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Installation and Configuration Chapter 2
SC-2043-SG User Manual 2-4 © National Instruments Corporation
Onboard/External Excitation Selection
If you want to use the onboard voltage excitation source to excite your strain gauge bridges, set
both jumpers W1 and W3 to the INT position. If you want to use an external excitation source,
set both jumpers W1 and W3 to the EXT position and connect your excitation source to
connector J7.
Table 2-3. Onboard/External Excitation Jumpers
Jumpers Description Configuration
W3
W1
J7
INT position—Place jumpers W1
and W3 in this position to provide
excitation voltage from the onboard
excitation source. (factory setting)
W1, W3
EXT
INT
EXT position—Place jumpers W1
and W3 in this position to provide
excitation voltage from an external
excitation source connected to
connector J7.
W1, W3
EXT
INT