HOT PRODUCTS WPG-100A WPX-0401 WTM-860SL

MODULATOR

  WAM-860SL / WSM-900 / WSM-360SL

MODULAR

 

WAM-520 / WSP-808S

AMPLIFIER
  WCA-5086 / WCA-4086RA / WIA-860i
 
WPX-0401 | WPG-100A | WQM-860SL | WDM-210ACI |WXM-860 SL | CodecGuard| WPG-100 |WDM-210
Product List
WQM-860SL
Overview
 
Features
  Technical Specifications

WQM-860SL QAM Modulator

 
Overview
 

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.

 

Technical Specifications

  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.