Agilent Technologies 1141A, 1142A - page 67

67

Service

Removing and Replacing Assemblies

Reassemble Probe

The ground screw passes through the top cover and PC board and screws into the ground

block.

1If replacing the PC board, remove the input connectors from the old board and

put them on the new one.

2If replacing the cable, note the orientation of the probe clamp ring on the old

cable, remove the ring and put it on the new cable.

3Connect the cable connector to the PC board.

4Solder the two connections of the coaxial cable to the PC board.

On a new probe cable, the conductors of the coaxial cable are connected by a heavy

single wire. Cut the heavy wire so it matches the wire on the cable that was removed.

5Assemble the PC assembly into the top cover.

The large hybrid is exposed when the assembly is in the top cover. The figure on the

below shows the sequence of the ground screw, top cover, PC board, and ground block.

Figure 3-8

Reassembling the Probe

aInsert the input connectors first, and seat the cable end of the PC assembly over the

pins at the rear of the cover.

bPosition the ground block at the front of the PC assembly.

cInsert the grounding screw through the top cover and screw it into the ground block

as shown in the figure above.

6Replace the bottom cover.

aPosition the cable strain relief and with one hand, hold the cable and top cover

together.

The flange on the strain relief has a notch that fits over a protrusion in the top cover.

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 !