Comtech EF Data CDM-570A Installation And Operation Manual page 597

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.
To suspend CnC-APC at any time:
For the CDM-570AL only: On the top line, use the
and then press ENTER.
For the CDM-570A only: On the bottom line, use the ▲▼ arrow keys to select Act?
(Activate?) as N(No), and then press ENTER.
The CnC-APC status message on the bottom line of the display will update accordingly,
as per the following example:
Mode: APC,Side-A, C-band
Act?N APC is not active
Note that, when CnC-APC is suspended, it is de-activated on both sides.
If a message other than OK is displayed after attempting to perform a re-balance, the
CnC-APC system will not activate, and you should correct the link conditions before re-
attempting to activate it.
DoubleTalk Carrier-in-Carrier Option
CDM-570A/570AL Satellite Modem with Optional Packet Processor
CDM-570AL (L-Band):
CnC-APC:Activate
Suspend
No APC Frame Sync
CAUTION – READ THIS IMPORTANT NOTE:
YOU ARE NOT ALLOWED TO CHANGE CONFIGURATION
PARAMETERS (MODULATION TYPE, FEC TYPE, CODE RATE,
FRAMING, ETC) THAT POTENTIALLY AFFECT THE OPERATION OF
CNC-APC WHILE CNC-APC IS ACTIVE. IF YOU ATTEMPT TO CHANGE
ONE OF THESE PARAMETERS EITHER LOCALLY OR REMOTELY
WHEN CNC-APC IS ACTIVE, THE MODEM REJECTS THE CHANGE. TO
CHANGE THESE CONFIGURATION PARAMETERS, YOU MUST FIRST
SUSPEND CNC-APC OPERATION. FOLLOWING ANY CHANGES, YOU
MUST RE-ACTIVATE CNC-APC. BE AWARE THAT A NEW RE-BALANCE
OPERATION PRECEDES CNC-APC RE-ACTIVATION.
CDM-570A (70/140 MHz):
Mode: APC,Side-A, C-
band
Act?N APC is not active
◄ ►
arrow keys to select Suspend,
G–31
Revision 5
MN-CDM570A