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Instruction Manual
P6131
10X Passive Probe
for 2400 Series Oscilloscopes
070-5514-03
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com
070551403
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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. Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077-1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
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WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one (1) year from the date of purchase from an authorized Tektronix distributor. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Batteries are excluded from this
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Contacting Tektronix Product For questions about using Tektronix measurement products, call support toll free in North America: 1-800-833–9200 6:00 a.m. – 5:00 p.m. Pacific time Or contact us by e-mail: tm_app_supp@tek.com For product support outside of North America, contact your local Tektronix distributor or sales office. Service Tektronix offers extended warranty and calibration programs as options on many support products. Contact your local Tektronix distributor or sales office. For a lis
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General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. To Avoid Fire or Connect and Disconnect Properly. Do not connect or disconnect probes or test leads while they are connected to a voltage source. Personal Injury Observe All Terminal Ratings. To avoid fire or shock hazard, obser
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Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service or adjustments to this product unless another person capable of rendering first aid and resuscitation is present. ii P6131 Instruction Manual
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Operating Basics The P6131 probe is a subminiature, 10X, passive probe designed specifically for use with Tektronix 2400 Series oscilloscopes. It is fully compatible with the Tektronix family of subminiature probe accessories. The P6131 is available with 1.3 and 2 meter cable. WARNING. To avoid electric shock when using the probe, do not touch the metallic portions of the probe head while connected to a voltage source. Lead Inductance Inductance introduced by long leads can form resonant circuit
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Operating Basics Grounding the Probe Connect the probe to the instrument and connect the ground lead to ground before making any measurement. Ensure that no part of the ground lead contacts voltage in the circuit under test. Except for the probe tip and BNC center conductor, all accessible metal (including the ground clip) is connected to the BNC shell. WARNING. To avoid electric shock when using the probe, keep your fingers behind the finger guard on the probe body. See Figure 1 below. Hand con
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Specifications The characteristics listed in Table 1 apply to P6131 probes installed on Tektronix 2445 and 2465 oscilloscopes or 7A42 plug-ins, unless otherwise noted. Specifications apply when the instruments warm up for a period of at least 20 minutes in an environment that does not exceed the limits described in Table 2 on page 5. 1 Table 1: Electrical characteristics Characteristic Description 2 Attenuation 10X: ±1% at DC 2,3 Input resistance 10 M ±1% at DC 3 Input capacitance 1.3 m 10.8 p
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Specifications @25% Duty Factor =(1/2 Peak V) RMS 0V @50% Duty Factor =(1.414 (Peak V)) RMS 0V Special case of square wave: @20% Duty Factor 2 1/2 =[(V ) (Duty Factor)] Peak 0V Example: Maximum Input Voltage 2 1/2 =[(650 V Pk) (.20)] = 290 V RMS Figure 2: Maximum input voltage calculation example 10M 1M 100K R and X ( ) P P 10K 1M 100 0.01 0.1 1 10 100 1000 Frequency (MHz) Figure 3: Typical P6131 X and R versus frequency p p 4 P6131 Instruction Manual
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Specifications 500 Voltage (RMS) 100 10 1 10 100 Frequency (MHz) Figure 4: Typical P6131 voltage derating versus frequency Table 2: Environmental characteristics Characteristic Description Temperature range Operating –15 C to 65 C (+5 F to 149 F) Nonoperating –62 C to 85 C (–80 F to 185 F) Humidity Five cycles (120 hr) at 95% to 97% relative humidity, per Tektronix standard 062-2847-00, Class 3. Refer to MIL-E016400F, paragraph 4.5.9 through 4.5.9.5.1, class 4. Altitude < 2000 meters Ta
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Specifications Table 4: Certifications and compliances EC Declaration of Compliance was demonstrated to the following specification as listed in Conformity the Official Journal of the European Communities: Low Voltage Directive 73/23/EEC as amended by 93/68/EEC: EN 61010-1/A2 Safety requirements for electrical equipment for measurement, control, and laboratory use EN 61010-2-031:1994 Particular requirements for hand-held probe assemblies for electrical measurement and test Overvoltage Category:
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Service Information WARNING. The following instructions are for use by qualified service personnel only. To avoid electrical shock, do not disassemble or maintain the probe while it is connected to a signal source other than those specified in this procedure. This section contains detailed performance checks, adjustments, and mainte- nance procedures. These procedures use external traceable test equipment to directly check warranted characteristics. If you substitute equipment, always choose ins
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Service Information Table 5: Performance verification and adjustment test equipment (cont.) Description Minimum requirements Example product Termination 50 BNC Tektronix 011-0049-XX Low-reactance alignment tool 2 inch shaft, .050 inch bit size Tektronix 003-0675-XX 2 To confirm the full bandwidth specification of the P6131 probe, use the following equipment: a Tektronix 2465 oscillo- scope or 7904 oscilloscope with 7B92A time base and 7A42 vertical amplifier and a leveled sine wave generator c
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Service Information 4. Adjust the sine wave generator output amplitude to produce a 6-division display on the test oscilloscope. Center the waveform on screen. 5. Set the sine wave generator to the high-frequency range and slowly increase the variable frequency control until the display amplitude decreases to 4.2 divisions (–3 dB) on the oscilloscope. 6. Verify that the sine wave generator frequency readout is greater than or equal to the values listed in Table 6 for your instrument. Table 6: Pr
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Service Information 6. Remove the coax cable from the test setup. Connect the P6131 probe output to the same vertical input on the oscilloscope. 7. Connect the probe tip through the probe-tip-to-BNC adapter to the standard amplitude output of the calibration generator. (You must remove the light gray probe-body shell before inserting the probe tip into the probe-tip-to- BNC adapter.) 8. Set the calibration generator output amplitude to 0.5 V and fine tune the amplitude to produce a precise 5-div
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Service Information Low-Frequency To adjust the probe low-frequency compensation do the following: Compensation 1. Connect the probe output to the test oscilloscope vertical input. Adjustment 2. Set the oscilloscope controls as follows: Volts /Division 0.1 V (includes 10X probe attenuation) Time/Division 1 ms Input Coupling DC Bandwidth Full 3. Connect the probe input with hook tip to the oscilloscope calibrator output. 4. Set the oscilloscope triggering for a stable display. The square wave sho
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Service Information Over compensated Correct Under compensated Figure 7: Low-frequency compensation, optimizing the waveform High-Frequency To adjust the probe high-frequency compensation do the following: Compensation 1. Connect the positive-going fast-rise output of the calibration generator to the Adjustment test oscilloscope with the precision coax cable and 10X attenuator. 2. Set the oscilloscope controls as follows: Volts /Division 10 mV (includes 10X probe attenuation) Time/Division 0.02
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Service Information 8. Connect the probe output to the oscilloscope vertical input. 9. Connect the probe tip through the probe-tip-to-BNC adapter and a 50 termination to the positive-going fast-rise output of the calibration generator. (The light gray probe-body shell must be removed before inserting the probe tip into the probe-tip-to-BNC adapter.) 10. Verify that the high-frequency aberrations do not exceed +6% (5.30 divisions), –6% (4.70 divisions), or 9% (0.45% division) peak to peak, in a
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Service Information R2010 C1010 R2021 R2020 Metal-shell version R2010 R2020 R2021 C1010 C2010 Plastic-shell version Figure 8: High-frequency compensation adjustment locations ≈20 ns R2021 ≈5 ns R2021 ≈3 ns R2021 C1010 Figure 9: High-frequency compensation, optimizing the waveform 14 P6131 Instruction Manual
