Outline
NDS3340 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.(user can see the different rear panel illustrations in chapter 2.2) Hence, one PCS 4 in 1 QAM modulator can work as 4 standalone QAM modulators, significantly reducing the network operators’ head-end cost. NDS3340 can also support local and remote control to set its working parameters.
Features
- Fully complying with EN300429/ITU-T J.83A
- 4 adjacent channel QAM carrier
- 4×ASI inputs and 188/204byte TS packet support
- DVB-S/-S2/-C/-T RF input (optional)
- Accurate PCR adjusting support
- 16/32/64/128/256 QAM constellation support
- Symbol rate adjustment range: 5.0Msps~7.0Msps
- PSI/SI editing support
- RF output frequency range: 48MHz~860MHz in 1kHz step
- RF output level range: -16dBm~0dBm(each carrier) in 0.5dB step
- Excellent RF output performance index, MER≥40dB
- LCD & Keyboard operation
- NMS support
Specifications
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Input
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4ASI Input, BNC Interface(75Ω)
DVB-S/DVB-S2/DVB-C/DVB-T tuner is optional
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Modulation
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QAM channel
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4
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Standard
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EN300429/ITU-T J.83A
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Symbol rate
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5.0~7.0Msps,1ksps step
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Constellation
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16/32/64/128/256 QAM
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FEC
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RS(204,188)
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RF
Output
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Port
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F Type, 75Ω impedance
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Frequency range
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48~860Mhz,1khz step
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Output level
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-16dbm~0dbm(each carrier),0.5db step
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MER
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≥40db
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ACLR(adjacent channel leakage ratio)
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−60dBc
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System Function
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LCD/Key board, network management, Chinese and English language
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Ethernet software upgrade
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General
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Dimensions
(WxDxH)
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482mm×455mm×44.5mm
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Weight
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6.7kg
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Temperature range
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0~45℃(operation),-20~80℃(storage)
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Power Requirements
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AC110V±10%,50/60Hz
orAC220V±10%,50/60Hz
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Power consumption
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≈25W
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