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CiM-550 IP Enabled Satellite Modem Rev. 2
Web Server Pages CD/CIM550.IOM
204
Field Description
Modem Statistics Log The user may scroll backwards or forwards through the entries in
the statistics log, using the UP/DOWN arrow keys. Pressing
ENTER or CLEAR will take the user back to the previous menu.
The event log can store up to 250 events.
The top line of the display indicates the log entry number, and the
time and date of the entry. Note that in accordance with
international convention, the date is shown in DAY-MONTH-YEAR
format.
The bottom line of the display shows the statistics data which has
been measured and recorded.
The meaning and format of the numbers is as follows:
Minimum Eb/No, Average Eb/No, Maximum TPLI, Average TPLI
(where TPLI means Transmit Power Level increase, if AUPC is
enabled).
The user defines a measurement interval (see MONITOR, STATS,
CONFIGURE) 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.
Notes: 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 ‘0.0'.
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,04.5,0.0,0.0 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.)
If the user selects CLEAR, the statistics log is cleared.