NI 9475 Operating Instructions and Specifications
12
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overc
u
rrent condition occ
u
rs. A channel LED may be on even if the
channel is off beca
u
se of an overc
u
rrent condition. To determine if
the channel is in an overc
u
rrent state, meas
u
re the voltage between
DO and V
s
u
p
. If the voltage is eq
u
al to the voltage of the external
power s
u
pply connected to the mod
u
le, the channel is in an
overc
u
rrent state.
Resetting Channels After an Overcurrent Condition
After yo
u
have determined and fixed the ca
u
se of the overc
u
rrent
condition, reset the channel by t
u
rning it off. For more information
abo
u
t writing to o
u
tp
u
t channels, refer to the software help. Visit
ni.com/info
and enter
c
s
erie
s
doc
for information abo
u
t
C Series doc
u
mentation. Alternatively, yo
u
can disconnect the
external power s
u
pply from the mod
u
le. However, doing so
disconnects power from all of the mod
u
le channels. Normal
operation can res
u
me after yo
u
correct the overc
u
rrent condition
and reset the channel.
Sleep Mode
This mod
u
le s
u
pports a low-power sleep mode. S
u
pport for sleep
mode at the system level depends on the chassis that the mod
u
le is
pl
u
gged into. Refer to the chassis man
u
al for information abo
u
t
