Service manual

Functional
Verification
Test
The Functional Verification Test for the Agilent E1346A Single Ended
Relay Multiplexer consists of sending the *IDN? command and checking
the response. This test can be used to verify that the multiplexer is
connected properly and is responding to a basic command.
Procedure 1. Verify that the multiplexer is properly installed in mainframe
2. Verify that the mainframe has passed its power-on test.
3. Send *IDN? to the multiplexer (see example following)
4. The return should be as follows (revision number may vary):
HEWLETT-PACKARD,SWITCHBOX,0,A.06.00
NOTE
If the primary address setting, secondary address setting, or the interface
select code is set incorrectly, the multiplexer will not respond. Verify proper
address selection before troubleshooting.
Example An example follows which uses an HP 9000 Series 300 computer with
BASIC and a multiplexer address of 70914.
10 DIM A$[100]
20 OUTPUT 70914;"*IDN?"
!Send the ID command
30 ENTER 70914;A$ !Get response
40 PRINT A$
50 END
Operation
Verification
Test
The procedures in this section are used to provide a high level of confidence
that the multiplexer is meeting published specifications.
The Operation Verification test is a subset of the Performance Verification
tests and is suitable for checkout after performing repairs.
The Operation Verification Test is performed by completing the Closed
Channel Resistance Test (Test 2-1) as described in the Performance
Verification test procedures. This test is usually sufficient to verify that the
multiplexer is meeting its specifications.
2-2 Verification Tests