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Remote Control
Parameter
Command
Arguments
Type
(Instruction
for Command
Code and
or Response to
qualifier)
Query
Power level
DAC=
4 bytes,
DAC set
numerical
Write
EWR=
7 bytes
EEPROM
Value
Read
N/A
3 bytes
EEPROM
Value
Set RTC Date
DAY=
6 bytes,
numerical
Set RTC Time
TIM=
6 bytes,
numerical
Clear All
CAE=
None
Stored Events
B–14
Description of arguments
(note that all arguments are ASCII numeric codes,
that is, ASCII codes between 48 and 57)
FACTORY USE ONLY
Modulator power output DAC setting. An argument
between 0000 and 4095 is required
Example: DAC=1287
(Used for power-level calibration)
Command only. FACTORY USE ONLY
A command in the form ddd,aaa, where ddd is a
single byte data value between 0 and 255, and aaa is a
starting address (in the range 0 - 127) within the serial
EEPROM, where the data is to be written.
Example: EWR=127,104 means write the value 127
starting at address location 104.
(Used for power-level cal, amongst other things)
Query only. FACTORY USE ONLY
A query in the form aaa where aaa is a starting bit
address (in the range 0 - 127) within the modem's
serial EEPROM, requesting that the byte stored at that
location be returned.
Example: ERD?063 returns the value of the byte
stored at location 063.
(Used for power-level cal, amongst other things)
Command or query
A command in the form ddmmyy, where; dd = day of
the month, between 01 and 31, mm = month of the
year, between 01 and 12 and yy = year, between 97
and 96 (1997 to 2000, then 2000 to 2096)
Example: DAY=240457 would be April 24, 2057
Command or query
A command in the form hhmmss, indicating the time
from midnight, where hh = hours, between 00 and23;
mm = minutes, between 00 and 59, and ss = seconds,
between 00 and 59
Example: TIM=231259 would be 23 hours, 12
minutes and 59 seconds from midnight.
Command only
Instructs the unit to clear all Stored Events
This command takes no arguments.
CDM-500 Closed Network Satellite Modem
Response to
Query
Command (target to
(Instruction
controller)
Code and
qualifier)
DAC= (message ok)
DAC?
DAC? (received ok,
but invalid arguments
found)
DAC* (message ok,
but not permitted in
current mode.
EWR= (message ok)
N/A
EWR? (received ok,
but invalid arguments
found)
EWR* (message ok,
but not permitted in
current mode
N/A
ERD?
DAY= (message ok)
DAY?
DAY? (received ok,
but invalid arguments
found)
DAY* (message ok,
but not permitted in
current mode
TIM= (message ok)
TIM?
TIM? (received ok,
but invalid arguments
found)
TIM* (message ok,
but not permitted in
current mode
CAE= (message ok)
N/A
Response to
query (target
to controller)
DAC=xxxx
where xxxx is a
value between
0000 and 4095
N/A
ERD=xxx
where xxx is a
value between 0
and 255
DAY=xxxxxx
(same format as
command
arguments)
TIM=xxxxxx
(same format as
command
arguments)
N/A
Rev. 1.3
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