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National Instruments Corporation
19
SCC Quick Start Guide
Step 6. Install the Modules
When properly oriented, SCC modules plug easily onto the connector
block socket. Never force an SCC module onto the socket.
To install the SCC modules on the connector block sockets of the
SC-2345/2350 carrier, complete the following steps:
1.
Remove the cover screws on either side of the top cover with a
Number 1 Phillips screwdriver. Open or remove the top cover.
2.
If your carrier is equipped with a strain relief module, loosen the
strain-relief screws with a Number 2 Phillips screwdriver and slide the
signal wires through the strain-relief opening. If you are connecting
multiple signals, you may need to remove the top strain-relief bar.
3.
Plug the SCC modules onto the appropriate connector block sockets.
Refer to the
Device-Specific Information
section of the SCC-
XX
module user guides for the socket requirements of the SCC modules.
Analog Input SCC Modules
Analog input sockets are arranged in aligned pairs so that sockets J(
X
+
1)
and J(
X
+
9) form a pair, for all
X
0 to 7. The SC-2345 routes analog input
signals to the DAQ device channels AI (
X
) and AI (
X
+
8). For example, if
you plug an SCC-A10 voltage attenuator module into socket J4, the signal
on one channel is routed to AI 3 and the signal on the other channel is
routed to AI 11. Refer to
ni.com/info
and enter
rdtntg
in the info code
field to confirm signal names in the
NI-DAQ C to NI-DAQmx Terminal
Names Translation Guide.
Single-Stage Analog Input Conditioning
For single-stage analog input conditioning, plug the SCC module into any
socket J1 to J8 and connect the I/O signals to it. In a single-stage analog
input SCC configuration, you connect your external signal to an SCC
module that conditions the signal and passes it to the DAQ device.
Dual-Stage Analog Input Conditioning
For dual-stage analog input conditioning, plug the first-stage SCC module
into any socket J(
X
+
9) and plug the second-stage SCC module into the
corresponding paired socket, J(
X
+
1). Connect the input signals to the
first-stage SCC module, and none to the second-stage SCC. The SC-2345
connects the output signals of the first-stage SCC modules to the inputs of
the second-stage SCC modules and routes the outputs of the second-stage
modules to DAQ device channels AI (
X
) and AI (
X
+
8). An example of
dual-stage conditioning is a voltage attenuator SCC module followed by a
