User manual

Agilent E1460A
Performance
Verification
The procedures in this section are used to test the multiplexer’s electrical
performance using the specifications in Appendix A of the Agilent E1460A
User’s Manual as the performance standards. These tests are suitable for
incoming inspection, troubleshooting, and preventive maintenance.
Note
In the following procedures, ss represents the switch card number (01-99)
of the multiplexer. A leading zero may be omitted.
Test 2-1: Closed-channel Resistance Test
The purpose of this test is to verify that all channel relay contacts meet the
closed-channel resistance specification for the multiplexer. If the
closed-channel resistance of any contact is greater than 3.5
Ω, the relay
should be replaced.
High Lines Test 1. Hardware Connections
2. Equipment Setup
• Set DMM to: 4-wire ohms, autorange.
• Send *RST to the multiplexer.
• Send FUNC ss, WIRE2 to the multiplexer to set it to two-wire
mode.
• Send CLOS (@ss0995) to the multiplexer to connect the lower and
upper Common buses together.
Figure 2-2. Closed-channel Resistance (High Lines)
Agilent E1460A Service Manual Verification Tests 21