Toner Cable SDQPSK User Manual
Telephone: Nationwide: Fax: E-mail: Internet:
7/01
Drake Digital Headend Products
215-675-2053 800-523-5947 215-675-7543 info@tonercable.com http://www.tonercable.com
969 Horsham Road
Horsham, Pennsylvania 19044 USA
The Drake Digital system features a flexible, modular approach for the
reception and redistribution of Digital signals for CATV and Private Cable.
The units can receive and decode or transcode all the MPEG signals such
as QPSK, 8-VSB, and ATSC for retransmission in QAM or analog format.
TMQAM
QAM Modulator
The TMQAM QAM Modulator is a professional quality,
modular, digital, headend component designed to provide
optimum performance with minimized rack space requirements.
The modulator accepts a MPEG2 transport stream input in
the SPI format and is capable of providing a QAM output with
16, 32, 64, 128 or 256 constellation points.
•
Convenient front panel buttons and
display allow easy setup of
operating parameters.
•
Forward error correction encoding. DVB
or Digicipher II® modes are supported.
•
Provides Auto or Fixed clock modes.
•
Built-in PRBS test mode.
•
Null Packet Stuffing is provided as
needed in the internal fixed clock mode.
•
RF Output is +30 dBmV.
•
Designed for use with Drake DUC550
or DUC860 upconverters.
•
Fits into the popular DRMM12
rack mount.
OUTPUT
Output Frequency: 44 MHz.
Output Level: +30 dBmV.
Output Impedance: 75 Ohms.
Spurious: -55 dBc.
MODULATION
Mode: 16, 32, 64, 128, 256 QAM.
Symbol Rate: 7.0 Msymbols/s Max.
Excess Bandwidth: 15% (ITU-A), 18% (ITU-B).
FEC ENCODING
FEC Modes: DVB/DAVIC (ITU-TJ.83 Annex A),
Digicipher® II (ITU-T J.83 Annex B).
INPUT
Transport Stream: Parallel Input according to DVB SPI
(Synchronous Parallel Interface).
Connector: DB25 Female.
Levels: LVDS (Low Voltage Differential Signaling).
DC Power
Required: 5 VDC @ 380 mA.
Size: 2.06'' W x 3.5'' H x 9.25'' D
(5.23 cm W x 8.9 cm H x 23.5 cm D).
Weight: 1 lb. 10 oz. (0.49 Kg).
SPECIFICATIONS
SDQPSK
Digital Satellite Demodulator
The SDQPSK Digital Satellite Demodulator is a professional quality,
modular, digital, headend component designed to provide optimum
performance with minimized rack space requirements. This demodulator receives a PSK modulated signal (usually it will be QPSK) in
the L Band range of 950-2150 MHz and demodulates the signal
providing an MPEG-2 transport stream digital output. The SDQPSK
easily interfaces to the Drake QAM modulator or SD/HD decoder
modules via a standard 25 conductor data cable (SPI interface).
FEATURES
•
Convenient front panel buttons and
display allow easy setup of
operating parameters.
•
Forward error correction encoding.
DVB or Digicipher II® modes are
supported.
•
Auto Viterbi Scan Mode.
•
Adjustable LNB DC supply and
22 kHz LNB switch control tone
are provided.
•
Fits into the popular DRMM12
rack mount.
DDC806
Digital Downconverter
The DDC806 is a low noise downconverter designed for translating digital signals from their off-air or CATV channel to a 44 MHz IF output. The
output of the DDC806 can be connected to a DUC series upconverter to
place the digital signal on a new output channel. the DDC806 may be
used with VSB, QAM, or QPSK digital signals. VSB signals up to
16VSB and QAM signals up to 256QAM may be translated. The channel bandwidth is fixed at 6 MHz. The DDC806 provides low noise figure
and low phase noise as well as a flat passband to minimize signal dete-
RF TUNER
Receiving Frequency: 950 - 2150 MHz.
Tuning Increment: 1 MHz.
Acquisition Range: ±3.5 MHz minimum.
Input Level: -65 to -25 dBm.
Input Impedance: 75 Ohms, return loss of 10 dB typical.
Input Connector: Type F female.
I/Q Level Imbalance: ±1 dB.
I/Q Phase Error: ±3 Degrees maximum.
DEMODULATION
Mode: BPSK, QPSK, OQPSK.
Forward Error Correction:
ITu-TJ.83 Annex A(DVB) or IT
u-TJ.83 Annex B (Digicpher
II).
DVB Viterbi Modes: 1/2, 2/3, 3/4, 5/6, 6/7, 7/8, Scan.
DC
II Viterbi Modes: Auto Scan, 5/11, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 7/8.
Input Date Rate: 2 to 45 Msps.
OUTPUT
Transport Stream: Parallel Output according to DVB SPI,
(Synchronous Parallel Interface).
Connector: DB25 Female.
Levels: LVDS, (Low Voltage Differential Signaling).
LNB
Supply Voltage: Programmable, 13 to 18 VDC in 1 V increments or Off.
Supply Current: 300 mAMax.
22 KHz Tone: Programmable ON or OFF.
GENERAL
Size: 2.06'' W x 3.5'' H x 9.25'' D
(5.23 cm W x 8.9 cm H x 23.5 cm D).
Weight: 1 lb. 10 oz. (0.49 Kg).
SPECIFICATIONS
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