 2 33 ns Channel Isolation 100 1 attenuation of deselected...

Page 114: ...00 MHz 1 3 1 300 to 350 MHz 1 5 1 2455A 2445A 1 3 1 for dc to Nominal Bandwidth Maximum Input Voltage A 5 V rms averaged for 1 second 50 V peak Cascaded Operation Channel 2 Vertical Signal Output into Channell input DC coupled using a 50 rl RG 58C U coaxial cable terminated in 50 rl at the Channel 1 input Channel 1 and Channel 2 VOLTS DIV set at 2 mV and Bandwidth Limit On Deflection Factor 400 N ...

Page 115: ...s set at the lesser of 6 divisions or the maximum leveled amplitude Bandwidth with external termination is checked with a 4 division reference signal amplitude Bandwidth with probe is checked using a probe tip to GR 017 0520 00 termination adapter Bandwidth with external termination is checked using a BNC 50 n feed through terminator 011 0049 01 3 dB Bandwidth Using standard accessory probe 2465A ...

Page 116: ...ns Channel Isolation 50 1 attenuation of deselected channel at 100 MHz with an 8 division input signal Signal Delay Between Channel 1 Within 1 0 ns measured at the 50 points and Either Channel 3 or Channel 4 Input Resistance 1 Mf 1 Input Capacitance 15 pF 3 pF Maximum Input Voltage A 400 V dc peak ac 800 V pop ac at 10kHz or less VERTICAL DEFLECTION SYSTEM ALL CHANNELS Low frequency Linearity Band...

Page 117: ...te is 2 5 MHz 0 2 Otherwise the switching rate is 1 MHz 0 2 The display cycle rate equals the chop switching rate divided by the number of channels displayed The chop switching rate is modulated slightly to minimize waveform breaks with repetitive signals TRIGGERING 0 35 division from dc to 50 MHz increasing to 1 0 division at 300 MHz and 1 5 divisions at 500 MHz 1 2 divisions from dc to 50 MHz in...

Page 118: ...ering from CH 3 or CH 4 Source Minimum poP Signal Amplitude for Add 1 division to the single channel source Stable Triggering from Composite specification Multiple Channel Source ALT Vertical Mode Checked at 50 mV per division Maximum poP Signal Rejected by NOISE REJ COUPLING Signals Within the Vertical Bandwidth CH 1 or CH 2 SOURCE 0 4 division for VOLTS DIV settings of 10 mV div and higher Maxim...

Page 119: ... Input Add 1 to 1 Mf input specification CH 2 Inverted Add 1 of setting to non inverted specification NOISE REJ Coupled Add 0 6 division to DC Coupled specifications CH 3 or CH 4 SOURCE Within 3 of setting 4 of pop signal 0 1 division 0 5 mV X probe attenuation factor and Trigger DC Coupled NOISE REJ Coupled Add 0 3 division to the DC Coupled specification AUTO LVL Mode Maximum Triggering Signal P...

Page 120: ...rate to 500 ps div 2455A and 2445A 500 ms div to 10 ns div in a 1 2 5 sequence of 24 steps X10 MAG extends maximum sweep rate to 1 ns div 8 Sweep Time 8ase Range 2465A 50 ms div to 5 ns div in a 1 2 5 sequence of 22 steps X10 MAG extends maximum sweep rate to 500 ps div 2455A and 2445A 50 ms div to 10 ns div in a 1 2 5 sequence of 21 steps X10 MAG extends maximum sweep rate to 1 ns div Timing Accu...

Page 121: ...ution 2465A Greater of either 10 ps or 0 025 of full scale 2455A 2445A Greater of either 20 ps or 0 25 of full scale Ilt Range 10 times A SEC DIV setting with Cursors 9 95 times A SEC DIV setting with Sweep Delay Sweep Delay Range oto 9 95 times the A SEC DIV setting from 500 ms to 10 ns with 2465A or 500 ms to 20 ns with the 2455A and 2445A A Sweep triggering event is observable on B Sweep with z...

Page 122: ...with BW Limit Off 2 MHz X Axis Low frequency Linearity 0 1 division or less compression or expansion of a two division center screen signal when positioned within the graticule area Cursor Position Range Delta Volts V Delta Time t Graticule Size Markings Trace Rotation Range 6 12 DISPLAY At least the center 7 6 vertical divisions At least the center 9 6 horizontal divisions 80 mm X 100 mm 8 major ...

Page 123: ...ases intensity 2 V blanks a maximum intensity trace 2 V modulates a normal intensity trace 9 kn 10 25 V peak 25 V pop ac at 10kHz or less SIGNAL OUTPUTS With A SEC DIV set to 1 ms 0 4 V 1 into a 1 Mn load 0 2 V 1 5 into a 50 n load or 8 rnA 1 5 into a short circuit Two times the A SEC DIV setting for SEC DIV from 100 ns to 100 ms 0 1 during sweep time 20 mV division 10 into 1 Mn 10 mV division 10 ...

Page 124: ...48 Hz to 440 Hz Fuse Rating 2 A 250 V AGC 3AG Fast blow or 1 6 A 250 V 5 X 20 mm Quick acting Maximum Power Consumption fully 120 watts 180 VA optioned instrument Primary Circuit Dielectric Voltage 1500 V rms 60 Hz for 10 seconds without Withstand Test breakdown Primary Grounding Type test to 0 1 Q maximum Routine test to check grounding continuity between chassis ground and protective earth groun...

Page 125: ... Add 0 003 of reading 0 004 of full scale oC below 18 C or above 28 C Common Mode Rejection Ratio 100 dB at dc 80 dB at SO and 60 Hz with 1 kn imbalance Normal Mode Rejection Ratio 60 dB at SO and 60 Hz Resolution 1 part in 20 000 of full scale except 0 1 V on SOO V range Step Response Time Manual Range Less than 1 second Auto Range Less than 2 seconds Input Resistance 200 mV and 2 V Ranges 1 Gn o...

Page 126: ... of full scale 10 kHz to 20 kHz 20 kHz to 100 kHz S of reading 0 2 of full scale 15 C to 18 C and 28 C to SsoC 200 mV to 200 V Input signal between 5 and 100 of full scale 40 Hz to 10 kHz 0 8 of reading 0 1 of full scale 20 Hz to 40 Hz and 1 3 of reading 0 1 of full scale 10 kHz to 20 kHz 20 kHz to 10 kHz 6 of reading 0 1 of full scale 500 V Input signal greater than 100 V and less than 500 V 40 H...

Page 127: ...than 2 seconds Less than 3 seconds 1 M 2 1 in parallel with less than 100 pF dB readings are calculated from AC VOLTS measurements 0 01 dB HI OHMS 0 1 of reading 0 01 of full scale 0 5 of reading 0 01 of full scale Add 0 01 of reading 0 001 of full scale oC above 28 C or below 18 C Add 0 01 of reading 0 001 of full scale oC above 28 C or below 18 C 2 of reading per 10 relative humidity above 70 re...

Page 128: ...ely 1 mA 20 kO Approximately 0 1 mAo 200 kO Approximately 10 p A 2 MO Approximately 1 p A 20 MO Approximately 0 1 p A Response Time 2 kO to 2 MO Manual Range Less than 1 second Auto Range Less than 2 seconds 20 MO Range Less than 5 seconds Reading Rate by Range 2 kO to 2 MO Approximately 3 per second 20 MO Approximately 1 5 per second 6 18 2465A 2455A 2445A Operators ...

Page 129: ...bove 28 C or below 18 C 2 of reading per 10 relative humidity above 70 relative humidity 2 Mfl Add 0 025 of reading 0 001 of full scaleWC above 28 C or below 18 C 2 of reading per 10 relative humidity above 70 relative humidity Voltage at Full Scale Approximately 0 2 V Maximum Open Circuit Voltage Less than 6 V Measuring Current by Range 200 fl Approximately 1 mAo 2 kfl Approximately 0 1 mA 20 kfl...

Page 130: ...kHz sinusoidal waveform 18 C to 28 C 0 6 of reading 0 1 of full scale 15 C to 18 C and 28 C 0 7 of reading 0 15 of full sea e to 55 C Response Time Manual Range Less than 1 second Auto Range Less than 2 seconds Input Resistance by Range 100 LA Approximately 1 0 kn 1 mA Approximately 100 0 n 10 mA Approximately 10 5 n 100 mA Approximately 1 5 n 1 A 1000 mAl Approximately 0 5 n Maximum Input Current...

Page 131: ...1 5 C 15 C to 18 C and 28 C 2 of reading 2 0 C to 55 C Ambient Temperature Probe Tip Measurement Range 62 C to 230 C in one range Resolution 0 1 C or 0 1 of ADDITIONAL CHARACTERISTICS Warmup time to Meet Electrical Specification Maximum Voltage between Inputs from either Input to Ground DC to 20 kHz Above 20 kHz 45 minutes 500 V rms 700 V peak 107 V Hz NOTE For AMPS modes maximum voltage between i...

Page 132: ...n 1 4 Square Wave Flatness With fast rise step rise time 1 ns 1 MO dc input coupling an external 50 0 termination and VAR VOLTS DIV control in calibrated detent Exclude the first 50 ns following the step transition For signals with rise times 10 ns add 2 pop between 155 ns and 165 ns after step transition Field Rate 5 mV div to 10 mV div 1 5 pop at 60 Hz with input signal of 0 1 V 20 mV div 1 pop ...

Page 133: ...or 60 Hz interlaced or noninterlaced systems For noninterlaced scan systems the video signal source must start and end with full lines of video for correct line identification in the field trigger modes Line Selection Range in FLD1 The lesser of 1280 or the number of lines in the FLD2 or Both Coupling Modes field Input Signal Amplitude for Stable Triggering Channel 1 or Channel 2 Minimum sync puls...

Page 134: ...g 6 24 With DC Coupling of A Trigger and B Trigger 150 MHz 3 3 ns For Count Delay by Events and Logic Trigger Functions Excluding Word Recognizer 1 5 divisions 0 75 division 4 0 divisions 2 0 divisions FREQUENCY RANGE LSD 1 Hz 100 nHz 10 Hz 1 JLHz 100 Hz 10 JLHz 1 kHz 100 JLHz 10 kHz 1 mHz 100 kHz 10 mHz 1 MHz 100 mHz 10 MHz 1 Hz 100 MHz 10 Hz 150 MHz 100 Hz Upranges at 100 of full scale downrange...

Page 135: ... 4 X Fregu ncy2 X TJE LSD Twice per second or twice the period of the input signal whichever is slower PERIOD RANGE LSD 10 ns 1 fs 100 ns 10 fs 1 itS 100 fs 10 itS 1 ps 100 itS 10 ps 1 ms 100 ps 10 ms 1 ns 100 ms 10 ns 1 s 100 ns 2s 1 itS 6 7 ns Upranges at 100 of full scale downranges at 9 of full scale Full scale corresponds to the value given in the Range column The maximum displayed value for ...

Page 136: ...ay Update Rate Performance Requirements TOTALIZE 9999999 Twice per second or once per event whichever is slower DELAY BY EVENTS Maximum Event Count 4194303 Minimum Time from Start Signal to 4 ns Any Delay Event LOGIC TRIGGER Minimum Function True Time 4 ns Minimum Function False Time 4 ns 6 26 2465A 2455A 2445A Operators ...

Page 137: ...etting LSDb 10 ppm X measured interval TJE A Trigger Level Error B Trigger Level Error 0 5 ns If the A and B Sweeps are triggered from different channels add 0 5 ns for channel to channel mismatch When the A Sweep is triggered by the Word Recognizer in synchronous mode add 100 ns for probe delay in asynchronous mode add 200 ns for probe delay Minimum Measurable Delay Time 70 ns Display Update Rate...

Page 138: ...annel of a two channel measurement add 0 5 ns for channel to channel delay mismatch Nonsuperimposed Delta Time LSDb ItrREF trOELTid TJE 0 0005 div X 1 SRREF 1 SROELT 10 ppm X Display Update Rate bSee Tables 2 1 and 2 2 A SEC DIV 10 ppm X measured interval 50 ps If A and B sweeps are triggered from different channels add 0 5 ns for channel to channel mismatch 0 5 div X 1 SRREF 1 SRoELT for trigger ...

Page 139: ...sec SROELT slew rate at trigger pOint delta trigger signal in div sec TJE trigger jitter error For delay or delta time disregarding noise in the signal this term contributes 1 LSD if the slew rate is greater than 0 03 vertical div ns or if the slew rate is greater than 30000 vertical div horizontal div Trigger Jitter Reference Trigger Signal Jitter 2 Delta Trigger Signal Jitter 2 A Sweep Trigger S...

Page 140: ...A sweep trigger signal rms noise in div When the Word Recognizer supplies a trigger in synchronous mode the trigger jitter of the associated trigger signal is 1 ns in asynchronous mode the associated trigger signal jitter is 20 ns N number of averages during measurement interval see Table 2 1 for Delay or Delta Time measured frequency X measurement interval for Frequency or Period Measurement Inte...

Page 141: ...th High Low Minimum Clock Period Delay from Selected Clock Edge to Word Out from C T T 25 ns ons 20 ns 20 ns 50 ns 55 ns ASYNCHRONOUS MODE Maximum Trigger Frequency Minimum Coincidence Between Data Inputs 00 015 Q Resulting in a Trigger Maximum Coincidence Between Data Inputs 00 015 Q Without Producing a Trigger Delay from Input Word Coincidence to Word Out 2465A 2455A 2445A Operators 10 MHz 85 ns...

Page 142: ...ements INPUTS AND OUTPUTS Input Voltages Minimum Input Voltage A 0 5 V Maximum Input Voltage A 5 5 V Maximum Input Low Voltage 0 6 V Minimum Input High Voltage 2 0 V WORD RECOG OUT High 2 5 V LSTIL output Low 0 5 V LSTIL output Input High Current 20 p A Input Low Current 0 6 rnA source 6 32 2465A 2455N2445A Operators ...

Page 143: ...stance from center screen in div 0 5 mV V DIV setting CH 2 Inverted Add 0 2 div 15 C to 15 C and 35 C Add 1 5 mV V DIV setting to 55 C CH 3 and CH 4 0 7 div 3 of distance from center screen in div IEEE 488 Outputs Volts Out for True loT 48 mAl Max 0 5 V Volts Out for False loF 5 2 mA Min 2 5 V Volts Out with Output Disabled Max 3 7 V Min 2 5 V Output Leakage Current with Max 40 pA Power OFF 0 V VI...

Page 144: ...455A 2445A with or without 160 mm 6 29 in Options 05 06 and 09 and 10 2465A 2455A 2445A with Option 01 202 mm 7 96 in With Feet and Accessories Pouch 2465A 2455A 2445A with or without 202 mm 25 4 mm 7 94 in 1 0 Options 05 06 and 09 and 10 in 2465A 2455A 2445A with Option 01 243 mm 25 4 mm 9 56 in 1 0 in Width with handle 338 mm 13 31 in Depth With Front Panel Cover 434 mm 17 1 in With Handle Exten...

Page 145: ...J I 796 L202J 1__ l __ d t L 15 60 _ 6 I 396J _ f 20 00 508J f 16 88 1 429 I 2465A 2455A 2445A WITH OR WITHOUT OPTIONS OS 06 AND 09 AND 10 2465A 2455A 2445A WITH OPTION 01 i3 I j f I fio8 1 1 13 31 338J _ u I 1 Dimensions are in inohes mmJ 6014 10 Figure 6 1 Dimensional drawing 2465A 2455A 2445A Operators 6 35 ...

Page 146: ...I Class 5 Style C equipment with the rack mounting rear support kit installed Rack mounted instruments will be capable of meeting or exceeding the requirements of Tektronix Standard 062 2853 00 class 5 15 C to 55 C For a rack mounted instrument ambient temperature should be measured at the instrument s air inlet Fan exhaust temperature should not exceed 65 C 62 C to 85 C To 15 000 feet Maximum ope...

Page 147: ...C para 4 5 5 4 3 Set on rear feet and allow to topple over onto each of four adjacent faces Tektronix Standard 062 2858 00 Meets the limits of the National Safe Transit Assn test procedure 1A B 2 10 drops of 36 inches Tektronix Standard 062 2858 00 Meets the limits of the National Safe Transit Assn test procedure 1A B 1 excursion of 1 inch pop at 4 63 Hz 1 1 g for 30 minutes Tektronix Standard 062...

Page 148: ......

Page 149: ...SECTION 7 Options and Accessories 2465A 2455A 2445A Operators ...

Page 150: ...illoscope is ordered with Option 1R it is shipped in a configuration that permits easy installation into a 19 inch wide electronic equipment rack When rackmounting the instrument the rear support kit enables the rackmounted instrument to meet appropriate electrical and environmental specifications Connector mounting holes are provided in the front panel of the rackmounted instrument These enable c...

Page 151: ...ssociated fuses Option A1 Universal Euro Power cord 2 5 m 161 0104 06 Fuse 1 6 A 250 V 5 x 20 mm Quick acting 159 0098 00 Option A2 UK Power cord 2 5 m 161 0104 07 Fuse 1 6 A 250 V 5 x 20 mm Quick acting 159 0098 00 Option A3 Australian Power Cord 2 5 m 161 0104 05 Fuse 1 6 A 250V 5 x 20 mm Quick acting 159 0098 00 Option A4 North American Power Cord 2 5 m 161 0104 08 Fuse 2 A 250 V AGC 3AG Fast b...

Page 152: ...y Pouch Snap Fastener 016 0692 00 Accessory Pouch Zip lock Fastener 016 0537 00 Operators Manual 070 6014 00 Fuse 2 A 250 V 159 0021 00 CRT Filter Blue Plastic installed 378 0199 00 CRT Filter Clear Plastic 378 0208 00 Front Cover 200 3199 00 U S Power Cord 161 0104 00 The following standard accessories are provided with instruments containing Option 01 OMM Qty Description Probe Set Accessories to...

Page 153: ...C Graticule Polarized Viewing Hood Part Number 378 0199 01 378 0199 02 016 0180 00 The following standard accessories are provided with instruments containing Option 09 WR Qty Description Part Number P6407 Word Recognizer Probe 2 10 wide comb 10 inch leads without grabbers 010 6407 01 012 0747 00 206 0222 00 20 Grabber Tips 2465A 2455N2445A Operators ...

Page 154: ...le Viewing Hood Binocular Oscilloscope Camera SCOPE MOBILE Cart Carrying Strap 2465A Service Manual 2455A and 2445A Service Manual 24X5A 2467 Options Service Manual covers Option 01 DMM Option 05 TV Option 06 CTT Option 09 WR and Option 10 GPIB 2465A 2455A 2445A Operators Options and Accessories Part Number 016 0720 00 P6136 Opt 01 P6133 Opt 01 016 0825 01 016 0180 00 016 0592 00 016 0566 00 See C...

Page 155: ......

Page 156: ...APPENDIX A 2465A 2455A 2445A Operators ...

Page 157: ...ize Setups Program GPIB Address Program GPIB Message Terminator and Talk Listen Receive Setups Mode Send Setups Mode Select TV system M or non system M Select TV line numbering format Select TV sync polarity default Select DMM Continuity Tone and Input Resistance To operate these features 1 Enter the Diagnostic Monitor mode by pressing and holding both tlV and tlt then pressing Trigger SLOPE while...

Page 158: ...OWER UP TO SETUP 1 Instrument will power up with the setup stored as setup 1 EXER 07 Enable Disable Setup SAVE and Sequence Definition ENABLE SAVE AND SEQUENCE CHANGE All Save and Sequence functions are enabled DISABLE SAVE AND SEQUENCE CHANGE All Save and Sequence definition functions are disabled ENABLE SAVE 1 8 NO SEQ CHANGE Only setups 1 through 8 can be changed BEGIN STEP END attributes canno...

Page 159: ...R EOI MODE TALK LISTEN The instrument accepts only the EOI bus message as the end of a string of received bytes The instrument asserts EOI at the end of a string of transmitted bytes The instrument can be addressed as a talker to send settings and readings TERMINATOR LF MODE TALK LISTEN The instrument accepts either the EOI bus message or an LF line feed character as the end of a string of receive...

Page 160: ...instrument will exit EXER 13 automatically GP EXER 14 Send Setups Mode Before executing this exerciser make sure the instrument is connected to another by a GPIB cable and be sure the other instrument is in the READY TO RECEIVE SETUPS state initiated by GP EXER 13 SENDING SETUPS When the transfer is complete the instrument will exit EXER 14 automatically TV EXER 61 Select TV system M or non system...

Page 161: ...ES TVSYNC NEGATIVE Trigger Slope is initialized to when Coupling is changed from AC to LINES OM EXER 72 Select DMM Continuity Tone and Input Resistance MOVE SOURCE FOR CONTINUITY TONE Short the test leads together and press the upper SOURCE button to increase the pitch of the continuity tone or press the lower button to lower the pitch Press the upper COUPLING button to exit the continuity tone mo...

Page 162: ......

Page 163: ...APPENDIX B 2465A 2455A 2445A Operators ...

Page 164: ...r to EXER 07 described in Appendix C Top Row or or Bottom Row REPLACE STEP nn REPLACE BEGIN nn REPLACE END nn NAME xxxxxxx NAME xxxxxxx NAME xxxxxxx PUSH STEP TO REPLACE SETUP REF moves a cursor to the definition mode field the step attribute field the setup number field or any character in the NAME argument The control selects a definition mode REPLACE INSERT or DELETE a step attribute STEP BEGIN...

Page 165: ...SAVE presents this cycle of HELP messages in the bottom row Top Row or or Bottom Row or or or or INSERT STEP nn NAME xxxxxxx INSERT BEGIN nn NAME xxxxxxx INSERT END nn NAME xxxxxxx INSERT WILL DESTROY STEP 30 PUSH STEP TO INSERT SETUP TURN Ll REF TO FIELD THEN TURN Ll TO DESIRED SETIING PUSH RECALL TO CANCEL THIS MODE In the DELETE definition mode the attribute and NAME fields cannot be changed Wh...

Page 166: ...icator Repeatedly pressing RECALL presents this cycle of HELP messages In message 1 n is blank 2 3 or 4 depending on how many sequences are defined Bottom Row or or PUSH 1 n OR STEP TO START SEQ TURN TO SELECT ANY STEP PUSH SAVE TO CANCEL THIS MODE Turning REF or while in the Sequence Recall mode accesses to any setup STEP recalls any selected setup initiates sequential setups and illuminates the ...

Page 167: ......

Page 168: ...APPENDIX c 2465A 2455A 2445A Operators ...

Page 169: ...ront panel indicators If a kernel test fails the user can attempt to operate the instrument normally by pressing the NB TRIG button Operation is unpredictable it depends on the nature of the failure Confidence Tests Confidence tests are performed after the processor kernel has been found operational These tests check a portion of the instrument for correct operation If a Confidence test fails the ...

Page 170: ... Stuck 03 Readout Interface or Memory Failure 04 Calibration Data Parity or Checksum Error 05 Main Board Failure Detected by Auto Level Trigger on LINE Source 06 Memory Battery Voltage Too High or Too Low GP 11 GPIB Interface Failure Detected OM 76 Digital Multimeter Failure Detected CT 81 87 Counter Timer Trigger Failure Detected C 2 2465A 2455A 2445A Operators ...

Page 171: ...APPENDIX D 2465A 2455A 2445A Operators ...

Page 172: ...se time 2 Measured times are 4 horizontal divisions 3 TJE is negligible for slew rates greater than O 1 div ns 4 For all B Trigger modes the beginning and end of the measured interval are visually superimposed 5 RUN and TRIG accuracies are with RUN AFT OLY and TRIG AFT OLY B Trigger Modes Selected resolution See Resolution Selections table for resolutions corresponding to trigger rates with AUTO r...

Page 173: ...s MEASURED TIME INTERVAL CONDITIONS 1 Input signal is 5 vertical divisions with a 2 ns rise time 2 Measured times are 4 horizontal divisions 3 TJE is negligible for slew rates greater than 0 1 div ns 4 RUN and TRIG accuracies are with RUN AFT OLY and TRIG AFT OLY B Trigger Modes Selected resolution See Resolution Selections table for resolutions corresponding to trigger rates with AUTO resolution ...

Page 174: ...DISPLAY DISPLAY SHIFT o 000 o SMOOTH VOLTS DIV INTENSITY BEAM l 0 SCALE ILLUMgHl iPOWER9 tH 1 ON FOCUS READOUT INTENSITY TRACE OFF RO m SCAlE Y SCALE FACTORS FACTORS OFF ON OFF CH lOR f3 CH 3 CH 4 lMn 15pF 4DDVpk lMn 15pF 400Vpk lMn 15pF 400Vpk i i lMn 15pF 400Vpk SERIAL 50n 5V RMS 50n 5V RMS 6014 11 ...

Page 175: ...6014 12 ...

Page 176: ...This insert Is provided asa supplement to the instruction manual fumlshed with this modified Instrument The information given in this Insert supersedes that given In the manual 2465A OPERATORS MODYC Copyright 1986 Tektronix Inc ...

Page 177: ... Manual inserts REFERENCE There are no changes in specifications or operation of the 2465A Oscilloscope due to MOD YC Refer to the 2465A Operators manual for any information necessary for instrument operation ADD 010 6101 13 1 061 3344 00 2 061 3343 00 2 070 6019 00 2 070 6014 00 040187A ACCESSORIES PROBE VOLTAGE P61 01 A X1 2 0M W ACCESS INSERT OPERATORS MANUAL 2465A MOD YC INSERT SERVICE MANUAL ...

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