©
National Instruments Corp.
7
NI 9237 Operating Instructions and Specifications
When yo
u
connect a half bridge to the NI 9237, yo
u
m
u
st connect
the AI+, EX–, and RS– signals, b
u
t yo
u
do not connect the AI–
signal. When yo
u
connect a f
u
ll bridge, yo
u
m
u
st connect the AI+,
AI–, EX–, and RS– signals. Refer to Fig
u
re 2 for an ill
u
stration of
how to connect half and f
u
ll bridges to the NI 9237.
Note
Yo
u
can
u
se a q
u
arter bridge with the NI 9237 if
yo
u
add a resistor externally to create a half bridge. Yo
u
also can
u
se a q
u
arter bridge with the NI 9237 if yo
u
u
se
the NI 9944 or NI 9945 Q
u
arter Bridge Completion
Accessory. Visit
ni.com
and search for the NI 9944 and
NI 9945 Q
u
arter Bridge Completion Accessories for
more information abo
u
t these accessories and how to
p
u
rchase them.
Note
National Instr
u
ments does not recommend
u
sing
an RJ-45 cable with the NI 9237 beca
u
se it can physically
damage pins 1 and 10 on the device, and th
u
s
permanently disable sh
u
nt calibration no matter what
connector yo
u
u
se.
