Comtech EF Data CDM-750, Installation And Operation Manual

Page: 122 / 300

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Front Panel Operation MN-CDM750
5–46
5.2.4.2 Monitor: Stored-Events
Stored Events: Clear-All: No (No,Yes)
#199 FT- Frame Sync 25/10/10 16:25:24
An example of a Stored Events screen is shown here. Use the
W X
arrow keys to navigate to the
bottom line, and then use the
ST
arrow keys to browse through the available event log
entries.
The event log can store up to 255 entries (events). When a fault condition occurs, it is time ‐ and
date ‐ stamped, and then stored in the event log. Similarly, when the fault condition clears , this is
also recorded.
Note that, in accordance with European convention, the log shows the date in DAY ‐ MONTH ‐
YEAR format. Time is displayed in military (24 ‐ hour) format.
Press ENTER or CLEAR to return to the previous menu or, to flush the event log buffer use the
W
X
arrow keys to select Clear ‐ All . Then, use the arrow keys to select Yes or No .
When Yes is selected, Clear ‐ All clears the event log, and then returns the user directly to the
previous menu. However, if there are faults present on the unit at this time, they will be time ‐
stamped once again, and new log entries will be generated.
Press ENTER when done.
5.2.4.3 Monitor: ACM
Tx Modcod=QPSK 1/2 R99.9 db
Rx Modcod=PL Dummy L99.9 db
This read ‐ only screen provides the active ACM mode information:
Item Description
Tx Modcod Displays the Tx ModCod.
RemEsNo Displays the EsNo reported by the remote modem.
Rx Modcod Displays the Rx ModCod.
LocEsNo Displays the EsNo of the local unit.
5.2.4.4 Monitor: Rx-Params (Rx Parameters)
When the demodulator is not locked, this read ‐ only screen appears as follows:
Demodulator
Unlocked RxLevel= dBM