Led Indicators - Comtech EF Data SLM-5650A Installation And Operation Manual

The first three columns of keys are multi-function in purpose. Number-to-character assignment for
this array means that each successive push of key 1 through 9 selects the nested choices. For
example, the first time the '2' key is pushed, it selects a '2'; the second time, an 'A'; the third time,
a 'B'; the fourth time, a 'C'. Pushing the key a fifth time would start over with a '2'.
The last column of keys in this array function as follows:
Use the '+/-' key to change signs (positive/negative);
o
Use the '.' key to enter a decimal point;
o
Use the '0' key to enter a zero.
o
7.1.2

LED Indicators

The 10 LED indicators (Item 4 in Figure 7-1) convey operational states as follows:
•
General modem summary fault information
•
Status
•
Alarms
The behavior of the individual front panel LED indicators is as follows:
Item
Unit Status
Tx Status
Rx Status
Tx ON
Stored Events
Front Panel Operation
Lights GREEN when there are no Unit Faults or Stored Faults.
•
Lights AMBER when a Unit Fault exists. The fault is stored in the Event Log
•
memory.
Lights RED when a Unit Alarm currently exists. The fault is stored in the Event
•
Log memory.
Lights GREEN when there are no Tx Traffic Faults or Alarms.
•
Lights AMBER when a Tx Traffic Alarm exits.
•
Lights RED when a Traffic Fault exists.
•
Remains OFF when the unit is DEMOD ONLY.
•
Lights GREEN when there are no Rx Traffic Faults or Alarms.
•
Lights AMBER when an Rx Traffic Alarm exits.
•
Lights RED when an Rx Fault exists.
•
Remains OFF when Demod Faults are MASKED.
•
Lights GREEN when the Transmitter is currently ON (this LED reflects the
•
actual operating state of the transmitter, and not its programmed setting).
Remains OFF when the Transmitter is OFF.
•
Lights AMBER when Stored Events are logged.
•
Remains OFF when there are no Stored Events.
•
7–3
SLM-5650A Satellite Modem
Description
Revision 10
MN-SLM-5650A