Agilent Technologies 34970A Service Manual page 94

Chapter 4 Calibration Procedures
Relay Verification
Open all channels on the module by performing a Factory Reset.
Tests 9 - 10:
Configure Channel 10 (module in slot 200) as follows: 4-wire ohms,
1 kΩ range, and 5
Enable reading monitoring by pressing
(or use the ROUTe:MON command). Record the 4-wire ohms
measurements from the external DMM in the following table.
External DMM Ohmmeter Connections
Test Channel
HI
# Configured
9 Ch 10 P2
10 Subtract (Test 9 – Test 3)
Open all channels on the module by performing a Factory Reset.
Tests 11- 33:
For each test, close only the channel shown in the "Channel Closed"
column below (module in slot 200). Turn the Monitor Mode "off" and
select "Banks Joined" from the Advanced menu. Record the 4-wire
ohms measurements from the external DMM in the following table.
External DMM Ohmmeter Connections
Test Channel
HI
# Closed*
11 Ch 1 P2
12 Ch 2 P2
13 Ch 3 P2
14 Ch 4 P2
15 Ch 5 P2
16 Ch 6 P2
17 Ch 7 P2
* Only the channel currently under test should be closed at one time. All other channels should be open.
92
1 ⁄ digits.
2
HI LO
LO
Sense Sense
P2 P3 P3
HI LO
LO
Sense Sense
P2 P1 P1
P2 P1 P1
P2 P1 P1
P2 P1 P1
P2 P1 P1
P2 P1 P1
P2 P1 P1
on the selected channel
Test
Measured Value
Limit
__________ Ohms —
__________ Ohms 2.00Ω
Test
Measured Value
Limit
__________ Ohms
2.00Ω
__________ Ohms 2.00Ω
__________ Ohms
2.00Ω
__________ Ohms
2.00Ω
__________ Ohms
2.00Ω
__________ Ohms
2.00Ω
__________ Ohms 2.00Ω
Continued on next page...
Relay
Measured
—
K423
Relay
Measured
K401
K402
K403
K404
K405
K406
K407