Head-end Equipment DVB-C Digital TV QAM Modulator with TS Multiplexing
★Description
★Features
DT-DQAM-M3204B is a new compact (1RU only) chassis and cost-effective QAM modulator with multiplexing function, which is designed by Hangzhou Prevail according to the DVB related standards. DT-DQAM-M3204B has 4 ASI input (Max. bit rate of each channel up to 108Mbps), one of RF output and RF testing output. The DT-DQAM-M3204B has very convenient and friendly management interface, the user can complete all operation via local keyboard and LCD display on device, or access through the Ethernet port on device.
★Features
⊙Up to 4 ASI inputs ⊙Up to 108Mbps bit rate for each DVB-ASI input (cover both data packets and data burst) ⊙Support multiplexing ⊙Adjustable Symbol Rate up to 7Mbaud ⊙Max. effective bit rate up to 51.6Mbps (SR=7Mbaud, 256QAM) ⊙Nominal RF Output power ≥100dBuV (with 0~15dB adjustable attenuation range) and 48~863MHz frequency range ⊙TS packet format input automatic detection and output configurable (188 or 204 bytes) ⊙PSI/SI tables regeneration ⊙PID filtering and re-mapping ⊙Local keyboard control and LCD display, or access via Ethernet link
★Specification
Parameter | Symbol | Description | Unit | Remark |
Mechanical dimension | ||||
Height | H | 42 | mm | About 1U |
Width | W | 434 | mm | About 17" |
Depth | D | 340 | mm | |
ASI Input | ||||
Number of ASI input | - | 4 | ||
Impedance | - | 75 | W | |
Connector | - | BNC | NA | |
Maximum bit rate | - | 108 | Mbps | |
TS packet format | - | 188 or 204 | Byte | Automatic detection |
Transmission format | - | Data packet or data burst | NA | |
RF Output | ||||
Impedance | - | 75 | W | |
Connector | - | BNC | NA | |
Frequency | - | 48~863 | MHz | Step 1MHz |
Output level | - | >100 | dBuV | Adjustable attenuation of 0~15dB |
Modulation Specification | ||||
Modulation scheme | - | 16QAM~256QAM | NA | Support Annex- A/C |
Symbol Rate | SR | ≤7 | Mbaud | |
Bandwidth | BW | 8 | MHz | |
Effective output bit rate | - | ≤51.6 | Mbps | |
Modulation Error Rate | MER | ≥40 | dB | After equalizer, 64QAM |
Bit Error Rate | BER | ≤1x10E-8 | After FEC, 64QAM | |
Carrier to Noise | C/N | ≥45 | dB | |
Bandwidth | BW | 1.15~8.05 | MHz | |
Effective output bit rate | ≤51.6 | Mbps | SR=7Mbaud, 256QAM | |
Modulation Error Rate | MER | ≥33 | dB | No equalizer, -8dBm, 64QAM |
Bit Error Rate | BER | ≥9x10E-9 | After FEC, 64QAM | |
Carrier to Noise | C/N | ≥43 | dB | Output level - 8dBm |
Connector | RJ45 | |||
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