To Check The Usb (Usbtmc) Interface Card; To Check The Handler Interface Function (Option 201 Only) - Agilent Technologies E4980A Service Manual

To Check the USB (USBTMC) Interface Card

Procedure
Connect the USB cable between the controller PC and the E4980A. Turn the controller PC
on. If the E4980A cannot detect the controller PC, the problem seems in the USB
(USBTMC) Interface of the PPMC PCA is suspected.

To Check the Handler Interface Function (Option 201 only)

Perform this test only when troubleshooting the Option 201 Handler Interface Board. This
test verifies the handler interface functions.
Equipment
Table 4-6 Equipment List of the Handler Interface Function Test (Option 201 only)
Handler Simulator
Procedure
Step 1. Disconnect the power cable from the E4980A and allow 1 minute for the internal
capacitors to discharge.
NOTE Dangerous energy/voltage exists when the E4980A is in operation, and for a time after it is
powered down. Allow 1 minutes for the internal capacitors to discharge.
Step 2. Remove the Handler Interface Board according to the procedure for describing in "Handler
Interface" Chapter of the User's Guide.
NOTE The interface board contains electronic components that can be damaged by static
electricity through electrostatic discharge (ESD). To prevent ESD damage, maintain
frequent contact with any bare sheet metal surface on the chassis. A grounding wrist strap
(or similar device) is useful for this purpose. Handle the board carefully at all times. Avoid
touching electronic components or circuit paths.
NOTE
Before performing Step 3, note the jumper and switch settings on the handler interface
board in order to return them to the same settings at the end of this function test.
Step 3. Set the jumpers and switch on the handler interface board to the same settings as when the
board is shipped from the factory. Refer to Figure 4-9, Table 4-7, and Table 4-8.
Chapter 4
Function Specific Troubleshooting
Agilent p/n 04278-65001
Troubleshooting
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