Tektronix P6042 Instruction Manual
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Tektronix P6042 Instruction Manual

Tektronix P6042 Instruction Manual

Probe
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NSTRUCT ON
MANUAL
erial Number
6042
ROBE
Tektronix, Inc.
.W. Millikan Way • P. O. Box 500 • Beaverton, Oregon 97005 • Phone 644-0161 • Cables: Tektronix
967
070-0629-00

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Summary of Contents for Tektronix P6042

  • Page 1 NSTRUCT ON MANUAL erial Number 6042 ROBE Tektronix, Inc. .W. Millikan Way • P. O. Box 500 • Beaverton, Oregon 97005 • Phone 644-0161 • Cables: Tektronix 070-0629-00...

  • Page 2: Warranty

    WARRANTY All Tektronix instruments are warranted against defective materials and workman ­ ship for one year. Tektronix transformers, manufactured in our own plant, are war ­ ranted for the life of the instrument. Any questions with respect to the war ­...
  • Page 4 Characteristics — Type P6042 Fig. 1-1. P6042 Current Probe and accessories.
  • Page 5 Information column of Table 1-1 provides additional information about the probe and describes cer ­ The P6042 is powered by a regulated power supply con ­ tain conditions that pertain to the performance requirements. tained within the instrument, independent of associated test...
  • Page 6 Characteristics — Type P6042 TABLE 1-1 cont) ELECTR CAL CHARACTER ST CS Characteristic Performance Requirement upplemental Information Voltage-Feedthrough ≤ 250 µ A/V at 50 MHz. usceptibility External Magnetic Field ≤ 250 µA/Gauss, at 60 Hz. usceptibility Required Output Load Impedance 50 Ω.
  • Page 7 Characteristics — Type P6042 ®ï...
  • Page 8 Characteristics — Type P6042...
  • Page 9 Operating Voltage The P6042 can be powered from either a 115-volt or a 230- volt nominal line voltage source. The line voltage selector Fig. 2-1. Line Voltage Selector assembly on the rear panel (shown assembly on the rear panel converts the instrument from with cover removed).
  • Page 10 Operating nstructions — Type P6042 Fig. 2-2. Function of front panel controls and connectors.
  • Page 11 NOTE oscilloscope. To remove any magnetic flux present in the probe 1. Connect the P6042 OUTPUT to the input of the oscillo ­ transformer core, always degauss the probe after scope (or termination), using a 50-ohm coaxial cable. Fig. 2-3. P6042 Currant Probe connected to Type 106 Square-Wave Generator output.
  • Page 12 Figure 2-3 shows a test application, using for the which may magnetized (such as on transistors). signal source the Fast Rise output of a Tektronix Type 106 This magnetic flux will cause erroneous readings quare-Wave Generator and a 50-ohm terminating current in the more sensitive positions.

  • Page 13: Power Supply

    POWER SUPPLY C 1 52 and C 1 72 provide filtering for the respective regulated supplies. The power supply provides the power for the P6042 from two regulated supplies, +16 volts and — 16 volts. Elec ­ + 16-Volt Supply tronic regulation is used to provide stable output voltages.

  • Page 14: Current Probe

    CURRENT PROBE AMPL F ER CURRENT PROBE Low Frequency Amplifier The P6042 Current Probe contains a stationary core around which is wound a 50-turn secondary, a movable core which slides over the end of the stationary core, a ground switch, With the probe connected to the conductor under test, and and a Hall voltage device.
  • 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 terminals of the Hall device are equal in amplitude an d op ­ at very low flux densities, providing excellent sensitivity and posite in polarity.

  • Page 16: Amplifier Operation

    Circuit Description — Type P6042 beyond the maximum specified level is applied, the probe Amplifier Operation may be magnetized. A portion of this magnetic flux is likely When the current waveform in the conductor under test to remain in the current probe core, causing erroneous meas ­...

  • Page 17: Maintenance

    P6042. If trouble occurs in the the end of the probe. Be careful that the metal ball does probe or amplifier, corrective maintenance should be per ­...
  • Page 18 Maintenance — Type P6042 Fig. 4-2. Locations of components mounted on circuit boards. (A) Amplifier circuit board (B) Decoupling circuit board.

  • Page 19: Troubleshoot Ng

    Maintenance — Type P6042 Recalibration Probe Cleaning To assure the correct and accurate operation of the P6042 Use a soft bristle brush to dislodge the dust and wipe clean with a lint-free cloth. If a persistent coating of dirt Probe, it should be checked after each 1000 hours of opera ­...
  • Page 20 Maintenance — Type P6042 Fig. 4-3. Locations of color code of wiring connections. (A) Amplifier circuit board (B) Decoupling circuit board.

  • Page 21: Replacement Parts

    The following paragraphs 6. Clip off any excess lead length extending beyond the provide information that may be helpful if parts in the P6042 circuit board and clean off any residual flux with a flux ­...
  • Page 22 Maintenance — Type P6042 Probe Cable Replacement 3. Loosen the cable clamp on the back of the front sub ­ panel and straighten the cable. If the probe cable becomes defective, it may be replaced 4. Pull the cable through the front-panel grommet and as follows: remove the probe strain relief boot from the cable.

  • Page 23: General Nformation

    P6042 Current Probe. PREL M NARY PROCEDURE If substitute equipment is used, it must equal or exceed the given requirements in order to check the P6042 to the given et the Voltage and Range elector switches on the accuracy.
  • Page 24 Position P6042 Current Probe g. Remove the probes from the 10 Ω loop, place the P6042 probe in the holder (lock the slider), and remove the OUTPUT DC LEVEL midrange 1 X probe from the oscilloscope input. Push Upper and...
  • Page 25 Mode Hi Amplitude Power c. Remove the cable from the P6042 OUTPUT and connect to the square-wave generator Hi Amplitude output, using the GR-to-BNC adapter. d. Adjust the square-wave generator Amplitude for 5 centimeters of deflection (1 volt).
  • Page 26 CURRENT/DIV BALANCE. ource et the controls as follows: b. Connect the cable from the P6042 OUTPUT to the DC torage Oscilloscope to 100 MHz test oscil lo scope Ch 1 Input, terminated in 50 Upper...

  • Page 27: Check Bandwidth

    Performance Check — Type P6042 Constant Amplitude ignal Generator b. Increase the frequency of the constant amplitude signal generator until the amplitude of the display reduces from 5 50 kHz Only Frequency Range centimeters to 3.5 centimeters. ee Fig. 5-6.
  • Page 28 NOTES...
  • Page 29 Tektronix Part No. 016-0039-00. equipment is used, it must equal or exceed the given require ­ ments in order to calibrate and check the P6042 to the given 17. Resistor, 10 Ω, ±10%, 1/4 W, Tektronix Part No. 316- accuracy.
  • Page 30 Calibration — Type P6042 Fig. 6-1. Test equipment recommended.
  • Page 31 1, 2, 5 sequence from 1 mA to 1 A. et the Line Voltage elector switch on the rear of the P6042 to the appropriate position to match the line voltage being used (115 volts or 230 volts). et the Range elector □...
  • Page 32 Calibration — Type P6042 Fig. 6-2. Preliminary test setup. Input Atten Storage Oscilloscope A Input Coupling Enhance Mode B Input Coupling Upper creen torage Display A - B Lower creen torage Millivolts/cm creen elector Full Variable Calib Auto Erase Position...
  • Page 33 Connect the P6042 power cord to the variable autotrans ­ a. Using an ohmmeter, measure the resistance to ground former, set to 115 volts (230 volts) and turn the P6042 POWER at the +16 volt test point (see Fig. 6-3 for location of test on.
  • Page 34 Calibration — Type P6042 Fig. 6-4. Test setup for step 4. d. Vary the autotransformer voltage from 104 to 126 volts High Freq 3 dB Point 300 Hz (208 to 252 volts) and check for no trace shift. Return to 115 DC Offset volts (230 volts).
  • Page 35 16 volt supply at 500 volts/cm. 7. Check PROBE UNLOCKED ndicator c. Connect a ground lead from the 1 X probe to the P6042 chassis near J80. a. Remove the probe from the front-panel holder. Pull the d. Hold the probe tip on the center conductor of J80 and...
  • Page 36 Calibration — Type P6042 Fig. 6-7. Positioning range of OUTPUT DC LEVEL, with test oscillo ­ scope set to 0.1 v/cm. b. Check to see that the front-panel PROBE UNLOCKED indicator is on and the trace is off screen. c. Push the slider forward into the closed position. The PROBE UNLOCKED indicator should extinguish and the trace should come on screen.
  • Page 37 Calibration — Type P6042 c. Connect the P6042 probe to the 10 Ω loop. Lock the slider. d. Connect the 1 X probe across the 10 Ω resistor. ee Fig. 6-9. witch Triggering Mode to Trig, ource to Norm, Time/...
  • Page 38 Calibration — Type P6042 Fig. 6-11. Preliminary test setup for steps 10 and 11. Fig. 6-12. Test setup for steps 10 and 11. 6-10...
  • Page 39 Calibration — Type P6042 Fig. 6-13. Test setup for step 12. i. Remove the probe from the current loop and connect degauss the probe. Check for 5 centimeters of deflection. to the test oscilloscope 5 mA current loop. et the Calibrator switch to the 5 mA square-wave position.
  • Page 40 Calibration — Type P6042 Fig. 6-15. Maximum random trace shift at 5 sec/cm, stored. witch CURRENT/DIV to 10 mA and remove the two 10X attenuators. Connect current loop and probe as in Fig. 6-12. e. Check the amplitude of the display for no more than ≤...
  • Page 41 Calibration — Type P6042 Fig. 6-16. Test setup for step 14. b. Connect the cable from the P6042 OUTPUT to the DC Vertical Plug- n to 100 MHz test oscilloscope Ch 1 Input, terminated in 50 Ω. Mode Ch 1 c.
  • Page 42 Calibration — Type P6042 R105 R100 Cl 00 R102 F RST F RST F RST F RST 0.1 µS 10 µS F RST F RST 5 µS Fig. 6-17. Location of compensation adjustment and square-wave time relationship of each. NOTES...
  • Page 43 Calibration — Type P6042 Fig. 6-18. Test setup for step 15. 15. Check Aberrations .2 volt, Time/cm to .2 µs and turn X10 Mag on. c. Adjust pulse generator Amplitude and test oscillocope a. Remove the current loop and probe from the square ­...
  • Page 44 DC to 100 MHz Test Oscilloscope Volts/cm Time/cm µS Input Coupling trace centered Vertical Position Constant Amplitude Signal Generator Frequency Range 50 kHz Only Amplitude Amplitude Range .5 - 5V Fig. 6-20. Dynnamic range of P6042, test oscilloscope set to 0.5 Power V/dlv. 6-16...
  • Page 45 R100, adjusted in step 14, as this ad ­ justment greatly affects the risetime of the high frequency amplifier. d. Calculate the risetime of the probe from the measured bandwidth. Fig. 6-21. Bandwidth of P6042 50 kHz display 50 MHz display. 6-17...
  • Page 46 NOTES...
  • Page 47 ABBREV AT ONS AND SYMBOLS inductance A or amp amperes lambda — wavelength alternating current AC or ac » large compared with audio frequency less than alpha — common-base current amplification factor < low frequency amplitude modulation length or long approximately equal to low voltage beta —...
  • Page 48 PARTS ORDER NG NFORMAT ON Replacement parts are available from or through your local Tektronix, Inc. Field Office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available, and to give you the benefit of the latest circuit improvements developed in our engineering department.
  • Page 49 P6042 Probe SECTION 7 ELECTRICAL ARTS LIST Values are fixed unless marked Variable. Tektronix erial/Model No. Ckt. No. Part No. Disc Description Bulbs 150-0046-00 Incandescent B141 150-0019-00 Neon w/translucent lens Capacitors Tolerance ±20% unless otherwise indicated. 290-0136-00 2.2 µF Elect.
  • Page 50 Electrical Parts List — P6042 Probe Capacitors cont) Tektronix erial/Model No. Ckt. No.Part No. Disc Description C 1 76 283-0059-00 1 µF 25 V +80%-20% C 1 77 290-0272-00 47 µF Elect. 50 V C1 83 283-0144-00 500 V 33 pF...
  • Page 51 Electrical Parts List — P6042 Probe Transistors Tektronix erial/Model No. Ckt. No. Part No. Disc Description 151-0188-00 ilicon 2N3906 151-0188-00 ilicon 2N3906 *151-0192-00 ilicon Replaceable by MP -6521 *151-0238-00 elected *151-0134-00 ilicon Replaceable by 2N2905 *151-0134-00 ilicon Replaceable by 2N2905...
  • Page 52 Electrical Parts List — P6042 Probe Resistors cont) Tektronix erial/Model No. Disc Description Ckt. No. Part No. 2 kΩ ¼ W 315-0202-00 500 Ω, Var 311-0634-00 ¼ W 315-0100-00 10 Ω 315-0201-00 200 Ω ¼ W ¼ W 315-0201-00 200 Ω...
  • Page 53 Electrical Parts List — P6042 Probe Resistors cont) Tektronix erial/Model No. Ckt. No. Part No. Disc Description 315-0151-00 150 Ω ¼ W 315-0102-00 1 kΩ ¼ W 315-0202-00 2 kΩ ¼ W 311 -0006-00 1 kΩ, Var 311-0609-00 2 kΩ, Var 321 -0247-00 3.65 kΩ...
  • Page 54 Electrical Parts List — P6042 Probe Switches conf) Tektronix erial/Model No. Ckt. No. Part No. Disc Description Wired or Unwired CURRENT/DIV 260-0851-00 Rotary 260-0516-00 Push POWER W141 260-0834-00 Toggle Transformers *120-0464-00 Transformer Assembly *120-0501-00 Toroid, 7 turns bifilar T140 *120-0497-00...
  • Page 55 Mounting hardware must be purchased separately, unless otherwise specified. PARTS ORDER NG NFORMAT ON Replacement parts are available from or through your local Tektronix, Inc. Field Office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available, and to give you the benefit of the latest circuit improvements developed in our engineering department.
  • Page 56 P6042 Probe SECTION 8 MECHANICAL ARTS LIST F G. 1 P6042 PROBE PACKAGE Fig. & Index Tektronix erial/Model No. Description Part No. Disc PROBE PACKAGE 1 — 7 010-0207-00 PROBE PACKAGE, P6042 probe package includes: PROBE ONLY 010-0206-00 PROBE, P6042...
  • Page 57 Mechanical Parts List — P6042 Probe F G. 2 P6042 PROBE Fig. & Index Tektronix erial/Model Description Part No. Disc 010-0221-00 PROBE, P6042 probe includes: 204-0293-00 BODY, probe, bottom 204-0288-00 BODY, probe, top 351-0121-00 LIDE A EMBLY 214-0835-00 PRING, compression...
  • Page 58 Mechanical Parts List — P6042 Probe F G. 3 AMPL F ER POWER SUPPLY UN T Fig. & Index Tektronix erial/Model No. Description Part No. Disc 3 4 5 010-0206-00 PROBE, P6042 probe includes: 366-0148-00 KNOB, charcoal — OUTPUT DC LEVEL...
  • Page 59 Mechanical Parts List — P6042 Probe F G. 3 AMPL F ER & POWER SUPPLY UN T cont) Fig. & Index Tektronix erial/Model No. Description Part No. Disc 3-28 358-0314-00 BU HING, strain relief 220-0455-00 NUT, block mounting hardware for each: (not included w/i 211-0101-00 CREW, 4-40 x'A inch, 100°...
  • Page 60 Mechanical Parts List — P6042 Probe F G. 3 AMPL F ER & POWER SUPPLY UN T conf) Fig. & Index Tektronix erial/Model Description Part No. Disc 3-62 384-0660-00 ROD, spacing mounting hardware for each: (not included w/rod) 212-0044-00 CREW, 8-32 x ½ inch, RH...
  • Page 61 Mechanical Parts List — P6042 Probe F G. 3 AMPL F ER & POWER SUPPLY UN T cont) Fig. & Index Tektronix erial/Model Description Part No. Disc 2 3 4 200-0762-00 COVER, line voltage selector cover includes: 352-0102-00 HOLDER, fuse, plastic...
  • Page 62 Mechanical Parts List — P6042 Probe F G. 4 CAB NET Fig. & Index Tektronix erial/Model Description Part No. Disc 3 4 5 437-0091-00 EMBLY, cabinet assembly includes 124-0199-00 TRIP, trim, pivot arm, left 124-0198-00 TRIP, trim, pivot arm, right...
  • Page 63 Mechanical Parts List — P6042 Probe F G. 4 CAB NET cont) Fig. & Tektronix Index erial/Model Description Part No. Disc 3 4 5 4-24 426-0337-01 FRAME, section, left 124-0196-00 TRIP, trim, frame section, left 426-0338-01 FRAME, section, right 124-0197-00...
  • Page 64 * ’ HE.RMAL COUPLER EE PART LI T FOR EMICONDUCTOR TYPE AMPLIFIER '&...
  • Page 65 P 6 042 CURRENT PROBE 50MHz.
  • Page 66 (STANDARD ACCESSOR ES) F G. 1 P6042 PROBE PACKAGE P6042 PROBE...
  • Page 67 F G. 2 P6042 PROBE MECHAN CAL PARTS...
  • Page 68 F G. 3 AMPL F ER & PO...
  • Page 69 3 AMPL F ER & POWER SUPPLY P6042 PROBE...
  • Page 70 F G. 4 CAB NET...
  • Page 71 F G. 4 CAB NET P6042 PROBE...
  • Page 72 CORREC IONS Characteristics Section 1 Page 1-4 Fig. 1-3 CHANGE: the caption to read: Fig. 1-3. P6042 maximum input current vs. frequency curve. C2/M13O42/1O67 (Revised)

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