DCH-3400PR 多路音频解码器 多路音频处理器

Description

DCH – 3400PR Multi-channel Audio Decoder

Product Overview

The DCH – 3400PR multi-channel audio processor complies with MPEG – 2 (MP@ML& MP@HL) and MPEG – 4 (AVC high profile level 4.1). It features 4 TUNER IN ports, supports AVS+ decoding, as well as MPEG – 2, MPEG – 4, H.264, and H.265/HEVC decoding. It is equipped with 2 CI card slots, and the CI descrambling supports multiple conditional access systems such as Conax, Cryptoworks, Irdeto, Mediaguard, SECA, NDS, Nagra, Viaccess, and Yongxin Shibo. Adopting a unique digital decoding technology and PCMCIA interface, it can receive various encrypted satellite/ cable/ terrestrial digital TV signals by replacing different PCMCIA modules.

The DCH – 3400PR has rich input and output interfaces. It enables remote control and parameter configuration through ETHERNET network management, which is very convenient for operation. In addition, it offers 4 groups of AES plus backup outputs, 4 channels of analog balanced audio outputs, 2 channels of ASI output interfaces, and 1 channel of ASI input interface. It also supports Gigabit IP input and output.

The DCH – 3400RR, a professional – grade high – definition device, complies with MPEG – 2, MPEG – 4, H.264, H.265, and DVB standards. It provides broadcast – level sound and is a high – quality device that can be installed in a 19″ standard cabinet. It is the best choice for various digital TV front – end systems.

Product Features

• Complies with MPEG – 2 (MP@ML& MP@HL) and MPEG – 4 (AVC high profile level 4.1), and supports MPEG – 4, H.264, and H.265/HEVC decoding.
• Rich input and output interfaces, supporting 4 channels of TUNER IN, DS3 input (optional), 1 channel of ASI IN, and 2 channels of ASI outputs.
• Audio output interfaces: 4 groups of analog balanced accompaniments and 4 groups of digital AES/EBU outputs.
• Supports 2 CI card slots.
• Full – duplex mode, with a total input/output bit – rate of 300M or 64 – channel IPTV/DVB mode output at a bit – rate of 200 – 300M.
• Bit – stream processing methods include single – channel descrambling, multi – channel descrambling, PID multiplexing/filtering, PSI/SI insertion, and 204/188 transformation.
• Supports the PMT automatic update function.
• ETHERNET network management interface, supporting SNMP v2 protocol and software upgrade through the network interface.
• Supports the function of individually adjustable analog audio volume.
• Supports dual power supplies.
• Has the power – off memory function.
• Supports the USB fast upgrade function.

Technical Parameters

DVB – S/S2/ISI/S2X Input (QPSK/8PSK/16APSK/32APSK/64APSK)

• Connector: 4 British F – connectors.
• Input frequency range: 950 ∼ 2150MHz.
• Input level: – 25~ – 65dBm.
• Input impedance: 75Ω.
• Symbol rate:
  • DVB – S2X/S2:
    • QPSK 8PSK: 1 ~ 60MSps.
    • 16APSK: 1 ~ 58MSps.
    • 32APSK: 1 ~ 55MSps.
    • 64APSK: 1 ~ 34MSps.
  • DVB – S: QPSK: 1~54MSps.
• Roll – off factor:
  • DVB – S QPSK: 0.35.
  • DVB – S2 8PSK: 0.35, 0.25, 0.2.
  • DVB – S2X: 0.35, 0.25, 0.2, 0.15, 0.1, 0.05.
• Convolutional code rate:
  • DVB – S QPSK: 1/2, 2/3, 3/4, 5/6, 7/8.
  • DVB – S2 QPSK: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10.
  • DVB – S2 8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10.
  • DVB – S2X: 64800 bits FECFRAME VCM and ACM.
• LNB supply voltage: Optional among 0, 13V, 18V.
• 0/22K: Optional 0/22KHz.
• DiSEqC: DiSEqC 1.0.
• PLS: Adjustable from 0 to 262141.
• ISI: Adjustable from 1 to 255.

ABS – S Input

• Interface: 4×F connectors, 75Ω.
• Input frequency range: 950~2150MHz.
• Input level: – 25~ – 65dBm.
• Symbol rate: 2~45MSps.
• Roll – off factor: 0.2, 0.25, 0.35.
• Modulation mode: QPSK, 8PSK.
• Convolutional code rate: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 13/15, 9/10.

DVB – C QAM Demodulation

• Connector: 4 British F – connectors.
• Input symbol rate: 1～7MS/s (PAL), 1～6MS/s (NTSC).
• Demodulation mode: 16/32/64/128/256 QAM.
• Bandwidth: 6MHz or 7MH or 8MHz.
• Input frequency: 42 ~ 1002 MHz.
• Input level: 45dBuV~75dBuV.
• Input impedance: 75Ω.

DVB – T/ COFDM Demodulation (Fully Complies with DVB – T&MPEG2 International Standards)

• Connector: 4 British F – connectors.
• Modulation mode: QPSK, 16 – QAM, 64 – QAM.
• Bandwidth: 6 MHz/7MHz/8MHz.
• Carrier mode: 2K/8K.
• Protection interval: 1/4, 1/8, 1/16, 1/32 (DVB – T).
• FEC decoding rate: 1/2, 2/3, 3/4, 5/6, 7/8 (DVB – T).
• Input frequency: 174 – 230MHz (VHF), 470 – 862MHz (UHF).
• Input level: – 70～ – 20dBmV.
• Input impedance: 75Ω, British F – connectors.

DTMB Tuner Input

• Interface: 4×F connectors, 75Ω.
• Input frequency range: 44 ~ 1002 MHz.
• Input level: – 60dBm ~ – 20dBm.
• Bandwidth: 6MHz/7MHz/8MHz.
• Constellation diagram: 4QAM – NR, 4QAM, 16QAM, 32QAM, 64QAM.
• Frame header: PN420, PN595, PN945.
• Interleaving depth: 240,720.
• LDPC Code Rate: 0.4, 0.6, 0.8.

ASI Input

• Interface: 1 BNC interface.
• Standard: DVB – ASI, EN50083 – 9.
• Input bit – rate: ≤ 200Mb/s.

ASI OUT

IP OUT/IN