Tektronix P6131 User Manual

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

*P070551403*

070551403

Copyright © T ektronix, Inc. All rights reserved.
T ektronix 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.
T ektronix, Inc., P.O. Box 500, Beaverton, OR 97077-1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.

WARRANTY

T ektronix 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 T ektronix distributor. If any such product proves
defective during this warranty period, T ektronix, 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
warranty .

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by T ektronix, shipping charges prepaid, and
with a copy of customer proof of purchase. T ektronix shall pay for the return of the product to Customer if the shipment is
to a location within the country in which the T ektronix service center is located. Customer shall be responsible for paying
all shipping charges, duties, taxes, and any other charges for products returned to 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. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than T ektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-T ektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE LISTED PRODUCTS IN LIEU OF
ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUST OMER FOR BREACH OF THIS WARRANTY. TEKTRONIX
AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT , SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

Contacting Tektronix

Product
support

Service
support

For other
information

To write us

Web site

For questions about using T ektronix measurement products, call
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:
[e-mail]

For product support outside of North America, contact your local T ektronix distributor
or sales office.

T ektronix offers extended warranty and calibration programs as options on many
products. Contact your local T ektronix distributor or sales office.

For a listing of worldwide service centers, visit our web site.
In North America:

1-800–833–9200
An operator can direct your call.

T ektronix, Inc.
P.O. Box 500
Beaverton, OR 97077-1000
USA

www .tektronix.com

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 Personal Injury

Symbols and Terms

Connect and Disconnect Properly . Do not connect or disconnect probes or test

leads while they are connected to a voltage source.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings

and markings on the product. Consult the product manual for further ratings
information before making connections to the product.

The common terminal is at ground potential. Do not connect the common
terminal to elevated voltages.

Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.

Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry .

T erms in this Manual. The following terms may appear in this manual:

P6131 Instruction Manual

WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.

i

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

Operating Basics

Lead Inductance

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.

Inductance introduced by long leads can form resonant circuits that ring and
distort the true waveform if driven by signals containing significant frequency
components at or above resonance. To maintain optimum waveform fidelity,
keep the ground lead and signal input connection as short as possible.

Probe Compensation

Due to variations in oscilloscope input characteristics, probe low-frequency
compensation should be checked and or adjusted if you move the probe from one
oscilloscope input to another. Connect the probe tip to a 1 kHz square wave
signal (such as the oscilloscope calibrator output) and use a nonconductive
low-reactance alignment tool to adjust the compensation capacitor.

High-frequency compensation seldom requires adjustment. However, if the probe
has excessive high-frequency aberrations or insufficient bandwidth, you can
adjust the high-frequency compensation through holes in the compensation box
inner metal shield.

For complete low-frequency and high-frequency compensation adjustment
procedures, see page 10.

P6131 Instruction Manual

1

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 contact area

Finger guard

Figure 1: Probe finger guard and hand contact area

2

P6131 Instruction Manual

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.

T able 1: Electrical characteristics

Characteristic Description

Attenuation
Input resistance
Input capacitance

Compensation range 14 pF to 18 pF
Signal delay

2

2,3

3

1.3 m 10.8 pF
2 m 13.5 pF

1

10X: ±1% at DC
10 MW ±1% at DC

1.3 m 6.3 ns ±100 ps
2 m 9.0 ns ±200 ps

System bandwidth (–3 dB) On a 2465 or 7A42: On a 2445:

1.3 m ≥300 MHz ≥150 MHz
2 m ≥250 MHz ≥150 MHz

Maximum Input Voltage

1

Probe installed on Tektronix 150 MHz (or less) 2400 Series oscilloscope.

2

System characteristic.

3

Also see Figure 3.

4

As defined in EN61010-1. See Certifications and compliances in Table 4

5

RMS=Root Mean Square=rms=The square root of the average of the sum of the
squares of the instantaneous voltage in one cycle = .

300 VDC=300V RMS, 420 V Peak (sinewave)=300 V RMS See Figure 2

4,5

300 V RMS CAT I or 300 V DC CAT I
150 V RMS CAT II or 150 V DC CAT II
100 V RMS CAT III or 100 V DC CAT III
425 V peak, @50% DF, <1 sec PW
750 V peak, @10% DF, <50 ms PW
See Figure 4 for voltage derating curve.

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P6131 Instruction Manual

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