Sell 750MHz Professional Fixed Channel Modulator

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T21/199 Professional Fixed Channel Modulator

T-199 modulator is high performance headend equipment launched by our company. It is mainly used for djacent modulation of video and audio signals. With advanced IF PLL technology, it enjoys excellent vestigial sideband characteristic and good out band attenuation. It is the first choice product for medium-sized CATV headend equipments.

With IF modulation technology and CPU controlled PLL technology, frequency stability is high. Selected with high performance SAW filter, and cooperated with spiral band pass filter, it enjoys good out band attenuation.
With built-in independent RF power amplifier, output level is up to 110dB and more. Video modulation depth, audio deviation, A/V ratio and output level are all adjustable on front panel.
With channel number display on front panel, and added serial power supply ports on back plate, it
is easier to operate.

Item Unit Specifications
Output Frequency MHz 48.25~750
Max Output Level dB5V 113
V/A Carrier Power Ratio dB 10~30
Spurious Rejection dB 60
Freq Accuracy KHz <=5
Video Mod Depth % 87.5
Freq Response Within dB <=2
Differential Gain % <=5
Differential Phase 0 <=5
C/L Delay ns <=40
Video S/N dB >=48
Audio Dev KHz 150
Audio Freq Response dB <=1.5
Audio S/N dB >=54
Power Supply V 220110%
Temperature Range 0 0~40
Dimensions cm 48.3W20.5W4.3