CiM-550 IP Enabled Satellite Modem

Rev. 2

Web Server Pages

CD/CIM550.IOM

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.

 

 

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