Microyal Model MDH-3000P / -C / -T

Professional DVB-S QPSK Digital CI Decoder

MDH-3000P/-C/-T professional digital CI decoder (with 2 ASI TS input/output, factory optional QAM or COFDM Input) supports Common Interface systems, user may insert up to two PCMCIA CI modules to receive various encrypted DVB-S/-C/-T or DVB-ASI programs, including Conax, CryptoWorks, Irdeto, NDS, Mediaguard, SECA, Nagravision and Viaccess. It provides two signal input options, one is QPSK/QAM/COFDM which receiving DVB-S/-C/-T signal from, the other is ASI which could come from another digital CATV headend instrument (for example, another MDH-3000P/-C/-T). The input encrypted satellite or ASI signal can be decrypted to free TS stream signal and remultiplex into the same TS stream, then output with its ASI interface. Because of one ASI input and two ASI outputs, the un-decrypted programs could loop through to another MDH-3000P/-C/-T for further decrypting. Programs in an encrypted carrier/transponder can be all decrypted with a daisy chain of multiple MDH-3000P/-C/-Ts. In addition, MDH-3000P/C/-T can output analogue video and audio signals, BNC CVBS video and balance stereo audio are available on the rear panel. RS-232 interface realizes remote monitoring and software upgrade. It supports both burst mode and byte mode TS input. MDH-3000P is best for professional systems such as CATV headend signal sources, DVB-S signal decryption and monitoring. Microyal's MDH-3000P is 19" by 1U rack mountable with touch button interfaces on the front panel. It is your best choice of professional CI decoder with ASI transport stream input and outputs for your analogue and digital CATV headend applications. The input signal of DVB-T comes from air, the input signal of DVB-C comes from CATV network or CATV headend.


  • Fully comply with DVB-S and MPEG-2 standards
  • Common Interface with 2 slots (PCMCIA) that can support the encrypted systems of Conax, CryptoWorks, Irdeto, Mediaguard, Nagravision, SECA, NDS and Viaccess
  • Switchable between the two slots of PCMCIA to output analogue Video/Audio signal
  • Two signal input options, one is QPSK which receiving DVB-S signal from satellite, the other is ASI which could come from another digital CATV headend instrument (for example, another MDH-3000P)
  • One ASI input and two ASI outputs, the un-decrypted programs could loop through to another MDH-3000P for further decrypting
  • BNC CVBS video and balance stereo audio XRL are available on the rear panel
  • Transparent decryption ASI output or non-decryption output switch
  • LED display, function touch button on front panel, user friendly operation interface
  • Auto network or transponder search function and code stream information update
  • Store up to 2000 channels
  • Video PID and audio PID setup
  • Automatic reserved channel after being moved
  • Support OSD teletext (DVB ETS 300 706) and caption function
  • 256 color screen display, support various languages, including English, French, German, Spanish, Italian, Chinese and Arabic etc.
  • EPG function, support PIG (Picture in Graphics) display
  • Automatic PAL to NTSC conversion and vice-versa
  • Software upgrade via RS-232 interface (PC to MDH-3000P or MDH-3000P to MDH-3000P)


QPSK Demodulation & FEC Parameters (Comply with DVB-SMPEG2ETSI 300421 Standards)
Input Frequency Range

C & Ku Band, 950~2150MHz

Input Level -25dBm~-65dBm
Input Impendance 75Ω, F type
Symbol Rate 2~45Mb/s (SCPC or MCPC)
Rolling Off Factor 0.20 or 0.35
Punctured Rates 1/2, 2/3, 3/4, 5/6, 6/7,7/8
Reeds Salomon Decoding 204, 188, T = 8 & I=12

DVB-C QAM Demodulation

Connector IEC, Female (7/8MHz) or F Female (6MHz) Input
Demodulation 16/32/64/128/256 QAM
Tuner Bandwidth 6 or 7 or 8 MHz (factory set)
FEC Decoder RS(204,188)
Frequency Range 50860MHz
Digital Signal Input Level -1515dBmV
Input Impedance 75Ω, F-type

DVB-T COFDM Demodulation

Connector IEC, Female (7/8MHz) or F Female (6MHz) Input
1 IF Loop through Yes
Frequency Range 470-862MHz174-230MHz
Input Impedance 75Ω unbalanced
Digital Signal Input Level -20 to -75dBmV
Demodulation COFDM
Constellation QPSK, 16-QAM, 64-QAM
Tuner Bandwidth 8 MHz
FFT mode 2K/8K
Guard Interval 1/4, 1/8, 1/16, 1/32, off
FEC Code Rate 1/2, 2/3, 3/4, 5/6 and 7/8

Central Control Microprocessor

Microprocessor Chip STi5518
Clock Frequency 81MHz
SDRAM memory 8Mbyte
FLASH memory 2Mbyte

Front Panel

LED Display Display current receiving channel number
CI PCMCIA Module Slot 2 X JEIDA 4.0 PCMCIA type II, Fully Support Irdeto, Viaccess, NDS and other
Common Interface system
3 Indicator light Display 1 Power Indicator,1 Satellite Signal LockingLOCKand 1 Remote ControlREMOTELOCKIt illuminates when satellite signal lock REMOTE RCU is available when it illuminates

Rear Panel


LNB Input and Output

Satellite signal input, Satellite signal loop through output
Power Supply  AC 90~260V, 50~60Hz, 25W

9-pin D-sub male, for software upgrade and remote monitor Maximum of 625Kbps

Audio XRL Balance Output

RCA*2(Left and Right Track) Interface

Audio output impedance 600ohm
Audio output level 0.6V rms/2dB into 10Kohm

BNC Video Output

BNC*1 Interface  
Video output interface 75Ω
Video output bandwidth 8MHz
Sync. amplitude tolerance(300mV) 5%

Burst amplitude tolerance (300mV)



Audio RCA*1Left & RightConnector, MPEG-1 layer I and II, Musiacam Compression Format
Amplitude frequency response 2dB
Audio dynamic range >80dB
Audio output impedance 680Ω
Audio harmonic distortion ratio <0.2%
Audio S/N rate >80dB
L-R level difference 1dB

Video CVBS RCA*2 Connector, MPEG-2 Decompression

Amplitude frequency response 5%
Video format 4:3, 16:9; 720X576@PAL; 720X480 @NTSC
Video buffer 64Mbps SDRAM
Video data rate 15Mbps ((Max. burst rate228Mbps)
Video output level 1Vp-p0.1V
Video S/N >54dB

DVB-ASI Serial Data Input

Interface 75ΩBNC*1 female
Data Transmission Rate 270Mb/s
Data Mode Byte
Packet Length 188 or 204
Operating Temperature 0~40
Storage Temperature -20~70
Humidity  <85%
Power Supply AC 90~260V,50Hz~60Hz,25W
Dimensions 483mm440mm44mm
Weight 2.6Kg