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Drake Digital Multiplexing QAM Modulator (MQM6000L)

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Drake Digital Multiplexing QAM Modulator (MQM6000L)

Brand: Drake           P\N: MQM6000L          

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Availability: Discontinued

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Drake The R.L. Drake model MQM6000L is a professional quality, digital headend modulator that accepts one to six single or multiprogram transport streams via six BNC, Asynchronous Serial Input (ASI) connectors. When six streams are input, the MQM6000L then multiplexes one program from each input and applies the result to the QAM modulator and up converter for output onto any desired CATV or off-air output channel between 54 and 1002 MHz. A program filter is provided to allow selection of the desired program from each input stream. Other programs in the incoming streams are dropped.


  • Front panel display and buttons allow easy setup and monitoring of operatingmode and parameters.

  • PCR correction is performed when necessary.

  • RS232 remote control and monitoring capability with the included Drake DigitalHeadend Control Software.

  • High MER output signal quality.

  • 1U tall package with internal power supply conserves rack space.

  • +40 dBmV output, QAM modulator and very low phase noise agile upconverter arebuilt in.

  • Output is agile on CATV or broadcast channels from 54 to 1002 MHz.

  • Six ASI Inputs.

  • TS Multiplexer for MPEG2 transport streams. Programs may be MPEG2 or H.264.

  • ATSC PSIP is supported.

  • MPEG program and minor channel number offsetting when multiplexing.

  • Major channel number pass through or remarking is selectable when multiplexing.

  • Rewriting of the MPEG tables is provided when two input streams are multiplexed.


Technical Data And Specifications

ASI Inputs
Inputs: Six Asynchronous Serial Inputs (ASI) 270 Mbps ASI clock rate with maximum transport stream of 40 Mbps at each input MPTS or SPTS
QAM Modulator
Modulation Modes: 16, 32, 64, 128, 256, 512, 1024 QAM Refer to manual for QAM / FEC combinations
Symbol Rate: 1 to 7 Msps
Forward Error Correction (FEC): ITU - A (DVB) or ITU - B (Digicipher® II)
I / Q Phase Error < 1 degree
Carrier Suppression 45 dB
Channel Amplitude Error < 1 dB
MER: > 38 dB with blind equalizer
Null Packet Processing
The MQM6000L utilizes a fixed output clock mode
UpConverter RF Output
Output Frequency Range: 54 to 1002 MHz
Channel Plan: Standard CATV, HRC, IRC or Broadcast
Frequency Stability: ± 5 ppm
I / Q Phase Error < 1 degree
Maximum Output Level: + 40 dBmV minimum, adjustable downward.
Output Level Accuracy: ± 1 dB
Output Impedance: 75 Ohms with return loss better than 14 dB (within output filter passband)
Spurious Outputs: - 60 dBc from 40 to 1000 MHz
Broadband Noise: - 75 dBc
Phase Noise: - 101 dBc @ 10 kHz offset
RS232 Control
Data Link: 2400, 4800, 9600 or 19200 baud interface via serial cable
RS232 Input: DB9 connector for connection to modem, PC or Drake SCTeci Ethernet controller
RS232 Output: DB9 connector for connection to additional units
Power: 90 - 132 VAC, 60 Hz, 15 W maximum
Weight: 9 lb
Size: 19" (48.3 cm) W x 1.75" (4.45 cm) H x 11.5" (29.2 cm) D
Operating Temperature: 0° C (32° F) to 50° C (122° F)
Specifications, price, and availability are subject to change without notice or obligation.


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