Agilent Technologies 1141A, 1142A - page 50

50

Calibration Tests and Adjustment

Attenuator Adapter Adjustment

Adjustment Procedure

NOTE The attenuator must be adjusted when installed on the 1141A probe with which it will

be used. The specifications and characteristics will not be met if the attenuator adapter

is adjusted with one differential probe then used with another.

1Remove the probe pins from the attenuator adapter and differential probe, then

attach the adapter to the probe.

2Set the 1142A front panel switches to Local and Zero offset.

3Use the 9-inch BNC cable to connect the function generator to the test board.

The short cable minimized ground-loop voltages.

4Set up the function generator.

• Square wave

• 3.5 kHz

• 3.0 Vp-p for 10x adapter and 16 Vp-p for a 100x adapter.

5Use the long BNC cable to connect the Trig Out of the function generator to

the EXT TRIG of the oscilloscope.

6Set up the oscilloscope, then set the following parameters.

Menu Selection Setting

TIMEBASE (time/div) 50 µs/div

CHAN 1 (sensitivity)

(input R)

50 mV/div

50 Ω DC

TRIG (mode)

source

level

trg’d

EXT

1.00000 V

ACQUISITION Sampling Mode

Memory Depth

Sample Rate

Averaging

# of avg

Real Time

Automatic

Automatic

Enabled

32

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 !