Chapter 2 Installation and Configuration
© National Instruments Corporation 2-5 SC-2043-SG User Manual
Local Excitation Sense Selection
MIO or MIO E Series Boards
If you are using the SC-2043-SG with an MIO or MIO E Series board, you can locally sense the
exact level of the excitation voltage by routing the excitation voltage (internal or external) to one
of two analog channels, selected by jumpers W8 and W2. Table 2-4 shows these jumper
settings.
Setting jumper W8 to the EX position (the factory setting) routes the excitation voltage to ACH8
so you can use ACH<0..7> for conditioned strain gauge signal inputs. Setting jumper W8 to the
ST position routes an external signal (from the screw terminal labeled 4 in the MIO column, or
ACH8 if you are using the stick-on labels) to ACH8.
Setting jumper W2 to the EX position routes the excitation voltage to ACH0, leaving you
ACH<1..7> for conditioned strain gauge signal inputs. Setting jumper W2 to the CH0 position
(the factory setting) routes the conditioned strain gauge bridge signal (that entered via the CH0±
screw terminals) to ACH0.
Table 2-4. Local Excitation Sense Jumper Settings for MIO and MIO E Series Boards
Jumper Description Configuration
W2
CH0 position—Place the jumper in
this position to route the conditioned
strain gauge bridge signal (that
entered via the CH0± screw
terminals) to ACH0. (factory setting)
EX position—Place the jumper in
this position to route the excitation
source voltage to ACH0.
W2
EX
CH0
W2
EX
CH0
W8
EX position—Place the jumper in
this position to route the excitation
source voltage to ACH8. (factory
setting)
ST position—Place the jumper in this
position to route an external input
signal to ACH8.
W8
EX ST
W8
EX ST