4-8
Service Information
WARNING
The following steps use a 60V. Be sure to remove power from the circuit
before making connection changes.
7.
Place the electrometer in the R measurement function.
8.
Turn on the multimeter power.
9.
Program the multimeter to close channel 1.
10.
On the electrometer, source 60V.
11.
After allowing the reading on the electrometer to settle, verify that the reading is
>100M
Ω
(10
8
Ω
). This measurement represents the isolation resistance between channel
1 HI and LO.
12.
Turn off the electrometer voltage source.
13.
Repeat steps 9 through 12 for channels 2 through 20. Be sure the channel under test is
closed.
14.
Turn off the multimeter power.
15.
With the Model 6517A Electrometer voltage source off, connect the electrometer to
channel 1 HI and channel 2 HI as shown in
.
Figure 4-4
Connections for channel-to-channel isolation tests
16.
Turn on the Model 2000-20 Multimeter power.
17.
Program the multimeter to close channel 1.
18.
On the electrometer, source 60V.
19.
After allowing the reading on the electrometer to settle, verify that the reading is
>100M
Ω
(10
8
Ω
). This measurement represents the isolation resistance between channel
1 HI and channel 2 HI.
20.
Turn off the electrometer voltage source.
HI
LO
Channel 1
HI
LO
Channel 2-9
Channel 10
HI
LO
Channel 11
HI
LO
Channel 12-19
Channel 20
HI
LO OUT A
OUT B
HI
2-Pole
4-Pole
HI
Model 6517A
V-Source HI
(Red)
Banana to
Banana
Cable
Com
(Ground Link
Removed)
V-Source LO
Model 6171
Triax Adapter
Model 7025
Unterminated
Triax Cable
Source V and
Measure V/I
LO
Unterminated to
Banana Cable
Model 2000-SCAN-20
Summary of Contents for 2000-SCAN-20
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Page 12: ...1 General Information General Information ...
Page 17: ...1 6 General Information ...
Page 18: ...2 CardConnections andInstallation CardConnec tionsand Installation ...
Page 35: ...2 18 Card Connections and Installation ...
Page 36: ...3 Operation Operation ...
Page 51: ...3 16 Operation ...
Page 52: ...4 Service Information Service Information ...
Page 63: ...4 12 Service Information ...
Page 64: ...5 Replaceable Parts Replace ableParts ...
Page 67: ...5 4 Replaceable Parts ...
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Page 74: ...A Specifications Section A Specs 7 8 03 4 32 PM Page 1 ...
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