SNP-68 860MHz Adjacent Channel CATV Modulator

It's the best choice for large and medium-sized front-end OF CATV systems.

1. Description

SNP-68 Adjacent Channel Modulators are headend equipment for adjacent channel modulation of image and acoustical signals. Medium frequency treatment technique and phase locked loop technology are adopted to improve frequency stability. It is characterized by good out-of-band rejection and excellent vestigial sideband. It's the best choice for large and medium-sized front-end OF CATV systems..

2. Feature

1. Medium frequency treatment technique and dual-phase locked loop technology for CPU control is adopted to improve frequency stability.

2. High performance Surface Acoustic Wave Filters and Spiral Bandpass Filters are adopted to improve out-of-band rejection.

3. Independent RF Power Amplifiers are inside. The output level is up to over 110dBμV.

4. The vision signal modulation, audio deviation, A/V ratio and output level can be adjusted on the front panel.

5. It's easier to operate, because of the digital channel number of front panel and the uplink of back panel.

3. Technique Parameter

Item	Unit	Technique Parameter
RF Parameter
Frequency Range	MHz	47~860
Output Level	dBμV	110±(20 dBm Adjustable)
Output Impedance	Ω	75
V/A Power Ratio	dB	10~20 Continuously Adjustable
Vision Mid Frequency	MHz	38
Frequency Accuracy	KHz	≤ 5
Sideband Rejection	dB	≥ 62
Output Return Loss	dB	≥ 12
Video Parameter
Input Level	Vp-p	0.7~1.4
Modulation	%	87.5
Differential Gain	%	≤ 3
Differential Phase	°	≤ 3
S/N Ratio	dB	≥ 51
C/L Delay	ns	≤ 40
Frequency Response	dB	±1.5
Audio Parameter
Input Level	Vp-p	0.7~1.4
Input Impedance	Ω	600 (Unbalance)
Pre-emphasis	μs	50
Distortion	%	≤ 1.5
Frequency Response	B	±2 (50Hz~15KHz)
Audio to Noise ratio	dB	≥ 55
General Characteristic
Supply Voltage	V	~220V±15%(50Hz)
Power Consumption	VA	8
Dimension	mm	483(L)x 200(W)x 44(H)

4. Ordering Guide

Please sure:Operating Frequency Range

SNP-68 860MHz Adjacent Channel CATV Modulator