Tvl=, - Comtech EF Data CDM-600 Installation And Operation Manual

CDM-600 Satellite Modem
Remote Control
Command
Arguments
Parameter
(Instruction for Command
Code and or Response
Type
to Query
Qualifier)
Remote N/A 4 bytes
Eb/No
Tx Power N/A 3 bytes
Level
Increase
Tx Clock TCK= 1 byte, value
Source of 0 thru 3
Invert Tx Data ITD= 1 byte, 0 or 1
Tx Audio TVL= 4 bytes
Volume
Control
Description of Arguments
Query only.
Returns the value of Eb/No of the remote demod.
Responds 99.9 = remote demod unlocked.
Responds xx.x if EDMAC is disabled.
xx.x=02.0 to 16.0
Example: REB=12.4
Note: For values > 16.0 dB, the reply will be 16.0
Query only.
Returns the increase in Tx power level, in dB (from the
nominal setting) due to the action of AUPC.
Responds x.x if AUPC is disabled.
Example: PLI=2.3
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. (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)
16–12
MN/CDM600.IOM
Query
Response
(Instruction
to Response to Query
Code and
Command
Qualifier)
N/A REB? REB=xx.x
(see description of
arguments)
N/A PLI? PLI=x.x
(see description of
arguments)
TCK= TCK? TCK=x
TCK? (see description of
arguments)
TCK*
TCK#
ITD= ITD? ITD=x
ITD? (see description of
arguments)
ITD*
ITD#
TVL= TVL? TVL=aabb
TVL? (see description of
arguments)
TVL*
TVL#
Revision 7