User's Manual

ADCP-75-130 • Issue 3C • August 2006

Page 62

3. Disconnect the DC power cable connector from the RJ-45 power jack on the DRU front

panel.

Note: Disconnecting the power from the DRU will create an alarm condition. Inform the

NOC or alarm monitoring system operator that the alarm will be reported.

4. Disconnect the optical fiber connectors from the optical transceiver and place a dust cap

over each connector.

5. Release the optical transceiver from the transceiver socket by pulling outward on the

release lever (if type A) or release tab (if type B) as shown in Figure 34.

17285-A

TYPE A

TRANSCEIVER

TYPE B

TRANSCEIVER

RELEASE

LEVER

RELEASE TAB

TRANSCEIVER COLOR CODE

BLUE = SINGLE-MODE (9 MICRON)

BLACK/

BEIGE = MULTI-MODE (50 OR 62.5 MICRON)

Figure 34. DRU Optical Transceiver Removal

6. Remove the optical transceiver from the transceiver socket.

7. For replacement, select an optical transceiver that corresponds to the type of fiber

(single- or multi-mode) used in the installation. The color of the transceiver corresponds

to the fiber type (see Figure 34).

8. Remove the optical transceiver from the anti-static packaging and orient for installation

as shown in Figure 35.

Note: Two types of optical transceivers, type A and type B, are available. Both types

provide the same functionality. On the type A optical transceiver, the release lever (see

Figure 35) must be closed for installation.