COL5400A QAM Modulator, is the main equipment CATV digital head-end, receiving DVB transport streams which come from coder, multiplexer, DVB gateway, scrambler, video server etc. It does signal processing like RS coding, convolution interleaving and QAM modulating, providing IF/RF output.
High reliability design, stable in running
ASI interface (Asynchronous Serial interface)
A:Input:
Connector: BNC
Impedance: 75Ω
Packet format: 188/204 bits
Access data rate: 270Mbps
Max valid bit rate: 51.6Mbps
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
IF interface
A: IF input
Connector: BNC
Impedance: 50Ω
IF frequency: 35.25/36/36.15/44 MHz (optional)
IF Bandwidth≤8MHz
Reflect loss ≥18dB
Input level: 100dBuV (rms)
B: IF loop output:
Connector: BNC
Impedance: 50Ω
IF frequency: 35.25/36/36.15/44 MHz (optional)
IF Bandwidth≤8MHz
Reflect loss ≥18dB
Output level: 100±2dBuV(rms)
RF interface
A. RF output:
Connector: BNC
Impedance: 75Ω
Output Frequency: 48~800MHz
Reflect loss ≥15dB
Output level:
105~115dBuV (adjustable)
Carrier rejection: > 55dB
SNR(out of band):≥50dB
B: RF output for test
Connector: BNC
Impedance: 75Ω
Output level: 85dBuV~105dBuV (adjustable)
Channel signal encoding
Constellation: 16QAM, 32QAM, 64QAM, 128QAM, 256QAM.
Channel encoding: RS encode, DVB standard
MER:≥42dB
SNR(out of band):≥50dB
Network management interface
IEEE802.3 ETHERNET, RJ45 interface
Software protocol: SNMP protocol
Power supply
Voltage: 165V~265VAC or 85V~265VAC
#0.10540571296587586#
Power consumption: 50W
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
E3 /DS3 Interface (optional)
A: Input (G.703 standard)
Connector: BNC
Impedance: 75Ω
Packet format 188/204 bits
Bit rate: E3/DS3 No-frame format (34.368Mbps/44.736Mbps)
B. Output (loop)
Connector: BNC
Impedance: 75Ω
