Agilent Technologies 34970A, Service Manual, Page: 94 / 273

Tests 9 - 10:
Open all channels on the module by performing a Factory Reset.
Configure Channel 10 (module in slot 200) as follows: 4-wire ohms,
1 k
Ω
range, and 5 1 ⁄
2
digits.
Enable reading monitoring by pressing on the selected channel
(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
Configured
HI LO
HI
Sense
LO
Sense
Measured Value
Test
Limit
Relay
Measured
9 Ch 10 P2 P2 P3 P3 __________ Ohms — —
10 Subtract (Test 9 – Test 3) __________ Ohms
2.00 Ω
K423
Tests 11- 33:
Open all channels on the module by performing a Factory Reset.
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
Closed*
HI
LO
HI
Sense
LO
Sense
Measured Value
Test
Limit
Relay
Measured
11 Ch 1 P2 P2 P1 P1 __________ Ohms
2.00 Ω
K401
12 Ch 2 P2 P2 P1 P1 __________ Ohms
2.00
Ω K402
13 Ch 3 P2 P2 P1 P1 __________ Ohms 2.00 Ω K403
14 Ch 4 P2 P2 P1 P1 __________ Ohms
2.00
Ω K404
15 Ch 5 P2 P2 P1 P1 __________ Ohms
2.00 Ω
K405
16 Ch 6 P2 P2 P1 P1 __________ Ohms
2.00
Ω K406
17 Ch 7 P2 P2 P1 P1 __________ Ohms
2.00 Ω
K407
* Only the channel currently under test should be closed at one time. All other channels should be open.
Continued on next page...
Chapter 4 Calibration Procedures
Relay Verification
92