Comtech EF Data SLM-5650A - Manual (Page 117)

SLM-5650A Satellite Modem Revision 8
Front Panel Operation MN-SLM5650A
5–35
The examples that follow depict alarm status screens displayed for the Mod 1 st and Intf Tx 1 st
character positions. If the Mod 1 st character position is selected:
Mod: +--- Mod symbol clk
Intf: ---- not locked.
If the Intf Tx 1 st character position is selected:
Mod: ---- TXIntf data
Intf: +--- not locked.
Monitor: Alarms  Receive
Demod: --------- Press for
Intf: ---------- detailed status
Press [ENT] to access the available read-only Demodulator and Intf (Interface) Rx alarm screens.
Then, use the  arrow keys to navigate through the displayed Demodulator and Interface
character positions (Demod#1 through #6, and Rx Intf#1 through #10). The status message to the
right changes based on the current cursor position, as per the following table:
Receive (Rx) Alarm Position Description
Top row Demod #1
Demod #2
Demod #3
Demod #4
Demod #5
Demod #6
Demodulator carrier Phase Lock Loop status.
Demodulator FEC (forward error correction) lock status.
Demodulator RF Synthesizer Phase Lock Loop status.
Demodulator IQ activity status.
Composite Power exceeds 40 dBc.
Composite Power exceeds 20 dBm.
Bottom row Rx Intf #1
Rx Intf #2
Rx Intf #3
Rx Intf #4
Rx Intf #5
Rx Intf #6
Rx Intf #7
Rx Intf #8
Rx Intf #9
Rx Intf #10
Demultiplexer lock status.
Doppler buffer status.
Doppler buffer fill status.
Doppler buffer overflow status.
Doppler buffer underflow status.
Doppler buffer Phase Lock Loop status.
Doppler buffer reference clock activity status.
Receive data interface AIS (alarm indication signal) status.
Receive Eb/No lower than Eb/No threshold status.
Internal BERT sync status.
The examples that follow depict the alarm status screens displayed for the Demod 1 st and Intf Rx
1 st character positions. If the Demod 1 st character position is selected:
Demod: +--- Demod IF not
Intf: --------- locked.
If the Intf 1 st character position is selected: