Modem
Reference Manual for EL470 IP Satellite Modem
Command
MoBbNcoMode
Baseband NCO
programming mode
BB NCO mode
Location
/Modem/Test/Modulation
Description
Configuration of the baseband network clock oscillator programming
mode. The test generator on the modulator board is clocked by an
independent baseband network clock oscillator. The output rate of this
network clock oscillator is directly programmable via this command.
Although total independent programming of the rate is required for factory
testing, from a standard operator viewpoint it is more desirable that the
test generator baseband network clock oscillator rate is automatically
programmed to a value that is compatible to other modulator settings.
This mode command selects the desired behaviour:
•
Automatic
: Upon selection of frame type, modcod, symbol rate and
test generator timing mode, the baseband network clock oscillator is
automatically programmed to a compatible value for proper
operation. Remark: In case that MoTgTimMode is set to free running
mode, the network clock oscillator is programmed to the calculated
interface rate. In case that MoTgTimMode is set to throttled mode,
the network clock oscillator is running at the maximum rate.
•
Manual:
In this mode, the baseband network clock oscillator rate is
only affected by the MoBbNcoRate command and it is the
responsibility of the operator to select a compatible value.
RMCP
Command
BNM
Access
Normal user : no access
Expert user : RW
SNMP
Table
ntcDevsMod01ModulatorEntry
Command
ntcDevsMod01MoBbNcoMode
OID
1.3.6.1.4.1.5835.3.1.3.1.85.1.1
Values
Factory Default
auto
Enumeration
Value
Auto
Man
0
1
Command
MoBbNcoRate
Testgenerator output
bitrate
Testgen output rate
Location
/Modem/Test/Modulation
Only valid for DVB-S2 modes.
Description
Configuration of the test generator output bitrate when the input clock
selection is set to internal. The internal test generator clock is generated
by a 32-bit network clock oscillator clocked at the 120 MHz master clock.
Remark: When the input clock selection is set to external, the test
generator is clocked with the interface clock.
RMCP
Command
tgr
Access
Normal user : RW
Expert user : RW
SNMP
Table
ntcDevsMod01ModulatorEntry
Command
ntcDevsMod01MoBbNcoRate
OID
1.3.6.1.4.1.5835.3.1.3.1.58.1.1
Values
GUI Unit
Mbps
Cmd Unit
Factory Default (CU)
bps
100
Expert Range (CU)
55000 .. 110000000
version 3.1
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