Fault/Alarm Display And Description - Comtech EF Data SDM-9000 Installation And Operation Manual

Maintenance

6.2.2.1 Fault/Alarm Display and Description

This section consists of general fault, status, and alarm information that is indicated by
the 10 LEDs on the front panel. The LEDs indicate the following information is in the on
condition.
TX
RX
Common
Stored
Power ON
Transmitter ON
Carrier Detect
Test Mode
TX
RX
A fault (red LED) indicates a fault that currently exists in the modem. The LED is turned
off when the fault clears.
When a fault occurs, it is stored in the stored fault memory and indicated by the single
yellow LED. If the fault clears, the occurrence is also cleared.
A total of 10 occurrences of any fault can be stored. Each fault or stored fault (indicated
by a front panel LED) is the sum of many faults. To determine which fault has occurred,
use the Fault or Stored Fault front panel menu.
Alarms are considered minor faults which will not switch the modem offline in a
redundant system. Alarms are shown in the Fault or Stored Fault front panel menu by a
reversed contrast "
6–18
Name Color
Red A fault condition exists in the TX chain.
Red A fault condition exists in the RX chain.
Red A common equipment fault condition exists.
Yellow A fault has been logged and stored. The fault may or may not
be active.
Name Color
Green Power is applied to the modem.
Green Transmitter is currently on. This indicator reflects the actual
condition of the transmitter, as opposed to the programmed
condition.
Green Decoder is locked.
Yellow Flashes when the modem is in a test configuration.
Name Color
Yellow A TX function is in an alarm condition.
Yellow A RX function is in an alarm condition.
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SDM-9000 Satellite Modem
Faults
Description
Status
Description
Alarms
Description
Rev. 4