Comtech EF Data CDM-600/600L - Manual (Page 116)

CDM-600/600L Open Network Satellite Modem Revision 3
Front Panel Operation MN/CDM600L.IOM
5–40
5.7.3 MONITOR: STATISTICS
STATISTICS: STA114: 16.0,16.0,9.0,9.0
09/12/99 14:48:06 CLEAR ALL: NO (N/Y)
Scroll backwards or forwards through the entries in the statistics log using the [ ↑][↓] arrow keys.
Press [ENT] or [CLR] to return to the previous menu.
The top line displays the log entry number and Statistics log. The bottom line of the display
indicates the time and date of the entry shown in DAY-MONTH-YEAR format.
The display shows the statistics data that has been measured and recorded. The statistics log can
store up to 199 log entries. (To enable statistics logging, see Sect. 5.4.13 CONFIG:
STATISTICS.)
The meaning and format of the numbers is as follows:
• The user defines a measurement interval (see CONFIG: STATISTICS) and during this
interval, Eb/No and Transmit Power Level Increase (TPLI) are observed, at a 1 second rate.
• At the end of this period, the average Eb/No is calculated and recorded, and the minimum
value seen in the interval.
• Similarly, the average TPLI is calculated, along with the highest value seen in the interval.
IMPORTANT
If the demod has lost lock during the measurement interval, the
minimum Eb/No will show ‘LOSS’ rather than indicate a value.
However, the average value (while the demod was locked) will still be
calculated and shown. If, on the other hand, the demodulator has
been unlocked for the entire measurement interval, the average
Eb/No will also show ‘Loss’. (The display will show ‘Loss,Loss’.)
• If the measured values are ≥ 16.0 dB, the display will show 16.0 dB.
• If AUPC is not enabled, the values of maximum and average TPLI will both show ‘0.0'.
Example:
08.0,13.5,2.5,1.8 means:
• Minimum Eb/No observed in the measurement interval = 8.0 dB
• Average Eb/No observed in the measurement interval = 13.5 dB
• Maximum TPLI observed in the measurement interval = 2.5 dB
• Average TPLI observed in the measurement interval = 1.8 dB
Example:
LOSS,04.5,0.0,0.0 means:
• There was a loss of demod lock during the measurement interval
• Average Eb/No observed in the measurement interval = 4.5 dB
• Maximum TPLI observed in the measurement interval = 0 dB
• Average TPLI observed in the measurement interval = 0 dB (which
indicates no AUPC activity, or that AUPC is disabled.)
Use the [ ←][→] arrow keys to select the [CLR]-All option. Select Yes or No using the [↑][↓]
arrow keys and press [ENT] to implement, or [CLR].