Cisco Model D-PCG1000 PowerKEY CAS Gateway インストールガイド
Chapter 3 Operating the DAVIC QPSK Demodulator
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Accessing the QPSK Demodulator Features
You can access other menus and screens by pressing the following front panel keys:
FREQ, STATUS, OPTIONS, and TEST. You can use the ENTER key to store and save
any changes to the configuration settings. This section provides instructions for
using these keys.
System Control
In normal operation, all configuration of the QPSK demodulator is performed from
the DNCS and the QPSK modulator. Front panel adjustments are not required.
Important! The DNCS overrides many of the configuration changes made using the
Important! The DNCS overrides many of the configuration changes made using the
front panel keys if the QPSK demodulator is reset.
The ENTER Key
Use the ENTER key to store any changes to the configuration settings. The ENTER
also controls status tests.
Important! If the ENTER key has been pressed, or if no front panel buttons are
Important! If the ENTER key has been pressed, or if no front panel buttons are
pressed after one minute has elapsed, the demodulator displays the Default Status
screen.
Note: The one-minute timeout does not apply to the TEST menus.
Note: The one-minute timeout does not apply to the TEST menus.
Front Panel Indicators
The following indicators are located on the left side of the front panel:
ALARM (red): Illuminates for any alarm. For more information, refer to
Troubleshoot Alarms (on page 39).
BURST DATA (yellow): Illuminates during data transfers between the IF board
and the digital interface and control board.
MAC SYNC (green): Illuminates as long as a reference clock and frame
synchronization are received from the QPSK modulator.
Note: During normal operation, the MAC SYNC and BURST DATA indicators
illuminate. However, the ALARM indicator does not illuminate during normal
operation, and only illuminates when an alarm condition exists.
Self-Test Failure Indication
If the QPSK demodulator fails any power-on self-test (POST), the ALARM LED
illuminates, and the LCD screen displays an alarm message.