Monitor: Remoteebno; Monitor: Aupc Parameters - Comtech EF Data CDM-425 Installation And Operation Manual

If the demodulator is locked, then this screen displays the following:
Item
This shows the value of Eb/No calculated by the demodulator. The value referred to here is the
Eb/No
energy per information bit (Ebi), divided by the noise spectral density (No).
(This item replaces "Eb/No" when IP-ACM or V2-ACM mode is active) In ACM, SNR is the preferred
SNR
metric. Remember that SNR = Eb/No + 10log(spectral efficiency)
The frequency offset of the received carrier, in kHz, in increments 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.
Rx-Level
A dBm reading indicating the signal level of the desired receive carrier in increments of 0.5 dB
6.2.3.6

Monitor: RemoteEbNo

The appearance of this screen varies depending on the active mode of operation.
For example, when a valid mode of operation is active:
Remote EbNo=
However, when an invalid mode of operation is active (e.g., Quad Drop & Insert):
Not applicable without EDMAC/EDMAC2/D&I/
D&I++/ESC++/FrmQDI/EDMAC3/VFEC-2/IP-ACM
6.2.3.7

Monitor: AUPC Parameters

The presentation of information varies slightly when in IP-ACM or V2-ACM mode.
For all modes except IP-ACM or V2-ACM:
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.
Front Panel Operation
Unlock
Remote EbNo=
Transmit Power Increase= 1.2 dB
CDM-425 Advanced Satellite Modem
Description
6.8 dB
6–86
Revision 0
MN-CDM-425