MMDS transmitter ,MMDS system Technical parameterOutput: Specified output 30W±10% (in 50 ohm load digital average powers)
Operating frequency scope: In MMDS:2500MHz~2700MHz MUDS:470 MHz -860 MHz assigns willfully channel
Band width establishment: 6MHz, 7MHz, 8MHz
Modulation system: 64QAM either COFDM or our country digital television ground broadcast must the modulation system
Carrier frequency stability: ±500Mz
Modulation error rate (MER) ≥32dB (64QAM)
The frequency spectrum side lobe rate ≤36dB (take launches channel center frequency as datum ±4.3MHz place)
Outside the adjacent channel belt the unwanted emission ≤-65dB or ≤1MW (take launches channel center frequency
(including overtone clutter) as datum)
In belt frequency sound: ≤±1dB (take launches channel center frequency as datum)Regular service conditon
Ambient temperature: 0°C~40°CRelative humidity: ≤90%
Atmospheric pressure: 86KPa~106KPa
MMDS transmitter
