Modem
Reference Manual for EL470 IP Satellite Modem
Command
MoOutputEnable
Modulator board Tx
Modulator board Tx
Location
/Modem/Control/Modulation/Main
Only applicable for L-band modulators.
Description
Configuration command to enable or disable the modulator output signal.
The transmission is switched-off upon detection of a general device alarm
of the modulator board. The general device alarm is the result of a OR-
function of the incompatibility, external 10 MHz reference, external 10 MHz
reference PLL and synthesizer lock alarm. When the general device alarm
is resolved, transmission is switched back on.
The following commands which modify the transmitted signal and its
spectrum disable the transmission:
•
interface rate,
•
symbol rate,
•
Roll-off Factor,
•
modulation standard
•
output frequency.
After such a change, the operator has to inspect the generated signal and
then re-enable the transmit to go on-air. The operator requested transmit
control state can be saved in the default boot configuration stored in
memory slot 0 so that after (accidental) reboot the saved transmitter state
is activated.
Always Enable
:
•
This parameter is used to keep transmitting when changes are
made to the commands mentioned above.
•
This command should only be used by a qualified operator who is
fully capable and responsible for preventing unwanted
transmissions.
RMCP
Command
TTm
Access
Normal user : RW
Expert user : RW
SNMP
Table
ntcDevsMod01ModulatorEntry
Command
ntcDevsMod01MoOutputEnable
OID
1.3.6.1.4.1.5835.3.1.3.1.28.1.1
Values
Factory Default
disable
Enumeration
Value
Disabled
Enabled
Always Enabled
0
1
2
Command
MoCaMod
Carrier modulation
Carrier modulation
Location
/Modem/Control/Modulation/Main
Description
Configuration command to control carrier modulation:
•
Pure carrier
: Non-modulated output signal.
•
Modulation on
: Operational modulated carrier signal.
•
Test modulation
CLK/n: Carrier modulated by a rotating vector with
a period of baudrate/n, results in a single spectral line at +CLK/n
offset from carrier. This mode is used for calibration and verification
version 3.1
78
SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS