COL5500 QPSK digital TV modulator adopts advanced digital signal processing technology, of which receiving port can directly use digital satellite receiver for receiving, thus fully complying DVB-S standard. Not only can it gain relatively high frequency spectrum usage ratio, having very strong anti-interference and relatively high price performance ratio, but also it can well comply analogue FM microwave equipment.
COL5500 QPSK digital TV modulator adopts various processing method, such as random energy spread processing, RS coding, convolution interweave, contracting convolution coding, and pre-modulating baseband shaping processing, etc. all these contribute a high guarantee to the data transmitting performance. In a word, its a high performance QPSK modulator fortransmitting digital TV and other digital signal.
Frequency: 50Hz±2%
Specifications
Data interface
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
SPI input interface (Synchronous Parallel interface)
Connector: DB-25 female
Packet format: 188 or 204 bits
DVB Standard: LVDS
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)
Channel signal encoding
Constellation: QPSK
Channel encoding: RS encode, DVB-S standard
MER:≥40dB
SNR(out of band):≥45dB
Network management interface
IEEE802.3 ETHERNET, RJ45 interface
Software protocol: SNMP protocol
Network management interface
IEEE802.3 ETHERNET, RJ45 interface
Software protocol: SNMP protocol
Power supply
Voltage: 165~265VAC or 85V~265V AC
#0.7066537931095809#
Power consumption: 50W
Operation environment
Operation temperature: +5~45°C;
Storage temperature: -25~+55°C.
Relative humidity: 10~75%
