Comtech EF Data CDM-570AL - Page 299

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Serial-based Remote Product Management 8–33 MN-CDM570A
Parameter
Type
Command
(Instruction
Code and
Qualifier)
Arguments for
Command or
Response to
Query
Description of Arguments
Response to
Command
Query
(Instruction Code
and Qualifier)
Response to
Query
DoubleTalk
Carrier-in-
Carrier (CnC)
Mode (continued)
Notes:
1) CnC may be enabled only if:
• The optional plug-in hardware CnC card is installed AND a CnC FAST option
is unlocked.
• The range of permitted data rates is controlled by a FAST feature code.
(Read EID to decode the installed options for the modem)
2) If CnC-APC is active (APS=22), key transmission/reception (Modulation, FEC
type, Code Rate, Framing, Data Rate, Interface) cannot be modified until CnC-
APC is suspended. (Use APC command to suspend or activate.)
3) If CNM=2..9, AUP is forced to 3.
4) Entries 1 to 9 are not valid if Tx or Rx Symbol Rate is <16ksps.
CnC
Frequency
Range/offset
CCF=
3 bytes
Command or Query.
Valid only in CDM-570A Compatible Mode (CMO=1).
Sets or returns the maximum value that may be entered, in the form xxx, as the
CnC Sweep frequency range; depends on the Rx symbol rate as follows:
16ksps to 64ksps: ±1 to the symbol rate (ksps)/2
64ksps and above: ±1 to 32 kHz
Example: <0/CCF=030
CCF=
CCF?
CCF*
CCF#
CCF?
CCF=xxx
(see Description of
Arguments)
CnC
Min/Max
Search Delay
CSD=
6 bytes
Command or Query.
Valid only in CDM-570A Compatible Mode (CMO=1).
Sets or returns CnC min/max delay value in milliseconds, in the form xxxyyy,
where:
xxx = minimum delay
yyy = maximum delay
Maximum allowable value is 300ms
Example: <0/CSD=010225
CSD=
CSD?
CSD*
CSD#
CSD?
CSD=xxxyyy
(see Description of
Arguments)