TMQAMasi
Digital QAM Modulator
969 Horsham Road lHorsham, Pennsylvania 19044 USA l Phone: 215-675-2053 Fax: 215-675-7543 linfo@tonercable.com
The TMQAMasi modulator is a professional quality, modular, digital headend component designed to provide optimum performance with minimized rack space requirements. This model accepts an MPEG-2 transport stream (with or without scrambling),
adds the desired Forward Error Correction (FEC), and outputs an IF signal at 44 MHz
modulated by the input data stream using Quadrature Amplitude Modulation (QAM).
The modulation method selected can be 16QAM, 32 QAM, 64QAM, 128QAM or
256QAM. This IF signal would normally be input to a Drake Digital upconverter to
translate it to the desired operating channel frequency.
Features
• Convenient front panel buttons and display allow easy setup of operating parameters.
• Forward error correction encoding supports DVB or Digicipher II® modes.
• Provides automatic or fixed clock modes.
• Built-In PRBS test mode.
• Null packet stuffing is provided as needed in the internal fixed clock mode.
• Designed to interface with Drake Digital DUC550 or DUC860 up converters.
• Made in the U.S.A.
TMQAMasi Digital QAM Modulator
Shown in Rack Enclosure
Specifications Subject To Change Without Notice Rev 05-12 ©Toner Cable Equipment, Inc.
969 Horsham Road lHorsham, Pennsylvania 19044 USA l Phone: 215-675-2053 Fax: 215-675-7543 linfo@tonercable.com
Output
Output Frequency: 44 MHz
Output Level: +30 dBmV
Output Impedance: 75 Ohms
Spurious: -55 dBc
MER: 38 dB minimum
Modulation
Mode: 16, 32, 64, 128, 256 QAM
Symbol Rate: 7.0 Msymbols/s Max
Excess Bandwidth: 15% (ITU-A), 18% (ITU-B) programmable
Forward Error Correction Encoding
FEC Modes: DVB/DAVIC (ITU-T J.83 Annex A)
Digicipher® II (ITU-T J.83 Annex B)
Input
Transport Stream: TMQAMasi: Serial Input according to DVB ASI specifications
Connector: TMQAMasi: BNC, 75 Ohms.
General
DC Power Required: 5 VDC
TMQAMasi: 500 ma
Size: 2.06" W x 3.5" H x 9.25" D
(5.23cm W x 8.9 cm H x 23.5 cm D)
Weight: 1 lb. 2 oz. (0.51 Kg.)
Specifications
TMQAMasi
Digital QAM Modulator
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