QAM Transcoder Module with Back-lit LCD Display Panel
Model: QTM-HD PLUS
Modular Design Allows One to Eight Transcoder Modules in a Chassis Utilizing 3 Rack Spaces
Fully Agile Output Frequency Range of 54 to 860 MHz
Back-Lit LCD Display Panel with Front Panel Accessible Push Button Controls Provides Access to All Vital Unit Information and Makes Set-Up and Troubleshooting A Breeze
Design Modularity Provides the Ability to Field Replace Any Module in the Unlikely Event of a Failure
Off-site Remote Operation and Control Including Digital Adjustment of the QAMRF Output Level with High Performance QCentral Computer Software or over the Internet with Headend Web Server
QAM transcoder module with back-lit LCD display panel, High Definition Plus, 8PSK/QPSK input and 256 and 1024 QAM capable output. It incorporates a scalable modular design that allows from one to eight transcoder module units as well as a single combination power supply and control module to be added, removed or swapped at any time in the 3 rack high chassis. The QT Series transcoder modules are compatible with DVB satellite signals (ITU-T J.83 Annex A) from EchoStar’s DISH Network and Bell Canada’s ExpressVu as well as DigiCipher II satellite signals (ITU-T J.83 Annex B) from Comcast Media Center’s and Shaw Broadcast Service’s HITS QT and QT Plus programs. Several module types are available to permit the reception of QPSK based signals for SD (standard definition) and 8PSK based signals for HD (high definition) as well as Null Packet processing required for various transponders. The modules are housed in a custom designed chassis intended to accommodate from one to eight different modules as well as specially designed chassis mountable splitters and combiners to make wiring simple and painless. Control of the transcoder units is easily accomplished with a common power supply and control unit via operator selection from the front panel push button controls and back-lit LCD panel. This module interfaces to any of the QAM transcoder modules through a simple 12-pin connector and cable. The control module’s brain is a flash upgradeable microprocessor to ensure support for any future development. Support for redundant back-up or ‘standby’ power is also built into every QT power and control module. This is easily added at any time for an operator by interfacing to the optional standby power supply unit. Plus, the optional Headend Web Server provides the ability to remotely control and monitor any of the transcoder modules over the Internet – this makes turning off a problem unit and reprogramming a live spare a quick fix preventing an immediate truck roll.
Modular Design Allows One to Eight Transcoder Modules in a Chassis Utilizing 3 Rack Spaces
Fully Agile Output Frequency Range of 54 to 860 MHz
Back-Lit LCD Display Panel with Front Panel Accessible Push Button Controls Provides Access to All Vital Unit Information and Makes Set-Up and Troubleshooting A Breeze
Design Modularity Provides the Ability to Field Replace Any Module in the Unlikely Event of a Failure
Off-site Remote Operation and Control Including Digital Adjustment of the QAMRF Output Level with High Performance QCentral Computer Software or over the Internet with Headend Web Server
Optional Redundant/Standby Power Support Capability Built in to Every Unit
QTM-HD Module Available for Support of High DefinitionProgramming Using 8PSK Modulation
QTM-HD Plus Module available for support of High Definitionprogramming using 8PSK and 512 or 1024 QAM
QTM-HD-NPU Module available for support of High Definitionprogramming using 8PSK, 256 QAM and requiring null packet processing
Spec Sheet available - Yes
Operating Temperature (Maximum):
122 F
Operating Temperature (Minimum):
32 F
AC Voltage:
265 Volts
Input Frequency Range:
950 to 2150 MHz Agile
Bandwidth:
up to 36 MHz
Symbol rate:
2 to 45 Mbps
Input Impedance:
75 ohms
Return Loss:
8 dB minimum
Output Frequency Range:
54 to 860 MHz Agile (CATV 2-135)
