4 backward alarms – Comtech EF Data DMD-2050E User Manual
Page 173
DMD2050E Univeral Satellite Modem
Maintenance and Troubleshooting
MN-DMD2050E Revision 2
6–11
NOTE
These alarms show the status of the alarms RECEIVED FROM the distant satellite end.
IDR1 SAT ALARM 1
{PASS, FAIL}
IDR1 SAT ALARM 2
{PASS, FAIL}
IDR1 SAT ALARM 3
{PASS, FAIL}
IDR1 SAT ALARM 4
{PASS, FAIL}
IBS SAT ALARM
{PASS, FAIL}
T1E1 SATTERR ALM {PASS, FAIL}
SAT MAP SUMMARY {NONE, BK 1; BK 2; BK 1&2; BK 3; BK 1&3; BK 2&3;
BK 1&2&3; BK 4; BK 1&4; BK 2&4; BK 1&2&4;
BK 3&4; BK 1&3&4; BK 2&3&4; BK 1&2&3&4}
Summary alarm is given when
criteria meets the selection above.
NOTE
These alarms show the control status of the alarms TRANSMITTED TO the distant satellite end.
IDR1 SAT CNTRL
{STNDRD, FRC ON, FRC OFF}
STNDRD:
Set Alarm functions in a normal configuration
FRC ON:
Forces an ON alarm status that is transmitted to the distant end.
FRC OFF:
Forces an OFF alarm status that is transmitted to the distant end.
IDR2 SAT CNTRL
{STNDRD, FRC ON, FRC OFF}
IDR3 SAT CNTRL
{STNDRD, FRC ON, FRC OFF}
IDR4 SAT CNTRL
{STNDRD, FRC ON, FRC OFF}
IBS SAT CNTRL
{STNDRD, FRC ON, FRC OFF}
T1E1 TERR CNTRL
{STNDRD, FRC ON}
IBS TX PROMPT
{STNDRD, FRC ON}
IBS TX SERVICE
{STNDRD, FRC ON}
6.4.4
Backward Alarms
Backward alarms are received from the distant end of the satellite link.
In IBS mode (including Drop & Insert), Backward Alarm 1 is the only alarm used. If the
demodulator at the distant end loses the signal lock, Backward Alarm 1 is received.