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RF
Modulator
RF
Modulator Model RFM313 is a Compact & Light weight design for NTSC
system. The device could be mounted directly onto the equipment mother
board. It is a multi-application device for such as VCR, Laser disc,
Satellite Receiver & CATV terminal box etc.
Features
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r Excellent video & audio performance
r NTSC-M system output
r Compact and reliable
r Output channel : VHF 3-4 (EIA) switchable
output
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F Female connector for RF ant.
Input & TV out
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Technical specification
VIDEO
SECTION
Video input level :
1 Vp-p
Video modulation level (APL 50%) : 75%
Video input impedance :
1kW
Video S/N :52dB
AUDIO SECTION
Input level :
1 Vp-p 100% modulation at 1 KHz
Modulation factor :
100% mod. ±25 KHz
Input impedance :
10kW
Total harmonic distortion : 2%
Audio S/N ratio :
48dB min.
RF SECTION
Output channel : CH.3-4 (EIA) VHF 61.25MHz,
67.25MHz ±100KHz
Output level :
66dbmV ±5
Difference in output level :
-14db ±3
(Vision to sound)
Inter
carrier frequency accuracy :
4.5MHz ±10KHz (System M)
Input & Output Impedance :
75W
DC POWER
Supply voltage :
5Vd-c
Current consumption : 40mA max.
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