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QAM-to-QAM Regenerative Repeater DTV Modulator For Reginal Edge Headend System 

Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: GQ-3640

GQ-3640
 
QAM-to-QAM Regenerative Repeater
 
   GQ-3640 is a QAM-to-QAM regenera

GQ-3640
 
QAM-to-QAM Regenerative Repeater
 
   GQ-3640 is a QAM-to-QAM regenerative repeater with frequency shifting option. It can receive 2 DVB-C signal from its RF inputs, for demodulating, TS passing through, channel coding and finally output 1[1] QAM signals at adjacent channels. GQ-3640 can be used in the reginal edge headend systems, to improve RF signal quality from the succeeding system and perform QAM frequency shifting according to regioanl network needs, for ensuring signal quality and stability in long distance transmission.
 

 

Main Features:

 

  • Support ITU-T J.83 Annex A QAM modulation with output frequency range of 30MHz~860MHz
  • Equipped with 2 RF inputs and 2 loop-out ports
  • 1 QAM output with signal coming from either RF input
  • Output level: 98dBuV~118dBuV (single channels, step size = 0.25dB)
  • Support gain fine-tuning for in band level balancing, adjustable range: -2.5~10.5dB
  • Provide - 20dB RF test output
  • Filter circuit tracking design to ensure excellent out-of-band rejection
  • LCD front panel for status checking and device configuration
  • Equipped with serial port for working status monitoring and software upgrading

 

Technical Specification:

 

Input
Port Type F-type
Number of Ports 2*IN,2*LOOP OUT
Input Inpedance 75Ω
Chanel Mode ITU-T J.83 Annex A/B
Frequency 50~860MHz
Symbol Rate 4.27Mbaud/s
Constellation 16/32/64/128/256 QAM
Input EPL -65dBm ~ -25dBm
Output
Port Type F- type
Output Impedance 75Ω
Number of Ports 2
Symbol Rate 4.27Mbaud/s
Physical Bandwidth 4.838.05MHz
Frequency 30~860MHz
   
Constellation 16/32/64/128/256 QAM
Output Level 98dBuV118dBμV
Gain Fine-tune -2.510.5dB,Step size 0.25dB
Chanel Mode ITU-T J.83 Annex A
MER ≥ 45dB (equilibrium on)
Isolation ≥ 75dB
Reflection Loss ≥ 14dB
Management
Port Type RJ-45
Power and Consumption
Input Voltage 100240V AC
Input Frequency 50/60Hz
Consumption <15W
DC Output 2A/12V
Environmental
Operating Temperature 545
Storage Temperature -2585
Humidity 10%90%
Physical
Size (W x H x D) 260mm x 44mm x 160mm
Weight <2Kg
 

 
For More Information
 
Please visit our website or contact your local sales representative:
 

GOSPELL Shenzhen, China
Overseas Sales Center
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TEL: +86-755-26716172
FAX: +86-755-29114035
E_mail: sales.dtv@gospell.com

GOSPELL Chengdu, China
Overseas Sales Subsidiary
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TEL: +86-28-87838224
FAX: +86-28-87838304
E_mail: sales.dtv@gospell.com

GOSPELL Chenzhou, China
Headquarters
GOSPELL Industrial Park, Bai Lu Tang,
Su Xian District, Chenzhou, Hunan, China

     

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Office No.C-503, 5th Floor, L.B.S. Road, Bhandup (West), Mumbai-400078

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Company Info

Gospell digital technology co.,ltd [China (Mainland)]


Business Type:Manufacturer
City: Guangzhou
Province/State: Guangdong
Country/Region: China (Mainland)

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