Cisco Model D9477 MQAM Modulator Installation Guide
Front Panel Overview
78-717866-01 Rev D
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Front Panel Overview
Front Panel Diagram
The following illustration shows the front panel components of the MQAM
modulator. The labeled areas are described in the table below.
Note: The front panel components are identical for each model of the MQAM
Note: The front panel components are identical for each model of the MQAM
modulator.
Item
Component
Description
1
MAJOR ALARM
indicator
This LED is red and lights for a major alarm condition. Major
alarms occur for hardware or software conditions that
indicate a serious disruption of service or the malfunctioning
or failure of important circuits. The LED goes off when all
major alarms have cleared.
2
MINOR ALARM
indicator
This LED is yellow and lights for a minor alarm condition.
Minor alarms indicate a less critical error condition. The
modulator may continue to operate with some loss of
functionality. The LED goes off when all minor alarms have
cleared.
3
CW indicator
This LED is yellow and lights when any one of the RF
carriers is set to continuous wave (CW) mode.
4
LCD alphanumeric
display screen
This screen displays status and operating screens controlled
by the front panel keys.
5
The Down Arrow key decrements a displayed value or
navigates through a set of displayed values. This key is only
active when the display has a flashing value, which indicates
that the value can be changed. This key is primarily used for
decreasing a displayed value such as frequency or level.
6
The Up Arrow key increments a displayed value or navigates
through a set of values. This key is only active when the
display has a flashing value, which indicates that the value
can be changed. This key is primarily used for incrementing a
displayed value such as frequency or level.