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Tektronix 2337, Инструкция по эксплуатации


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Substituting these values  in the vertical  conversion  factor 

formula:

Vertical

Conversion

Factor

30  V 

4  div  x  5 V/div

1.5

Continuing,  for  the  unknown  signal  the  VO LTS/DIV 

switch  setting  is 

1

  and  the  peak-to-peak  amplitude  spans 

five vertical  divisions.  The  arbitrary  deflection  factor  is then 
determined by  substituting values in the formula:

reference  signal  (e.g.,  on  assembly  line  test)  may  be  easily 
and  accurately  measured  w ith  the  2337.  To  accomplish 

this,  a  reference  signal  o f  known  time  duration  is  first  set 
to  an  exact  number  o f horizontal  divisions  by  adjusting the 
A  SEC/DIV  switch  and  the  TIME  (PULL)  VAR  control. 

Unknown  signals  can  then  be  compared  w ith  the  reference 
signal  w ithout  disturbing  the  setting  o f  the  TIME  (PULL) 
VAR  control.  The  procedure  is as follows:

1. 

Set  the  time  duration  o f  the  reference  signal  to  an 

exact  number  o f  horizontal  divisions  by  adjusting  the  A 
SEC/DIV switch  and TIME  (PULL)  VAR  control.

Arbitrary

Deflection  =  1.5  x  1  V/div  =  1.5  V/div 

Factor

2. 

Establish  a  horizontal  conversion  factor,  using  the 

follow ing  formula  (reference  signal  time  duration  must  be 
known):

The  amplitude  o f  the  unknown  signal  can then  be deter­

mined  by  substituting  values  in  the  unknown  signal  ampli­
tude  formula:

Am plitude  =  1.5  V /div  x  5 div  =  7.5 V

Horizontal

Conversion

Factor

reference  signal  time 

duration  (seconds) 

horizontal 

A SEC/DIV 

distance 

x 

switch

(divisions) 

setting

Time  Comparison

In  a  similar  manner  to   "A m plitude  Comparison", 

repeated  time  comparisons  between  unknown  signals and a

3. 

For  the  unknown  signal,  adjust  the  A  SEC/DIV 

switch  to  a setting that provides sufficient horizontal  deflec­
tion  to  make an  accurate  measurement.  Do  not readjust the 
TIME  (PULL)  VAR  control.

@

2237  Operators

55

Содержание 2337

Страница 1: ...nc P O Box 500 Beaverton Oregon 97077 070 4119 00 Product Group 40 PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL 2337 OSCILLOSCOPE OPERATORS INSTRUCTION Serial Number________________ MANUAL First Printing SEP 1981 Revised MAY 1983 ...

Страница 2: ...L 10 A T R IG G E R 12 BTRIGGER 15 REAR PA N EL 18 Page OPERATING CONSIDERATIONS 20 GRATICULE 20 GRO UNDING 20 SIGNAL CONNECTIONS 21 INPUT COUPLING CAPACITOR PRECHARGING 21 INSTRUMENT C O O LING 22 INSTRUMENT FAM ILIAR IZATIO N 23 INTRODUCTION 23 EQUIPMENT REQUIRED 23 NORMAL SWEEP DISPLAY 24 DISPLAYING A SIGNAL 26 OPERATOR S CHECKS AND ADJUSTMENTS 36 INTRODUCTION 36 TRACE ROTATIO N 36 PROBE COMPEN...

Страница 3: ...n 55 DELAYED SWEEP MAGNIFICATION 57 Magnified Sweep Runs After Delay 57 Pulse Jitter Time Measurement 59 Triggered Magnified Sweep 60 DELAYED SWEEP TIME MEASUREMENTS 60 Time D uration 61 Page Rise T im e 61 Time Difference Between Repetitive Pulses 63 Time Difference Between Two Time Related Pulses 65 DMM DISPLAYS AND MEASUREMENTS 67 Resistance 67 RMS A C 67 DC V o lts 68 OPTIONS 69 OPTION 0 3 69 ...

Страница 4: ...controls and indicator 10 6 A TRIGGER controls connector and indicator 13 7 DMM and B TRIGGER controls connectors and LCD readout 16 8 Rear panel connectors 19 9 Graticule measurement markings 20 10 Initial setup for instrument familiarization procedure 27 11 Probe compensation 38 12 Vertical display accuracy 39 13 Peak to peak waveform voltage 41 14 Instantaneous voltage measurement 43 15 Algebra...

Страница 5: ...me related pulses 51 Phase difference 53 High resolution phase difference 53 Delayed sweep magnification 58 Pulse jitte r 59 Time duration using delayed sweep 62 Rise time differential time method 63 Time difference between repetitive pulses 64 Time difference between two time related pulses 66 2337 Operators ...

Страница 6: ... Line Voltage and Fuse Selection 4 3 DMM Autoranging 17 4 Equipment Required for InstrumentFamiliarization Procedure 24 5 Electrical Characteristics 72 6 Environmental Characteristics 95 7 Physical Characteristics 97 8 Option Electrical Characteristics 98 I 2337 Operators v ...

Страница 7: ...itions or practices that could result in personal injury or loss of life Terms 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 immedi ately accessible as one reads the marking Symbols in This Manual A This symbol indicates where app...

Страница 8: ...oss 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 con nectors see Figure 2 Use the Proper Fuse To avoid ...

Страница 9: ... ...

Страница 10: ...ximum sweep speed to 5 ns per division when the SEC DIV switch is set to 0 05 ps A 3 1 2 digit LCD liquid crystal display readout enables rapid measurement of time difference between any two points on the oscilloscope display The DMM portion measures dc voltage resistance and true rms ac voltage Measurement values are displayed on the LCD readout together with polarity overrange and function indic...

Страница 11: ...wrong line fuse is installed LINE VOLTAGE SELECTION The 2337 operates from either a 115 V or a 230 V nominal ac power input source with a line frequency ranging from 48 Hz to 440 Hz Before connecting the power cord to a power input source verify that the LINE VOLTAGE SELECTOR switch located on the rear panel see Figure 1 is set for the correct nominal ac power input source voltage To convert the i...

Страница 12: ...LINE VOLTAGE SELECTOR SW ITCH DETACHABLE POWER CO RD ____________ CO RD SET SEC U R IN G CLAM P LINE FUSE 4119 02 Figure 1 LINE VOLTAGE SELECTOR switch line fuse and power cord 2337 Operators 3 ...

Страница 13: ...witch Voltage Position Range Fuse Data 100 V Nominal 90 to 115 V 1 0 A 250 V Fast blow 200 V Nominal 180 to 230 V 0 5 A 250 V Fast blow To verify that the instrument power input fuse is of proper value for the nominal ac source voltage perform the following procedure 1 Press in the fuse holder cap and release it with a slight counterclockwise rotation 2 Pull the cap with the attached fuse inside o...

Страница 14: ...ck of this manual Contact your Tektronix representative or local Tektronix Field Office for additional power cord information NOTE See APPENDIX A at the back of this manual for fur ther power input information Figure 2 Optional power cords Plug Configuration Usage Nominal Line Voltage AC Reference Standards Option North American 120 V 15A 120V ANSI C73 11 h NEMA 5 15 P IEC 83c Standard Universal E...

Страница 15: ...operation of the instrument T INTEN Control Determines the brightness of the crt display has no effect when BEAM FIND switch is pressed in T BEAM FIND Switch When held in compresses the display to within the graticule area and provides a visible viewing intensity to aid in locating off screen displays T TRACE ROTATION Control Screwdriver control used to align the crt trace with the horizontal grat...

Страница 16: ... the inputs of the vertical deflection system or for an X Y display In the X Y mode the signal connected to the CH 1 OR X connector provides horizontal deflection and the signal connected to the CH 2 OR Y connector provides vertical deflection Input Coupling Switches AC GND DC Select the method of coupling input signals to the vertical deflection system AC Input signal is capacitively coupled to t...

Страница 17: ...witches Select the vertical deflection factor in a 1 2 5 sequence VAR control must be in detent to obtain a calibrated deflection factor IX PROBE Indicates the deflection factor selected when using either a IX probe or coaxial cable 10X PROBE Indicates the deflection factor selected when using a 10X probe l VAR Controls Provide continuously variable uncal ibrated deflection factors between the cal...

Страница 18: ...nnel 1 and Channel 2 inputs at sweep speeds from 0 5 ms per division to 0 5 s per division ADD Selects the algebraic sum of the Channel 1 and Channel 2 input signals for display CH 2 Selects only the Channel 2 input signal for display AUTO Press in both ALT and CHOP buttons The A Sweep circuitry automatically selects the most useful switching method ALT or CHOP for dual displays X Y Press in both ...

Страница 19: ...on to display a sample of the signal present in the A Trigger amplifier for all A TRIGGER SOURCE switch settings except VERT MODE All other signal displays are removed while the TRIG VIEW push button is held in HORIZONTAL Refer to Figure 5 for location of items 20 through 26 20 B DELAY TIME POSITION A TIME POSITION Controls Select the amount of delay time between start of the A Sweep and start of ...

Страница 20: ...4119 06 Figure 5 Horizontal controls and indicator ...

Страница 21: ...knob and rotating it to a setting shown by the white line scribed on the knob The B Sweep circuit is used for delayed sweep operation only 22 TIME PULL VAR Control Provides continuously variable uncalibrated A Sweep speeds between SEC DIV switch settings to at least 2 5 times the cali brated setting extends slowest sweep speed to at least 1 25 s per division To operate this control pull out the VA...

Страница 22: ...rovides both coarse and fine control action Reverse the direction of rotation to actuate fine positioning feature When X Y VER TICAL MODE is selected the Horizontal POSITION control moves the display horizontally X axis A TRIGGER Refer to Figure 6 for location of items 27 through 34 27 SLOPE Switch Selects the slope of the signal that triggers the sweep plus When push button is released out sweep ...

Страница 23: ...only one sweep is displayed for each trigger signal Another single sweep cannot be displayed until the SGL SWP push button is momentarily pressed in again to reset the A Sweep circuit This mode is useful for displaying and photographing either nonrepetitive signals or signals that cause unstable conventional displays e g signals that vary in amplitude shape or time 30 TRIG D READY Indicator LED Il...

Страница 24: ...13 ire 6 A TRIGGER controls connector and indicator ...

Страница 25: ...the CH 2 input connector is the source of the trigger signal LINE Provides a trigger signal from a sample of the ac power source waveform This trigger source is useful when channel input signals are time related multiple or submultiple to the frequency of the power input source voltage EXT Permits triggering on signals applied to the External Trigger Input connector A EXT EXT MO External trigger s...

Страница 26: ... are attenuated This position is useful for providing a stable display of the high frequency components of a complex waveform HF REJ Signals are capacitively coupled The dc component is blocked and signals below approximately 20 Hz and above approximately 50 kHz are attenuated This position is useful for providing a stable display of the low frequency components of a complex waveform DC All compon...

Страница 27: ...Selects the amplitude point on the trigger signal at which the sweep is triggered This control is usually adjusted for the desired display after Trigger SLOPE and SOURCE switch settings have been selected 36 SOURCE Switch Determines the mode of operation for the B Sweep and the signal source for the B Trigger A TIME Provides two intensified zones on the crt trace for differential time measurements...

Страница 28: ...nce intensified zone and the setting of the measurement inten sified zone RUNS AFTER DLY The B Sweep starts immedi ately after the delay time selected by the DELAY TIME POSITION control and is independent of the B Trigger signal VERT MODE Allows the internal trigger source to be determined by the vertical mode of operation CH 1 The signal applied to the CH 1 input con nector is the source of the t...

Страница 29: ...Figure 7 DMM and B TRIGGER controls connectors and LCD readout 16 2337 Operators ...

Страница 30: ...and the 350V RMS AC consists of two internal upper and lower ranges The internal ranges are fully autoranging within the DMM RANGE selected See Table 3 for the LCD readout values at which autoranging will occur for each DMM RANGE selected Table 3 DMM Autoranging DOWNRANGE UPRANGE When LCD When LCD Reads Less Reads More RANGE FUNCTION Than Than 500 V DC NA NA 200 V DC 10 0 V 19 99 V 2 V DC 0 100 V ...

Страница 31: ...olarity indication is displayed for positive values Negative polarity indication is automatic for negative values Decimal point indication is automatic In an overrange con dition a 1 will be displayed on the left side of the LCD readout followed by three blank digits and a decimal point REAR PANEL Refer to Figure 8 for location of items 42 and 43 42 GND Connector Provides direct connection to inst...

Страница 32: ...VE COVERS REFER SERVICING TO OUAUEIEO PERSONNEL FOR CONTINUED FIRE PROTECTION REPIACE ONLY WITH SPEOKO TYPE AMO RATED FUSE DISCONNECT POWER INPUT BEFORE REPLACING FUSE NOMINAL RANGE FUSE gOV i v_ a w a o v o sa fast POWER MAX WATTS 80 MAX VA n FREQ 48440Hf TEKTRONIX INC BEAVERTON OREGON U S A 4119 09 Figure 8 Rear panel connectors 2337 Operators 19 ...

Страница 33: ...l deflection factors and horizontal timing are calibrated to the graticule so that accurate measurements can be made directly from the crt Also percentage marks for the measurement of rise and fall times are located on the left side of the graticule GROUNDING The most reliable signal measurements are made when the 2337 and the unit under test are connected by a 1ST OR LEFT 11TH OR RIGHT VERTICAL V...

Страница 34: ...displayed waveform To maintain the original frequency characteristics of an applied signal only high quality low loss coaxial cables should be used Coaxial cables should be terminated at both ends in their char acteristic impedance If this is not possible use suitable impedance matching devices INPUT COUPLING CAPACITOR PRECHARGING When the input coupling switch is set to GND the input signal is co...

Страница 35: ...r shells o f the A EXT CH 1 OR X and CH 2 OR Y connectors are attached to the 2337 chassis ground 6 Set the AC GND DC switch to AC The display will remain on the screen and the ac component of the signal can be measured in the normal manner 2 Touch the probe tip to the oscilloscope chassis ground INSTRUMENT COOLING 3 Wait several seconds for the input coupling capacitor to discharge To maintain ad...

Страница 36: ...r the available ac power input source voltage Refer to the Preparation for Use instructions in this manual for this information Verify that the POWER switch is OFF push button out then plug the power cord into the ac power input source outlet If during the performance of these procedures an improper indication or instrument malfunction is noted first verify correct operation of associated equipmen...

Страница 37: ...1 V aberrations 2 Dual Input Coupler Connectors bnc female to dual bnc male Cable 2 required Impedance 50 2 length 42 in connectors bnc Adapter Connectors bnc female to bnc female Termination Impedance 50 1 connectors bnc 1 Preset the instrument front panel controls as follows Display INTEN ASTIG FOCUS Vertical both CH 1 and AC GND DC VOLTS DIV VOLTS DIV VAR VERTICAL MODE CH 2 INVERT BW LIMIT POSI...

Страница 38: ... ON and allow the instrument to warm up for 20 minutes 3 Adjust the INTEN control for desired display brightness A Trigger 4 Adjust the Vertical and Horizontal POSITION controls to center the trace on the screen SLOPE LEVEL Trigger Mode COUPLING SOURCE TRIG HOLDOFF PUSH VAR push button out Midrange Select AUTO AC VERT MODE Fully clockwise and pushed in NOTE Normally the resulting trace will be par...

Страница 39: ...e positions The display should become blurred on either side of the optimum control setting 6 Set the FOCUS control for a sharp well defined display over the entire trace length If a well focused display cannot be obtained see the Astigmatism adjust ment procedure under Operator s Checks and Adjust ments The ASTIG adjustment is used in conjunction with the FOCUS control to initially obtain a well ...

Страница 40: ...CALIBRATION GENERATOR 4119 11 Figure 10 Initial setup for instrument familiarization procedure 2337 Operators 27 ...

Страница 41: ... 8 Rotate the CH 1 VOLTS DIV VAR control fully clockwise Note that the vertical UNCAL light illuminates when the VOLTS DIV VAR control is out of the calibrated detent 9 Observe that maximum vertical deflection occurs when the VOLTS DIV VAR control is fully clockwise 10 Rotate the CH 1 VOLTS DIV VAR control fully counterclockwise to its calibrated detent 11 Select CH 2 VERTICAL MODE and perform pre...

Страница 42: ... SOURCE switch to CH 1 22 Press in and hold the TRIG VIEW push button Observe the Channel 1 trigger signal that is present in the A Trigger amplifier NOTE When in the TRIG VIEW mode a trigger signal is displayed on the crt screen for every A TRIGGER COUPLING switch position and for every A TRIG GER SOURCE switch position except VERT MODE 23 Still holding in the TRIG VIEW push button rotate the A T...

Страница 43: ...a time shared basis This mode is most useful for sweep speeds from 0 5 ms to 0 5 s per division 31 Set the A TRIGGER SOURCE switch to VERT MODE 32 Observe the switching between Channel 1 and Channel 2 at the higher sweep speeds indicated by the segmented trace 33 Select AUTO VERTICAL MODE by simultaneously pressing in both ALT and CHOP push buttons 34 Rotate the A SEC DIV switch throughout its ran...

Страница 44: ...trol between its maximum clockwise and counterclockwise positions The display will free run near each lim it of rotation Observe that the TRIG D READY light illuminates only when the display is triggered 8 Observe that the crt trace becomes dimmer as the holdoff between sweeps is increased 2 Adjust the A TRIGGER LEVEL control for a stable display 9 Return the TRIG HOLDOFF PUSH VAR control to its c...

Страница 45: ...G switch to AC and the A TRIGGER SOURCE switch to CH 1 11 Remove the calibration signal from the CH 1 input connector 12 Press in the A TRIGGER SGL SWP push button momentarily for single sweep operation 13 Observe that the TRIG D READY light illuminates indicating that the A trigger circuit is armed READY for a single sweep display No display should be present on the crt screen 14 Reconnect the ca...

Страница 46: ...1 ms and select the A INTEN HORIZ MODE Ensure that the B TRIGGER SOURCE switch is set to A TIME 4 Observe that two intensified zones approximately 1 division in length appear on the display 5 Rotate both the B DELAY TIME POSITION control reference point and the A TIME POSITION control measurement point throughout their ranges the inten sified zones move continuously across the display as the contr...

Страница 47: ...VEL control and observe that the intensified zone of the display disappears when this control is out of triggerable range Readjust the B TRIGGER LEVEL control for a stable display 5 Select the B HORIZ MODE and rotate the B DELAY TIME POSITION control clockwise Observe that the length of the display decreases 6 Operation with the B TRIGGER SOURCE switch set to CH 1 CH 2 or EXT is similar to operati...

Страница 48: ...tive peaks of the waveform are blanked indicating intensity modulation adjust INTEN control as necessary 5 Disconnect the 50 J2 bnc cable from the Z AXIS INPUT connector and disconnect the dual input coupler from the CH 1 input connector Using the Bandwidth Limit Switch 1 Connect a fast rise output calibration signal through a 42 inch 50 2 cable and a 50 2 termination to the CH 1 input connector 2...

Страница 49: ...t the POWER switch is OFF push button out then plug the power cord into the ac power input source outlet Push in the POWER switch ON to apply power to the instrument and allow sufficient time for warm up before starting these checks and adjustments Warm up time required to meet all the instrument s specification is 20 minutes 1 Preset instrument controls and obtain a Normal Sweep Display refer to ...

Страница 50: ... connected to the Channel 1 input connector to the AMPL CAL output 5 Using the approximately 1 kHz AMPL CAL square wave signal as the input obtain a display of the signal refer to Instrument Familiarization 6 Set the A SEC DIV switch to display several cycles of the AMPL CAL signal Use the Channel 1 POSITION control to vertically center the display 7 Check the waveform presentation for overshoot a...

Страница 51: ... signal 6 Slowly adjust the FOCUS control to its optimum setting best defined display If the ASTIG adjustment is correctly set all portions of the trace will come into sharpest focus at the same position of the FOCUS control ASTIGMATISM 1 Preset instrument controls and obtain a Normal Sweep Display refer to Instrument Familiarization NOTE The setting o f the ASTIG adjustment should be correct for ...

Страница 52: ...al Sweep Display refer to Instrument Familiarization 2 Set AC GND DC both DC 3 Connect a 10X probe to the Channel 1 input con nector and connect the probe tip to the AMPL CAL output 4 Adjust the INTEN control for desired brightness and adjust the FOCUS control for best defined display 5 Adjust the A TRIGGER LEVEL control for a stable display of the AMPL CAL signal 7 Check for a vertical display am...

Страница 53: ...rement use the following procedure N O TE This procedure may also be used to make voltage measurements between any two points on the waveform 1 Preset instrument controls and obtain a Normal Sweep Display 2 Apply the ac signal to either vertical channel input connector and set the VERTICAL MODE switch to display the channel used 3 Set the appropriate VOLTS DIV switch to display about five division...

Страница 54: ...e can be obtained by measuring from the top o f a peak to the top o f a valley This w ill eliminate trace thickness from the measurement 9 Calculate the peak to peak voltage using the follow ing formula vertical VOLTS DIV probe Volts p p deflection x switch x attenuation divisions setting factor EXAMPLE The measured peak to peak vertical deflec tion is 4 6 divisions see Figure 13 with a VOLTS DIV ...

Страница 55: ...ERT switch is in its noninverting mode push button out 6 Set the AC GND DC switch to GND and position the baseline trace to a convenient reference line using the Vertical POSITION control For example if the voltage to be measured is positive position the baseline trace to the bottom graticule line If a negative voltage is to be measured position the baseline trace to the top graticule line Do not ...

Страница 56: ...TS DIV x switch x setting probe attenuation factor E X A M P L E The measured vertical deflection from the reference line is 4 6 divisions see Figure 14 the wave form is above the reference line the VOLTS DIV switch is set to 2 and a 10X attenuator probe is being used Substituting the given values Instantaneous Voltage 4 6 div x 1 x 2 V div x 10 92 V Algebraic Addition With the VERTICAL MODE switc...

Страница 57: ...witch setting of 0 5 the voltage applied to that channel should not exceed approximately 4 volts c Use Channel 1 and Channel 2 POSITION control settings which most nearly position the signal on each channel to midscreen when viewed in either CH 1 or CH 2 VERTICAL MODE This ensures the greatest dynamic range for ADD mode operation d To attain similar response from each channel set both the Channel ...

Страница 58: ...display signals that contain undesirable frequency components These undesir able components can be eliminated through common mode rejection The precautions given under the preceding Algebraic Addition procedure should be observed EXAMPLE The signal applied to the Channel 1 input connector contains unwanted ac input power source frequency components see Figure 16A To remove the undesired components...

Страница 59: ... MODE and press in the CH 2 INVERT push button 5 Adjust the Channel 2 VOLTS DIV switch and VAR control so that the Channel 2 display is approxi mately the same amplitude as the undesired portion of the Channel 1 display see Figure 16A 6 Select ADD VERTICAL MODE and slightly readjust the Channel 2 VOLTS DIV VAR control for maxi mum cancellation of the undesired signal component see Figure 16B Time ...

Страница 60: ...witch to display one complete period of the waveform Ensure that the TIME PULL VAR control is in the calibrated detent 5 Position the display to place the time measurement points on the center horizontal graticule line see Fig ure 17 6 Measure the horizontal distance between the time measurement points 7 Calculate time duration using the following formula horizontal A SEC DIV distance x switch Tim...

Страница 61: ...on except that the measurements are made between the 10 and 90 points on the leading edge of the wave form see Figure 18 Fall time is measured between the 90 and 10 points on the trailing edge of the waveform 1 Preset instrument controls and obtain a Normal Sweep Display 2 Apply the signal to either vertical channel input connector and set the VERTICAL MODE switch to display the channel used 3 Set...

Страница 62: ...t on the waveform intersects the second vertical graticule line see Figure 18 Point A 8 Measure the horizontal distance between the 10 and 90 points and calculate the time duration using the following formula horizontal SEC DIV distance x switch _ divisions setting Rise Time magnification factor EXAMPLE The horizontal distance between the 10 and 90 points is 5 divisions see Figure 18 and the A SEC...

Страница 63: ... signals or select AUTO VERTICAL MODE if automatic selection is desired 7 If the two signals are of opposite polarity press in the CH 2 INVERT push button to invert the Channel 2 display signals may be of opposite polarity due to 180 phase difference if so note this for use later in the final calculation 8 Adjust the A TRIGGER LEVEL control for a stable display 9 Set the A TIME DIV switch to a swe...

Страница 64: ... EL 1 REFERENCE C HANN EL 2 Figure 19 Time difference between two time related pulses 1 Preset instrument controls and obtain a Normal Sweep Display then set the A TRIGGER SOURCE switch to CH 1 2 Set both AC GND DC switches to the same position depending on the type of coupling desired 3 Using either probes or coaxial cables with equal time delays connect a known reference signal to the Channel 1 ...

Страница 65: ...just the TIME PULL VAR control so that one reference signal cycle occupies exactly 8 horizontal graticule divisions at the 50 rise time points see Figure 20 Each division of the graticule now represents 45 of the cycle 360 t 8 divisions and the horizontal graticule calibration can be stated as 45 per division 10 Measure the horizontal difference between corre sponding points on the waveforms at a ...

Страница 66: ...zontal difference of 6 divisions between the two signals Substituting the given values in the phase difference formula Phase Difference 6 div x 4 5 div 27 Amplitude Comparison In some applications it may be necessary to establish a set of deflection factors other than those indicated by the VOLTS DIV switch settings This is useful for com paring unknown signals to a reference signal of known ampli...

Страница 67: ...llowing formula Arbitrary vertical VOLTS DIV Deflection conversion x switch Factor factor setting 3 Set the amplitude of the reference signal to an exact number of vertical divisions by adjusting the VOLTS DIV 7 Measure the vertical deflection of the unknown signal switch and VOLTS DIV VAR control in divisions and calculate its amplitude using the following formula 4 Establish a vertical conversio...

Страница 68: ...ocedure is as follows 1 Set the time duration of the reference signal to an exact number of horizontal divisions by adjusting the A SEC DIV switch and TIME PULL VAR control Arbitrary Deflection 1 5 x 1 V div 1 5 V div Factor 2 Establish a horizontal conversion factor using the following formula reference signal time duration must be known The amplitude of the unknown signal can then be deter mined...

Страница 69: ...ry deflection factor is then determined by substituting values in the formula Time Duration arbitrary deflection x factor horizontal distance divisions Arbitrary Deflection 1 37 x 50 is div 68 5 is div Factor 6 Frequency of the unknown signal can then be deter mined by calculating the reciprocal of its time duration The time duration of the unknown signal can then be computed by substituting value...

Страница 70: ...nterval at any location within the A Sweep interval When the A INTEN HORIZ MODE is selected the B SEC DIV switch setting determines the B Sweep speed and concurrently sets the length of the intensified zone on the A trace Using delayed sweep magnification may produce a display with some slight horizontal movement pulse jitter Pulse jitter includes not only the inherent uncertainty of triggering th...

Страница 71: ... SEC DIV switch to a sweep speed which displays at least one complete waveform cycle 6 Select the A INTEN HORIZ MODE and adjust the B DELAY TIME POSITION control to position the intensified zone to the portion of the display to be mag nified see Figure 22A 7 Set the B SEC DIV switch to a setting which inten sifies the full portion of the A trace to be magnified The intensified zone will be display...

Страница 72: ... Figure 22 Delayed sweep magnification ...

Страница 73: ...tal difference x divisions B SEC DIV switch setting Apparent Delayed Sweep Magnification A SEC DIV switch setting B SEC DIV switch setting EXAMPLE Determine the apparent magnification of a display with an A SEC DIV switch setting of 0 1 ms and a B SEC DIV switch setting of 1 ms Substituting the given values Apparent 1 x 10 4 s 102 100 Magnification 1 x 1 0 s Pulse Jitter Time Measurement 1 Perform...

Страница 74: ... Y TIME POSITION control is rotated 3 Adjust the B TRIGGER LEVEL control so the inten sified zone on the A trace is stable If an intensified zone cannot be obtained see step 4 4 Inability to intensify the desired portion of the trace indicates that the signal does not meet the triggering requirements If the condition cannot be remedied either by using the B Sweep triggering controls or by increasi...

Страница 75: ...the A SEC DIV switch to a sweep speed that displays the entire portion of the waveform for which time duration is to be measured 5 For the most accurate measurements set the B SEC DIV switch to the fastest sweep speed that provides a usable visible intensified zone 6 Adjust the B DELAY TIME POSITION control to move the start of the reference point so that it just touches the intersection of the si...

Страница 76: ...8 r V 3 S r b P u r c m m r u a c O R TIO N S OF W AVEFORM H ___ 1 ___ 1 J ___ __ B M A G N IFIE D B TRACE 62 Figure 24 Time duration using delayed sweep ...

Страница 77: ...witch to display the channel used 3 Set the appropriate VOLTS DIV switch and VAR control for an exact 5 division display 4 Vertically position the trace so that the zero refer ence of the waveform touches the 0 graticule line and the top of the waveform touches the 100 graticule line see Figure 25 5 Set the A SEC DIV switch for a single waveform display with the rise time spread horizontally as mu...

Страница 78: ...10 graticule line see Figure 25 Point A 9 Adjust the A TIME POSITION control to move the start of the measurement point left hand edge until it just touches the intersection of the signal and the 90 graticule line see Figure 25 Point B 10 Read the rise time on the LCD readout Time Difference Between Repetitive Pulses 1 Preset instrument controls and obtain a Normal Sweep Display 2 Apply the signal...

Страница 79: ...gure 26A Point A 7 Adjust the A TIME POSITION control to move the measurement point to the second pulse see Figure 26A Point B 8 Press in the B HORIZ MODE push button and adjust the A TIME POSITION control to superimpose the wave forms as shown in Figure 26B 1 4 1 TIME r DI FFE 3EIV CE f i 1 i 7 v 7 1N 1tN S IM b U ZONE A A TRACE VERTICAL REFERENCE LINE X I 5UP S AI R I VID VIPOL i B B TRACE 4 1 1...

Страница 80: ...IV switch to display the measure ment points of interest within the graticule area 6 Select the A INTEN HORIZ MODE and set the B SEC DIV switch to the fastest sweep speed that provides a usable visible intensified zone 7 Adjust the B DELAY TIME POSITION control to move the reference point to the reference signal see Figure 27A Point A 8 Adjust the A TIME POSITION control to move the measurement po...

Страница 81: ...Figure 27 Time difference between two time related pulses 66 2237 Operators ...

Страница 82: ...V dc peak ac between the positive and negative inputs or between the and inputs to ground If an overrange condition exists a 1 will be displayed on the left side of the LCD readout followed by three blank digits and a decimal point Should this occur select the next higher RANGE value The 500 V DC and 350 V RMS AC RANGE will not indicate an overrange condition when the input signal exceeds the maxi...

Страница 83: ...ssary select the next lower value range to obtain maximum resolution without overranging DC Volts I f the LCD readout exceeds 500 V immediately disconnect the test leads from the unit under test to prevent possible instrument damage 1 Rotate the RANGE FUNCTION switch to DC and select 500 V 2 Connect the negative lead to the reference point usually a ground or test point and connect the positive le...

Страница 84: ...options see your Tektronix Catalog or contact your Tektronix Field Office or representative OPTION 03 Option 03 100 V 200 V Power Transformer permits operation of the instrument from either a 100 V or a 200 V nominal ac power input source at a line frequency from 48 Hz to 440 Hz This option does not affect the basic instrument operating instructions presented in this manual 2337 Operators 69 ...

Страница 85: ...tive limits while items listed in the Supplemental Information column are either explanatory notes calibration setup descriptions per formance characteristics for which no absolute limits are specified or characteristics that are impractical to check Environmental characteristics of the 2337 are given in Table 6 All environmental tests performed meet the requirements of MlL T 28800B Type III Class...

Страница 86: ...alibrated VAR Range Continuously variable between VOLTS DIV switch settings Reduces deflection factor at least 2 5 to 1 on all VOLTS DIV switch settings Reduces deflection factor to at least 2 mV per division with VOLTS DIV switch set to 5 mV Frequency Response 6 division reference signal from a 25 2 source centered vertically with VOLTS DIV VAR control in cali brated detent 15 C to 40 C Dc to at ...

Страница 87: ...V per division 3 Ac Coupled Lower 3 dB Point IX Probe 10 Hz or less 3 10X Probe 1 Hz or less 3 Step Response 5 division reference signal dc coupled at all deflection factors from a 25 J2 source centered vertically with VOLTS DIV VAR control in cali brated detent BW LIMIT push button must be out for full bandwidth operation Performance Requirement not checked in Service Manual S 72 2337 Operators ...

Страница 88: ...C 3 5 ns or less Rise time is calculated from the formula 350 Rise Time ns BW MHz 40 C to 55 C 4 15 ns or less 3 Aberrations Positive Going Step Excluding ADD Mode 5 mV per division to 0 2 V per division 3 3 3 p p or less Negative Going Step Add 2 to all positive going step specifications checked at 5 mV per division Performance Requirement not checked in Service Manual 2337 Operators 73 ...

Страница 89: ...han 5 5 5 p p checked at 5 mV per division Temperature Effect Add 0 15 per C deviation to aber rations specifications from 25 C Common Mode Rejection Ratio A t least 10 to 1 at 50 MHz for common mode signals of 6 divisions or less VAR control adjusted for best CMRR at 10 mV per division at 50 kHz checked at 10 mV per division Channel 2 Invert Trace Shift Less than 0 4 division from center screen w...

Страница 90: ...or less 3 0 8 division trace shift when moving Input Coupling switch from GND to AC at 5 mV per division Attenuator Isolation CH 1 to CH 2 At least 100 to 1 With one vertical input set at 0 5 V per division apply 4 V p p 25 MHz signal set the other vertical input to 10 mV per division Check for less than 4 divisions of signal POSITION Control Range A t least 12 and 1 2 divisions from graticule cen...

Страница 91: ...from 5 mV per division to 5 V per division Double for each 10 C deviation from 25 C Chop Frequency 275 kHz 30 Input Characteristics Resistance 1 M ft 2 a Capacitance 20 pF 10 a Maximum Input Voltage DC Coupled 400 V dc peak ac or 500 V p p ac at 1 kHz or less 3 AC Coupled 400 V dc peak ac or 500 V p p ac at 1 kHz or less 3 Performance Requirement not checked in Service Manual 76 2337 Operators ...

Страница 92: ...Hz LF REJ Coupled Signal 0 3 division internal or 50 mV external from 50 kHz 10 kHz to 20 MHz increasing to 1 1 divisions internal or 150 mV external at 100 MHz Attenuates signals below 50 kHz 10 kHz 3 dB at 50 kHz HF REJ Coupled Signal 0 3 division internal or 50 mV external from 20 Hz 4 Hz to 50 kHz 10 kHz Attenuates signals below 20 Hz 4 Hz and above 50 kHz 10 kHz 3 dB at 20 Hz and 50 kHz DC Co...

Страница 93: ... at 100 MHz Trigger Jitter 0 2 division or less at 5 ns per division X10 MAG on with 100 MHz applied and at the rated trigger sensitivity VOLTS DIV VAR control must be in calibrated detent External Trigger Inputs Maximum Input Voltage 400 V dc peak ac or 500 V p p ac at 1 kHz or less 3 Input Resistance 1 MJ2 10 a Input Capacitance 20 pF 30 a LEVEL Control Range EXT A t least 1 V 2 V p p Performanc...

Страница 94: ...entering of Trigger Point Within 1 division of center screen Bandwidth To at least 80 MHz 4 division reference signal from a 25 J2 source centered vertically Delay Difference 3 ns 2 ns 5 division signal with 5 ns rise time or less from 25 S2 source centered vertically equal cable length from signal source to vertical channel and external trigger inputs terminated in 50 at each input Performance Re...

Страница 95: ...er division B Sweep 50 ms per division to 0 05 jus per division in a 1 2 5 sequence X10 MAG extends maximum sweep speed to 5 ns per division Accuracy 20 C to 30 C Unmagnified Magnified Accuracy specification applies over the full 10 divisions with X10 MAG on and off Exclude the first and last 40 ns of the sweep on all sweep speeds with X10 MAG on and off 2 3 15 C to 55 C 3 a 4 a Performance Requir...

Страница 96: ...brated settings of the SEC DIV switches Extends maximum A Sweep speed to at least 1 25 s per division A Sweep Length 10 5 to 11 5 divisions Checked at 1 ms per division A Trigger Holdoff VAR A t least 2 5 times the minimum holdoff at any sweep speed 3 Magnifier Registration 0 2 division from graticule center X10 MAG on to X10 MAG off POSITION Control Range Start of sweep must position to right of ...

Страница 97: ... DIV switch is at either 0 1 us per division or 0 05 us per division Exclude the first 0 25 division on all A Sweep speeds 15 C to 55 C 2 5 of reading 1 count 8 Delay Time Jitter 0 005 of 10 times the A SEC DIV switch setting less than one part in 20 000 over the full delay time range X Y OPERATION Deflection Factor Range 5 mV per division to 5 V per division in a 1 2 5 sequence No X axis variable...

Страница 98: ...z Y Axis Dc to at least 100 MHz Input Characteristics Resistance 1 M fi 2 a Capacitance 20 pF 10 a Phase Difference Between X and Y Axis Amplifiers 3 from dc to 200 kHz Accuracy X Axis 0 C to 40 C 5 of indicated deflection 15 C to 55 C 8 of indicated deflection 3 Performance Requirement not checked in Service Manual 2337 Operators 83 ...

Страница 99: ...ental Information CALIBRATOR Waveshape Positive going square wave Duty Cycle 50 10 Output Voltage 0 C to 40 C 0 2 V 1 15 C to 55 C 0 2 V 1 5 a Repetition Rate 1kHz 25 Output Impedance 200 2 1 Performance Requirement not checked in Service Manual 84 2337 Operators ...

Страница 100: ...ecreases intensity negative going signal increases intensity Usable Frequency Range Dc to 20 MHz Input Resistance 10 kJ2 6 Input Capacitance Less than 15 pF Maximum Input Voltage 25 V dc peak ac for dc to 10 MHz a For frequencies greater than 10 MHz use the following formula to calculate the maximum input voltage 3 V dc peak ac f MHz Input Coupling Dc Performance Requirement not checked in Service...

Страница 101: ... V Resolution at 200 mV full scale IOOjuV Accu racy 15 C to 35 C Within 0 15 of reading 1 count 15 C to 15 C Add 0 01 for every C below 15 C a 35 C to 55 C Add 0 01 for every C above 35 C a Relative Humidity greater than 80 Add 0 25 of reading 3 counts 3 Input Resistance 10 M ft 0 25 a All ranges Performance Requirement not checked in Service Manual 86 2337 Operators ...

Страница 102: ...st 100 dB at dc at least 60 dB at 50 and 60 Hz Response Time No Autorange Within 3 seconds Uprange Within 9 seconds Downrange Within 7 seconds Maximum Input Voltage positive Input to Ground 500 V dc peak ac at 60 Hz a negative Input to Ground 500 V dc peak ac at 60 Hz a Positive to Negative Inputs 500 V dc peak ac at 60 Hz a Performance Requirement not checked in Service Manual 2337 Operators 87 ...

Страница 103: ...RMS VOLTS Ac Coupled Ranges 2 V autorange to 200 mV 200 V autorange to 20 V 350 V Resolution at 200 mV full scale 100pV Crest Factor 6 a Epl Crest Factor t rms Maximum Measurable Peak Voltage 3X full scale 3 If V jn peak is greater than 3X full scale U NCAL will be displayed on the LCD readout Performance Requirement not checked in Service Manual 88 2337 Operators ...

Страница 104: ... 20 kHz 15 C to 15 C Add 0 05 for every C below 15 C a 35 C to 55 C Add 0 05 for every C above 35 C a Nonsinewave 15 C to 35 C Within 3 6 counts 50 Hz to 20 kHz 3 15 C to 15 C Add 0 05 for every C below 15 C a 35 C to 55 C Add 0 05 for every C above 35 C a Crest Factor Greater Than 3 Add 0 1 of reading 3 Performance Requirement not checked in Service Manual 2337 Operators 89 ...

Страница 105: ...itance 2 V Range Less than 220 pF a 200 V and 350 V Range Less than 150 pF a Common Mode Rejection Ratio 2 V Range At least 60 dB at 50 and 60 Hz 200 V and 350 V Range At least 53 dB at 50 and 60 Hz Response Time No Autorange Within 3 seconds Uprange Within 9 seconds Downrange Within 7 seconds Performance Requirement not checked in Service Manual 90 2337 Operators ...

Страница 106: ...e Input to Ground 500 V dc peak ac at 60 Hz a Positive to Negative Inputs 500 V dc peak ac at 60 Hz a Resistance Ranges 2 K 2 autorange to 200 2 200 K 2 autorange to 20 K 2 20 M 2 autorange to 2 M 2 Resolution at 200 2 full scale 0 1 2 Accuracy 15 C to 35 C Within 0 5 1 count 0 4 2 15 C to 15 C Add 0 05 for every C below 15 C a Performance Requirement not checked in Service Manual 2337 Operators 9...

Страница 107: ...e 35 C a Relative Humidity greater than 80 Add 1 of reading 8 counts 3 Response Time Less than 4 seconds Maximum Input Voltage positive Input to Ground 500 V dc peak ac at 60 Hz a negative Input to Ground 500 V dc peak ac at 60 Hz a Positive to Negative Inputs 500 V dc peak ac at 60 Hz a Performance Requirement not checked in Service Manual 92 2337 Operators REV JAN 1982 ...

Страница 108: ...C rms 115 V Nominal 100 V to 132 V 230 V Nominal 200 V to 250 V a Line Frequency 48 Hz to 440 Hz 3 Power Consumption Typical 35 W at 115 V 60 Hz 3 Maximum 60 W at 132 V 48 Hz 3 Measured at worst case load and frequency VA Maximum 75 VA 3 Performance Requirement not checked in Service Manual 2337 Operators 93 ...

Страница 109: ...Trace Rotation Range Adequate to align trace with horizontal graticule lines Standard Phosphor P31 a Raster Distortion Geometry Less than 0 1 division of bowing or tilt horizontal and vertical Nominal Accelerating Voltage 18 kV a Electrode Voltages to Ground Heater Voltage Between CRT Pins 1 and 14 6 3 Vrms 0 3 V elevated to 1960 V Performance Requirement not checked in Service Manual 94 2337 Oper...

Страница 110: ... hum idity requirements which are reduced to prevent potential damage to the LCD readout A ll other instrument char acteristics in this table meet the fu ll requirement o f Class 3 testing Temperature Operating 15 C to 55 C Nonoperating Storage 40 C to 80 C Altitude Operating To 15 000 ft Maximum operating temperature decreased 1 C per 1 000 ft above 5 000 ft Nonoperating Storage To 50 000 ft 2337...

Страница 111: ...ms duration 3 shocks per axis in each direction for a total of 18 shocks EMI Will meet MIL STD 461A requirements using procedures outlined in MIL STD 462 except where 10 V m is used in place of 1 V m Transportation Meets the limits of National Safe Transit Association test procedure 1A B with a 36 inch drop Humidity Operating Oscilloscope DMM 55 C 90 relative humidity for at least 72 hours as 35 C...

Страница 112: ...cessories and Accessory Pouch 8 0 kg 17 61b Shipping Weight Domestic 10 9 kg 24 1 lb Export 15 0 kg 33 1 lb Height With Feet and Pouch 210 mm 8 3 in Without Pouch 135 mm 5 3 in Width With Handle 315 mm 12 4 in Without Handle 274 mm 10 8 in Depth With Front Cover 432 mm 17 0 in With Handle Extended 527 mm 20 8 in 2337 Operators 97 ...

Страница 113: ...R OPTION 03 Voltage Ranges AC rms 100 V Nominal 90 V to 115 V a 200 V Nominal 180 V to 230 V a Line Frequency 48 Hz to 440 Hz a Power Consumption Typical 35 W at 100 V 60 Hz a Maximum 60 W at 115 V 48 Hz a Measured at worst case load and frequency VA Maximum 75 VA a Performance Requirement not checked in Service Manual 98 2337 Operators ...

Страница 114: ...essory Pouch Zip Lock 016 0537 00 Option A3 2 5 meter length 161 0104 05 1 Operators Manual 070 4119 00 Option A4 2 5 meter length 161 0104 08 1 Service Manual 070 4120 00 2 Fuses 1 0 A AGC Fast Blow 159 0022 00 1 Fuse 0 5 A AGC Fast Blow 159 0025 00 1 Crt Filter Blue Plastic installed 337 2760 00 1 Crt Filter Clear Plastic 337 2781 00 1 Detachable Power Cord installed 161 0104 00 1 Pair Test Lead...

Страница 115: ...0 mm 115 V 230 V 230 V 200 V to 250 V OPTION A2 UK 240 V 13A 0 5 A 5 X 20 mm 5 X 20 mm 115 V 230 V 230 V 200 V to 250 V OPTION A3 AUSTRALIA 240V 10 A 0 5 A 5 X 20 mm 5 X 20 mm 115 V 230 V 230 V 200 V to 250 V OPTION A4 NORTH AMERICA 240 V 15 A 0 5 A FB AGC 3AG AGC 3AG 115 V 230 V 230 V 200 V to 250 V OPTION 03 JAPAN STANDARD 100 V JAPAN 200 V 1 0 A FB AGC 3AG 0 5 A FB AGC 3AG AGC 3AG AGC 3AG 100 V...

Страница 116: ...NOTES ...

Страница 117: ...NOTES ...

Страница 118: ...ion of Tektronix Inc Products of Tektronix Inc and its subsidiaries are covered by U S and foreign patents and or pending patents TEKTRONIX TEK SCOPE MOBILE and are registered trademarks of Tektronix Inc TELEQUIPMENT is a registered trademark of Tektronix U K Limited Printed in U S A Specification and price change priviledges are reserved ...

Страница 119: ...ts 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 manufacture is identified as follows B000000 Tektronix Inc Beaverton Oregon USA 100000 200000 300000 700000 Tektronix Guernsey Ltd Channel Islands Tektronix United Kingdom Ltd London Sony Tektronix Japan Tektronix Holland NV Heerenveen Th...

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