Led Indicators; Front Panel Keypad; Figure 3-2. Keypad; Table 3-1. Front Panel Indicators - Comtech EF Data SLM-7650 Installation And Operation Manual

SLM-7650 Satellite Modem
Operation
3.1.1

LED Indicators

The 8 LEDs on the front panel indicate general modem summary fault information and
status. The indicators are defined as follows in Table 3-1:
Name LED
Faults
Transmit Red/Yellow
Receive Red/Yellow
Common Red
Stored Yellow
Status
Power On Green
Transmitter On Green
Carrier Detect Green
Test Mode Yellow
3.1.2

Front Panel Keypad

The front panel keypad (Figure 3-2) controls the local operation of the modem. The
keypad consists of six keys. Each key provides one or more logical functions (Table 3-2).
The modem responds by beeping whenever a key is pressed:
•
•

Table 3-1. Front Panel Indicators

A fault (red) or alarm (yellow) condition exists in the transmit chain.
A fault (red) or alarm (yellow) condition exists in the receive chain.
A common equipment fault condition exists.
A fault or alarm has been logged and stored.
The fault may or may not be active.
Power is applied to the modem.
Transmitter is currently on. This indicator reflects the actual condition of the
transmitter, as opposed to the programmed condition.
Decoder is locked.
Flashes when the modem is in a test configuration.
A single-beep indicates a valid entry and the appropriate action was taken.
A double-beep indicates an invalid entry or a parameter is not available for
operation.

Figure 3-2. Keypad

Meaning
3-2
Revision 4
MN/SLM7650.IOM