Tektronix TCP202 Instruction Manual
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Tektronix TCP202 Instruction Manual

Tektronix TCP202 Instruction Manual

Voltage tester 15 ampere ac/dc current probe
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Instruction Manual
TCP202
15 Ampere AC/DC Current Probe
070-9542-00

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  • Page 1 Instruction Manual TCP202 15 Ampere AC/DC Current Probe 070-9542-00...
  • Page 2 Copyright Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000...
  • Page 3 Tektronix, shipping charges prepaid, and with a copy of customer proof of purchase. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located.

  • Page 5: Table Of Contents

    Replaceable Parts ........TCP202 Instruction Manual...
  • Page 6 Figure 28: Removing the Current Transformer ... . . Figure 29: TCP202 and Replaceable Accessories ... Figure 30: Replaceable Parts – Compensation Box .

  • Page 7: General Safety Summary

    These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property. TCP202 Instruction Manual...
  • Page 8 These symbols may appear on the product: DANGER Protective Ground ATTENTION Double High Voltage (Earth) Terminal Refer to Manual Insulated Certifications and Compliances Refer to the specifications section for a listing of certifications and compliances that apply to this product. TCP202 Instruction Manual...

  • Page 9: Getting Started

    Features and Accessories The TCP202 Current Probe (Figure 1) is a 50 MHz current probe for use with Tektronix oscilloscopes that have the TekProbe interface. The probe can measure up to 15 A (DC + peak AC).
  • Page 10 If your oscilloscope does not support the TekProbe interface, you can use the optional 1103 probe power supply as an effective interface. Contact your local Tektronix representative for more information. Degauss. The degauss button removes residual magnetism from the probe core that would otherwise cause measurement errors.

  • Page 11: Installation

    Getting Started Installation Install the TCP202 Current Probe as follows: 1. Set the input channel to a zero reference point. 2. Connect the output of the probe to the TekProbe interface of the oscilloscope or other measurement instrument. The measurement instrument input must have a ground reference.

  • Page 12: Compensating The Probe (Optional)

    If the probe fails the compensation routine, refer to the procedure for checking the DC accuracy of the probe on page 41 and the procedure for accessing the internal gain adjustment on page 32. Repeat this procedure whenever you move the current probe to another input. TCP202 Instruction Manual...

  • Page 13: Operating Basics

    15 A. The product of the peak current and pulse width (at 50% of peak) must be 500 Aseconds or less. For example, the maximum pulse width is 20 s for a pulse of 25 A peak. TCP202 Instruction Manual...

  • Page 14: Degaussing And Balancing The Probe

    TekProbe interface may overload and cause measurement or display errors. When one or two TCP202 current probes are used on a TDS Series oscilloscope, the ratings are as shown in Figure 19 on page 27. Degaussing and Balancing the Probe For accurate measurements, you must occasionally degauss and balance the probe.

  • Page 15: Measurement Procedures And Techniques

    4. Read the measurement. Adjust the display of the measurement instrument as necessary. 5. If necessary, adjust the oscilloscope offset control to offset a DC level. (AC coupling is automatically disabled on TDS oscillo- scopes when the probe is connected.) TCP202 Instruction Manual...

  • Page 16: Figure 4: Polarity Of Current Flow

    3. To adjust for a current null, adjust the current in one of the conductors until the displayed measurement is zero. TCP202 Instruction Manual...

  • Page 17: Figure 5: Measuring Differential Current And Nulls

    Operating Basics Conductor 2 Conductor 1 Current Current Current probe Figure 5: Measuring Differential Current and Nulls TCP202 Instruction Manual...
  • Page 18 For example, if the second conductor has a current of 100 mA DC and is wrapped around the probe five times, the DC bucking current is 100 mA multiplied by 5, or 500 mA DC. TCP202 Instruction Manual...

  • Page 19: Figure 6: Increasing The Dc Measurement Range

    Second conductor suppling bucking current Current probe (a) Adding a second conductor Current Current Conductor under test Extra turns added to increase bucking current Current probe (b) Adding multiple turns Figure 6: Increasing the DC Measurement Range TCP202 Instruction Manual...

  • Page 20: Figure 7: Increasing Probe Sensitivity

    For graphs of insertion impedance, refer to figures 15 and 17 on page 23. Conductor under test Extra turns for increased sensitivity Current probe Figure 7: Increasing Probe Sensitivity TCP202 Instruction Manual...

  • Page 21: Reference

    1. Connect the output of a differential voltage probe (such as the P5205) to one channel and the output of the TCP202 Current Probe to the other channel of the oscilloscope. NOTE. For high-frequency measurements, the time (propagation) delays of both probes should match.

  • Page 22: Inductance Measurements

    Figure 9, and is mathematically expressed by the following formula: where L is the inductance in henries, E is the voltage of the pulse generator, dt is the change in time, and di is the change in current. TCP202 Instruction Manual...

  • Page 23: Figure 8: Measuring Inductance With A Low-Impedance Source

    Figure 8: Measuring Inductance with a Low-Impedance Source NOTE. If the probe impedance is a significant part of the total circuit inductance, measurement accuracy will be affected. Refer to the probe specifications for probe insertion impedance. TCP202 Instruction Manual...

  • Page 24: Figure 9: Linear Current Versus Time Ramp

    Use this formula to calculate the inductance based on the current measurement: where L is the inductance in henries, is the time required for the current to rise or fall 63.2% of the total current value, and R is the source resistance of the pulse generator. TCP202 Instruction Manual...

  • Page 25: Figure 10: Measuring Inductance With A High-Impedance Source

    Reference Resistance (R) Current Pulse Flow (i) Inductance (L) generator Current probe Figure 10: Measuring Inductance with a High-Impedance Source Current flow (i) 100% 63.2% 36.8% Time (t) Figure 11: High-Impedance Source Current Ramp TCP202 Instruction Manual...

  • Page 26: Continuity Test Of Multiple-Conductor Cable

    The turns are calculated by using the formula: where N is the number of turns in the test coil, N is the number of turns in the reference coil, I is the measured coil current, and I the input current. TCP202 Instruction Manual...

  • Page 27: Figure 12: Measuring The Number Of Turns In A Coil

    Coil current from coil turns Figure 12: Measuring the Number of Turns in a Coil TCP202 Current probe Current flow in coil 1 Input current Current flow in coil 2 Figure 13: Turns Measurement Using Reference Coil...

  • Page 28: Specifications

    Specifications The specifications in Tables 1 through 4 apply to a TCP202 Current Probe installed on a Tektronix TDS 520B Oscilloscope. The tables also list the specifications for the calibrator (page 50) that can be used on some TDS oscilloscopes to increase the DC accuracy.
  • Page 29 IEC 1010-2-032 Particular requirements for hand-held current clamps for electrical measurement and test Certifications Underwriters Laboratories certified to Standard UL3111-1 for Electrical and Electronic Measuring and Testing Equipment, CAN/CSA-C22.2 No. 1010.1, and IEC 1010-2-032 TCP202 Instruction Manual...

  • Page 30: Typical Characteristics

    20 MHz (At higher bandwidths, the noise is a function of the oscilloscope front end noise) System Aberrations 10% p-p Insertion Impedance Phase angle: See figures 16 and 18 Magnitude: See figures 15 and 17 Time (Propagation) Delay 17 ns Amp-second Product 500 As (See Figure 19) TCP202 Instruction Manual...

  • Page 31: Figure 14: Frequency Derating

    Specifications 100k 100M Frequency (Hz) Figure 14: Frequency Derating 1000 100k 100M Frequency (Hz) Figure 15: Insertion Impedance – Magnitude – Single Conductor TCP202 Instruction Manual...

  • Page 32: Figure 16: Insertion Impedance - Phase Angle - Single Conductor

    Specifications 100k 100M Frequency (Hz) Figure 16: Insertion Impedance – Phase Angle – Single Conductor TCP202 Instruction Manual...

  • Page 33: Figure 17: Insertion Impedance - Magnitude - 10-Turn #24 Awg Primary

    Specifications 1000 0.01 100k 100M Frequency (Hz) Figure 17: Insertion Impedance – Magnitude – 10-Turn #24 AWG Primary TCP202 Instruction Manual...

  • Page 34: Figure 18: Insertion Impedance - Phase Angle - 10-Turn #24 Awg Primary

    Specifications 100k 100M Frequency (Hz) Figure 18: Insertion Impedance – Phase Angle – 10-Turn #24 AWG Primary TCP202 Instruction Manual...

  • Page 35: Nominal Characteristics

    3.8 mm ( 0.15 in) diameter Dimensions, Probe Head Length: 200 mm (7.76 in) Width: 16 mm (0.62 in) Height: 32 mm (1.25 in) Unit Weight (probe only) 0.19 kg (0.44 lbs) Cable Length 2.16 m (85 in) TCP202 Instruction Manual...
  • Page 36 Specifications Table 4: Nominal Characteristics (Cont.) Maximum Clamp-on Con- 7 AWG, bare conductor ductor Size Calibrator Turns TCP202 Instruction Manual...

  • Page 37: Maintenance

    Do not use a petroleum based lubricant on the plastic. If the plastic slide assembly requires lubrication, use a silicone based grease sparingly. Do not immerse the probe in liquids or use abrasive cleaners. TCP202 Instruction Manual...

  • Page 38: Servicing The Compensation Box

    If necessary, seat the pin into the connector by pressing the tip of the pin gently but firmly against a hard surface. Figure 20: Replacing TekProbe Interface Pins TCP202 Instruction Manual...

  • Page 39: Figure 21: Replacing The Tekprobe Collar

    See Figure 21. Align the tab to the slot and gently press the two pieces together. Once installed, the TekProbe collar should rotate freely to lock and unlock. Slot Figure 21: Replacing the TekProbe collar TCP202 Instruction Manual...

  • Page 40: Figure 22: Removing The Compensation Box Covers

    Figure 22: Removing the Compensation Box Covers Accessing the Gain Adjustment 1. Open the compensation box with the release tool. Remove the top cover. 2. Carefully lift the back edge of the circuit board to access the gain adjustment. Refer to Figure 23. TCP202 Instruction Manual...

  • Page 41: Figure 23: Accessing The Gain Adjustment

    To replace the covers, follow these steps: 1. Align the TekProbe interface and the strain relief notches with the tabs on the cover. Refer to Figure 24. 2. Press the catches of the cover in and lower the cover. TCP202 Instruction Manual...

  • Page 42: Probe Head Disassembly

    Probe Head Disassembly WARNING. Probe disassembly should only be performed by qualified service personnel. 1. Remove the two screws from the bottom of the probe and pull the strain relief boot back as shown in Figure 25. TCP202 Instruction Manual...

  • Page 43: Figure 25: Removing The Strain Relief Boot

    3. Hold the probe in a top-up horizontal position and slide the top half of the probe body off as shown in Figure 26. 4. Remove the metal ball. 5. Turn the probe upside down, push the slide back slightly, and remove the slide (see Figure 27). TCP202 Instruction Manual...

  • Page 44: Figure 26: Removing The Top Half Of The Probe

    (a) Pivot the back end (b) Slide the top forward off the end of the bottom half of the probe body Figure 26: Removing the Top Half of the Probe TCP202 Instruction Manual...

  • Page 45: Figure 27: Removing The Probe Slide

    Figure 28, and pull it out of the circuit board socket. The circuit board may be removed by lifting out the strain relief and the circuit board from the body half. TCP202 Instruction Manual...

  • Page 46: Obtaining Replacement Parts

    NOTE. Exercise care when fitting the slide back into the probe body; aligning the switch contacts can require patience. Obtaining Replacement Parts Replacement parts may be obtained through your local Tektronix field office or representative. Refer to Replaceable Parts on page 44 for more information.

  • Page 47: Preparation For Shipment

    Maintenance Preparation for Shipment If you must ship your Tektronix product, please use the original packaging if possible. If the original packaging is unfit for use or not available, use the following packaging guidelines: 1. Use a corrugated cardboard shipping carton having inside dimensions at least one inch greater than the probe dimensions.

  • Page 48: Performance Verification And Adjustment

    20-minute warm-up period Equipment Required The following procedure verifies the warranted electrical characteris- tics of the TCP202 Current Probe. Table 5 itemizes the equipment required, provides an example or part number of the equipment, and explains the purpose of the equipment.

  • Page 49: Dc Accuracy

    4. Clamp the jaw of the probe head around the current loop. 5. Check that the DC accuracy is 3% (4.85 to 5.15 divisions). 6. Disconnect the setup. TCP202 Instruction Manual...

  • Page 50: Bandwidth

    6. Check for 4.2 divisions peak to peak. 7. Disconnect the setup. Rise Time 1. Connect a 50 current loop to the 50 fast-rise output of the calibration generator. 2. Clamp the jaw of the current probe around the current loop. TCP202 Instruction Manual...

  • Page 51: Calibrator Accuracy (Optional)

    3. If the reading is not exact, insert a flat-blade adjustment tool into the hole in the left side of the calibrator and adjust the resistance to a value of 42.00 ohms. 4. Disconnect the setup. TCP202 Instruction Manual...

  • Page 52: Replaceable Parts

    Replaceable Parts This section contains a list of the replaceable modules for the TCP202 Current Probe. Use this list to identify and order replace- ment parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative.
  • Page 53 Abbreviations Abbreviations conform to American National Standard ANSI Y1.1–1972. Mfr. Code to Manufacturer Cross Index The table titled Manufacturers Cross Index shows codes, names, and addresses of manufacturers or vendors of components listed in the parts list. TCP202 Instruction Manual...

  • Page 54: Figure 29: Tcp202 And Replaceable Accessories

    Replaceable Parts Figure 29: TCP202 and Replaceable Accessories TCP202 Instruction Manual...
  • Page 55 TCP202 Replaceable Parts and Accessories Fig. & Tektronix Serial No. Serial No. Index Part Number Effective Discont’d Name & Description Mfr. Code Mfr. Part Number Number 29– PROBE, CURRENT: TCP202 –1 204–0288–03 BODY HALF,PROBE:UPPER 80009 204–0288–03 –2 214–0835–00 SPRING,HLCPS:0.127 OD X 2.65 L,SST...

  • Page 56: Figure 30: Replaceable Parts - Compensation Box

    NOTE: Parts illustrated with dashed lines are not replaceable Figure 30: Replaceable Parts – Compensation Box Replaceable Parts – Compensation Box Fig. & Tektronix Serial No. Serial No. Index Part Number Effective Discont’d Number Name & Description Mfr. Code Mfr. Part Number 30–1...
  • Page 57 Part Number Effective Discont’d Name & Description Mfr. Code Mfr. Part Number Number –4 334–9139–00 MARKER,IDENT:FRONT IDENTIFICATION 0KB05 334–9139–00 LABEL,TCP202 –5 348–1487–00 CUSHION:FOAM CUSHION,30 PPI POLY FILTER 80009 348–1487–00 FOAM,0.005 THK ACRYLIC ADHESIVE,1 SIDE,0.850 –6 206–0430–00 COMP BOX:COVER,BOTTOM HALF 80009 206–0430–00 –7...

  • Page 58: Figure 31: Tcp202 Optional Accessories

    Figure 31: TCP202 Optional Accessories Optional Accessories Fig. & Tektronix Serial No. Serial No. Index Part Number Effective Discont’d Name & Description Mfr. Code Mfr. Part Number Number 31–1 003–1383–00 RLSE TOOL,COVER:COMP BOX,POLYCARBONATE TK2565 003–1383–00 –2 015–0672–50 ADAPTER,CALIBRATOR: 50 TURN CURRENT LOOP, 80009 015–0672–50...
  • Page 59 51 NEWCOMB ST ATTLEBORO, MA 02703–1403 3M099 PORTLAND SCREW COMPANY 6520 N BASIN AVE PORTLAND, OR 97217 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON, OR 97077–0001 PO BOX 500 91260 CONNOR FORMED METAL PRODUCTS 1729 JUNCTION AVENUE SAN JOSE, CA 95112...
  • Page 60 Replaceable Parts TCP202 Instruction Manual...

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