Tektronix 2212 Скачать руководство пользователя

Страница: 67 / 250

Содержание 2212

Страница 1: ...User Manual Tektronix 2212 Digital Storage Analog Oscilloscope 070 8438 00 Please check for CHANGE INFORMATION at the rear of this manual First Printing April 1992 Rev July 1992 Rev December 1992 ...

Страница 2: ...00 Tektronix Inc Beaverton Oregon U S A Sony I Tektronix Japan Tektronix Holland N V Heerenveen The Netherlands Tektronix Inc Hong Kong Instruments manufactured for Tektronix by external vendors outside the United States are assigned a two digit alpha code to identify the country of manufacture e g J3 for Japan HK for Hong Kong IL for Israel etc Tektronix Inc P O Box 500 Beaverton OR 97077 Printed...

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

Страница 4: ...I ...

Страница 5: ...ostal 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 2212 OSCILLOSCOPE AND ALL INSTALLED OPTIONS in Obereinstimmung mit den Bestimmungen der Ambtsblatt Verfugung 1046 1984 funkentst6rt ist Der Deutschen Bundespost wurde das lnverkehrbringen dieses Gerates angezeigt und die Berech...

Страница 6: ... Gerat eingesetzt wird muB ebenfalls den Voraussetzungen nach Par 2 Ziff 1 der Vfg 1046 1984 genugen NOTICE to the user operator The German Postal Services requires that this equipment when used in a test set up 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 Das Gerat dart in MeBaufstellung nur betri...

Страница 7: ... Measurement Examples At A Glance describes the locations and purposes of the various function blocks on the front panel and the rear panel of the instrument In Detail provides further detail on aspects of the 2212 building on the infomation contained in At A Glance The topics of this chapter are 2212 User Manual General The Display Vertical Operation Horizontal Operation Trigger Cursors Storage S...

Страница 8: ...at power up Appendix E Glossary mul Index Tlw Glosscuy pruvid s descriptions of expressions used in Lhis manual and Lhe ndex helps you locate information quickly Related Documentation ii Ollwr dor umcnlation for tho 2212 oscillusco1w include The 2212 Service Manual Tektronix Part Number 070 84 HlO that provides information to maintain and service the 2212 The 2212 Quick Rrforem r Tektronix Part Nu...

Страница 9: ...1 3 Consignes de Securite 1 5 Preparation for Use 1 7 Tutorial Measuring Signals Initial Setup 2 1 Probe Compensation 2 3 Low Frequency Compensation 2 3 Non Store Displays 2 5 Normal Sweep Display 2 6 Magnified Sweep Display 2 7 Alternating Magnified 2 7 Sweep Display 2 7 X Y Display 2 8 Single Sweep Display 2 9 Digital Storage Displays 2 11 Store Mode Display 2 12 2212 User Manual iii ...

Страница 10: ...rement 3 12 Time Difference Measurement Between Two Time Related Pulses 3 14 Time Ratio Measurement 3 16 Phase Difference Measurement 3 18 Small Angle Phase Difference Measurement 3 20 Percent Modulation Measurement 3 22 TV Line Signal Measurement 3 24 TV Field Signal Measurement 3 25 Digital Storage Measurement Examples 3 27 Waveform Comparison Measurement 3 28 Rise Time Measurement in Store Mode...

Страница 11: ...itch 5 9 CH 2 INVERT Switch 5 10 VOLTS DIV Switches 5 11 AC GND DC Input Coupling Switches 5 11 VARiable VOLTS DIV VAR Controls 5 12 Band Width Limit Switch 5 12 CH 1 OR X and CH 2 ORY Input Connectors 5 13 Horizontal Operation 5 15 Horizontal Controls and Switches 5 16 Horizontal POSITION Control 5 16 TRACE SEParation TRACE SEP Control 5 17 SEC DIV Switch 5 18 Xl X10 X50 Magnify Switch 5 19 Varia...

Страница 12: ...lV2 Cursor Function 5 32 LlV Cursor Function 5 32 RATIO LlVl LlV2 i lV Function 5 33 LlVX Cursor Function 5 33 LlVY Cursor Function 5 33 LlT and RATIO Cursor Function 5 35 LlT Function 5 35 RATIO i lT Function 5 35 1 LlT and PHASE Cursor Function 5 36 1 LlT Function 5 36 PHASE 1 LlT Function 5 36 Storage 5 37 Storage Controls 5 38 Store ON Switch 5 38 PRETRIG Switch 5 38 HOLD ON OFF Switch 5 38 RE...

Страница 13: ... 5 55 Parallel Printer Interface Connector 5 58 CRT Readout 5 61 Top Row Readouts 5 63 Cursor Type 5 63 Cursor Delta Value 5 63 Trigger 5 64 Trigger Value 5 64 Trigger Source 5 64 Bottom Row Readouts 5 65 CH 1 Vertical Deflection 5 65 ADD 5 65 CH 2 Vertical Deflection 5 65 Horizontal Deflection 5 66 Acquisition Mode 5 66 ADDR 5 66 REM 5 66 Probes 5 67 Passive Voltage Probes 5 68 General Purpose Hi...

Страница 14: ... A 4 Option 18 A 4 Option 23 A 4 Optional Accessories A 5 Instrument Enhancements A 5 Viewing Hoods A 5 Fuses A 5 Voltage Probes A 5 Current Probes A 6 Oscilloscope Cameras A 6 Appendix B Specifications General Product Description B 1 User Interface B 1 Indicators B 1 Signal Acquisition System B 2 Vertical Non Storage Deflection System B 4 Horizontal Display System B 5 Horizontal Non Storage Displ...

Страница 15: ...C 1 Initial Setup Procedure C 2 Test Equipment Required C 2 Preparation C 6 Limits and Tolerances C 6 Index to Performance Tests C 7 Vertical Checks C 8 Horizontal Checks C 13 Triggering Checks C 18 Probe Adjust Check C 26 X Y Display Checks C 27 Appendix D Control Settings at Power up Default Control Settings D 1 Appendix E Glossary Index Change Information 2212 User Manual ix ...

Страница 16: ...dulation 3 22 Figure 3 12 Waveform Comparison Neasurement 3 28 Figure 5 1 Power Display Controls and Power Indicator 5 4 Figure 5 2 Vertical Controls and Connectors 5 8 Figure 5 3 Horizontal Controls and Switches 5 16 Figure 5 4 Trigger Controls and Connector 5 21 Figure 5 5 Cursor Controls 5 30 Figure 5 6 Storage Controls 5 37 Figure 5 7 SETUP Controls 5 42 Figure 5 8 Hardcopy Menu Settings 5 45 ...

Страница 17: ...B 8 Warranted Characteristics Horizontal System B 17 Table B 9 Warranted Characteristics Triggering System B 18 Table B 10 Warranted Characteristics Storage System B 22 Table B 11 Warranted Characteristics Readout Display System B 23 Table B 12 Warranted Characteristics X Y Display System B 25 Table B 13 Warranted Characteristics Probe Adjust Output B 26 Table B 14 Warranted Characteristics Power ...

Страница 18: ...xii Contents ...

Страница 19: ...l Instrument features include DC to 60 MHz Analog non storage bandwidth DC to 10 MHz digital storage bandwidth Auto Set up Horizontal alternate magnifier CRT readout Cursor measurement display Parallel Printer Communication Interface Centronics compatible RS 232 C Communication Control optional IEEE 488 2 1987 GPIB Communication Interface optional If you need more information about your 2212 Oscil...

Страница 20: ...r between probe common and earth ground Symbols and Terms These two terms appear in manuals WARNING statements identify conditions or practices that could result in damage to the equipment or other property statements identify conditions or practices that could result in personal injury or loss of live These two terms appear on equipment CAUTION indicates a personal injury hazard not immedi ately ...

Страница 21: ...nding conductor of the power cord To avoid electrical shock plug the power cord into a properly wired receptacle before making any connections to the product input or output terminals A protective ground connection by way of the ground conductor in the power cord is essential for safe opera tion Danger Arising from Loss of Ground Upon loss of the protec tive ground connection all accessible conduc...

Страница 22: ...ex plosion do not operate this instrument in an explosive atmos phere Do Not Remove Covers or Panels To avoid personal m1ury do not remove the instrument covers or panels Do not oper ate the instrument without covers and panels properly in stalled Overview ...

Страница 23: ...er la deterioration de l appareil ou de tout autre equipment Les paragraphes intitules WARNING AVERTISSEMENT indiquen es c1rconstances dangereuses pour l utilisateur danger de mart ou risque de blessure Static Sensitive Devices Composants sensible a statique Termes repereres graves sur l appareil CAUTION ATTENTION ce mot identifie les zones de risque non immediatement perceptibles ou un risque eve...

Страница 24: ...tion de masse En cas de coupure de la connexion de masse taus les elements conducteurs accessible y compris boutons et commandes apparissant isolants peuvent provoquer un choc electrique Utuliser le cordon d alimentation approprie N utiliser que le cordon d alimentation et la prise recommandes pour votre appareil Utiliser un cordon d alimentationen parfait etat Seul un personnel qualifie peut proc...

Страница 25: ...ep 3 Check the fuse located on the rear panel to be sure it is of the proper type and rating Use the following procedure to check that the proper fuse is installed or to install a replacement fuse Step 1 Unplug the power cord from the power input source Step 2 Press in the fuse holder cap and release it with a slight counterclockwise rotation Step 3 Pull the cap with the attached fuse inside out o...

Страница 26: ...low to prevent instrument damage from internally generated heat Before turning on the power verify that the spaces around the air intake holes on the bottom sides top and rear cabinet are free of any obstruction to airflow Step 6 Turn on your oscilloscope by pressing in the POWER button Observe that the POWER ON indicator located above the button comes on After a few seconds a trace appears on the...

Страница 27: ...12 Initial Setup The following procedure will allow you to set up and operate the instrument to obtain the most commonly used oscilloscope dis plays Step 1 Verify that the POWER switch is OFF switch is in the OUT position Step 2 Plug the power cord into the ac power outlet Step 3 Press in the POWER switch ON and let the instrument warm up 20 minutes is recommended for best accuracy Step 4 Press th...

Страница 28: ...N Magnifier ALTernate MAGNifier Trigger HOLDOFF SOURCE MODE LEVEL SLOPE COUPLING Cursor Cursor ON OFF Cursor Type POSITION Storage STORE ON OFF Desired brightness Best trace definition ON with desired brightness CH 1 Midrange lOmV DC Calibrated Off 0 2 ms Calibrated Midrange Xl Off MIN CH 1 P P AUTO For a suitable display with signal applied Positive going DC ON Vl Midrange OFF Tutorial ...

Страница 29: ...probe tips to the PROBE ADJUST connector and the probe ground leads to scope ground Step 4 Press the AUTO SETUP button Step 5 Set Step 6 Step 7 Step 8 Step 9 Vertical MODE CH 1 CH 1 VOLTS DIV 0 1 V CH 2 VOLTS DIV 0 1 V Vertically center the PROBE ADJUST square wave signal If necessary adjust the Trigger LEVEL control to obtain a stable display on the positive SLOPE Check the square wave display fo...

Страница 30: ...robe Compensation NOTE CORRECT FLAT OVER COMPENSATED OVERSHOOT UNDER COMPENSATED ROUOFFJ Refer to the instruction manual supplied with the probe for more complete information on the probe accessories and probe compensation Tutorial ...

Страница 31: ...he capabilities of the 2212 oscilloscope in the Non Store mode The following procedures explain how to set up and use the Non Store Analog capabilities of the 2212 Normal Sweep Display Magnified Sweep Display Alternate Magnified Sweep Display X Y Display Single Sweep Display 2212 User Manual 2 5 ...

Страница 32: ...he CH 1 VOLTS DIV switch to reduce the vertical display size Center the compressed display using the Vertical and Horizontal POSITION controls Release the BEAM FIND button Press the AUTO SETUP button which automatically sets the vertical horizontal triggering and display to produce a usable stable triggered display Step 4 Set the CHl VOLTS DIV switch and adjust the Vertical and Horizontal POSITION...

Страница 33: ... 1 division in the X50 Magnify You may change the SEC DIV switch setting as required Step 4 Set the Horizontal Magnify switch to the Xl0 or the X50 position Step 5 The magnified sweep rate is displayed in the crt readout Alternating Magnified Sweep Display With the 2212 in the normal continuous mode you can use the following procedure to display the unmagnified sweep and the magnified sweep on the...

Страница 34: ...e BEAM FIND button while adjusting the CH 1 and CH 2 VOLTS DIV switches until the display is reduced in size both vertically and horizontally With the BEAM FIND button still pressed in center the compressed display with the POSITION controls CH 2 POSITION control for vertical movement Horizontal POSITION control for horizontal movement Release the BEAM FIND button and adjust the FOCUS control for ...

Страница 35: ...NORM and adjust the Trigger LEVEL control carefully until the display is stable Step 5 Toggle the Trigger MODE to SGL SWP and check that the sweep triggers when the RESET button is pressed If it does not trigger readjust the Trigger LEVEL control slightly so that the sweep triggers each time the RESET button is pressed If no trigger signal is present and the RESET button is pressed the READY indic...

Страница 36: ...pulse occurs a sweep will be started and one single sweep will be displayed Step 9 When the single sweep has been triggered and com pleted another sweep cannot be started until the RESET button is pressed again to rearm the sweep circuit 2 10 Tutorial ...

Страница 37: ...chapter intends to help you make Digital Storage measure ments in Store mode Store Mode Display HOLD Mode Display SAVE RECALL Mode Display Single Sweep Mode Display X Y Store Mode Display Aliases in Store Mode 2212 User Manual 2 11 ...

Страница 38: ...l display and acquire wave forms in ROLL mode from 50 s division to 0 1 s division Signals are continously acquired and displayed Triggers are disabled in ROLL mode except in SGL SWP In RECORD and ROLL digital store mode no SGL SWEEP you can use the following procedure to display your signal Step 1 Switch the 2212 on and obtain a baseline display in Non Store mode Step 2 Set the Store ON switch to...

Страница 39: ...OLD button while in RECORD mode causes the current display to be stopped immediately and the display is not updated Step 3 When you press the HOLD button again while in RECORD mode you exit the HOLD mode and the acquisition is restarted Step 4 Pressing the HOLD button while in ROLL mode causes the current acquisition to be stopped immediately Step 5 When you press the HOLD button again while in RO...

Страница 40: ...form on the crt together with the waveform already displayed The reference waveform remains stored in memory when you switch to Non Store mode You may recall it at any time the Store mode is active The reference waveform is not saved when the oscilloscope is turned off Step 4 The Reference Position control TRace SEParation control can be used to position the reference display vertically It may be ...

Страница 41: ...dated When the 2212 is in the SGL Sweep Record mode theVertical MODE in ALT and the Triggger SOURCE in VERT MODE the triggered channel behaves as just described The non triggered channel is not updated When you press the RESET button again the second channel is updated For SGL Sweep Record mode you can use the following procedure Step 1 Switch the 2212 on and obtain a baseline display in Non Store...

Страница 42: ...er circuit is set and ready to update the display when a trigger is received Step 8 When the acquisition system has been triggered and the display is updated the sweep logic circuit is locked out Another acquisition cannot be generated until the SGL SWP RESET button is pressed again to set the sweep to the READY state Step 9 Disconnect the test signal from the CHl or X input and apply the random s...

Страница 43: ...ng rate Seting of the PRE TRIG 25 75 switch Until a trigger occurs the pretrigger data is continually updated but the RECORD display is not updated until a complete new waveform is acquired With the 2212 in SGL Sweep Roll mode the Vertical MODE is set to ALT and Triggger SOURCE in VERT MODE the triggered chan nel behaves as just described The non triggered channel is blanked When you press the RES...

Страница 44: ...isplay when a trigger is received Step 8 When the single sweep has been triggered and the dis play is updated the sweep logic circuit is locked out Another acquisition cannot be generated until the RESET button is pressed again to set the acquisition system to the READY state Step 9 Disconnect the test signal from the CH1 or X input ap ply the random signal to the CH 1 OR X input and press the RES...

Страница 45: ... signal If the SEC DIV is in one of the two EXT CLOCK positions the sample rate is determined by the CLOCK frequency Step 7 Increase the INTENSITY until the display is visible If the display can not be made visible with the INTENSITY control at midrange press and hold in the BEAM FIND button while adjusting the CH 1 and CH 2 VOLTS DIV switches until the display is reduced in size both vertically a...

Страница 46: ...ustrates this by showing a slower aliased waveform on top of the actual input waveform Actual High Frequency Waveform Sampled Points Apparent Low Frequency Waveform Due to Aliasing Figure 2 2 Aliasing In digital sampling a more accurate reproduction of a signal is possible when more samples of the signal are obtained The instru ment samples 4000 times across the 10 horizontal divisions of the grat...

Страница 47: ...m will be accurately reproduced within 95 of its true amplitude This is the accuracy required for useful storage bandwidth If the input frequency is increased beyond 8 MHz the samples will soon become less than two times per period This occurs at 10 MHz for a 20 MHz sample rate Past this point information sampled from two different sine wave periods will be used to reconstruct the displayed wavefo...

Страница 48: ... to determine if the input signal is higher in frequency than the apparent sig nal being displayed Ensure that this display is being triggered TRIG D LED on The second possibility is to set the SEC DIV switch to a faster sweep rate so that the number of samples per cycle of the input signal is increased The maximum digital sweep speed avail able on the 2212 for Store mode is 20 µs per division Tut...

Страница 49: ...AC Peak to Peak Voltage Measurement Voltage Ratio Measurement Algebraic Addition Measurement Common Mode Rejection Measurement Rise Time Measurement Frequency Measurement Time Difference Measurement Time Ratio Measurement Phase Difference Measurement Small Angle Phase Difference Measurement Percent Modulation Measurement TV Line Signal Measurement TV Field Signal Measurement 2212 User Manual 3 1 ...

Страница 50: ...to make voltage meas urements between any two points on a waveform INACTWE CURSOR ACTIVE CURSOR Figure 3 1 Peak to Peak Voltage Waveform Measurement Step 1 Switch the 221_2 on and obtain a baseline display in Non Store mode Step 2 Apply the AC signal to be measured to either vertical channel input connector and set the Vertical MODE to display the channel used 3 2 Measurement Examples ...

Страница 51: ...ertical channel selected Two horizon tal cursors appear on the screen Step 8 With the TOGGLE CURSOR in Track mode position the inactive cursor to the bottom of the waveform using the Cursor POSITION control Set the TOGGLE CURSOR switch to the Delta cursor mode and position the active cursor to the top of the waveform using the Cursor Position control Step 9 Read the voltage difference between the ...

Страница 52: ...02 5 Figure 3 2 Voltage Ratios H1 ACTIVE CURSOR INACTIVE CURSOR To measure a voltage ratio in the situation of two separate signals use the following procedure Step 1 Switch the 2212 on and obtain a baseline display in Non Store mode Step 2 Apply the signal to be referenced to to either the CHl OR X or CH 2 OR Y input connector and toggle the Vertical MODE switch to display the channel used 3 4 Me...

Страница 53: ...he crt screen Step 8 Place one cursor at the top and one at the bottom of the reference waveform using the Cursor POSITION and the TOGGLE CURSOR control The cursors must be exactly five divisions apart Ratio 100 will appear in the crt readout Step 9 Remove the reference signal and apply the signal to be measured to the same input connector DO NOT change the VOLTS DIV or VARiable VOLTS DIV setting ...

Страница 54: ...erved when using the ADD mode 1 Do not exceed the input voltage rating of the oscilloscope 2 Do not apply signals that exceed the equivalent of about eight times the VOLTS DIV switch setting since large voltages may distort the display For example with a VOLTS DIV switch setting of 0 5 V the voltage applied to the input channel should not exceed 4 V Example Suppose the graticule center line as O V...

Страница 55: ...SIONS OF NEGATIVE OFFSET CJ RESULTING DISPLAY J I n 0 20V 100 M n 0 1 00 nn J I n 0 20V J I 20 J I 20 Non Storage Examples Tri AC l H1 J I I _ SIT VE LEVEL 11 µs Tri AC I H1 GATl E U VEL 11µs Tri I A ER I I I Hµs Figure 3 3 Algebraic Addition of a de ac Signal 2212 User Manual 3 7 ...

Страница 56: ...jection Observe the precautions given under the preceding Algebraic Addition proce dure D CH1 SIGNAL WITH UNWANTE FREQUENCY COMPONENT D__ CH2SIGNAL FROMUNWANTE FREQUENCY SOURCE INVERTED Tri V _ r 1 11 20V 20V A CH1 AND CH2 SIGNALS AC IIJ RT V __ __ V 10 ns Tri AC 11 RT 100 CH1 SIGNAL W D j j j l l j COMPONENT _ CANCEUED OUT IJ ll BJ RESULTANT SIGNAL 10111s Figure 3 4 Common Mode Rejection Measurem...

Страница 57: ... components to the CH1 OR X input connector Step 3 Apply the unwanted signal to the CH 2 ORY input Step 4 Toggle the Vertical MODE switch to ALT and set the CH 2 INVert switch to INVert Step 5 Adjust the CH 2 VOLTS DIV switch and VARiable control to make the CH 2 display approximately the same amplitude as the undesired portion of the CH 1 display see Figure 3 4A Step 6 Toggle the Vertical MODE sw...

Страница 58: ...1 _ CURSOR r r i 1 i fr t r 90 POINT 10 POINT j r a ii _ l llflo 1i T 2V 2Cµs Figure 3 5 Rise Time Measurement ACTIVE CURSOR To measure the rise time of a waveform you can use the following procedure Step 1 Switch the 2212 on and obtain a baseline display in Non Store mode Step 2 Apply a signal with an amplitude of exact five divisions to either vertical channel input connector and set the Vertica...

Страница 59: ...ignals that have a rise time ofless than 0 5 µs Step 5 Set Cursors ON Off switch to ON Toggle the 11Vl 11V2 11T 1 11T switch to the 11T position Observe that two ver tical cursors appear on the crt screen Step 6 Position the cursors to the 10 and 90 points of the waveform using the Cursor POSITION control and the TOGGLE CURSOR switch Step 7 You can read the time difference rise time between the tw...

Страница 60: ...ode Figure 3 6 Frequency Measurement Step 2 Apply the signal to either vertical channel input connector and toggle the Vertical MODE switch to display the channel used Step 3 Adjust the Trigger LEVEL control to obtain a stable display Step 4 Set the SEC DIV control to display at least one complete period of the waveform Make sure that the SEC DIV control is in the calibrated position 3 12 Measurem...

Страница 61: ...1 b T position Observe that two vertical cursors appear on the crt Step 7 Position the cursors to the zero crossing points of the waveform using the Cursor POSITION control and the TOGGGLE CURSOR switch see Figure 3 6 Step 8 You can read the frequency of the waveform from the crt readout display 2212 User Manual 3 13 ...

Страница 62: ...e the following procedure to measure time difference see Figure 3 7 Step 1 Switch the 2212 on and obtain a baseline display in Non Store mode LiT 4 50 100 90 10 0 2V I I INACTIVE CURSOR 111S T i i 1V AC 5111S V RT REFERENCE SIGNAL llf ACTIVE CURSOR COMPARISON SIGNAL Figure 3 7 Time Difference Measurement between two Time related Pulses Step 2 Toggle the Trigger SOURCE switch to CH 1 Step 3 Set bot...

Страница 63: ...display Step 8 Set the SEC DIV switch to a sweep speed which provides three or more divisions of horizontal separation between the reference points on the two displays Center the displays vertically see Figure 4 7 Step 9 Set Cursors ON Off switch to ON Step 10 Toggle the iVl iVZ iT 1 iT switch to the iT position Observe that two vertical cursors appear on the crt screen Step 11 Position the cursor...

Страница 64: ...me ratio see Figure 3 8 RA1 100 1 2V 10 3 INACTIVE CURSOR ACTIVE CURSOR I 9 i i 1V Tri AC CH1 V 5ms REFERENCE INTERVAL I 5 DIVISIONS 100 Figure 3 8 Time Ratio Measurement TEST SIGN Step 1 Switch the 2212 on and obtain a baseline display in Non Store mode Step 2 Apply the reference signal to either the CH 1 OR X or CH 2 ORY input connector and toggle the Vertical MODE switch to display the channel ...

Страница 65: ...serve that two vertical cursors appear on the crt screen Step 7 If the test interval is part of a different signal apply the test signal to the unused vertical input and select the Vertical Mode to display the channel used Do not change the SEC DIV or VARiable SEC DIV setting Step 8 Position one cursor to the left edge of the test interval and the other cursor to the right edge using the Cursor PO...

Страница 66: ...e measurement can be made up to the frequency limit of the vertical system ZERO CROSSING COMPARISON SIGNAL ZERO z G J t tt it t Hr r l t flci t t 11 SIGNAL INACTIVE CURSOR ACTIVE CURSOR Figure 3 9 Phase Difference Measurement To obtain a reliable measurement result use either probes or coaxial cables with equal time delays You can use the following procedure to make a phase comparison measurement ...

Страница 67: ...otal phase shift between the two signals Step 6 Adjust both VOLTS DIV switches and both VARiable VOLTS DIV controls so that the displays have the same amplitude Step 7 Adjust the Trigger LEVEL control for a stable display Step 8 Set the SEC DIV and VARiable SEC DIV controls for one period of the reference waveform to be exactly five divi sions Position the waveform to the zero crossing point Step ...

Страница 68: ...phase difference comparison use the following proce dure see Figure 3 10 PH SE 1 8 0 ZERO CROSSING J f t t i o _ 1 o REFERENCE SIGNAL INACTIVE 2V CURSOR L J _ L l 1 ACTIVE CURSOR ZERO CROSSING C OMPARISON SIGNAL Figure 3 10 Small angle Phase Difference Measurement Step 1 Perform steps 1 through 6 of the preceding Phase Difference Measurement procedure to obtain a five division display of one cycle...

Страница 69: ...agnify and use the Horizontal POSITION and the Cursor POSITION control to align the reference zero crossing with one cursor Step 4 Align the other cursor with the second comparison zero crossing see Figure 3 10 Step 5 You can read the magnified phase difference in degrees from the crt readout Obtain the correct phase difference between the two signals by dividing the reading by 10 2212 User Manual...

Страница 70: ...itch the 2212 on and obtain a baseline display in Non Store mode 100 1 f 9 l C l 0 ACTIVE CURSOR INACTIVE CURSOR Figure 3 11 Percentage Modulation Step 2 Apply the signal to either vertical channel input connec tor and toggle the Vertical MODE switch to display the channel used Step 3 Adjust the Trigger LEVEL control to obtain a stable display 3 22 Measurement Examples ...

Страница 71: ... the J Vl J V2 J T 1 J T switch to the J Vl or J V2 position depends on channel used Observe that two horizontal cursors appear on the crt screen Set the VOLTS DIV in the UNCAL position This will activate the RATIO measurement mode Position the cursors using the Cursor POSITION control as shown by dimension D in Figure 3 11 The 2212 will display the percentage modulation in the top left hand corne...

Страница 72: ...nput connector and toggle the Vertical MODE switch to display the channel used Step 4 Set the appropriate VOLTS DIV switch to display 1 0 division or more of the composite video signal Step 5 Set the SEC DIV switch to 10 µs Step 6 Set the Trigger SLOPE switch to either positive slope for positive going TV signal sync pulses or negative slope for negative going TV signal sync pulses NOTE To examine...

Страница 73: ... either positive slope for positive going TV signal sync pulses or negative slope for negative going TV signal sync pulses Step 6 If you want to change the TV field that is displayed mo mentarily interrupt the trigger signal by toggling the AC GND DC switch to GND and then back to AC until the desired TV field is displayed NOTE To examine a TV Field signal in more detail toggle the Horizontal Magn...

Страница 74: ...3 26 Measurement Examples ...

Страница 75: ...gital stor age displays in Section 2 Digital Storage Displays The 2212 can make accurate timing measurements when the T Cursors are enabled in Store mode In this mode the cursors are attached to the waveform Waveform Based Cursors This feature can prove especially useful with signals which require a SEC DIV setting of 20 µs NOTE When switching from NON Store to Store the resolution of the T readou...

Страница 76: ...ence func tion of the 2212 You can use the following procedure to make a waveform comparison measurement See Figure 3 12 REFERENCE WAVEFORM COMPARISON WAVEFORM Figure 3 12 Waveform Comparison Measurement Step 1 Switch the 2212 on and obtain a baseline display in Non Store mode Step 2 After obtaining a display of the signal to be measured in Non Store mode toggle the STORAGE ON Off switch to the ON...

Страница 77: ...urement from the graticule Cursors may be used to determine volt age or time differences Step 7 Acquire the new waveform that is to be compared with the reference waveform Step 8 Push the RECALL ON Off switch to display the stored reference waveform on the crt screen NOTE A RECALLed reference waveform will remain displayed until the SA VE buton is pushed again Then a new reference waveform is stor...

Страница 78: ...rm touches the 0 graticule line and the top of the wave form the 100 graticule line NOTE Make sure that the VOLTS DIV switch is in the calibrated position with risetimes faster than 0 5 µs Step 5 Set Cursors ON Off switch to ON Step 6 Toggle the 1Wl W2 T 1 H switch to the T position Observe that two vertical cursors appear on the crt Step 7 Press STORAGE ON Off switch to Store ON This will result ...

Страница 79: ... The cursors will be magnified with the wave form and may disappear off screen Step 11 Use the Horizontal POSITION control to position the trace that one of the cursors appears on the screen Step 12 Use the Cursor POSITION control and the TOGGLE CURSOR switch to position the cursors to the 10 and 90 points of the expanded display Step 13 You can read the time difference between the two cursors fro...

Страница 80: ...3 32 Measurement Examples ...

Страница 81: ...rtical section on the front panel of the 2212 oscilloscope The front panel map of the Storage system the Setup section and the Cursor section shows the locations and purposes of the various knobs and buttons in the vertical section on the front panel of the 2212 oscilloscope The front panel map of the Triggering andHorizontal system shows the locations and purposes of the various knobs and buttons...

Страница 82: ...ensity Switch page 55 DIGITAL STORAGE OSCILLOSCOPE I C O I I Ot e e f C I I 91 I Internal Graticule Area page 5 3 4 2 _ Bottom Row CRT Readout Area page 5 65 INTENSITY setting page 5 4 I 0 BEAMFIND POWER on 1 i FOCUS Control page5 5 BEAMFIND Switch page 5 5 Power ON Switch page 5 5 At a Glance ...

Страница 83: ... Digital STORAGE ON Switch page 5 38 Function page 5 40 5 45 2212 User Manual RECALL Front Panel Setup Switch page 5 43 CURSOR Measurement ON Switch page 5 30 At a Glance Track Model Delta Mode Switch page 5 31 AUTO Cursor Meas PRETRIG selection Switch page 5 38 Setup Switch page 5 42 MENU Function page 5 43 5 45 5 54 5 57 Cursor POSITION page 5 31 4 3 ...

Страница 84: ...tch Connector Channel 1 page 5 13 page 5 12 4 4 Vertical Vertical POSITION MODE Channel 2 page 5 9 Scale Switch page 5 9 page 5 11 Channel 2 Input Connector page 5 13 Channel 2 Vertical INVERT Scale Switch page 5 10 Bandwidth Limit Switch Channel 2 page 5 12 Channel 2 page 5 11 Scale page 5 11 Channel 2 Coupling Switch page 5 11 At a Glance ...

Страница 85: ... a Glance Trigger Level Control page 5 22 EXI emal Z Axis Horizontal Horizontal VARiable Trigger MODE Switch page 5 24 Trigger SOURCE Switch page 5 25 Trigger COUPLING Switch page 5 27 Scale Magnifier page 5 18 Switch page 5 19 2212 User Manual Horizontal Scale page 5 19 PROBE ADJUST Connector page 5 20 2 3 EXTernal Trigger Trigger Input SLOPE and Switch Z Axis Input page 5 22 page 5 26 4 5 ...

Страница 86: ...lel 1 0 Port Centronics Compatible page 5 45 5 58 IEEE STD 488PORT page 5 55 IEEJCSTl Rll232 C 488 PORT DR PORT RS 232 C DTE PORT page 5 53 EXTernal Clock Input page 5 52 0 Fuse Holder page 5 50 Power Cord Receptacle page 5 50 At a Glance ...

Страница 87: ...period of time results in stepping forwards to the next function in the selection range Holding down the push button for a longer period of time results in stepping backwards to the previous function in the selection range The In Detail section is split up in subsections for the function blocks on the front panel and the functions on the rear panel Also a description of the CRT Readout a Maintenan...

Страница 88: ...5 2 In Detail ...

Страница 89: ...tly from the crt Take voltage measurements by counting the vertical graticule divisions and partial divisions occupied by the portion of the display being measured and then multiplying by the VOLTS DIV setting Rise time amplitude and measurement points 0 10 90 and 100 are indicated at the left side of the graticule Take time measurements using the graticule markings in a similar manner Count the n...

Страница 90: ...ust the brightness of The trace intensity and the reference waveform intensity if the TOGGLE TR RO switch is toggled to the trace TR position The crt readout intensity the cursor display intensity and theintensity of messages if the TOGGLE TR RO switch is toggled to the readout RO position In the fully counter clockwise position of the INTENSITY control the crt readout and cursor display are disab...

Страница 91: ...e the control setting 0 FOCUS Control The FOCUS control adjusts the trace for optimum display definition Once set proper focusing is maintained over a wide range of display intensities 0 BEAM FIND Switch The BEAM FIND switch compresses the vertical and horizontal deflection to within the graticule area The traces are intensified to aid the user in locating traces that are overscanned or deflected ...

Страница 92: ...trace Step 2 Use the CH 1 POSITION control to move the baseline trace to the center horizontal graticule line Step 3 If the baseline trace is not parallel to the center horizontal graticule line the TRACE ROTATION potentiometer needs adjusting The Trace Rotation potentiometer is located inside the instrument and can be adjusted from the bottom side as indicated on the cabinet You should use a smal...

Страница 93: ... The 2212 Oscilloscope can be used in two different display modes Vertical Non Store Analog display mode In the Non Store analog display mode you can select CH 1 ADD ALT CHOP X Y and CH 2 In CH 1 or CH 2 mode only the signal applied to the CH 1 OR X input connector or to the CH 2 ORY input connector is dis played on the crt screen In ALT mode the display switches between CH 1 and CH 2 at the end o...

Страница 94: ...ors are acquired simultaneously However if the vertical mode is in ALT and the trigger source is in VERT MODE CH 1 and CH 2 will be digitized alternately In the X Y Store mode the acquisition and the sampling rate are set by the SEC DIV switch and or the EXT CLOCK 15 1IPOSITION v Q CH 1 VOLTS DIV CHlOR 25pF lMO 0 4 Vpk 0 16 VERTICAL I 1IPOSITION MODE V i11 CH2oR00 25pF lMO 8 4 Vpk 0 Figure 5 2 Ver...

Страница 95: ...l MODE Switch The Vertical MODE Switch selects the vertical mode for display in the Non Store and Store mode by toggling the MODE switch to the desired selection CH 1 In the CH 1 mode only the CH 1 input signal is selected for display ADD In the ADD mode the sum of the CH 1 and CH 2 input signals is diplayed on the screen An add symbol appears in the crt readout When CH 2 is inverted while in ADDm...

Страница 96: ...Y mode in the Non Store as well as in the Store mode When using the cursors iiVl becomes iiVX and iiV2 becomes iiVY In X Y Store mode the full acquisition length is equal to the SEC DIV switch setting times 10 24 SEC DIV X 10 24 In X Y Store mode with the SEC DIV switch in EXT CLK position the full acquisition length is equal to 4096 divided by the Clock Frequency of the EXT CLK input signal 4096 ...

Страница 97: ...ding VOLTS DIV readout AC GND DC Input Coupling Switches With the AC GND DC Input Coupling switches you select the coupling of the input signal from the CH 1 and CH 2 vertical input connectors to the vertical amplifiers AC In the AC position the input signal is capacitively coupled to the vertical deflection and signal acquisition systems The de component of the input signal is blocked Selection o...

Страница 98: ...Pushing the upper part of a VAR volts division control switch increases the vertical sensitivity up to the calibrated value of the VOLTS DIV switch Pushing both the VAR switches simultaneously will result in restoring the calibrated status The uncalibrated condition is indicated in the readout by a greater than symbol in front of the VOLTS DIV readout concerned Band Width Limit Switch With theBand...

Страница 99: ...or in the crt readout when a probe with probe coding as shown in Table 5 1 is attached to an input connector In X Y mode the signal connected to the CH 1 OR X input controls the horizontal deflection and the signal connected to the CH 2 ORY input controls the vertical deflection NOTE We recommend that you use Tektronix Probes because the identity pin will allow the 2212 to automatically display a ...

Страница 100: ...5 14 In Detail ...

Страница 101: ... not calibrated on the 4 2 and 1 ns div ranges You can use the Alternate Magnifier feature ALT MAGN to dis play the magnified and unmagnified sweep alternately on the crt screen in the Non Store mode You can reposition the unmagnified sweep vertically with the Trace Seperation control TR SEP in the ALT MAGN mode 2 Horizontal Store Display Mode In Store mode the 2212 provides a calibrated sweep spe...

Страница 102: ...0 SEC DIV 0 r 1t J CLK FAST S00mV P P N J kHz Figure 5 3 Horizontal Controls and Switches Horizontal POSIDON Control The Horizontal POSITION control positions the displayed waveform s horizontally over a one sweep length range ei ther X1 X10 or X50 magnified The coarse and fine con trol are combined in a one knob operation In Detail ...

Страница 103: ...mati cally When ALT MAGN is deselected the horizontal magni fication will automatically revert to the setting selected prior to switching to ALT MAGN mode If vertical mode is in CHOP pressing the ALT MAGN button will automatically change the vertical mode to ALT Pressing the ALT MAGN button again will restore the CHOP mode If ALT MAG is on X Y mode is not selectable ALT MAGN is not selectable in X...

Страница 104: ...ignal applied to the EXT CLK input In Store mode the SEC DIV switch setting determines the acquisition and display modes also sets the sampling rate and establishes the time scale factor of the displayed wave forms There are two storage modes with respect to the SEC DIV switch setting see also Table 5 2 RECORD mode In RECORD mode the acquired waveform updates a full record each time a trigger even...

Страница 105: ...gnify the distance be tween the cursors as they are attached to the waveform s The Xl XlO X50 sweep magnification switch also functions on reference waveform displays and provides for a horizontal expansion of 10 and 50 times Variable SEC DIV VAR control The Variable SEC DIV VAR control continuously varies the uncalibrated sweep time per division in the Non Store posi tion up to at least 2 5 times...

Страница 106: ... connector provides an auxiliary ground connec tion directly to the instrument chassis via a banana tip jack PROBE ADJUST Connector The PROBE ADJUST connector provides an approxi mately 0 5 V square wave voltage at approximately 1 kHz for use in compensating voltage probes and checking the vertical deflection system NOTE The PROBE ADJUST output is not intended as a reference in checking either the...

Страница 107: ...discusses the controls and connector which allow you to manipulate the triggering aspects of your signal TRIGGER HOLDOFF to it 135 EXT OR ID i Jt 134 S 400Vpk Figure 5 4 Trigger Controls and Connector 2212 User Manual 5 21 ...

Страница 108: ...ion The trigger SOURCE is CH 2 and CH 2 is DC coupled and in calibrated position The trigger SOURCE is VERT and one of the following conditions is met Vertical MODE switch is in CH 1 and CH 1 is in DC and in calibrated position Vertical MODE switch is in CH 2 or X Y and CH 2 is in DC and in calibrated position Vertical MODE switch is in ADD or ALT DC coupled and the CH 1 and CH 2 deflection factor...

Страница 109: ...y is stable RESET switch Pressing the RESET button will arm the trigger circuit for one of two actions A single sweep in Non Store SGL SWP A single acquisition record in Store SGL SWP The triggering requirements are the same as in NORM trigger mode After completion of a Non Store sweep or a Store acquisition record pressing the RESET button rearms the trigger cir cuitry to be ready for the next tr...

Страница 110: ...tition rate of about 20 Hz or faster In the ab sence of a proper trigger signal an autotrigger is gener ated and the sweep runs free In Store mode in the absence of a trigger signal an auto trigger is also gener ated The trigger point indicator intensified dot is visible on the generated trace at the position selected by the 25 75 pretrigger button For SEC DIV settings of 50 s per division to 0 1 ...

Страница 111: ... ing on a television field vertical sync signal In the ab sence of an adequate trigger signal the sweep or acquisi tion in Store mode free runs The 2212 otherwise be haves in TV FIELD mode as in the P P AUTO trigger mode When TV FIELD is selected TVFld is displayed in the crt trigger readout field Trigger SOURCE Switch The trigger SOURCE switch selects the signal SOURCE CH 1 VERT MODE CH 2 LINE EX...

Страница 112: ...T is selected EXT is displayed in the crt readout EXT 10 In the EXT 10 trigger SOURCE position an external signal applied to the EXT INPUT OR Z input connector is attenuated by a factor 10 before being ap plied to the Trigger circuit When EXT 10 is selected EXT is displayed in the crt readout EXT ZSwitch By pressing the EXT Z switch the signal applied to the EXT OR Z input connector is routed to t...

Страница 113: ...proving stability when the trigger signal is accompanied by low level noise AC In the AC position the trigger input signal is ca pacitively coupled to the trigger circuit and the de com ponent is blocked AC is displayed in the crt trigger readout field NOTE AC trigger coupling is useful for triggering on ac wave forms that have a large de offset HF REJ High Frequency Reject In the HF REJ coupling ...

Страница 114: ...veforms and eliminates low frequency interference or power supply hum from the trigger signal DC In the DC trigger coupling position all frequency components of the triggering signal are coupled to the trigger circuit DC to full bandwidth If the conditions mentioned for the Trigger LEVEL readout are not met DC is displayed in the crt trigger readout field NOTE DC trigger coupling is useful for mos...

Страница 115: ... Phase You can make Delta Volts t V Delta Time t T and One Over Delta Time 1 t T or frequency measurements of the displays using the CURSOR controls The crt readout ofthe 2212 reports the cursor type and the cursor delta t settings The t V t T or 1 t T crt readouts indicate respectively The Voltage difference t V between the cursors The Timing difference t T between the cursors The Reciprocal Time...

Страница 116: ...on the crt screen For fiV1 and fiVZ the cursors are horizontal lines and for fiT and 1 fiT the cursors are vertical lines Pressing this button again cancels the cursor measurement mode extin guishing the cursors and the cursor measurement display When the cursor measurement mode is inactive pressing the cursor ON button enables the cursor measurement mode to restore the previous cursors and the cu...

Страница 117: ...s the AV cursor s downwards TOGGLE CURSOR Switch With the TOGGLE CURSOR switch you can select the TRACK mode or the DELTA cursor mode When in TRACK mode both cursors are dashed lines Rotating the cursor POSITION control causes both cursors to move equal amounts until the limit of either one is reached When in DELTA cursor mode the delta cursor dashed line is movable using the cursor POSITION contr...

Страница 118: ...ode switch in the V2 mode two horizontal cur sors are displayed on the screen The vertical mode switch is set to the CH 2 position VZ is represented in the crt readout display by the distance between the two cursors and expressed in an equiva lent voltage The VOLTS DIV scaling for this measurement mode is defined by The setting of the CH 2 VOLTS DIV switch The probe encoding 1X 10X 100X LlV Cursor...

Страница 119: ...osition or the VOLTS DIV settings are not the same The delta volts RATIO function is applicable to the AVl as well as to the AV2 and to the AV function VX Cursor Function When the 2212 is switched to X Y mode you can select the AVX and AVY cursors with the AV1 AV2 AT 1 AT cursor mode switch The AVl cursors become the AVX cursors vertical lines on the crt The AVX cursors represent a crt readout dis...

Страница 120: ...ATIO 11VX 11VY Function With the 2212 in X Y mode the AVX and AVY measurements will be displayed as a RATIO if one of the VOLTS DIV switches or both switches are in the UNCAL position With a signal of five screen divisions corresponding to a ratio of 100 CURSOR Funktion AV1 AV2 AVX AVY AV Table 5 3 Voltage Cursor Function Readouts Cursor Readout with VOLTS DIV Calibrated AV1 V AV2 V AVX V AVY V AV...

Страница 121: ... DIV is in UNCAL L1T Function With the cursor mode switch in the T position the time difference between the two vertical cursors is determined by The distance between the two vertical cursors The SEC DIV scaling as defined by the SEC DIV switch The setting of the Xl XlO X50 horizontal magnify switch RATIO L1T Function With the SEC DIV switch in the UNCAL position in Non Store mode Mis expressed as...

Страница 122: ... quency is determined by The distance between the two vertical cursors The SEC DIV scaling as defined by the SEC DIV switch The setting of the Xl Xl0 X50 magnify switch PHASE 1 L1T Function With the SEC DIV switch in the UNCAL position in the Non Store mode the 1 Llt cursor difference is expressed as PHASE in de grees with five horizontal screen divisions corresponding to a phase of 360 degrees se...

Страница 123: ...tches to activate the storage control functions are located in the STORAGE section on the front panel See Figure 5 6 for locations of items 40 through 45 Cp STORAG SAVE RECALL HOLD PRETRIG ON ON Q ON 9 5 OFF OFF i PRNSCR Figure 5 6 Storage Controls 2212 User Manual 5 37 ...

Страница 124: ...e 5 2 the trigger position is shown in the display by an intensified dot HOLD ON OFF Switch In Store mode you can stop the display from being up dated by pressing the HOLD ON OFF switch If the Store display mode is ROLL see Table 5 2 the cur rent acquisition is stopped immediately upon pressing the button Pressing the button again causes the acquisition to continue where it was stopped If the Stor...

Страница 125: ...splayed waveform acquisition is writ ten into the reference memory and any existing reference memory is overwritten by the displayed waveform acquisi tion The stored waveform remains displayed on the crt The reference waveform is retained when the instrument is switched between Store and Non Store mode Only traces positioned entirely inside the screen area will be saved correctly when placed in th...

Страница 126: ...the plot The hardcopy output represents the unmagnified Xl horizontal magnifi cation screen and the plotted SEC DIV scaling re flects the unmagnified horizontal deflection factor Holding the RECALL and HOLD switches simultaneously pushed in for more than three seconds will result in aborting the print plot process when a plot is in progress The trigger point on a plot or printout is indicated by a...

Страница 127: ...al triggering and display controls to produce a usable waveform on the crt screen by pressing the AUTO button Save a current front panel Set up Recall the last saved front panel Set up Display the MENU The MENU functions include the settings for the communica tion interface Parallel Printer Interface When your instrument has Option 12 RS 232 C Interface or Option 10 GPIB Interface included you can...

Страница 128: ...nt is switched off See APPENDIX A for the default control settings of each front panel control at power up See Figure 5 7 for locations of items 46 through 49 49 SETUP SAVE RECALL QMENU9 Figure 5 7 SETUP controls AUTO Setup Switch The AUTO Setup switch selects the AUTO SETUP function When you press the AUTO button the vertical horizontal triggering and display controls to display an unknown wavefo...

Страница 129: ...n will result in leaving the MENU and return to signal display indicated as exit menu on the menu Names of menu lines are in lower case and parameters on the menu lines are in upper case Menu lines outside the dotted lines are the fixed part of the menu and inside the dotted lines are the variable part Types If you have a standard instrument only the Parallel Printer I O Port HARDCOPY menu see Fig...

Страница 130: ...sap pears and the new setting will be indicated by a opening bracket in front and a closing bracket behind the new setting When you leave the menu the new parameter setting will be stored in the non volatile memory The TOGGLE CURSOR switch is used for selecting a menu line indicated by J cursor toggle on the bottom menu line The selected menu line is indicated by a pointer in front of the menu lin...

Страница 131: ...B RS232 port CEm RONICS GPIB RS232 driver HPGL EPS FX EPS_LQ T size SMALL OORMAL FULL_REx grat OFF CROSS DIVS FULL user text OFF OH Tektronix 2212 cursor position U cursor select exit menu a Z trigger level Figure 5 8 HARDCOPY Menu Settings HAROCOPY Menu To make a hardcopy of the record the HARDCOPY menu must be set Therefore press Save Recall in the Setup function block In the HARDCOPY menu you c...

Страница 132: ...HPGL is selected the size line is changed to nr ofpens 1 1 The HP GL Hewlett Packard Graphics Language driver uses a small subset of the HP GL command set The commands used are shown as follows Scale SC scale x scale y Select Pen SP pen number Pen Up PU Pen Down PD Set Defaults DF Move Absolute PA absolute x y location Set Character Size SR character width character height Plot Text String LB text...

Страница 133: ...our pens The fixed pen allocations are as follows Graticule Acquisition channel 1 data Acquisition channel 2 data Reference channel 1 data Reference channel 2 data Graticule Pen 1 Pen 2 Pen 3 Pen4 Pen 1 The following graticule settings can be selected in the menu OFF no graticule will be printed CROSS a cross with graticule minor division and division classification will be printed 2212 User Manua...

Страница 134: ...information will be printed and the user text is removed from the menu display ON text can be composed in the menu on the textstring line and printed on the hardcopy Textstring On the menu line next to the user text line you see the format of the textstring to be printed plotted on the crt screen Characters are selected with the Trigger LEVEL control and the position is set by the CURSOR POSITION ...

Страница 135: ...NG CONDUCTOR MUST BE CONNECTED TO GROUND FOR CONTINUED FIRE PROTECTION REPLACE FUSE ONLY WITH 250V FUSE OF THE SPECIFIED TYPE AND RATING NO OPERATOR SERVICEABLE COMPONENTS INSIDE DO NOT REMOVE COVERS REFER SERVICING TO QUALIFIED PERSONNEL DISCONNECT G CORD BF FORE REPLACING FUSE VOLTAGE 95 128 V U0 250 V 48 U0Hz 0 ATTACH POWER CORD CLAMP Figure 5 9 Rear Panel Partial NOTE If you want to change the...

Страница 136: ...ms you about fuse rating 0 5 A Slow for 190 250VAC 1 0 A Slow for 95 128 VAC and line voltage range 95 128 VAC or 190 250 VAC Power Cord Receptacle The Detachable Power Cord Receptacle provides the con nection point for the ac power source to the instrument For replacement of a power cord see the Accessories Ap pendix A for a Tektronix Part Number In Detail ...

Страница 137: ...tions Interface Optional The GPIB IEEE STD 488 2 1987 Communications Interface Optional The Parallel Printer Interface Centronics compatible The standard 2212 without Options 10 and 12 is equipped with a parallel printer interface to be connected to printers plotters which have a Centronics compatible interface See Figure 5 9 Page 5 49 for locations of items 52 through 55 2212 User Manual 5 51 ...

Страница 138: ...f the 2212 If you want to use the 2212 with an external clock signal in Store mode set the SEC DIV switch to one of the two EXT CLK positions as indicated in the crt readout EXT CLK RECORD position for the RECORD mode EXT CLK ROLL position for the ROLL mode Samples are clocked on the falling edges The maximum input frequency is 10 MHz in RECORD mode and 4 kHz in ROLL mode In Detail ...

Страница 139: ...e Figure 5 8a With Option 12 installed the instrument is fully remote programmable Connections for signal ground and shield ground are also provided for grounding between the instrument and an external device Table 5 5 lists the function of each pin ofthe RS 232 C DTE port male Table 5 5 RS 232 C DTE Connector Pin Signal Name Function CHAS Chassis ground GND TXD Transmitted data RXD Received data ...

Страница 140: ...anmable OFF baud 19K2 il 6_ 4800 1200 300 handshake XON XOFF HARIMARE parity Qm l EVEN NONE stopbits l 2 cursor position U cursor toggle exit menu Figure 5 Ba RS 232 C Menu Settings The following parameters between the dotted lines Lines 3 7 can be selected separately see Figure 5 Ba Line 3 Line 4 Line 5 Line 6 Line 7 Select the programmability of the interface Set the Baudrate Select the type of ...

Страница 141: ...complies to Tektronix Standard Codes and Formats 4 91 The function of each pin of the connector is shown in Table 5 6 on page 5 56 GPIBMenu A GPIB menu is added to a 2212 with the GPIB interface option Option10 Line 1 and Line 2 at the top and Line 9 and Line 10 at the bottom are the same as for the Hardcopy menu see page 5 45 The following parameters between the dotted lines can be selected seper...

Страница 142: ...DAC IEEE 488 Handshake 9 IFC IEEE 488 Input 10 SRO IEEE 488 Output 11 ATN IEEE 488 Input 12 SHIELD System Ground Chassis 13 DI05 IEEE 488 Data 1 0 14 DI06 IEEE 488 Data 1 0 15 Dl07 IEEE 488 Data 1 0 16 DI08 IEEE 488 Data 1 0 17 REN IEEE 488 Input 18 GND Digital Ground DAV 19 GND Digital Ground NRDF 20 GND Digital Ground NDAC 21 GND Digital Ground IFC 22 GND Digital Ground SRO 23 GND Digital Ground...

Страница 143: ..._______________ Line 2 Il lll HARIXXPY RS232 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 2212 User Manual progLameble primuyaajzess waLirlng 501 CN cursor position U cursor toggle exit menu Figure 5 Bb GPIB Menu Settings Rev 5 93 5 57 ...

Страница 144: ...t a 25 pin PC to Centronics cable Tektronix Part Number 012 1214 00 to the 25 pin D type female connector of the 2212 Select settings of the Parallel Printer Interface in the MENU display See also page 5 43 and 5 44 Press the RECALL and the SAVE button simultaneously to initiates the interface and start a data dump of crt screen data to the printer plotter connected to the 2212 oscilloscope See al...

Страница 145: ...ls Number Signal Name 1 Strobe 2 Data Bit O 3 Data Bit 1 4 Data Bit 2 5 Data Bit 3 6 Data Bit 4 7 Data Bit 5 8 Data Bit 6 9 Data Bit 7 10 Acknowledge 11 Busy 12 P End out of paper 13 Select 14 Auto Feed 15 Error 16 Initialize Printer 17 Select Input 18 25 Ground 2212 User Manual 5 59 ...

Страница 146: ...5 60 In Detail ...

Страница 147: ...other row within the bottom graticule division Messages and warnings may also be displayed on the crt On the row in the top graticule division you will find the following readouts Cursor Type Cursor Delta Value Trigger Trigger Value Trigger Source On the row in the bottom graticule division you will see CH 1 Vertical Deflection ADD Sign CH 2 Vertical Deflection Horizontal Deflection Acquisition Mo...

Страница 148: ...displayed are illustrated in Figure 5 10 CH1 BWLIMIT CURSOR TYPE CH1 COUPLING TRIGGER CH2 TRIGGER VALUE COUPLING CH2 CH2 BWLIMIT VOLTS DIV ANO INVERT TRIGGER SOURCE Figure 5 10 CRT Readout Display Fields DELTA CURSOR REFERENCE CURSOR REM AODR X YMOOE STORE ONLY In Detail ...

Страница 149: ...l lines on the crt The AVl AV2 AVY AV and associated Ratio Cursors are displayed as horizontal lines on the crt as shown in Figure 5 10 Cursor Delta Value The Cursor Delta Value indicates the distance between the two cur sors The units in which the value is expressed will depend upon the cursor type Possible units are percent 0 degrees V Volts s seconds Hz Herz Possible prefixes are n nano µ micro...

Страница 150: ...e the display and therefore Trig is not displayed Trigger Value The Trigger Value readout field indicates the value of the Trigger Level and the Trigger Coupling type This field is disabled in X Y mode Trigger Source The Trigger Source readout field indicates the current trigger source Possible readouts are CH1 CH2 VERT EXT LINE In Detail ...

Страница 151: ...L appears if the CH 1 bandwidth is limited ADD If the instrument is set in the ADD Mode a sign appears in this readout field CH 2 Vertical Deflection The CH 2 Vertical Deflection readout field indicates the current CH 2 VOLTS DIV deflection setting Possible readouts are 2 5 10 20 and 50 mV 0 1 0 2 0 5 1 2 and 5V A sign appears in front of the value if the UNCALLED lights A sign appears after the v...

Страница 152: ...2 and 4 ns div positions to indicate the settings are approximate Acquisition Mode The Acquisition Mode readout field indicates whether the instru ment is in HOLD or ROLL store mode This field is only active in the STORE mode ADDR The ADDR readout field is used only by instruments with an op tional interface option Option 10 and or 12 indicating that the instrument is ADDRessed to Talk or Listen R...

Страница 153: ...tion The 2212 standard instrument comes with two xlO probes Tektronix type P6109 which are useful for a wide variety of tasks For different measurement situations you need different probes Additional probes are optional as listed in Accesssories Appendix A You may also use Table 5 8 to select a probe for your application NOTE For more information on Tektronix Probes etc see the Tektronix Product C...

Страница 154: ...pplications Maximum sensitivity using lX high impedance passive probes Between 15 and 500V Qualitative or go no go measurements High Voltage Probes High voltage probes have attenuation factors in the l00X to lO00X range The considerations which apply to other passive probes apply equally well to the high voltage probes with a few excep tions The voltage range on high voltage probes varies from lkV...

Страница 155: ...upply or from the scope itself Active probes offer low input capacitance 2 pF typically while maintaining the higher input resistance of passive probes 10 MQ typically Active probes are useful for making accurate timing and phase measurements without degradation of amplitude accuracy Active probes have a dynamic range of typically 10 to 15 V Some active probes are also referred to as FET probes Th...

Страница 156: ...MHz Use a current probe by clipping its jaws around the wire carrying the current that you want to measure Because current probes are non invasive with loading typically in the mQ to low Q range they are especially useful where low loading of the circuit is im portant Current probes can also make differential measurements by measuring the results of two opposing currents in the jaws of the probe T...

Страница 157: ...requencies Differential probe tip signal processing minimzes the measurement errors caused by differences in probes cable lengths and input attenuators The common mode rejection ratio is a measure of how effectively the probe cancels signals which are common to both inputs while the common mode range indicates the maximum amplitude the common signal can reach before the probe circuitry is saturate...

Страница 158: ...100 MHz Switchable Probe P6009 1OOX High Voltage Passive Probe 1 5 kV max 10 Mn 2 5 pF DC to 120 MHz P6015 1000X High Voltage Passive Probe 20 kV max 100 Mn 3 0 pF DC to 75 MHz P6046 1X 1 OX Differential Probe De to 100 MHz P6008 Environmentalized 10X Probe 10 Mn 7 5 pF DC to 100 MHz 50 to 150 C P6202A Active FET 1OX Probe 10 Mn 2 0 pF DC to 500 MHz 1101A Accessory Power Supply for P6202A P6408 Wo...

Страница 159: ...ad inductance introduced by the probe Misadjustment of the probe compensation Ground Lead Inductance The probe s ground lead provides the best grounding method for signal interconnection and ensures the maximum amount of signal shielding in the probe cable You can make reliable signal measure ments when the 2212 and the Unit Under Test are connected by a common reference ground lead in addition to...

Страница 160: ...Probes Misadjustment of the probe compensation is a common source of measurement error Probes should be compensated whenever the probe is moved from one oscilloscope to another or between channels on the same oscilloscope In Detail ...

Страница 161: ... customer service number between 8 00 AM and 4 30 PM Pacific Time 1 800 93 7 6007 Outside the U S call your local Tektronix Sales Office or Service Center They are fully equipped to service your instrument To help diagnose the problem have the instrument serial number and firmware version number available The serial number is lo cated at the top right of the rear panel The firware identification n...

Страница 162: ... tag to the instru ment showing The owner of the instrument and address The name and phone number of a person to be contacted if additional information is needed Instrument type and serial number The reason for returning the instrument A complete description of the service required Step 3 Wrap the instrument with polyethylene sheeting or equivalent material to protect the outside finish of the ins...

Страница 163: ...a complete list with Tektronix part numbers of standard accessories included with each 2212 and a list of optional accessories You can obtain additional information about instrument options option availability and other accessories by consulting the current Tektronix Product Catalog or by contacting your local Tektronix Field Office or representative 2212 User Manual A 1 ...

Страница 164: ...rnational Power Cords Instruments are shipped with a detachable power cord configura tion ordered by the customer Table A 2 identifies the Tektronix part numbers for the available power cords and fuses Warranty Plus Service Options The following options add to the services available with the stand ard warranty Option M2 When Option M2 is ordered Tektronix provides five years of warranty remedial s...

Страница 165: ...61 0104 08 Fuse 0 5 A 250 V Slow 159 0032 00 Option A5 Switzerland 220 V 50 Hz 2 5 m 161 0167 00 Fuse 0 5 A 250 V Slow 159 0032 00 Option 3R Rackmounted Instrument When ordered with Option 3R the oscilloscope is shipped in a configuration that permits easy installation into a 19 inch wide electronic equipment rack All hardware is supplied for mounting the instrument into the rack Complete rack mou...

Страница 166: ...y to hook up a printer plotter personal computer or modem that may be encountered Operating information for the Option 12 RS 232 C interface is given in the 2212 Programmer Manual delivered with Option 12 The RS 232 C interconnection plug is described in Section 3 In terfaces The RS 232 C parameters can be set in the MENU see Section 5 Interfaces Option 02 Option 05 Option 1K Option 1M Option 1T O...

Страница 167: ...32 C Cable Gender Changer for use with 012 1423 00 Service Manual Programmer Manual Viewing Hoods Collapsible Polarized Binocular Fuses Fuse 1 0 A 250 V 3AG Slow Fuse 0 5 A 250 V 3AG Slow Voltage Probes Tek Part Number 200 3397 00 016 0677 02 020 1514 00 016 0792 01 337 2775 01 K212 012 1214 00 012 0991 01 012 0991 00 012 1423 00 131 4923 00 070 8439 00 070 8440 01 016 0592 00 016 0180 00 016 0566...

Страница 168: ...h Current Probe 20 A High Current Probe 100 A Current Probe Amplifier for A6202 A6203 A TM500 TM5000 Power Module for AM503 Oscilloscope Cameras Low Cost Camera with portables hood Low Cost Camera with Flash Unit Low Cost Camera with Autofilm Motorized Back High Performance Camera Printers Plotters Printer Plotter P6101B P6109 Opt 01 P6109B P6008 P6129B P6009 P6015 A6901 A6902B P6021 P6022 134 A63...

Страница 169: ...to function vertical horizontal trigger cursor setup and storage The controls just to the right of the crt screen are called the display group Within each group the functions are set directly by their own front panel knob When Option 10 GPIB and or Option 12 RS 232 C are included most functions of the oscilloscope can be operated externally by a controller PC Indicators Several on screen readouts ...

Страница 170: ...ing You can select the following display modes CH 1 ADD ALT CHOP X Y or CH 2 In CH 1 or CH 2 mode only the signal applied to the CH 1 OR X input connector or to the CH 2 ORY input connec tor is displayed on the crt screen In ALTernate mode the display switches between CH 1 and CH 2 at the end of each sweep showing the signals applied to each channel alternately In CHOPped mode the display switches...

Страница 171: ...ode is selected in Store mode the sig nals applied to the vertical input connectors are acquired similtaneously However if the vertical mode is in ALT and the trigger source is in VERT MODE CH 1 and CH 2 will be digitized alternately 2212 User Manual B 3 ...

Страница 172: ...ut affecting the bandwidth of the other channel With the VARiable VOLTS DIV gain control VAR you can in crease the deflection factor to overlap the next VOLTS DIV setting You can select the following display modes CH 1 ADD ALT CHOP X Y and CH 2 In CH 1 or CH 2 mode only the signal applied to the CH 1 OR X input connector or to the CH 2 ORY input connec tor is displayed on the crt screen In ALTerna...

Страница 173: ...librated time per division as selected with the SEC DIV switch You can use the Alternate Magnifier feature ALT MAGN to dis play the magnified and unmagnified sweep alternately on the crt screen in Non Store mode You can reposition the unmagnified sweep vertically with the Trace Separation control TR SEP in the ALT MAGN mode Horizontal Storage Display System In Store mode the 2212 provides a calibr...

Страница 174: ...ired before the acquired data is dis played on the crt screen All triggering modes are selectable ROLL mode The SEC DIV must be set to 0 1 SEC DIV or slower Every new acquired data point is displayed immedi ately to the right side of the crt screen and the complete dis play is shifted one position to the left Triggering is disabled except in SGL SWEEP single sweep mode ROLL is dis played in the cr...

Страница 175: ...he trigger HOLD OFF con trol The EXT OR Z input at the bottom of the TRIGGER section can be used to apply either an external trigger signal to the trigger circuit or an external Z axis display intensity control signal to the Z axis circuit Setup The setup function allows you to automatically setup the instru ment with the push of a single button AUTO The SET UP feature is intended to automatically...

Страница 176: ...ppear as vertical dotted lines with delta time and fre quency measurements The cursor controls allow you to make delta voltage LlV delta time LlT and frequency 1 LlT measurements using the cursors on the display You can select two cursor modes TRACK mode Both cursors are dashed Rotating the cursor POSITION causes both cursors to move DELTA mode The delta cusor is dashed and the reference cursor is...

Страница 177: ... plotter providing hardcopies without requiring you to put the oscilloscope in a system controller environment The hardcopies obtained are based on what is displayed at the time PRNSCR is invoked A menu to setup the communication interface can be selected by pressing SAVE and RECALL simultaneously The parameters for the menu can be selected with the TOGGLE CURSOR switch and the cursor POSITION con...

Страница 178: ...adouts asso ciated with them and menu items The 2212 displays crt readouts along the top row and the bottom row of the screen The INTENSITY control is used to adjust brightness of the trace or the readout intensity The FOCUS control is used to adjust for a well defined display Pushing the BEAMFIND switch helps you find off screen signals quickly NOTE The display controls affect the display only Ap...

Страница 179: ...nput Voltage Probe Tip to Common Range Sensitivity CH 1 and CH 2 Analog Banbdwidth 3 dB Useful Storage Performance1 Description Two full featured CH 1 and CH 2 Two both identical 8 bits 25 levels per division 10 24 divisions of dynamic range DC AC or GND 400 V DC peak AC or 800 V AC p p at 10 kHz or less derate with increased frequency according to Figure B 1 2 mV to 5 V in a 1 2 5 settings sequen...

Страница 180: ...data points 400 points per division across the graticule area 400 Samples per second SEC DIV setting Table B 3 Nominal Traits Triggering System Name Trigger Source Trigger Mode Trigger Coupling External Trigger Maximum Input Voltage B 12 Description CH 1 CH 2 Vert Mode Line External and External 10 P P Auto Normal Single Sweep TV Line and TV field Noise Rejection Low Frequency Rejection High Frequ...

Страница 181: ...put Ports and Power Fuse Name Interface Parallel Interface Serial RS 232 C Optional Interface GPIB Optional Fuse Rating 2212 User Manual Description IBM PC compatible Parallel Printer Plotter Interface for Centronics compatible printers plotters Conforms to EIA Standard RS 232 C GPIB Interface complies with IEEE 488 21987 Either of two fuses may be used 0 5 A250 V slow blow for 190 250 VAC or 1 0 ...

Страница 182: ... Overall Dimensions B 14 Description Forced air ciculation with no air filter Aluminum chassis Plastic laminate front and rear panel Tek blue structure paint on aluminum cabinet 9 5 kg 12 kg Height 138 mm Width 380 mm with carrying handle Width 327 mm without carrying handle Depth 445 mm Depth 515 mm with handle extended Appendix B Specifications ...

Страница 183: ...aracteristic is valid only if the instrument is in Store mode With comment Non Store means the characteristic is valid only if the instrument is in Non Store mode No comment means the characteristic is valid with the instru ment in Store mode as well as in Non Store mode Environmental characteristics are given in Table 6 15 This instru ment meets the requirements of MIL T 28800D for Type lll Class...

Страница 184: ...ble Setting VARiable Control Off VARiable control set Trace Shift 1 0 division or less to minimum sensitivity 1 division or less CH 2 Switched to CH 2 INVert 1 5 division or less 100 1 at 10 MHz for any two channels having equal Volts Division and Coupling settings VOLTS DIV Setting Bandwidth 5 mV DIV to 5 V DIV DC to at least 60 MHz 5 Cto 35 Cambient DC to at least 48 MHz 0 Cto 40 Cambient 2 mV D...

Страница 185: ...X50 Magn 0 Cto 40 C 8 C Magnifier Setting Measurement Accuracy 15 c to 35 C X1 5 X10 8 X50 9 1 0 Divisions 400 Dots per Division Graticule indication of time cursor difference is within 2 of readout value DC peak AC 25 V or 25 V p p AC at 100 kHz or less See Figure B 1 1 Mn 10 parallel 25 pF 2 5 pF Sweep accuracy and Sweep Linearity applies over the center eight divisions Exclude the first 50 ns o...

Страница 186: ...asing to 150 mV p p at 60 MHz Sensitivity with Coupling NOISE REJ Source Sensitivity Internal 1 4 division from DC to 5 MHz increasing to 2 2 divi sion at 60 MHz External b 160 mV p p from DC to 5 MHz increasing to 600 mV p p at 60 MHz Trigger sensitivity is defined as the minimum peak to peak sine wave signal amplitude required to show the test signal with horizontal jitter of less than 3 of one ...

Страница 187: ...nput Voltage Input Impedance Sensitivity 0 35 division from DC to 20 kHz 40 mV p p from DC to 20 kHz Sensitivity 1 0 division 1 0 division of Composite Sync Limit 400 V DC peak AC or 800 V AC p p at 10 kHz or less See Figure B 2 1 Mn 10 parallel to 20 pF 2 5 pF Trigger sensitivity is defined as the minimum peak to peak sine wave signal amplitude required to show the test signal with horizontal jit...

Страница 188: ...INT EXT DC EXT 10 DC Measurement NOISE REJection AC Coupled Lower 3 dB point LF REJ Range May be set to any volt age level of the wave form that can be displayed At least 1 2 V 2 4 V p p At least 12 V 24 V p p Accuracy DC to Full Bandwidth 10 Hz or less Internal Source 20 Hz or less External Source Lower 3 dB point 30 kHz 25 HF REJ Upper 3 dB Point 30 kHz 25 DC Coupled DC to Full Bandwidth Appendi...

Страница 189: ...z Figure B 1 Maximum Input Voltage Versus Frequency Derating Curve for the EXT CLK Connector Volts DC peak AC 300 200 l ov 100 50 20 12 10 10 kHz 50 kHz 100 kHz 500 kHz 1 MHz 50MHz Figure B 2 Maximum Voltage Versus Frequency Derating Curve for the CHl OR X CH 2 ORY and EXT OR ZConnectors 2212 User Manual B 21 ...

Страница 190: ...tial Accuracy Description Switching from Non Store to Store the trace shift must be within 0 5 division at graticule center with VOLTS DIV switch settings from 2 mV DIV to 5 V DIV Graticule indication of time cursor difference is within 2 of readout value Measured over center eight divisions B 22 Appendix B Specifications ...

Страница 191: ...e Mode Magnifier Setting Accuracy 15 Cto35 C X1 4 of reading 2 of one horizontal division X10 Magn 5 of reading 2 of one horizontal division X50 Magn 6 of reading 2 of one horizontal division Time Difference Readout Accuracy Non Store Mode Magnifier Setting Accuracy 0 Cto40 C X1 5 of reading 2 of one horizontal division X10 Magn 6 of reading 2 of one horizontal division X50 Magn 9 of reading 2 of ...

Страница 192: ...fference Accuracy Display Non Store Store X1 Store X10 Magn Store X50 Magn Resolution 100 steps per division 400 steps per division 40 steps per division 8 steps per division With less than 8 division vertical input signal and Trigger Mode NORM Source CH 1 or CH 2 Coupling DC Vert Channels DC Measured over the center six divisions Measured over the center eight divisions B 24 Appendix B Specificat...

Страница 193: ...idth Measurement Bandwidth X Axis b 3 dB DC to at least 2MHz X Y Accuracy Store X Axis and Y Axis Phase Difference between X Axis and Y Axis Amplifiers Non Store Bandwidth Y Axis b 3 dB Same as vertical deflection system Same accuracy as digital storage vertical deflection system Maximum 3 deg from de to 150 kHz Measured with a de coupled five division reference signal h Measured with a five divis...

Страница 194: ...Line Voltage Ranges Line Frequency Range Max Power Consumption Line Fuse Description 95 VAC to 128 VAC or 190 250 VAC depending on Line Voltage Setting a 48 Hz to 440 Hz 85 Watts 95 VA Line Voltage Range Fuse 95 128 VAC Range 1 A slow blow 230 V 190 250 VAC Range 0 5 A slow blow 230 V To change the Line Voltage Range inside the instrument a qualified techni cian must be consulted to change the fus...

Страница 195: ...eg F Non operating a 55 C to 75 C 67 to 167 deg F Measurement Type Range Operating To 4 570 metres 15 000 feet b Non operating To 15 240 metres 50 000 feet b Measurement Type Range Operating and non operating c 95 5 to 0 relative humidity Operating 30 C to 40 C for all modes of operation Non operating 30 C to 60 C Meets radiated and conducted emission require ments per VOE 0871 Class B Plus FCC se...

Страница 196: ...ting during step 7 Maximum operating temperature decreases 1 C per 1000 feet above 5 000 feet 5 cycles 120 hours referenced toMIL T 28800D para 4 5 5 1 2 2 for type III Class 5 instruments To meet EMI regulations and specifications use the specified shielded cable and metal connector housing with the housing grounded to the cable shield on the Parallel Printer Plotter connector Test performed with...

Страница 197: ... are not warranted This subsection contains only typical characteristics In the Name column a distinction is made between operational modes With comment Store means the characteristic is valid only if the instrument is in Storage mode With comment Non Store means the characteristic is valid only if the instrument is in Non Storage mode No comment means the characteristic is valid with the instru m...

Страница 198: ...R Non Store 10 1 at 20 MHz Common Mode Rejection Ratio CMRR Store VOLTS DIV Setting Ratio 5 mV DIV to 5V DIV 10 1 at 10 MHz 2 mV DIV 10 1at1MHz Step Response Non Store b VOLTS DIV Setting Rise Time 5 mV DIV to 5 V DIV 5 8 ns or less 5 C to 35 C 5 mV DIV to 5 V DIV 7 0 ns or less 0 c to 40 C Aberrations Non Store VOLTS DIV Setting Abberations c 5 mV DIV 6 or less 10 mV DIV to 0 2 V DIV 4 or less 0 ...

Страница 199: ... DIV __EXI 2 Hz 8 bit 1 part in 256 1 Bandwidth DCto10MHz 10 Checked at 5 mV DIV for common mode signals of six divisions or less with the VAR and POSITION control adjusted for the best CMRR at 50 kHz Risetime is calculated from this formula Rise Time Bandw i J dB s Measured with a five division reference signal centred vertically from a 50 Q source driving a 50 Q coaxial cable terminated in 50 Q ...

Страница 200: ...EXT CLK Logic Thresholds B 32 Rev 12 92 Description 0 to 4 divisions At least 2 5 1 Start of the trace can be positioned beyond the right of the center vertical graticule line and the start of the 10 th division beyond the left of the center vertical graticule line Greater than 10 divisions Mode RECORD ROLL Frequency DC to 10 MHz DC to 4 kHz Equal to the input frequency Mode Low min High min RECOR...

Страница 201: ... is prior to the trigger event Table B 19 Typical Characteristics Z Axis System Name Sensitivity Usable Frequency Range EXT Input OR Z Input Description 5 V causes noticeable modulation DCto5MHz Measurement Type Limit Maximum Input Voltage Input Impedance 400 V DC peak AC or 800 VAC p p at 10 kHz or less See Figure 6 1 1 Mn 10 parallel to 20 pf 2 5 pf Positive going input decreases the intensity 2...

Страница 202: ...B 34 Appendix B Specifications ...

Страница 203: ... subsection Warranted Characteristics The performance checks may also be used as an acceptance test or as a preliminary trouble shooting aid to help determine the need for repair or readjustment Conventions Throughout the test procedures the following conventions apply Each test procedure uses the following general format Title of Test Equipment Required Initial Control Settings Procedure Steps Wh...

Страница 204: ... C 1 is a complete list of the equipment required to accomplish the Performance Checks in this section Test equipment specifications described are the minimum necessary to provide accurate results Detailed operating instructions of the test equipment is not given in this procedure If more operating information is required refer to the appropriate test equipment instruction manual When you use equi...

Страница 205: ...ss Flatness 0 5 2 Leveled Frequency 250 kHz to Vertical Tektronix Sine Wave above 60 MHz horizontal and SG503 Leveled amplitude Output variable from triggering Sine Wave Generator 10 mV to 5V p p Out checks and Generator put impedance 50 n adjustments Reference frequency Display adjust 50 kHz Amplitude ments and accuracy constant with Z Axis check in 3 of reference frequency as output frequency ch...

Страница 206: ...s tor a 6 TV Signal Provide Composite Check TV Tektronix Generator TV Video and Line Trigger circuit TSG 100 Sync Signals Test Signal Generator 7 Coaxial Impedance 50 n Signal inter Tektronix Part Cable 2x Length 42 in connection Number Connectors BNC 012 0057 01 8 Dual Input Connectors BNC Signal inter Tektronix Part Coupler Female to dual connection Number BNC male 067 0525 02 9 Precision Impeda...

Страница 207: ...n Connectors BNC Connectors BNC Use Signal Termination Vertical com pensation and triggering checks Signal inter connection Signal inter connection Example of Test Equipment Tektronix Part Number 011 0092 00 Tektronix Part Number 011 0059 02 Tektronix Part Number 175 1178 00 Tektronix Part Number 012 1214 00 16 Centronics Com patible Printer Plotter Parallel Interface Check Requires a TM 500 Serie...

Страница 208: ... the display An Equipment Required block at the beginning of each subsection lists only the test equipment necessary to do the checks in that sub section Also at the beginning of each subsection is a list of all the front panel control settings required to prepare the instrument for per forming the first step of the subsection Do each of the steps within a particular subsection completely to ensur...

Страница 209: ... C 18 Triggering Checks 1 Check 500 Hz Trigger Sensitivity C 20 2 Check 500 kHz Trigger Sensitivity C 21 3 Check 5 MHz Trigger Sensitivity C 21 4 Check 50 MHz Trigger Sensitivity C 22 5 Check External Trigger Ranges C 22 6 Check TV Field Trigger Sensitivity C 23 7 Check Trigger Readout Accuracy C 24 8 Check Line Trigger Function C 25 Probe Adjust Check 1 Check Probe Adjust Operation C 27 X Y Displ...

Страница 210: ...ertical dis play system that are listed under Warranted Characteristics in Appendix B Specifications You should set up the test equipment as shown at the start of the procedure list Changes to the test set up will be indicated in the procedures if necessary Appendix C Performance Verification ...

Страница 211: ...em 13 ENC Male to Tip Plug Item 14 Initial Control Settings Vertical CH 1 and CH 2 POSITION Midrange CH1 and CH2 MODE CH 1 VOLTS DIV 2 mV CHl and CH2 VARiable Off CHl and CH2 AC GND DC DC CHl and CH2 Horizontal POSITION Midrange MODE ALT MAGN Off SEC DIV 0 5 ms VARiable Off X1 XlO X50 Magnifier Xl Trigger HOLDOFF MIN LEVEL Midrange SLOPE Positive Going MODE P P AUTO SOURCE VERTical MODE COUPLING D...

Страница 212: ... a Set CH 1 VOLTS DIV switch to 2 mV division b Rotate the VOLTS DIV switch through the range c CHECK The trace shift should be 1 0 division d Set the VAR to the minumum sensitivity and rotate the VOLTS DIV switch through the range e CHECK The trace shift should be 1 0 division f Move the cable from the CH 1 OR X input connec tor to the CH 2 ORY input connector Toggle the MODE switch to CH 2 g Rep...

Страница 213: ...5 5V 20 V 3 88 to 4 12 Step 3 Check Non Store Analog Bandwidth a SET VOLTS DIV CH 1 and CH 2 5 mV Vertical MODE CH 1 SEC DIV 10 µs b Connect the leveled sine wave generator output via a 50 Q BNC coaxial cable and a 50 Q BNC termination to the CH 1 OR X input connector c Set the generator to produce a 50 kHz six division display d Increase the signal frequency until a 4 2 division display is obtain...

Страница 214: ...NC termination to the CH 2 OR Y input connector h Repeat part b through e for CH 2 using the CH 2 controls i Set VOLTS DIV CH 1 2 mV Vertical MODE CH 1 SEC DIV 10 µs j Set the leveled sinewave generator to produce a 50 kHz six division display k Increase the signal frequency until a 4 2 division display is obtained 1 Check that the frequency is 2 10 MHz m Repeat part i through 1for CH 2 using the ...

Страница 215: ...horizontal display system that are listed under Warranted Characteristics in Appendix B Specifications You should set up the test equipment as shown at the start of the procedure list Changes to the test set up will be indicated in the procedures if necessary 2212 User Manual Rev 12 92 C 13 ...

Страница 216: ...BNC Termination Item 11 Initial Control Settings Vertical CH 1 and CH 2 POSITION Midrange MODE CH 1 VOLTS DIV 0 5 V VARiable Off AC GND DC DC Horizontal POSITION Midrange MODE ALT MAGN Off SEC DIV 0 05 µs VARiable Off Xl XlO X50 Magnifier Xl Trigger HOLDOFF MIN LEVEL Midrange SLOPE Positive Going MODE P P AUTO SOURCE VERTical MODE COUPLING AC Appendix C Performance Verification ...

Страница 217: ...on over any two of the center eight divisions NOTE For checking the timing accuracy of the SEC DIV switch setting from 50 ms to 0 5 s watch the time marker tips only at the second and tenth vertical graticule lines while adjust ing the Horizontal POSITION control to line up the time markers e Repeat parts b through d for the remaining SEC DIV and time mark generator setting combinations as shown i...

Страница 218: ... for the remaining SEC DIV and time mark generator setting combinations as shown in Table C 3 k SET SEC DIV 0 5 µs Horizontal Magnify X50 1 Select 10 ns time markers from the time marker generator m Use the Horizontal POSITION control to align the first time marker that is 100 ns beyond the start of the sweep with the second vertical graticule line n CHECK Timing accuracy is within 5 0 40 divi sio...

Страница 219: ... 1 µs 1 µs 0 1 µs 20 ns 2 µs 2 µs 0 2 µs 0 04µs 5 µs 5 µs 0 5 µs 0 1 µs 10 µs 10 µs 1 µs 0 2 µs 20 µs 20 µs 2 µs 0 4 µs 50 µs 50 µs 5 µs 1 µs 0 1 ms 0 1 ms 10 µs 2 µs 0 2 ms 0 2 ms 20 µs 4 µs 0 5 ms 0 5 ms 50 µs 10 µs 1 ms 1 ms 0 1 ms 20 µs 2 ms 2 ms 0 2 ms 0 04ms 5 ms 5 ms 0 5 ms 0 1 ms 10 ms 10 ms 1 ms 0 2 ms 20 ms 20 ms 2 ms 0 4 ms 50 ms 50 ms 5 ms 1 ms 0 1 s 0 1 s 10 ms 2 ms 0 2 s 0 2 s 20 ms ...

Страница 220: ...control d CHECK That the sweep length is 10 divisions Triggering Checks C 18 The Triggering Checks procedures check those characteristics that relate to the trigger system and that are listed under War ranted Characteristics in Appendix B Specifications You should set up the test equipment as shown at the start of the procedure list Changes to the test set up will be indicated in the proce dures i...

Страница 221: ...mination Item 11 600 Q ENC Termination Item 12 Initial Control Settings Vertical POSITION Midrange MODE CH 1 CH 1 VOLTS DIV 0 1 V CH 2 VOLTS DIV 1 V VARiable Off AC GND DC CH 1 and CH 2 DC Horizontal POSITION Midrange MODE ALT MAGN Off SEC DIV 0 2 µs VARiable Off Xl X10 X50 Magnifier Xl Trigger HOLDOFF MIN LEVEL Midrange SLOPE Positive Going MODE P P AUTO Performance Tests SOURCE VERTical MODE COU...

Страница 222: ...t a stable display can be obtained by adjusting the Trigger LEVEL control for each switch combination given in Table C 4 with DC HF REJ and AC Trigger COUPLING and that the display will not trigger with NOISE REJ or LF REJ Trigger COUPLING Ensure that the TRIG D light comes on when triggered e Disconnect the test equipment from the instrument and set the CH 1 VOLTS DIV switch to 1 V Table C 4 Swit...

Страница 223: ...ith NOISE REJ or HF REJ Trigger COUPLING Ensure that the TRIG D light comes on when triggered Step 3 Check 5 MHz Trigger Sensitivity a Connect the leveled sine wave generator output via a 50 n BNC coaxial cable and a 50 n termination to the CH 1 OR X input connector Set the SEC DIV to 0 2 µs b Set the leveled sine wave generator to produce a 3 5 division display at an output frequency of 5 MHz at ...

Страница 224: ...5 Check External Trigger Range a SET VOLTS DIV CH 1 0 5 V SEC DIV 20 µs Trigger COUPLING AC Trigger SLOPE Positive Going b Connect the leveled sine wave generator output via a 50 n BNC coaxial cable a 50 n termination and a dual input coupler to the CH 1 OR X and the EXT INPUT OR Z input connectors c Set the leveled sine wave generator to produce a five division display at an output frequency of 5...

Страница 225: ... Trigger Sensitivity a SET Vertical MODE CH 2 VOLTS DIV CH 2 1 V SEC DIV 0 2 ms Trigger SLOPE Negative Going Trigger MODE TV FIELD b Connect the TV signal generator video output to the CH 2 ORY input connector via a 50 n BNC coaxial ca ble c Press the lower part of the VARiable VOLTS DIV control for a one division composite sync signal display d CHECK That a stable display is obtained e SET CH 2 I...

Страница 226: ...und the center horizontal graticule line Toggle the Trigger MODE switch to NORM e Adjust the Vertical POSITION control so that the sweep starts equally around the center horizontal graticule line when switching between the positive and the negative going slope f Press the Trigger SLOPE switch to the positive go ing slope g Adjust the Trigger LEVEL control so that the start of the sweep is aligned ...

Страница 227: ...ree divisions 0 30 V 0 03 V m Disconnect the test equipment from the instrument Step 8 LINE Trigger Function Check a SET CH 2 VOLTS DIV 0 1 V without l0X probe attached CH 2 AC GND DC DC SEC DIV 5 ms Trigger MODE P P AUTO Trigger SOURCE LINE Trigger COUPLING DC Xl XlO X50 Magnify Xl ALT MAGN switch Off b Connect a l0X probe to the CH 2 ORY input connec tor c Attach a length of wire of two inches l...

Страница 228: ...e test set up will be indicated in the procedures if necessary Equipment Required See Table C 1 1OX Probe Provided with the instrument Initial Control Settings Vertical POSITION Midrange MODE CH 1 CH 1 VOLTS DIV 1 V VARiable Off AC GND DC CH 1 and CH 2 DC Horizontal POSITION Midrange MODE ALT MAGN Off SEC DIV 20 µs VARiable Off Xl XlO X50 Magnifier Xl Trigger HOLDOFF MIN LEVEL Midrange SLOPE Posit...

Страница 229: ... flat topped squarewave display See also Figure 2 1 on page 2 4 d CHECK That the display amplitude is between 4 75 to 5 25 divisions X Y Display Checks The X Y Display Check procedures check those characteristics that relate to the X Y Display system and that are listed under Warranted Characteristics in Appendix B Specifications You should set up the test equipment as shown at the start of the pr...

Страница 230: ...ertical POSITION CH 1 and CH 2 Midrange MODE X Y CH 1 VOLTS DIV 10 mV CH 2 VOLTS DIV 1 V VARiable Off AC GND DC CH 1 and CH 2 DC Horizontal POSITION Midrange MODE ALT MAGN Off SEC DIV 0 5 ms VARiable Off Xl X10 X50 Magnifier Xl Trigger HOLDOFF MIN LEVEL Midrange SLOPE Positive Going MODE P P AUTO SOURCE VERTical MODE COUPLING DC Storage STORE ON Off PRETRIG 75 HOLD Off Appendix C Performance Verif...

Страница 231: ... test equipment from the instrument Step 2 Check X Axis Bandwidth a SET VOLTS DIV CH 1 and CH 2 50 mV b Connect the leveled sine wave generator output via a 50 Q BNC coaxial cable and a 50 Q BNC termination to the CH 1 OR X input connector c Set the generator to produce an eight division horizon tal display at an output frequency of 50 kHz d Increase the generator output frequency until the X Axis...

Страница 232: ...C 30 Appendix C Performance Verification ...

Страница 233: ...nsity Readout Midrange BEAMFIND Off VERTICAL MODE CH 1 CH 2 Off CH 2 INVert Off CH 1 CH 2 Coupling DC CH 1 POSITION Ground level at graticule line center screen CH 2 POSITION Ground level at 2nd graticule line below center screen CH 1 CH 2 VOLTS DIV 2V Multiply scale factor by 10 when 1OX probe attached CH 1 CH 2 Bandwidth Limit Off HORIZONTAL Position Midrange MODE ALT MAGNifier Off TRace SEParat...

Страница 234: ... set LEVEL Midrange RESET Off EXT Z Off SLOPE Positive going MODE P P AUTO SOURCE VERT COUPLING DC CURSOR ON Off Off AV1 W2 1H 1 L T Switch AV1 TOGGLE CURSOR Mode Delta Mode AUTO SETUP AUTO Off RECALL Off SAVE Off MENU Off STORAGE ON Off Off PRETRIG 25 HOLD Off RECALL Off SAVE Off PRNSCR Off D 2 Rev 12 92 Appendix D Control Settings at Power Up ...

Страница 235: ... memory Acquisition Sample Interval The time between each sample the instrument acquires from the i nput signal Active cursor The cursor that moves when you turn the Cursor POSITION knob Aliasing A false representation of the signal s waveform due to insuf ficient sampling of high frequencies or fast transitions That is a condition that occurs when a digitizing oscilloscope digitizes at an effecti...

Страница 236: ... triggerable events are not detected within a speci fied time period Useful for displaying a waveform even though the oscilloscope has not been triggered Auto Setup A function that automatically sets front panel controls in a manner that depends on the signals applied to channels 1 and 2 speeding the process of setting up the instrument Bandwidth The highest frequency signal the oscilloscope can a...

Страница 237: ...e cursors A complete single unit of a periodic waveform DC Coupling A means to pass both AC and DC frequency components of the input signal for display Deflection The amount of movement of an indicating device such as a meter needle or oscilloscope trace due to some change in voltage current or resistance Display Sample Interval The time interval between two points of the waveform on the screen Ex...

Страница 238: ...ure waveform parameters Ground GND coupling Coupling option that disconnects the input signal from the vertical system Hardcopy A copy in a format useable by a printer or plotter of the display Holdoff trigger The time after a trigger signal that must elapse before the trigger circuit will accept another trigger signal Horizontal Axis Usually the axis along which an oscilloscope measures the timin...

Страница 239: ...ontal and vertical center lines The 2212 has five minor divisions in each major division in both directions Normal Acquisition Mode The acquisition mode in which the instrument displays one sample point for each point it acquires Normal Trigger Mode A trigger mode in which the instrument does not acquire or display a waveform until a trigger occurs The trigger source level and slope must be set ap...

Страница 240: ... samples in a waveform Record Time Base Mode The time base mode used for most time bases When a trig ger occurs a record of the waveform is acquired and dis played Reference memory Memory in an oscilloscope used to store waveforms or set tings You can use the waveform data for later processing Non volatile reference memory as in your digitizing oscil loscope saves data even after the oscilloscope ...

Страница 241: ...ent and capture data remotely from a computer Sample One point of the waveform Sample Interval The time interval between successive samples in a time base Sampling The process of converting a portion of the input signal to digital form for display and processing Two general methods of sampling are real time sampling and equivalent time sampling Sample Interval See acquisition sample interval or di...

Страница 242: ...conds per division Time base Mode The mode required to display a signal given the time base of the instrument and occasionally also depending on other factors such as trigger mode and whether the instrument is in store mode Possible time base modes are Record and Roll Toggle Button A button that when pressed to let you select between two or more states Trigger The event that tells the oscilloscope...

Страница 243: ...nel A channel manipulated with the variable volts per division VAR switch control This control allows you to scale a waveform vertically so that it takes up an arbitrary number of vertical divisions However after this manipulation the exact number of volts per division for that signal is un known Vertical Axis The axis along which an oscilloscope measures the voltage of a signal in volts per divis...

Страница 244: ...YMode A mode in which both the horizontal and the vertical axes of the instrument represent volts per division The signal acquired through channel 1 is displayed on the x horizon tal axis and the signal acquired through channel 2 is dis played on they vertical axis Y t Format A display where the vertical position of the displayed data points reflects signal level and the horizontal position re fle...

Страница 245: ...nual Index C Cameras A 6 Check Digital Store Bandwidth C 12 5 MHz Trigger Sensitivity C 21 50 MHz Trigger Sensitivity C 22 500 Hz Trigger Sensitivity C 20 500 kHz Trigger Sensitivity C 21 Deflection Accuracy C 1 O External Trigger Range C 22 Non Store Timing Accuracy C 15 Non Store Analog Bandwidth C 11 Sweep Length C 18 Trace Shift C 1 O Trigger Readout C 24 X Axis Bandwidth C 29 X Axis Gain C 29...

Страница 246: ...unding the Product 1 3 H HARDCOPY MENU 5 45 HFREJ 5 27 B 19 High Voltage Probes 5 68 E 12 HOLD Mode 2 13 ON OFF 5 38 HOLDOFF 5 23 Horizontal Controls 5 16 I Display B 5 Non Storage B 5 POSITION 5 16 B 32 Storage B 5 1 0 B 9 Initial Setup 2 1 C 2 Input Connectors 5 13 Coupling 5 11 Installation 1 7 INTENSITY Control 5 4 internal clock 5 18 Internal Graticule 5 3 International Power Cords A 2 L LF R...

Страница 247: ...1 3 PRETRIG 5 38 Print Screen 5 40 Printers Plotters A 6 2212 User Manual Probe ADJUST 5 20 Adjust Check C 26 Compensation 2 3 Connection 5 73 Product Description 1 1 R RATIO 5 34 5 35 Readout Accuracy B 23 READY Indicator 5 24 Recall Reference 5 39 Setup 5 43 RECORD Mode 2 12 Related Documentation iii REM 5 66 Repackaging 5 76 RESET switch 5 23 Index Rise Time Measurement 3 10 3 30 ROLL Mode 2 12...

Страница 248: ...2 Trigger B 7 COUPLING 5 27 B 20 LEVEL 5 22 B 20 MODE 5 24 SLOPE 5 22 SOURCE 5 25 TV FIELD 5 25 Signal Measurement 3 25 Trigger Sensitivity C 23 TV LINE 5 25 Signal Measurement 3 24 TV Trigger Mode B 19 u User Interface B 1 User Text 5 47 E 14 V Variable SEC DIV 5 19 VOLTS DIV 5 12 Vertical Storage Resolution B 31 Viewing Hoods A 5 Voltage Probes A 5 Ratio Measurement 3 4 VOLTS DIV 5 11 w Warrante...

Страница 249: ...to printing and shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on the following pages A single change may effect several sections Since the change information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page ...

Страница 250: ......

Результаты поиска

Содержание 2212

Отзывы:

Похожие инструкции для 2212

Бренды по названию

Популярные бренды

Tektronix 2212, Руководство пользователя

Результаты поиска

Содержание 2212

Отзывы:

Похожие инструкции для 2212

Бренды по названию

Популярные бренды