WDQ-3254 is a new generation of Multi/Scram-functional 4 in 1 QAM modulator, which can receive TS from the 8
ASI interfaces, and then multiplex, scramble and 4-channel modulate. It adopts our newly developed functions
such as “Module Management”, device scrambling, and channel modulation. The flexible customization and high
expansibility can satisfy the user’s current and future DTV system requirements.
Features
Support ITU- T J.83 Annex A /B,/C modulation,
output frequence range: 54MHz~860MHz
QAM modulation: 16/32/64/128/256
Support different configurations by software
authorization
Support up to 4 simul-crypt CAS and DVB-CSA
scrambling
Support SI/PSI auto-generation and manual
uploading during re-multiplexing
Support auto-generation or manual editing of
network information, as well as local network
information sectors uploading
Adopt extra-large canche memory for both
constant and inconstant input bit stream at ASI
Support PID filtering, mapping and pass-through
Support PCR auto-correction
Output bitrate range: single channel
15.5~51.6Mbps
RF output symbole rate range: single channel
4.2~7Mbaud/s
Output electrical level range: 95dBuV~115dBuV
(8 channels, step 0.25dB)
Support gain tuning function, tuning range:
-2.5~10.5dB
Provide -20dB RF test interface
Tracking filter circuit to ensure excellent external
band suppression performance
Support working parameter import and export
Support Web-based network management, with
online upgradable embedded programs
Multi-lingual management user interface and
documentation to suit both regional and overseas
markets
Support monitoring of operation temperature &
power supplies