Chapter 2 Configuration, Installation, and Signal Connection
BNC-2090 User Manual
2-6
National Instruments Corporation
factory-default settings. Refer to Chapter 3,
Signal Conditioning
Application Examples
, for more information.
Installing Your BNC-2090
Perform the following steps to connect your BNC-2090 to your DAQ
system. Consult your computer user manual or technical reference
manual for specific instructions and warnings.
1.
Determine what signal conditioning you need for analog inputs and
install the necessary components into the open component
positions. Refer to
Analog Input
, in Chapter 3,
Signal Conditioning
Application Examples
, for more information.
2.
Make sure that jumper W1 and switches SW1–SW9 are set
correctly for your current application.
3.
Select the power source for the BNC-2090 by sliding the power
switch, located on the rear panel of the BNC-2090, to select the
DAQ board you are using (MIO or PC-LPM-16).
4.
(Optional) You can mount the BNC-2090 into a 19 in. rack or place
the accessory on a workbench near the host computer. If you do not
rack-mount the accessory, you can use the four adhesive rubber feet
included in the BNC-2090 kit to keep the accessory stationary on
your workbench.
5.
Connect the BNC-2090 to the DAQ board. Refer to Table 2-2 to
make sure you have the appropriate cable for your pin connector.
6.
Connect your field signals to the BNC-2090 at the BNC connectors
or spring terminals. Refer to
Connecting Analog Inputs
or
Connecting Digital I/O Signals
for more detailed information.
7.
Turn on the computer. If the green power LED, located on the front
panel of the BNC-2090 to the right of the spring terminal blocks,
does not light when you power on the DAQ board, turn off the
power for the BNC-2090 and make sure the power switch is in the
correct position for the board you are using.
8.
When you have finished using your BNC-2090, be sure you turn off
any powered external signals to the BNC-2090
before
you turn off
your computer.
Warning:
The BNC-2090 is not designed for any input voltages greater than 42 V,
even if a user-installed voltage divider reduces the voltage to within the
input range of the DAQ board. Input voltages greater than 42 V can
damage the BNC-2090, any and all boards connected to it, and the host
