Comtech EF Data CDM-570A - Manual (Page 544)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Appendix G Revision 2
G–26
For the CDM-570A only: On the bottom line, select use use the ▲▼ arrow keys to select set
Act? (Activate?) as Y or N (where Y? N is equivalent to Suspend for L-Band units).
Mode: APC,Side-A, C-band
Act?Y APC is not active
Press ENTER when done.
For either unit, 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
If the message shown begins with OK, then after approximately 5 seconds, the display
changes as per the following example:
CnC-APC:Activate Suspend
No APC Frame Sync
At this point, as indicated on the bottom line of the display, CnC-APC is active.