Installation Instructions

Mounting and Aligning an IFU

4.4 IFU Alignment

The alignment procedure should be performed for one IFU at a time. Do not attempt to align both

the near and far IFUs in a link simultaneously. This procedure requires personnel to be present at

both the near and far IFU.

4.4.1 Alignment Setup

Use the following procedure and refer to Figure 4-8 to set up an IFU for alignment:

1. Loosen the four vertical alignment screws, the horizontal alignment nut, and visually align

the near IFU to the far IFU.

Repeat Step 1 for the far IFU.

2. Remove the protective cap from the GPI/Test port on the IFU and connect the IFU test cable

as follows:

Test cable connector to the GPI/Test port of the IFU

BNC connector to the BNC-banana interface adapter cable (for voltmeter)

RJ-45 connector to the Ethernet port of the laptop computer

3. Turn on the voltmeter and select the appropriate DC voltage range.

4. Power up the IFU and laptop computer and launch IFU link manager.

5. Log on to the near IFU.

6. Use IFU link manager to set the near IFU radio transmitter to on.

7. Ensure that AdTPC is off and that the transmitter is set to “start power.”

8. Verify that transmitter (Tx) is on by the presence of an illuminated red LED indicator.

Repeat Step 2 through Step 8 for the far IFU.

NOTE: If the GPI/Test cable is in use, unplug the GPI/Test cable from the IFU and connect

the IFU test cable.

NOTE: If the installation environment is not conducive to laptop use, a routed fiber cable via

a 10BaseFL to 10BaseT media converter to the laptop will be needed.

NOTE: Upon application of power, the LED light will flash once. Bootup will complete

within two minutes.