Technical Specification
Item Specification
Spectrum sense Selectable Normal/Inverted
Transmission modes Modulation on/off
Carrier on/off
Carrier frequency 50 -180 MHz, in 1 kHz steps
Carrier frequency stability < ±0.02 ppm versus temperature
< ±0.0002 ppm/day ageing after 30 days continuous operation
< ±0.05 ppm/year ageing after 30 days continuous operation
Carrier frequency initial setting
accuracy (ex factory)
±0.1 ppm max
Carrier suppression >40 dB
Carrier ON/OFF ratio >60 dB
Phase noise < –46 dBc at 10 Hz offset
< –66 dBc at 100 Hz offset
< –76 dBc at 1 kHz offset
< –86 dBc at 10 kHz offset
< –96 dBc at 100 kHz offset
< –120 dBc at 1 MHz offset
Spurious outputs, (modulated
carrier)
< –60 dBc/4 kHz over the frequency range 0 – 500 MHz but excluding the
frequency range of the wanted signal (equal to ±1.06 x Symbol Rate about
the carrier frequency, as defined by the spectrum mask Figure A.1 in
EN 300 421)
Spurious outputs, (unmodulated
carrier)
< –50 dBc
< –55 dBc typical
0 < f < 500 MHz, each component
Noise floor (N
0
/C) < –120 dBc/Hz
Monitor output power level
–30 dB ±3 dB relative to IF Main output (Main output terminated in 75 Ω)
1 Applies to DVB-S2
2 Applies to DVB-DSNG
3 Applies to DVB-S
4 Applies to DVB-S2X
L-band Output
Table B.27 Satellite Modulator L-band Output Specification
Item Specification
Safety status SELV
Connector designation L-BAND OUT MAIN
Connector type SMA female
Output impedance 50 Ω
Return loss >14 dB, 950 – 2150 MHz
Output power -40 dBm to +5 dBm in 0.1 dB steps
Output Power Ramp Rate 16 dB/s over operational power level range
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