编码器和输入多路复用器V / A DT-504B增加四倍（输出DVB-T UHF）

DVB-S FI Input

Type: 2 DVB-S FI independent inputs

Connectors:

4 independent A/V inputs.

3 RCA-Female connectors for each input.

1 connector (yellow) Composite video.

1 connector (white) Audio L.

1 connector (red) Audio R.

Video

Format: PAL, NTSC.

Level: 1 Vpp.

Impedance: 75 Ω.

Audio

Mode: Selectable Stereo / Mono / Dual / Joint Stereo.

Level: 0.5 Vpp or 1.0 Vpp (selectable).

Impedance: 10 kΩ

Bandwidth: 20 Hz to 20 kHz

MPEG-2 Encoder

Video/Audio encoding

Format: MPEG-2.

Video Bitrate: According to DVB-T modulation parameters.

Audio bitrate: From 32 to 384 kbps selectable.

Editable parameters: Service Name, Service ID, Video PID, Audio PID, PMT PID.

Available measurements: Total bitrate.

Multiplexor

Editable parameters: Network name, NID, NID Original, TS ID.

DVB-T modulator

FFT Mode: 2k, 8k.

Channel: BW 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.

Constellation; QPSK, 16-QAM, 64-QAM.

Spectral Inv.: ON, OFF