The WQM-860SL is a professional quality, digital headend component providing QAM TS and RF upconversion functions in a single module.

The QAM modulator then applies cable environment FEC to the transport stream and remodulates using QAM modulation to an IF QAM signal.

In RF upconverter, the IF QAM signal is SAW filtered and then upconverted to the desired output channel. Any standard CATV output channel may be selected in the range of 54 to 860 MHz. Bandpass flatness and phase noise are closely controlled in the WQM860 to ensure a high MER output signal. This ensures that the Qam modulator will not introduce a source of errors into the distribution process. Because the MPEG2 transport stream information is not modified by the QAM modulator, all encryption, authorization, and program guide information are passed on to the CATV set top box, without any changes.

Operates in DVB.
ASI signal input and a digital QAM signal output in 16/32/64/128 or 256 QAM mode.
Front panel LCD for monitoring, data display and setup.
High MER (Modulation Error Rate) ensures a low bit error rate.
Switching power supply 90VAC-260VAC, 50Hz/60Hz.
Standard 19' rack-mount for installation.
SAW filtered IF out/in loop.
RF modulation output
--- 47-862MHz output frequency agility.
--- 60dBmV output level with Hybrid module IC.
--- Output level adjustable by a 15dB range.
--- Low out-of-band noise and High VSB attenuation.
---Double PLL synthesized channel control.
Available to control multiple and daisy chain QAM modulators with our Monitoring & Control Software.

Technical Specifications