Fluke 2680A User Manual page 50

2680A/2686A
Users Manual
Use H and L Terminals for any channel.
• Channels 1 through 20 on rear panel input module (Channel 8 shown here).
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 number +10 (11 through 20) are used.
2-14
2-WIRE (2T) CONNECTION
11 12 13
SOURCE
H L H L H L
(4-WIRE)
SENSE
H L H L H L
(4-WIRE)
1 2 3
4-WIRE (4T) CONNECTION
11 12 13
SOURCE H L H L H L
(4-WIRE)
SENSE
H L H L H L
(4-WIRE)
1 2 3
Figure 2-6. 2-Wire and 4-Wire Connections
14 15 16 17 18 19
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 5 6 7 8 9
14 15 16 17 18 19
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 5 6 7 8 9
20
H L
H L
10
20
H L
H L
10
Resistance
or
RTD Source
alg59f.eps