AMS Digital Equipment

Outline

AMS3340 4 in 1 DVB-C (QAM) is a cost effective integrated QAM(DVB-C) modulator. This device is integrating up to 4 channel QAM (DVB-C)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 unit 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

Input : 4ASI Input, BNC Interface(75Ohms)
DVB-S/DVB-S2/DVB-C/DVB-T tuner is optional

Modulation : 4 Channel QAM(DVB-C)
Standard :EN300429/ITU-T J.83A
Symbol rate : 5.0~7.0Msps,1ksps step
Constellation :16/32/64/128/256 QAM
FEC :RS(204,188)
RF Output Port F Type,75 Ohms impedance
Frequency range 48~860Mhz,1khz step
Output level -16dbm~0dbm(each carrier),0.5db step
MER > 40db
ACLR(adjacent channel leakage ratio) -60dBc

System Function
LCD/Key board, n>twork management, English language
Ethernet software upgrade

General
Dimensions (WxDxH) 482mm×455mm×44.5mm
Weight 6.7kg
Temperature range 0~45°(operation),-20~55°(storage)
Power Requirements AC110V±10%,50/60Hz orAC220V±10%,50/60Hz
Power consumption 25 Watt

Outline

AMS3402-C DVB-S2 modulator is a high performance modulator developed according to DVB-S2 (EN302307) standard which is the standard of second generation of the European broadband satellite telecommunication. It adopts advanced framing structure, channel coding and modulation technology, increasing over 50% transmission ability more than DVB-S modulator under the same transmission condition and also providing a more powerful receiving ability in the same spectral efficiency. It also provides RF 10MHz and 24V/2A DC coupling out. In addition, it is backwards-compatible with DVB-S (EN300421) modulating standard. This DVB-S2 modulator supports local and remote control through NMS software. For field scope, the device can be used for Broadcasting, Interactive Services, News Gathering and other Broadband satellite applications.

Features

Fully complying with DVB-S2(EN302307) standard
Backwards-compatible with DVB-S (EN300421) modulating standard
Two ASI inputs supporting hot backup
Supporting local and remote control
Output level attenuation
10MHz outer reference clock input
Output frequency range: 950~2150MHz
Coupling output: 24V/2A DC optional
Coupling output: 10MHz reference clock optional
Full-size front panel LCD display and keyboard

Specifications

MPEG-TS Input:
Supporting both packet and byte mode TS input
Supporting 188/204Byte transmission stream packet
Two ASI inputs, supporting hot backup
ASI input connector: BNC, impedance 75?

RF Output:
Frequency is continuously adjustable from 950 to 2150MHz
Output Level attenuation is continuously adjustable from 0 to 31.5 dB; in step of 0.5 dB.
Maximum Output level: 0dBm
MER>32dB
Connector: N type, impedance 50 Ohms
Coupling power supply: 24V/2A DC output
Coupling reference clock: 10MHz reference clock output Channel coding and modulation:
DVB-S / DVB-S2
RS coding
BCH coding
Convolutional
LDPC coding
Code Rate 1/2,2/3,3/4,5/6,7/8
1/2,3/5,2/3,3/4,4/5,5/6,8/9,9/10

Constellation: QPSK
QPSK,8PSK
Roll-off Factor
0.2, 0.25, 0.35

Symbol Rate : 1~45MBauds , 1~30M@8PSK;1~45 M@QPSK
Dimension : 44mm×482mm×410mm
Environmental : 0~45°(operation), -20~80° (storage)