Figure 4. 2-Position Power Screw Terminal Connector
1
2
3
1. V (Positive) Terminal Screw
2. C (Negative) Terminal Screw
3. Connector Screws
Caution
Do not tighten or loosen the terminal screws on the power connector
while the power is on.
3.
Connect the positive lead of the isolated outputs power source to the V terminal of the
power connector plug and tighten the terminal screw to 0.2 to 0.25 N · m (1.8 to 2.2 lb ·
in.) of torque.
4.
Connect the negative lead of the isolated outputs power source to the C terminal of the
power connector plug and tighten the terminal screw to 0.2 to 0.25 N · m (1.8 to 2.2 lb ·
in.) of torque.
5.
Install the power connector plug into the ISO power receptacle on the IC-3121 chassis
and tighten the connector screws to 0.4 N · m (3.5 lb · in.) of torque.
6.
Turn on the external power source.
Configuring the IC-3121 for NI Linux Real-Time
The real-time version of the IC-3121 ships preloaded with NI Linux Real-Time. Complete this
section if you are using the real-time version of the IC-3121.
Connecting to the Development Computer
The IC-3121 can connect to the development computer directly or through a network.
Connecting Directly to the Development Computer
Complete the following steps to connect the device directly to the development computer.
1.
Verify the development computer is powered on.
2.
Connect one end of an Ethernet cable to the network port on the device.
3.
Connect the free end of the cable to an Ethernet port on the development computer.
4.
Verify the ACTIVITY/LINK LED on the port is on or blinking.
The device uses a link-local IP address when connected directly to the development computer.
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IC-3121 Getting Started Guide
