beautypg.com

Transmit power, Modulated output shape, Spurious emissions – Comtech EF Data C5 User Manual

Page 42

background image

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.

This manual is related to the following products: