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Agilent Technologies 1141A, 1142A Agilent Technologies 1141A Differential Probe and 1142A Probe Control and Power Module

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Agilent Technologies 1141A Differential Probe and 1142A Probe Control and Power Module

This manual contains information for use and service of the differential

probe system, the 1141A Differential Probe and 1142A Probe Control

and Power Module. In this document, the two models will be treated as

a system.

Each of the two instrument models that make up the differential probe

system has a serial number sticker. The sticker for the 1141A

Differential Probe is inside the probe, in the bottom cover. (See

chapter 3 for disassembly procedure.)

The 1141A/1142A probe system allows measurement of small

differential signals in the presence of much larger common-mode

signals. It has the following major features:

• 200 MHz bandwidth

• Variable offset

• dc reject

• ac coupling

• Remote operating capability

The variable offset capability can be used to measure small ac signals in

the presence of much larger dc levels. Remote operation of key

features allows the use of the probe system in automatic test situations.

The probe can be used with an oscilloscope, spectrum analyzer, or any

instrument where differential probing is required and a compatible

50 Ω input is available.

Contents

Main Agilent Technologies 1141A Differential Probe and 1142A Probe Control and Power Module Page Contents Page Introduction Accessories Supplied Page Accessories Available The following accessories can be ordered. To inspect the probe To inspect the probe Using the probe with other instruments Recommended Test Equipment Setting up the probe Initial Adjustment Page Using the Accessories Page Page Page Page Grounding Coupling Functions Page Page Remote operation Cleaning Requirements Differential Amplifiers and CMRR Page Page Equipment Required Introduction Equipment Required The Test Board The Test Board Calibration Tests dc Gain Accuracy dc Gain Accuracy Page Page Vout Vin --------------Vout1Vout2 ----------------------------------= () 2 Vin Page Page Bandwidth Page CMRR Test Page Page Calibration Test Record Probe Adjustment Adjustments Probe Adjustment Page Adjustment Procedure Page Page Page Page Page Adjustment Procedure Attenuator Adapter Adjustment Attenuator Adapter Adjustment Page Page Page Page Introduction Performance Specifications and Characteristics Performance Specifications and Characteristics Page Page General Characteristics General Characteristics Theory of Operation Theory of Operation Differential Probe Control and Power Module Theory of Operation Attenuator Adapters Page Service Policy Troubleshooting Probe Troubleshooting Probe Control and Power Module Troubleshooting Page Removing and Replacing Assemblies Differential Probe Page Probe Adapters Page Probe Control and Power Module Replaceable Parts Parts List Ordering Information Direct Mail Order System Manufacturers Codes Page Page Page Page Page Page 1141A and 1142A Replaceable Parts Page Page Page Page Page Locator Table for Control and Power Supply Page Page Index Agilent Technologies P.O. Box 2197 1900 Garden of the Gods Road Notices Manual Part Number Warranty Technology Licenses Restricted Rights Legend Product Safety Notices Warnings To clean the instrument Safety Symbols !