Transmit power, Modulated output shape, Spurious emissions – Comtech EF Data C5 User Manual
Page 42
Specifications
C5/K1/K3 Integrated Satellite Terminal System
2–8
Rev. 0
2.1.5.5 Transmit
Power
( The transmit power is operator-selectable from +25 to +38 dBm, in 0.1 dB steps.
( The maximum drift due to temperature change is %
0.75 dB. (The ALC feature of
the ODU is used.)
( The transmit power accuracy is %
2.0 dB at +25 dBm and
%
1.5 dB at +38 dBm.
( The transmit output is flat within 0.2 dB over any 1 MHz segment.
2.1.5.6
Modulated Output Shape
The terminal meets the following transmit output spectral mask specifications, subject to
the limitations of a 50 dB S/N ratio. The desired mask is selectable from the front panel or
remotely.
( Closed Network (EFData/Comstream)
( Closed Network (Fairchild compatible)
2.1.5.7 Spurious
Emissions
Spurious emissions are measured at the C-Band ODU output Type N female connector.
The measurement is done with the carrier ON, in continuous mode, and modulated by the
correct data/clock signal.
( Spurious emissions measured in a 3 kHz bandwidth at the transmit output are
" -15 dBm from 3.7 to 8 GHz, excluding a band % 1 MHz from the carrier.
( Spurious emissions measured in a 3 kHz bandwidth from 3.7 to 4.2 GHz are
" -100 dBm.
( The carrier is suppressed to " -35 dBc in normal operating mode.
( The undesired sidebands of the modulated signal is suppressed to " -35 dBc.
( The harmonics of the modulated signal is ' -20 dBc.