WDQ-3204B 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. WDQ-3204B has 4 ASI input (Max. bit rate of each channel up to 108Mbps), one of RF output and RF testing output. The WDQ-3204B 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
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
|
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 |
|