Mocomtech CDM-QX - Manual (Page 112)

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Front Panel Operation MN/CDMQX.IOM
5–46
5.5.4 MONITOR: Stats
Link Statistics: View
Clear-All Config (◄ ►,ENT)
Select View, Clear-All, or Config using the ◄ ► arrow keys, then press
ENTER
.
5.5.4.1 MONITOR: Stats Æ View
Sta198: 30/11/08 10:37:32
16.0, 16.0, 9.0, 9.0 (▲ ▼,ENT)
Per this example, link statistics displayed are as follows:
Top Line
• Sta198 = Log entry number
• 30/11/08 10:37L32 = Time and date of log entry (in accordance with
international convention, the date is shown in DAY-MONTH-YEAR format)
Bottom Line
16.0, 16.0, 9.0, 9.0 = Measured and rounded statistics data, from left: Minimum
Eb/No, Average Eb/No, Maximum TPLI, Average TPLI (where TPLI means
Transmit Power Level increase, if AUPC is enabled).
The user may scroll backwards or forwards through the entries in the statistics log, using the ST
arrow keys. Press
ENTER
or
CLEAR
to return to the previous menu. The event log can store up to
255 events.
The user defines a measurement interval (see MONITOR: Stats Æ Config), and during this
interval Eb/No and TPLI are observed at a one 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.
Note: 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 greater than or equal to 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 ‘Off'.
Examples:
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
Loss, 04.5, Off, Off 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 = AUPC disabled
Average TPLI observed in the measurement interval = AUPC disabled