Facility Names And Functions (Rear & Front); Tally Contact/Voltage; Receiver Level Led (Front) - Hitachi CU-HD1500 Operating Instructions Manual

Facility names and functions (Rear & Front)
26 COMMUNICATION connector
Intercom and tally signals are input from
external system.
27 WFM CONTROL connector
This connector is used to select the display
mode of the waveform monitor.
28 TRUNK connector
Use for communication with TRUNK connector
on CA-HF1500 via RS-422 interface.
29 TALLY OUT connector
Contact outputs for tally signals.

30 TALLY CONTACT/VOLTAGE

The TALLY input can be contact or voltage
supply.
Set the TALLY switches according to the
systems connected to the COMMUNICATION
connector on rear panel.

31 Receiver Level LED (Front)

The strength of the arriving light signal via fiber
cable is indicated by position of lighting LED.
Indicate the receiver level approximately
GREEN1: -3dBm to -8dBm (Normal)
GREEN2: -8dBm to -11dBm
YELLOW: -11dBm to -14dB (Warning)
RED: under -14 dB (Alarm)
6
GREEN1
GREEN2
YELLOW
RED