双DVB-S至DVB-T调制器DT-202（UHF组合输出）

DVB-S FI Input

Type: 2 DVB-S FI independent inputs

Connectors: 75 Ω Type- F, Female

Frequency range: From 950 MHz to 2150 MHz

Input level: 40 – 110 dBμV

Information: MER of the input signal

LNB Power supply

Voltage: OFF, 13 V and 18 V (±1 V)

Current: < 400 mA

22 kHz signal: ON, OFF

Voltage: 0.65 V ± 0.35 V

Frequency: 22 kHz ± 4 kHz

DVB-S Parameters (input)

Symbol Rate: 2 – 45 Mbauds

Roll off: 0.35

Code Rate: Automatic (1/2, 2/3, 3/4, 5/6 or 7/8)

Spectral Inversion: Automatic (ON, OFF)

DVB-T Parameters (Output)

Carriers: 2k / 8k

Constellation: QPSK, 16-QAM, 64-QAM

Channel bandwith: 7 MHz, 8 MHz

Guard Interval: 1/4, 1/8, 1/16, 1/32

Code Rate: 1/2, 2/3, 3/4, 5/6, 7/8

Spectral: Inversion ON, OFF

RF Output (DVB-T)

Type: 2 DVB-T independent combined multiplexes

Connector: BNC female connector, 50 Ω impedance

Frequency Range: From 474 to 875 MHz, in 1Hz step (see options for output in VHF band)

Power level: (average) Aprox. 85 dBμV without attenuation

Variable attenuation: from 0 to 30 dB (in 1 dB step)

Frequency stability: 10 ppm

MER >36 dB from 650 MHz to 860 MHz, >38 dB from 474 MHz to 650 MHz

Phase noise: SSB -87 dBc/Hz @ 2kHz