Service manual

re-wire each time the tests are performed. The Agilent E1351A terminal

block and case assembly part number is E1351-80001.

Test 2-1: Closed

Channel

Resistance Test

This test first verifies that no FET switches are stuck in the on condition and

then verifies that all channels meet the closed channel resistance

specification for the FET Multiplexer. The channel HI, channel LO, A Tree,

and B Tree switches are all independently tested.

HI Channel

Measurements

1. Make Hardware Connections

• Turn mainframe power OFF

• Connect DMM as shown in Figure 2-2

• Turn mainframe power ON

2. Check for Stuck Channels

• Send *RST to the FET Multiplexer to open all channels

• Trigger the DMM with TRIG SGL and note reading

• Verify the reading is greater than 10 kΩ

3. Check HI Closed Channel Resistance

• Send CLOS (@nn00) to close channel 00, where nn is the card

number (typically 01)

• Trigger the DMM with TRIG SGL and note the reading

• Enter the result in Table 2-1 for channel 00 HI

• Send OPEN (@nn00) to open channel 00, where nn is the card

number

4. Repeat for Channels 01 through 15

Agilent E1300B/E1301B

Figure 2-2. HI Channel Resistance Test Connections

2-4 Verification Tests