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CDM-600L Satellite Modem
Remote Control
Command
Arguments
(Instruction
for Command
Parameter
Type
Code and
or Response
Qualifier)
Tx Clock
TCK=
1 byte, value 0
Source
thru 3
Invert Tx
ITD=
1 byte, value 0
Data
or 1
Tx Ternary
TTC=
1 byte, value
Code
of 0 thru 3
Tx Audio
TVL=
4 bytes
Volume
Control
Transmit
TBA=
4 bytes, each a
Backward
value of 0
Alarms Enable
thru 2
Description of Arguments
to Query
Command or Query.
Tx Clock Source, where:
0=Internal
1=Tx Terrestrial
2=Rx Loop-Timed
3=External Clock
Example: TCK=0 (selects Internal)
Command or Query.
Invert Transmit Data
0=Normal
1=Inverted
Example: ITD = 1 (selects Inverted TX Data)
Command or Query. (G.703 Parameter)
Tx Ternary Code, where:
0=AMI
1=B8ZS
2=B6ZS
3=HDB3
Example: TTC=1 (selects B8ZS)
Command or Query. (Audio/IDR Parameter)
Tx Audio Volume control, in the form aabb, where:
aa=Tx 1 volume control in dB, values defined below.
bb=Tx 2 volume control in dB, values defined below.
Valid values: -6, -4, -2, +0, +2, +4, +6, +8
Example: TVL= -2+4 (sets Tx 1 to 2 dB and Tx 2 to +4 dB)
Command or Query. (IDR Parameter)
Transmit Backward Alarm enable:
0=Disable
1=Enable Internal (S/W)
2=Enable External (H/W)
Position indicates backward alarm numbers: 1234
Example: TBA=0120
Response to
Command
TCK=
TCK?
TCK*
TCK#
ITD=
ITD?
ITD*
ITD#
TTC=
TTC?
TTC*
TTC#
TVL=
TVL?
TVL*
TVL#
TBA=
TBA?
TBA*
TBA#
16–11
Revision 2
MN/CDM600L.IOM
Query
(Instruction
Response to Query
Code and
Qualifier)
TCK?
TCK=x
(see description of
arguments)
ITD?
ITD=x
(see description of
arguments)
TTC?
TTC=x
(see description of
arguments)
TVL?
TVL=aabb
(see description of
arguments)
TBA?
TBA=xxxx
(see description of
arguments)
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