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QAM Modulator in Cable TV System - JXDH-6302

QAM modulator, 1. Support IYU-T.83A, 2. Error correct encode completely meet DVB-C standard, 3. Support IF/RF outpout - more info check here: //www.telecomarticles.com/QAM-Modulator-in-Cable-TV-System-10012130/

Quick Brief

Place of Origin: Sichuan China (Mainland) Brand Name: JIEHAO Model Number: JXDH-6302 Input interface: ASI and SPI (DS3/E3 optional) Modulate Mode: 16QAM, 32QAM,64QAM,128QAM,256QAM Packet format: 188 or 204 byte(no route encodin... RF frequency range: 110~862MHz

Product Features:

QAM modulator

1. Support IYU-T.83A

2. Error correct encode completely meet DVB-C standard

3. Support IF/RF outpout

Business Terms:

Port: CD

Minimum Order Quantity: 1 Set/Sets

Supply Ability: 100000 Set/Sets per Month

Payment Terms: T/T,Western Union

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QAM Modulator in Cable TV System
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Product Packagings & Delivery Terms:

Packaging Detail: 220*445*135MM/CARTON

Delivery Detail: WITHIN 5 DAYS

Specifications and Product Details:

QAM Modulator

Outline

In the broadcasting process of digital TV programs, QAM modulator mainly complete QAM modulate and up-frequency conversation process for TS stream, Apply to multi-level transmission, broadcasting of digital TV business.

QAM modulator mainly used in head end of digital TV broadcasting, it is composed by two modules QAM modulator and digital up-frequency conversation, modulate the input serial or parallel TS stream via the QAM modulator module, modulate to IF frequency, then pass the up-frequency conversation module to frequency transform, into standard channel or supplement channel which meet demand. Finally mixed enter into CATV network, and received by the terminal STB.

Features

* Support IYU-T.83A

* Error correct encode completely meet DVB-C standard

* Be workable under QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM mode

* Input interface: ASI and SPI (DS3/E3 optional)

* Input date bit rate range: 1.5~51.6Mbps

* Output data bit rate range: 2~56Mbps

* Output signal Bandwidth(BW) range: 1.15~8.05MHz(roll down coefficient is 0.15)

* Output data symbol rate range: 1~7Mbaud/s

* RF frequency range: 110~862MHz

* Output level range: 95dBuV~115dBuV (stepping -0.5dB/step adjustable )

* 188/204 packet length adaptable itself

* Adopt big enough cache design, ASI interface support paroxysmal and symmetrical input TS stream, and can equilibrate and reforming the TS stream, enhance the efficiency of output TS stream.

* Input data empty packet filtering and output data fill in.

* PRC proofread function, can accurately correct several PCR of input data separately.

* Real time inspect and display for the efficient TS stream.

* Adaptable itself to filtering circuit design to ensure the excellent suppress capability out of band.

* -20dB RF test mouth to monitor IF output.

* Fault alarm display

* LCD screen display

* Network control interface, make centralize management, remote upgrade and maintenance (network management software only for option)

* Power-off memory

Specifications

Input interface

ASI and SPI (DS3/E3 optional)

Input date bit rate range

1.5~51.6Mbps

Output data bit rate range

2~56Mbps

Output signal Bandwidth(BW) range

1.15~8.05MHz(roll down coefficient is 0.15)

Output data symbol rate range

1~7Mbaud/s

RF frequency range

110~862MHz

Output level range

95dBuV~115dBuV (stepping -0.5dB/step adjustable )

ASI interface (Asynchronous Serial Interface)

Input

Socket: BNC
Impedance: 75Ω
Packet format: 188 or 204 byte(no route encode)
Route data speed velocity: 270Mbps
Max efficient data: 51.6Mbps
Standard: meet DVB standard, support paroxysmal and symmetrical input TS stream

Ring route output

Socket: BNC
Impedance: 75Ω

SPI Input Interface (Synchronous Parallel Interface)

Socket

DB-25 female

Packet format

188 or 204 byte(no route encode)

Standard

compatible of DVB, LVDS working methods

IF Interface

IF output

Linker: BNC socket
Impedance: 75Ω
Center frequency: 35.000~44.000MHz adjustable (stepping 125KHz)
IF bandwidth: ≤8MHz
Return loss: ≥18dB
Input level: 100dBuV

RF Interface

RF output

Connector: F jack (the metric system)
Impedance: 75Ω
Output frequency: 110MHz~862MHz (provide per model)
Return loss: ≥12dB
Output level: Max 115dBuV(adjustable, stepping at 0.5dB)
Level adjustable range: 0~20dB
Carrier suppression: >55dB
Modulate error rate(MER): ≥32dB(closing balance), ≥45dB(opening balance)
Bit modulate error rate(BER): 1*10-8
SNR(Outside band): ≥50dB

RF test output

Connector: BNC
Impedance: 75Ω
Output level: 75dBuV~95dBuV (adjustable)

Signal channel coding

Modulate mode

16QAM,32QAM,64QAM,128QAM,256QAM

Channel coding

comply with DVB standard RS coding

IF modulate error rate(MER)

≥44dB

SNR(outside band)

≥50dB

Network administration interface

Ethernet interface

Ethernet IEEE802.3, RJ45interface

Software agreement

the SNMP agreement
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