Bộ Điều Chế QAM Winersat WQM-860SL

  • Description
    QAM Modulator
  • Producer
    Winersat
  • Price
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Description

Bộ Điều Chế QAM Winersat WQM-860SL

The WQM-860SL is a professional quality, digital headend component providing QAM TS and RF upconversion functions in a single module.

The QAM modulator then applies cable environment FEC to the transport stream and remodulates using QAM modulation to an IF QAM signal.

In RF upconverter, the IF QAM signal is SAW filtered and then upconverted to the desired output channel. Any standard CATV output channel may be selected in the range of 54 to 860 MHz. Bandpass flatness and phase noise are closely controlled in the WQM860 to ensure a high MER output signal. This ensures that the Qam modulator will not introduce a source of errors into the distribution process. Because the MPEG2 transport stream information is not modified by the QAM modulator, all encryption, authorization, and program guide information are passed on to the CATV set top box, without any changes.

FEATURES

  • Operates in DVB. 

  • ASI signal input and a digital QAM signal output in 16/32/64/128 or 256 QAM mode.

  • Front panel LCD for monitoring, data display and setup. 

  • High MER (Modulation Error Rate) ensures a low bit error rate. 

  • Switching power supply 90VAC-260VAC, 50Hz/60Hz. 

  • Standard 19' rack-mount for installation. 

  • SAW filtered IF out/in loop. 

  • RF modulation output 

--- 47-862MHz output frequency agility.

--- 60dBmV output level with Hybrid module IC. 

--- Output level adjustable by a 15dB range. 

--- Low out-of-band noise and High VSB attenuation. 

---Double PLL synthesized channel control.

  • Available to control multiple and daisy chain QAM modulators with our Monitoring & Control Software.

Data Sheet

DVB ASI-C INPUT

Connection medium Coaxial cable
Connector type BNC 75 ohms
Cable length 300 meters
Link character length 10 bit
Bit rate on link 270 M bit/s
Byte rate on link 27 M bytes/s
Useful data rate 0.1 M bits/s to 54 M bit/s
Max. Input Voltage 880 mV p-p
Data packet length 188 bytes or 204 bytes
Maximum MPEG-2 bit rate 213 M bits/s

QAM MODULATION

Modulation Mode QAM - 16, 32, 64, 128, 256
Bit Rate 54 M bit/s
Symbol Rate 1~6.95 Msps
Roll Off 15%
Phase Noise -91dBc @10KHz
MER 37 dB Typical
SNR 40 dB Typical
Carrier Suppression 53 dB Typical
FEC Reed Solomon (204, 188, T=8) code
Full Compliance with DVB-C ETSI/EN300 429
ITU-T J.83 Annex A(ie.DVB)

RF OUTPUT

Frequency Range 47MHz to 862MHz
Bandwidth 8MHz [PAL-D/K]
Output Level ≧ 60dB mV
Spurious and Harmonics ≧ 55dBc
Output Impedance 75 Ω
Frequency Accuracy/Stability ± 5 KHz
Connector F-type

CONTROL INTERFACE

Electrical Interface RS -232C
Data Link 57600bps, No parity, 8-bit data, 1 stop bit
Connector Type DB-9 Female for connection to next station

GENERAL

Operating Temperature Range 0 - 50 ℃
Power Requirement 90 ~ 260 VAC, 50/60 Hz.
Real size of the unit 482(W) x 283 (D) x 44 (H) mm.
Dimensions 608(W) x328 (D) x 84(H) mm.
Packing 1 set/Inner box, Gross Weight: 3Kgs.
5 PCs/ Carton / 16Kgs/ 625 (W) x 348 (D) x 456 (H) mm
Measurement 578(L)x375(W)x72(H)mm
Gross Weight 3Kgs.
Application

Bộ Điều Chế QAM Winersat WQM-860SL

  • IP System
  • Digital Headend
  • Analog Headend
  • Resort & Hotel & Building CATV System
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