DVB-S QPSK Modulator
1.Digital QPSK Modulator
2.Comply with DVB-S standard
3.high function,high quality
4.SNR>=45db

 digital DVB-S QPSK Modulator
1.Digital QPSK Modulator
2.Comply with  DVB-S standard
3.high function,high quality
4.SNR>=45db

Technical specification

1.1 Data interface

1.1.1 ASI interface (Asynchronous Serial interface)

A:Input:

Connector:BNC

Impedance:75Ω

Packet format:188/204 bits

Access data rate:270Mbps 

Max valid bit rate:60Mbps

DVB standard

B:Loop output:

 Connector:BNC

 Impedance:75Ω

1.1.2 SPI input interface (Synchronous Parallel interface)

Connector:DB-25 female  

Packet format:188 or 204 bits

DVB Standard:LVDS

1.2 RF interface

A. RF output:

Connector:BNC

Impedance:75Ω

Output Frequency:250MHz~500MHz, 450MHz~950MHz,950MHz~1800MHz(Supplied by different unit)

Reflect loss ≥15dB

Output level:100~110dBuV (adjustable)

Carrier rejection:> 55dB

SNR(out of band):≥45dB

B: RF output for test

Connector:BNC

Impedance:75Ω

Output level:85dBuV~100dBuV (adjustable)

1.3 Channel signal encoding

Constellation:QPSK

Channel encoding:RS encode, DVB-S standard

MER:≥40dB

SNR(out of band:≥45dB

1.4 Network management interface

IEEE802.3 ETHERNET, RJ45 interface

Software protocol:SNMP protocol

1.5 Network management interface

IEEE802.3 ETHERNET, RJ45 interface

Software protocol:SNMP protocol

1.6 Power supply

Voltage:165~265VAC or 85V~265V AC

Frequency:50Hz±2%

Power consumption:50W 

1.7 Operation environment 

Operation temperature: +5~45°C;

Storage temperature: -25~+55°C.

Relative humidity:10~75%

1.8Radiation and safety

Up to GB13837-92 and GB8898-88

1.9 Mechanic characteristics

Dimension: 44.5mm(1U)*483mm*(19”)*400mm

Weight: 6kg

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