2680A/2686A
Users Manual
2-14
12
11
13
14
15
16
17
18
19
20
2
1
3
4
5
6
7
8
9
10
SOURCE
(4-WIRE)
SENSE
(4-WIRE)
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
2-WIRE (2T) CONNECTION
Resistance
or
RTD Source
Use H and L Terminals for any channel.
• Channels 1 through 20 on rear panel input module (Channel 8 shown here).
12
11
13
14
15
16
17
18
19
20
2
1
3
4
5
6
7
8
9
10
SOURCE
(4-WIRE)
SENSE
(4-WIRE)
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
H L
4-WIRE (4T) CONNECTION
Use H and L Terminals for two channels on rear panel input module. Connections for Channel 8 are
shown here with Channel 18 providing the additional two connections.
For each 4-wire connection, one Sense Channel (1 through 10) and one Source Channel (Sense
Channel 10 (11 through 20) are used.
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Figure 2-6. 2-Wire and 4-Wire Connections
Summary of Contents for 2680A
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