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Outline
NDS3340A 4 in 1 QAM is a cost effective integrated QAM modulator designed by DEXIN Company. This device is integrated up to 4 channel QAM modulating carrier outputs, in which each carrier has independent signal channel encoding and direct RF output. Therefore, the device is featured with excellent RF performance index. It supports 4 channel ASI inputs. Alternatively, this device can take various RF inputs of DVB-S/DVB-C/DVB-T signals by installing the relevant build-in tuners. Hence, one PCS 4 in 1 QAM modulator can work as 4 standalone QAM modulators, significantly reducing the network operators’ head-end cost. NDS3340A can also support local and remote control to set its working parameters.
Feature
1, Fully support EN300 429/ITU-T J.83A
2, 4 adjacent channel QAM carrier
3, 4 ×ASI inputs and 188/204 byte TS packet support
4, DVB-S/- S2/- C/ -T RF input (optional)
5, Accurate PCR adjusting support
6, 16, 32, 64, 128, 256 QAM constellation support
7, Symbol rate adjustment range: 5.0Mbps~7.0Mbps
8, SI editing support
9, RF output frequency: 48MHz~1000MHz, 1khz step
10, RF output level: -16dbm~0dbm, 0.5db step
11, Excellent RF output performance index, MER≥40db
12, LCD & keyboard operating
13, NMS support
Specifications
| Input |
4 × ASI inputs,BNC interface |
|
DVB-S/- S2/-C/-T RF input (optional) |
|
| Modulation parameters |
QAM channel 4 |
|
Standard EN300 429/ITU-T J.83A |
|
|
Symbol rate 5.0~7.0Mbps, 1kbps step |
|
|
Constellation 16 / 32 / 64 / 128 / 256QAM |
|
|
FEC RS(204, 188) |
|
| RF Output Interface |
F interface, 75Ω impedance |
| Frequency range |
48~1000MHz, 1khz step |
| Output level | -16dbm~0dbm(each carrier) 0.5db step |
| MER |
≥ 40db |
|
ACLR |
(Adjacent Channel Leakage Ratio) − 60 dBc |
| System |
LCD/keyboard operating and NMS support |
|
English and Chinese interface conversion |
|
|
Ethernet software upgrade |
|
|
General Dimensions |
(Width × Length × Height) 482mm×455mm×44.5mm |
|
Approx weight 6.7Kg |
|
|
Temperature range 0~45℃(Operating), -20~80℃(Storage) |
|
|
Power Requirements AC 110V±10%, 50/60Hz or AC 220V±10%, 50/60Hz |
|
|
Power consumption 25W |
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