Gecen Electronic Co., Ltd.

CATV Headend 48.25-300MHz Adjacent modulator model GCM-2000

Basic Information
Specifications 48.25-300MHz Adjacent modulator

1.IF SAW filter treatment

2.High performance of residual side band and out of band rejection

      Gecen CATV Headend Equipment 48.25-300MHz Adjacent modulator Model GCM-2000   Product Description   Features: With IF SAW filter treatment, high performance of residual side band and out of band rejection, suitable for adjacent channel system With dual PLLs controlled by CPU, making video and audio carrier frequencies more accurate and stable LED digital channel display Video modulation index; A/V carrier ratio; Audio FM deviation; RF output level are adjustable individually Suitable for 19 standard rack mounting, with rear panel AC outlet for cascade usage Specifications

Item

Unit

Specification

Item

Unit

Specification

 

Output Frequency Range

 

 

MHz

 

 

 

 

48.25~860

 

 

Differential Gain

 

%

 

≤3

 

 

Output Level MAX

 

 

dBuV

 

 

 

113

 

 

Differential Phase

 

.

≤3

 

Output Level Modulation

 

 

dB

 

 

 

20

 

 

C/L Delay

 

nS

 

≤35

 

 

Spurious Rejection

 

 

dB

 

 

 

60

 

 

Audio FM Deviation

 

KHz

 

±50

 

 

Video Carrier Accaracy

 

 

KHz

 

 

 

±5

 

 

Audio in-band Frequency Response

 

dB

 

≤1.5

 

Output Impedance

 

Ohm

 

 

75

 

 

A/V Carrier Power Ratio

 

dB

 

-10~30

 

Output Return Loss

 

dB

 

 

 

14

 

 

Audio S/N

 

dB

 

≥57

 

Video Modulation

 

%

 

 

87.5

 

 

Power Supply

 

V.AC

 

220±10%

 

Video Frequency Response

 

dB

 

 

 

≤2.0

 

 

Operating Temperation

 

°C

 

0~40

 

Video S/N

 

dB

 

 

50

 

 

 

 

 
Supplier Information
Gecen Electronic Co., Ltd.
[ Guangdong China ]
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