Audio Video RF Modulator

Audio Video RF Modulator: 1. Combined medium frequency input and out interface. 2. Micro CPU control, 2 bits LED display.

Audio Video RF Modulator:

Functions and Features:

1. Combined medium frequency input and out interface;

2. Micro CPU control, 2 bits LED display, front board operation, easy use;

3. CPU control high frequency phase locked loop local oscillation circuit, no frequency-deviation or drift at all;

4. Initiate medium frequency is generated directly by the phase locked loop circuit not mixing frequency, accompanying sound, thus the medium frequency image frequency and the harmonic component are reduced to the lowest level.

5. Applicable range from 48 to 860MHZ;

6. Microcomputer self-diagnosis, erro code display, easy maintenance.

7. SAWF ensures the idle component and adjacent channel sideband component of the output signal to be smallest;

8. Adjustable A/V ratio, video modulation index (VIDEO), radio strength (SOUND), RF output level (RF OUT), easy use.

Technical Data

Item	Parameter
Vision Carrier Max Output Level	108dBuV
Out-band Rejection	>65dB
Adjacent Channel Rejection(fp=1.25MHz)	>45dB
Output Impedance	75Ω
RF Output Return Loss	>14dB
Frequency Accuracy	±5KHz
Output Level Setting	20dB
Video Modulation Index	87.5%
Video Frequency Response (f=30Hz~5.5MHz)	<1.0dB
Video SNR	S/N>53dB
Differential Gain	DG <3%
Differential Phase	DP <3°
Color/Bright Delay Inequality	Δτ<40nS
Image Sound Carrier Frequency Distance	6.50MHz±1.0KHz
V/A Carrier Power Ratio	10~20dB Continuously Adjustable
Max Accompanying Sound Frequency Deviation	50KHz
Accompanying Sound Frequency Response (f=40Hz~15KHz)	±1.5dB
Accompanying Sound SNR(f=1KHz)	>55dB
Accompanying Sound Distortion Factor	1.0%
Power Supply	220V.AC
Figure Size	19(W) × 7.5(D) × 1.75(H)INCH

Audio Video RF Modulator