CDM-500 Closed Network Satellite Modem
Remote Control
Rev. 1.3
B–9
Parameter
Type
Command
(Instruction
Code and
qualifier)
Arguments
for Command
or Response to
Query
Description of arguments
(note that all arguments are ASCII numeric codes,
that is, ASCII codes between 48 and 57)
Response to
Command (target to
controller)
Query
(Instruction
Code and
qualifier)
Response to
query (target
to controller)
Rx FEC Code
Rate
RCR=
1 byte, value of
1,3 or 7
Command or Query.
Rx FEC Code rate, where:
1 = Rate 1/2,
3 = Rate 3/4,
7 = Rate 7/8
All other codes invalid.
Example: RCR=1 (which is Rate 1/2)
RCR= (message ok)
RCR? (received ok,
but invalid argument
found)
RCR* (message ok,
but not permitted in
current mode
RCR? RCR=x
(same format as
command
argument)
Rx
Modulation
Type
RMD=
1 byte, value of
1or 2
Command or Query
Rx Modulation type, where:
1 = BPSK
2 = QPSK
All other codes invalid.
Example: RMD=1 (BPSK)
RMD= (message ok)
RMD? (received ok
but invalid argument
found)
RMD* (message ok,
but not permitted in
current mode)
RMD? RMD=x
(same format as
command
argument)
Rx Spectrum
Invert
RSI=
1 byte, value of
0 or 1
Command or Query.
Rx Spectrum Invert selection, where:
0 = Normal
1 = Rx Spectrum Inverted
All other codes invalid.
RSI= (message ok)
RSI? (received ok,
but invalid argument
found)
RSI* (message ok,
but not permitted in
current mode)
RSI?
RSI=x
(same format as
command
argument)
Rx
Descrambler
RDS=
1 byte, value of
0 or 1
Command or Query.
Rx De-scrambler state, where:
0 = Off
1 = On (V.35 in unframed mode, synchronous in
framed mode
All other codes invalid.
Example: RDS=1 (which is de-scrambler On)
RDS= (message ok)
RDS? (received ok,
but invalid argument
found)
RDS* (message ok,
but not permitted in
current mode)
RDS?
RDS=x
(same format as
command
argument)
Rx Demod
Acq Sweep
Width
RSW= 2
bytes,
numerical
Command or Query.
Rx ± acquisition sweep range of demodulator, in
kHz, ranging from ± 1 kHz to ± 30 kHz.
Example: RSW=09 (which is 9 kHz)
RSW= (message ok)
RSW? (received ok,
but invalid arguments
found)
RSW* (message ok,
but not permitted in
current mode)
RSW?
RSW=xx (same
format as
command
arguments)
Rx Clock
Mode
RCK=
1 byte, value of
0 or 1
Rx Clock mode, where:
Command or Query.
0 = Buffer disabled
1 = Buffer enabled
All other codes invalid.
Example: RCK=0 (which is buffer disable)
RCK= (message ok)
RCK? (received ok,
but invalid argument
found)
RCK* (message ok,
but not permitted in
current mode)
RCK?
RCK=x
(same format as
command
argument)
Содержание CDM-500
Страница 1: ...Part Number MN CDM500 IOM Revision 1 3 CDM 500 Satellite Modem Installation and Operation Manual...
Страница 3: ......
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Страница 25: ...Physical Description CDM 500 Closed Network Satellite Modem 4 4 Rev 1 3 This page is intentionally blank...
Страница 61: ...EDMAC Channel CDM 500 Closed Network Satellite Modem 8 4 Rev 1 3 This page has been intentionally left blank...
Страница 65: ...Spec Summary CDM 500 Closed Network Satellite Modem A 4 Rev 1 3 Figure A 1 BER Viterbi Decoding...
Страница 71: ...Remote Control CDM 500 Closed Network Satellite Modem B 6 Rev 1 3 This page is intentionally blank...
Страница 83: ...Remote Control CDM 500 Closed Network Satellite Modem B 18 Rev 1 3 This page has been intentionally left blank...
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Страница 88: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...