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CDM-625 Advanced Satellite Modem
Front Panel Operation
Press ENTER or CLEAR when done viewing to return to the previous menu, or use the
keys to select the Clear-All option. Then, at the prompt, use the
No and press ENTER to implement.
5.2.3.5
Monitor: Rx Parameters
Rx-Parameters: EbNo=11.4dB
BER=0.0E-9
If the demodulator is locked, then this screen shows the following:
Item
Description
This s hows the v alue of Eb/No calculated by t he dem odulator. The v alue r eferred t o her e i s t he
Eb/No
energy per information bit (Ebi), divided by the noise spectral density (No).
The frequency offset of the received carrier, in kHz, with a displayed resolution of 100 Hz.
∆F
BER
This is an estimate of the corrected BER.
(Buffer fill state) This shows the fill state (in percent), of the receive Buffer. After a reset, it will read
Buffer
50. A value <50% indicates that the buffer is emptying, and >50% indicates that it is filling.
A dBm reading indicating the signal level of the desired receive carrier with a displayed resolution of
Rx-Level
0.5 dB
5.2.3.6
Monitor: AUPC-Parameters
AUPC-Params:
The top line displays the value of Remote Eb/No of the demodulator at the distant end of the
satellite link. The Remote Eb/No displays Unlock if the remote Demod is unlocked.
The bottom line shows how much the AUPC system has increased the output power. If AUPC is
not enabled, then the value of Tx Power Increase displays as 0.0 dB.
5.2.3.7
Monitor: CnC-Parameters
CnC-Params:PwrRatio=-04.1dB PSDR=+01.9dB
Freq-offset=-123.4kHz
When enabled and locked, the screen displays the CnC performance data. This read-only display
updates once every second.
Buffer=51%
Remote EbNo=
Transmit Power Increase= 1.2 dB
▲▼
∆F=+011.7kHz
RxLevel=-43.5dBm
6.8 dB
Delay=123.4ms
5–75
Revision 13
MN-CDM625
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