Chengdu Jiexun Electronics Co., Ltd.| Manufacturer
Chengdu Jiexun Electronics Co., Ltd.

China Manufacturer with main products: Multiplexer, Encoder, Modulator, Digital Frequency Converter, Asi Distributor, Network Adapter, Set Top Box, Satellite Receiver

Home  >Products Catalog > Head end CATV parts > QPSK to QAM Trans Modulator

QPSK to QAM Trans Modulator

FOB Price: 1.00 - 2,000.00 USD/Set
Supply Ability: 5,000 Set/Sets per Month
Shipping: within 10days
In Stock
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Place of Origin: Sichuan in China
Packaging Details: 220*450*135mm (carton)

Specifications

Outline
QPSK to QAM modulator is a headend equipment with the professional broadcasting quality according to DVB standard . Its main function is to directly convert twin signals which could be QPSK modulated from satellite or other program source to twin QAM signals and then transmit via HFC or MMDS network. It doesn't need decompression, compression, QAM modulation, but directly modulate data stream demodulated to QAM signal sending to HFC or MMDS network. Therefore, it carries out SDTV/HDTV services and so on, providing many digital TV programs and data broadcasting programs with low-cost in SMATV.
Features:
* Constellation: QPSK/16QAM/ 32QAM/ 64QAM/ 128QAM/ 256QAM.
* The bite rate range of input data: 1.5~51.6Mbps
* The bite rate range of output data: 2~56Mbps
* The bandwidth range of output signal: 1.15~8.05Mhz
* The symbol rate range of output data: 1~7Mbaud/s
* RF range: 48~860MHz(segmented optional)
* Output level range: 100~115dBuv(step adjustable)
* Failure alarming
* RF test output interface for inspecting
* LCD display
* RJ45 ETHERNET interface(network management software is optional)
* Power off memory
 
Specifications
RF input
Input frequency
950~2150MHz
Level
-79 ~ -11dBm
IF Bandwidth
27~36MHz
Demodulation
QPSK
Impedance
75Ω
RF interface
RF output
Connector: BNC
Impedance: 75Ω
Output Frequency: 48~860MHz (segmented optional)
Reflect loss ≥15dB
Output level: 105~115dBuV (adjustable)
Carrier rejection: > 55dB
SNR(out of band):≥50dB
RF output for test
Connector: BNC
Impedance: 75Ω
Output level: 75dBuV~95dBuV (adjustable)
Channel signal encoding
Demodulation
QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM
Channel encoding
RS encoding meet to DVB standard
MER
≥36dB
SNR(out of band)
≥50dB
Power supply
Voltage
165~265V AC or 85V~265V AC(Optional)
Frequency
50Hz±2%
Power consumption
35W
Operation environment
Operation temperature
+5~45°C
Storage temperature
-25~+55°C
Relative humidity
10~75%
Radiation and safety
Up to GB13837-92 and GB8898-88 standards
Mechanic characteristics
Dimension
44.5mm(1U)*483mm*(19”)*400mm
Weight
7kg

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