Newtec M6100 - Page 195

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Features Descriptions M6100 Broadcast Satellite Modulator
Parameter Description
Calibration Traffic Source • Internal test traffic (When using this mode, the live
traffic is interrupted and a PRBS is started to perform
the calibration.)
• Live Traffic (When using this mode, the live traffic is
not interrupted to perform the calibration.)
Modulator Power • Auto modulator power
The modulator systematically changes the output
power to search for the optimal power. Note that
output power will not exceed the Maximum Modulator
Power.
• Fixed Modulator Power
The modulator power used is fixed and defined under
modulator (output level).
Maximum Modulator Power 1. Enter the Maximum Modulator Power, the range is between
-35dBm and 10dBm.
The following parameters should be taken into account:
– Highest level whereby measured C/D is >11dB
and DEMOD is locked.
(PRBS could be used to be certain that data is
present in the carrier)
– Highest level that is allowed by the uplink HPA.
verify that spectral regrowth remains under
-30dBc
– Lowest OBO (Output Back Off) and Highest
Downlink EIRP (Effictive Isotropic Radiated Power)
that is allowed by the Satellite Operator
The Satellite operator will verify this
during line up!
2. This value is not applicable incase the Fixed Modulator
Power is used.
Demodulator type • External demodulator:
– RMCP Demodulator (select this type when working
with equipment such as EL910. When this is
selected, RMCP commands are used to
communicate with this type of device.)
– Remote Equalink Client, in this case the remote
device is a M6 type demodulator.
• Internal demodulator:
– Local S2-EXT Demodulator, in this case you are
calibrating with the wideband demodulator inside
the modulating device. For more information refer
to DeviceIdentification.onpage91
Note: When using this it is advised to add noise in