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Tektronix P6042 PROBE Instruction Manual

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INSTRUCTION
MANUAL
P6042
PROBE
Tektronix, Inc.
Box 500 • Beaverton , Oregon
97005 •
Phone 644·0161
• C a b l es: Tektronix
S.W. M i l l i k a n Wa y .
P. O.
070.0629.00
967

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  • Page 1 INSTRUCTION MANUAL P6042 PROBE Tektronix, Inc. Box 500 • Beaverton , Oregon 97005 • Phone 644·0161 • C a b l es: Tektronix S.W. M i l l i k a n Wa y . P. O. 070.0629.00...
  • Page 2 WARRANTY All Tektronix instruments are warranted against defective materials and workman­ ship for one year. Tektronix transformers, manufadured in our own plant, are war­ ronted for the lif. of the instrument. Any que.tions with respect to the war­ ranty mentioned obove should be token...

  • Page 3: Table Of Contents

    CONTENTS Characteristics Section Section Operating Instructions Section Circuit Description Maintenance Section Performance Check Section Section Calibration Abbreviations and Symbols Parts Ordering Information Section Electrical Parb List Mechanical Parts list Information Mechanical Parts list Section Section Diagrams Mechanical Parts list IIlustrotions Accessories Abbreyiations and symbols used in this manual are based on, or taken directly from, EEE Stand·...
  • Page 4 Characteristics-T ---,- • .., -­ "'" ..� .- . ond au.norl ...

  • Page 5: Section I Characteristics

    Introduction with a 100 MHz oscilloscope (such as the Type 647 A with The Tektronix P6042 Current Probe is designed for use with 10A2A and 11 B2A plug-in units). The specifications listed in oscilloscope systems having either 50-ohm or high-impedance the table include only the performance of the P6042 Current inputs.
  • Page 6 Characteristics-Type P6042 TABLE 1-1 (cont) ELECTRICAL CHARACTERISTICS -- - -- Characteristic Performance Requirement Supplemental Information Voltage-Feedthrough ::;; 2 50 flA/V at 50 MHz. Susceptibility ___ � � _ c--__ External Magnetic Field ::;; 2 50 !-lA/Gauss, at 60 Hz. Susceptibility �...
  • Page 7 Characteristics-Type P6042 PEAK TO PEAK CURRENT IN AMPERES : I � ' . : . . ; _1 " · : : : . : . : I ! I : :I!. ::�, . :� : 1::: ::t' 1;-. jr.l : .

  • Page 9: Section 2 Operating Instructions

    Type P6042 SECTION 2 OPERATING INSTRUCTIONS Change information, if any, affecting Ihis section is found allhe rear o f Ihe manual. General The P6042 Current Probe is designed to work into either a 5O-0hm system or a high impedance oscilloscope using a 50-ohm termination.
  • Page 10 Operating '"structia"r-Type P6042 Slid., (,p,lng.load.dl Conlgin. mO¥Dabi. • ",o¥Dobl. portion •• of frandonn •• coro oround c.nduelo. - Mu,1 (D ••• b. pUlh ... 'o ..ord inlo loc.'" po,ilion for op gtlon. •• Conlgin IGlionory Ground I"minol Connoel, • • portion of Irgnl' 10 g.ound (Up i,1Id whon •...
  • Page 11 Operating Inlfruction5-- T ype P6042 through the holes in the cabinet. The clearance provided by 2. Turn the oscilloscope and P6042 power on and allow five the feel on the bottom of the instrument should be main­ minutes warm-up time [at 25°C). tained.
  • Page 12 This should be kept in mind when position. Figure 2-3 shows a test application, using for the making readings of DC current in ferrous leads signal source the Fast Rise output of a Tektronix Type 106 w hich may magnetized (such as on transistors).

  • Page 13: Section 3 Circuit Description

    Type 6042 SECTION 3 CIRCUIT DESCRIPTION C h a nge inform atio n , if a ny, affecting this section is fo u n d at the rear of the m a n u a l . In this section you will find descriptions o f the circuitry Power is applied to the transformer primary through the in the power supply, the current probe, and the current probe power plug (P14l), the power switch (SW14l) and the fuse...
  • Page 14 Circuit Description-Type P6042 As the probe is connected around the current-carrying Q167, the feedback transistor, has a zener diode in its conductor, the spring-loaded slider, when released, positions emitter circuit, holding the voltage at 7.5 volts. From the the movable portion of the transformer core over the station­ voltage divider in the output (Rl64, R165, and R166), a ary portion.
  • Page 15 Circuit Description-Type P6042 system permits the Hall element and ferrite core to operate under test. The low-frequency waveforms at the two output at very low flux densities, providing excellent sensitivity and terminals of the Hall device are equal In ampllTuue anu op­ posite in polarity.
  • Page 16 Circuit Description-Type P6042 beyond the maximum specified level is applied, the probe Amplifier Operation may be mag netized. A portion of this magnetic flux is likely When the current waveform in the cond uctor under test to remain in the current probe core, ca usi:lg erroneous meas­ (see Fig.

  • Page 17: Section 4 Maintenance

    The probe is shown disassembled 4-1. Move the probe slider to the open position. Fig. SLIDE ASSEMBLY SPRING HOLDER STRAIN RELIEF BOOT 8-PIN CONNECTOR � � SCREWS BODY, BOTTOM Fig. 4-1. Disassembled P6042 Probe. 4- 1...
  • Page 18 Maintenanc..-Type '6042...
  • Page 19 Do n o t use a n y org a n ic solve n ts to clean the probe. The following information is provided to aid in loca ting and correcting trouble in the P6042 Probe. Information found in the Circuit Description, Performance Check, a nd Calibra­ Probe Assembly tion will a lso be hel pful when attempting to troubleshoot the instrument.
  • Page 21 ·be repaired, replace as fol lows: Replacements for a l l electrical a nd mechanical parts used in the P6042 Probe and ampl ifier ca n be obtai ned through 1 . Disconnect a l l wiring connections from the circuit board.
  • Page 22 Maintenance-Type P6042 3. Loosen the cable clamp on the back of the front sub­ Probe Cable Replacement panel and stra ighten the cable. If the probe ca ble becomes defective, it may be replaced 4. Pull the ca ble through the fron t-panel grommet and as foll ows: remove the probe strain relief boot from the cable.

  • Page 23: Section 5 Performance Check

    8. GR a terminating current loop, Tektronix Part No. Failure to meet the req uirements given in this procedure 067-0559-00.
  • Page 24 P6042 Current Probe g. Remove the probes from the 1 0 loop, place the P6042 probe in the holder (lock the sl ider), and remove the OUTPUT DC LEVEL midrange 1 X probe from the osci lloscope input. Push Upper and...
  • Page 25 Performance Check-Type P6042 h. Switch CURRENT/DIV to . 2 A, .5 A, and 1 A positions 4. Check CU RRENT I DIV BALANCE Range and check for deflections of 1 , 0.4, a nd 0.2 centimeter, a. Set CURRENT / DIV to 1 0 mA, dega uss the probe a nd respectively.
  • Page 26 Performance Check-Type P6042 k. Change CURRENT / DIV to 2 mA and check for 2.5 centimeters of deflection. 7. Check Noise a. Connect the two GR l O X 50 a ttenua tors and the current l oop to the squa re-wave generator Hi Amplitude output.
  • Page 27 Performance Check-Type P6042 b. Increase the frequency of the consta nt amplitude signal Constant Ampl itude Signal Generator generator unti l the am plitude of the display reduces from 5 Frequency Range 50 kHz Only centimeters to 3.5 centi meters. See Fig. 5-6. Amplitude Amplitude Range .5 - 5 V...
  • Page 28 NOTES...

  • Page 29: Section 6 Calibration

    P6042 to the given 1 7. Resistor, 1 0 0, ± 1 0 % , '/4 W, Tektronix Part No. 3 1 6- accuracy.
  • Page 30 Calibration-Type P6042 "" ". " '''I " "" " "n 6· 2...
  • Page 32 Calibration-Type P6042 • " � '. ' r TT • • , _ 0) Storage Oscilloscape Input Atten A Input Coupling Enhance Mode Input Coupling Upper Screen Storage A , ' Display lower Screen Storage Millivolts/cm Screen Selector Full Variable Calib Auto Erose Position...
  • Page 33 P6042 Calibration-Type RI57 RIPPLE NULL R165 R I 2 R 1 6 " + " TEMP VOLTS VOlTS COMP Fig. 6.3. o"d 10.1 pol"tt. Dd l v'''''o"lt .. of 1"'-"'01 locollo CALIBRATION Adjust + 1 6 Volts IR1 6S1 Check Regulation 1 .
  • Page 36 P6042 CalibratioA-Type I o n USISTOIt LlYEL, wllh 1.11 Fig. 6.1. POlltlonlng rong. of OUTPUT DC olclllo· 'tI/em. ICOp o 0.1 b. Check to see thot the front-ponel PROBE UNLOCKED indicator is on and the trace is off screen. Push the slider forward into the closed position. The PROBE UNLOCKED indicator should extinguish and the trace should come on screen.
  • Page 37 P6042 Calibration-Type Connect the P6042 probe to the 1 0 loop. Lock the slider. d. Connect the 1 X probe across the 1 0 resistor. See Fig. 6-9. e. Switch Triggering Mode to Trig, Source to Norm, Time/ cm to 50 ms, and display to Single Sweep. Set High Freq 3 dB Point to 500 kHz.
  • Page 38 ype P6042 Calibration-T � . Hm -. � � . : r ' rrT • • _.--- • • ­ . " . • • • • • Fig. 6 · 1 1 . Prellmln '.'up , lI.p. 10 ond 1 1 II'''' 'u' •...
  • Page 39 Calibration--Type P6042 degauss the probe. Check for centimeters of deflection. Remove the probe from the current loop and connect to the test oscilloscope rnA current loop. Set the Colibrator switch to the rnA square-wave position. k. Change CURRENT/DIV to rnA and check for centi­...
  • Page 40 Calibration-Type P6042 Fig. 6- 1 5 . Maximum random trace shift at 5 sec/em, stored. d. Switch CURRENT /DIV to 1 0 mA a nd remove the two l O X attenuators. Connect current loop a nd probe as i n Fig. 6-1 2.
  • Page 41 Calibration-Type P6042 Vertical Plug-In b. Connect the coble from the P6042 OUTPUT to the DC to l oo MHz test oscilloscope Ch Input. terminoted in son. Ch , Mod. c. Connect the current loop to the squore-wove generator Trigger Norm -Transition output.
  • Page 42 P6042 Calibration-Type " " 1105 Cl00 FIIST �IIST FIRST ." �IIST 5 ,uS 5 ,uS FI". 6·17. LO(Cltlon of (omptln ... tlon Cldlullmlnl and lCIua . lime .elallonlhlp of loch. .. _. NOTES 6-14 ®...
  • Page 43 P6042 Calibration-Type fll. 6.11. Tell letup 1.5. f.r II"" volt, Time/em to and turn 10 Mog on. � 1 S. Check Aberrations c. Adiust pulse generator Amplitude and test osciliCKope a. Remove the current loop and prabe from the square· Trig level obtain 4-centimeter display.
  • Page 44 Calibration-Type P6042 FIlii . 6-19. f H' IMpI setup for 1 6 and 17. 16. Check AC Dynamic Range Conned the current loop to the cOllStont olTlPlitude sig­ nal generotor output. the controls os follows: DC to 1 00 MHz Test Oscilloscope Volts/em Time/em "' '''...
  • Page 45 Calibration-Type P6042 c. Degauss the probe and connect to the current loop. See Fig. 6-1 9. d. Switch test osci l loscope input coupling to DC and adjust CURRENT/ DIY BALANCE to center the display on the CRT. Trigger the sweep. I ncrease the signal generator Am plitude until waveform distortion occurs.
  • Page 46 NOTES -�-�-�� -- -- - - - - ------ --...

  • Page 47: Abbreviations And Symbols

    ABBREVIATIONS AND SYMBOLS A or a m p a m peres i n d uctance a lt e r n a t i n g c u rr e n t l a m bda-wav e l e n g t h AC o r a c l a r g e c o m p a r e d w i t h a ud i o frequency...

  • Page 48: Parts Ordering Information

    PARTS ORDERI N G I N FORMAT I O N R e p l a ce m e n t parts a r e a va i l a b l e from o r t h r o u g h y o u r l o c a l Tektr o n i x , I n c .
  • Page 49 P6042 Probe ..SECTION 7 ELECTRICAL PARTS LIST Val ues are fixed unless marked Variable. Seri a l/Model No. Tektro n i x C kt. Part No. Disc Bulbs 1 50-0046-00 I ncandescent Neon w/translucent lens B 1 41...
  • Page 50 E l ectrical Parts List-P6042 Probe (cont) Capacitors Te ktro nix Seria l /Model No. Part C k t. No. N o . Disc Description C1 76 283-0059-00 1 f.LF 25 V + 80% - 20% C 1 77 290-0272-00 47 f.LF...
  • Page 51 Electrical Parts List-P6042 Probe Transistors Seri al /Model No. Tektronix Description Part No. Disc C kt. No. Silicon 1 51 -01 88-00 2N3906 1 51 -01 88-00 Si licon 2N3906 * 1 51 -01 92-00 Silicon Replaceable by MPS-6521 Q 29...
  • Page 52 Electrical Parts List-P6042 Probe (cont) Resistors Te ktro n ix Seri a l /Model No. C k t. No. Part No. Disc Description 1/ 4 W 2 ko 31 5-0202-00 5 "10 500 0, Var 31 1 -0634-00 1/4 W 1 0 0 5 "10...
  • Page 53 Electrical Parts List-P6042 Probe Resistors {conti Tektro n ix Serial/Model No . D is c Description Ckt. N o. Part No. 1 /4 1 50 0 3 1 5-01 51 -00 1 ko 31 5-01 02-00 1 /4 3 1 5-0202-00...
  • Page 54 E lectrical Parts List-P6042 Probe (cont) Switches Tektronix Serial/Model No. Ckt. No. Part No. Description Disc Wired or Unwired SW60 260-0851 -00 Rotary CU RRENT I D I V SW70 260-051 6-00 Push SW1 41 260-0834-00 Toggle POWER Transformers Transformer Assembly...
  • Page 55 Mounting hardware must be purchased separately, u n l ess oth erwise specified . PARTS ORDERING INFORMATION Replacement parts are available from or through your local Tektronix, Inc. Field Office or representative. Changes to Tektronix instruments are sometimes made to accommodate im proved components as they become available, and to give you the benefit of the latest circuit improvements developed in our engineering department.

  • Page 56: Section 8 Mechanical Parts List

    P6042 Probe SECTION 8 MECHANICAL PARTS lIST FIG. 1 P6042 PROBE PACKAGE & Fig . I n dex Tektro n i x Serial/Model N o . Description N o . P a r t No. Disc PROBE PACKAGE 1 -7...
  • Page 57 Mechanical Parts List-P6042 Probe FIG. 2 P6042 PROBE & Fig. I ndex Tektronix Serial/Model No. Description Part No. Disc 01 0-0221 -00 PROBE, P6042 - - - - - - probe incl udes: 204-0293-00 BODY, probe, bottom BODY, probe, top...
  • Page 58 Mechanical Parts List-P6042 Probe FIG. AMPLIFIER & POWER SUPPLY UNIT & Fig. I n dex Te ktronix Seria l/Model No. Part No. Disc PROBE, P6042 01 0-0206-00 - - - - - - probe incl udes: 366-01 48-00 KNOB, charcoal-OUTPUT DC LEVEL...
  • Page 59 Mechanical Parts List-P6042 Probe (cant) FIG. AMPLIFIER & POWER SUPPLY UNIT Fig . & n de x Tektron ix Seria l/Model No. Descri ption Disc Part No. 3-28 358-031 4-00 BUSH ING, strain relief 220-0455-00 NUT, block - - - - - - mounting hardware for each: (not included w /n ut) SCREW, 4-40 x 1 / 4 i nch, 1 00 °...
  • Page 60 Mechanical Parts List-P6042 Probe (cant) FIG. AMPLIFIER & POWER SUPPLY UNIT Fig. & I n de x Te ktronix Serial/Model No. Descri ption Part No. D isc 3-62 384-0660-00 ROD, spaci ng - - - - mounting hardware for each: (not i ncl uded w/ rod)
  • Page 61 Mechanical Parts List-P6042 Probe FIG. AMPLIFIER & POWER SUPPLY UNIT (cont) Fig . & I n d ex Tektron ix Seria l/Model No. Description Part No. Disc 200-0762-00 COVER, l i ne voltage selector - - - - - cover incl udes:...
  • Page 62 Mechanical Parts List-P6042 Probe FIG . 4 CABINET & Fig. Tektronix Serial/ Model No. I ndex Description Part No. Disc ASSEMBLY, cabinet 437-0091 -00 - - - assembly incl udes STRIP, trim, pivot arm, left 1 24-01 99-00 STRI P, trim, pivot arm, right...
  • Page 63 Mechanical Parts List-P6042 Probe FIG. CABINET (cant) & Fig . I nd e x T ektron i x Seria l/Model No. Description Part No. Disc FRAME, section, left 4-24 426-0337-01 STRIP, trim, frame section, left 1 24-01 96-00 FRAME, section, right...
  • Page 64 �w..q. o I f- ------- , - -, DEG'U�S : ! I Q 79 - I �V SW60 - - - - - - - - - - - - - 1 L _ _ .1 _ _ _ _ _ - - -, J 80 �...
  • Page 65 �W40 - - - -i ­ DEGAu�5 R62 · C6Z _ l S - + 1 0V --o R 51 - 1 (;, \1 - I CDV T140 2� �� �� � � ).ll � - - - &�--t � I I �N -.-l .
  • Page 66 PRO t!lE P6 04'.2:...
  • Page 67 P6042 PROBE MECHANICAL PARTS FIG. 2...
  • Page 68 FIG. AMPLIFIER & PO...
  • Page 69 AMPLIFIER & POWER SUPPLY P6042 PROBE...
  • Page 70 FIG. CABINET...
  • Page 71 FIG. 4 CABINET P6042 PROBE...
  • Page 72 P6042 TEXT CORRECTIONS C harac teristics Section 1 Page 1-4 Fig . 1-3 CHANGE : the caption to read : Fig . 1-3 . p6042 maximum input current vs . frequency curve . C2/M13042/106? ( Revis ed)
  • Page 73 K4XL's � BAMA This manual is provided F R E E O F C HARG E from the " BoatAnchor Manual Archive" as a service to the Boatanchor com m u n ity. It was u ploaded by someone who wanted to help you repair and maintai n you r eq u ipment.

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