User Manual

ADCP-75-136 • Issue 1 • November 2002
Page 56
© 2002, ADC Telecommunications, Inc.
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.