User's Manual

ADCP-75-130 • Issue 3C • August 2006

Page 60

Note: The HOST PORT on the DEU does not have an On/Off switch and can only be

disabled by placing the DEU AC power On/Off switch in the OFF position (press O).

Turning off the power to the DEU will create an alarm condition. If the DEU must be turned

off, inform the NOC or alarm monitoring system operator that an 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 32.

TYPE A

TRANSCEIVER

TYPE B

TRANSCEIVER

17283-A

RELEASE TAB

RELEASE

LEVER

TRANSCEIVER COLOR CODE

BLUE = SINGLE-MODE (9 MICRON)

BLACK/

BEIGE = MULTI-MODE (50 OR 62.5 MICRON)

Figure 32. DHU or DEU 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 transceiver fiber type (see Figure 32).

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

as shown in Figure 33.

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 33) must be closed for installation.