Specifications

Operation SDM-100A Satellite Modem
3–2 Rev. 0
3.1.1 Front Panel Keypad Option
This feature is a future option which will allow the user to plug in a hand-held keypad,
and will allow access to all programming capabilities.
3.1.2 LED Indicators
General modem status and summary faults are indicated by 10 LEDs on the front panel.
The indicators are defined as follows:
Faults
Name LED Color Meaning
Transmit Red Indicates that a fault condition exists in the transmit chain.
Receive Red Indicates that a fault condition exists in the receive chain.
Common fault Red Indicates that a common equipment fault condition exists.
Stored Yellow Indicates that a fault has been logged and stored.
The fault may or may not be active.
Status
Power On Green Indicates that power is applied to the modem.
Transmitter On Green Indicates that the transmitter is currently on. This indicator
reflects the actual condition of the transmitter, as opposed to
the programmed condition.
Carrier Detect Green Indicates that the decoder is locked.
Test Mode Yellow Flashes when the modem is in a test configuration.
Alarms
Transmit Yellow Indicates that a transmit function is in an alarm condition.
Receive Yellow Indicates that a receive function is in an alarm condition.