Comtech EF Data CDM-625A - Page 632

CDM-625A Advanced Satellite Modem MN-CDM625A
Appendix F Revision 4
F–26
On the bottom line, to edit the power output level and the maximum permitted increase in
power level when in APC Mode: Use the
◄ ► arrow keys to select a digit to edit, and then use
the
▲▼ arrow keys to change the value of that digit. Press ENTER.
Note that when APC is in an active state, the value of the power level displayed in the
bottom left will show ‘AUTO’.
6) Go back to the SELECT: CONFIG CnC  MODE menu. On the bottom line, which will be
displaying Activate? N (Y,N), use the
▲▼ arrow keys to select Y(Yes)and then
press ENTER.
The modem display will update, similar to the following example:
The CnC Mode: APC,Side ‘A’,C-Band (Off,On,APC)
Suspend? N (Y,N) OK-ReBalance Done ()
The message on the bottom line can be any one of the following:
Displayed Message
Expanded Meaning
OK-ReBalance Done
Full re-balance was achieved
OK(P)CnCRatio Lim
Partial re-balance, limited by CnC ratio approaching its working limit
OK(P)-LocalPwr Min
Partial re-balance, limited by local power approaching its lower limit
OK(P)-LocalPwr Max
Partial re-balance, limited by local power approaching its upper limit
OK(P)-LocalPwr Lim
Partial re-balance, limited by local power approaching TPLI
max
OK(P)-DistPwr Min
Partial re-balance, limited by distant power approaching its lower limit
OK(P)-DistPwr Max
Partial re-balance, limited by distant power approaching its upper limit
OK(P)-DistPwr Lim
Partial re-balance, limited by local power approaching TPLI
max
OK(P)-Incomplete
Partial re-balance, algorithm did not fully converge
No APC Frame Sync
Communication not possible – no APC frame sync
Locl EbNo too high
The local Eb/No is too high (>16 dB) to determine re-balance params
Dist EbNo too high
The distant Eb/No is too high (>16 dB) to determine re-balance params
DistEnd ReBal fail
The distant end failed to re-balance
DistEnd NoResponse
The distant end failed to respond
Fail-CalcMismatch
No Re-balance - the solution calculated by each end does not match
CnC Ratio too high
The CnC ratio is too high (>9 dB) for re-balancing to be attempted
LoclMargin too low
There is insufficient local Eb/No margin for an APC re-balance
DistMargin too low
There is insufficient local Eb/No margin for an APC re-balance
Rx DataRate<64kbps
The Rx data rate needs to be 64 kbps or higher for APC
Rx DataRate<64kbps
The Tx data rate needs to be 64 kbps or higher for APC
Local RSL too low
The local RSL is below the minimum for the operating symbol rate
Dist RSL too low
The distant RSL is below the minimum for the operating symbol rate