Digital Head-End 4 in 1 Qam Modulator CATV Wdq-3244

• Type: TV Front-end Equipment
• Certification: CE
• Condition: New
• Ts Packet Format: 188 or 204
• Modulation Scheme: Qpsk,16~256qam
• Transport Package: Pearl Wool
• Model NO.: WDQ-3244
• Specification: 1RU
• Trademark: Prevail/Fobetmoc
• Origin: China
• HS Code: 85437092
• Production Capacity: 50PCS/Month

Product Description

Description

WDQ-3244 4 in 1 QAM is a new compact (1RU only) chassis and cost-effective QAM modulator, which is designed by Hangzhou Prevail according to the DVB related standards. 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. Hence, one PCS 4 in 1 QAM modulator can work as 4 standalone QAM modulators, significantly reducing the network operators' head-end cost. WDQ-3244 has 4 ASI input, RF output and RF testing output. The WDQ-3244 has very convenient and friendly management interface, the user can complete all operation via local keyboard and LCD display on device, or access through the Ethernet port on device.

Features

4 adjacent channel QAM carrier
4 ASI inputs,TS packet format input automatic detection (188 or 204 bytes)
RF output power 90~100dBuV ( with 0~10dB adjustable attenuation range) and 48~863MHz frequency range
16~256QAM modulation modes 
Provide RF output monitoring port (-20dB)
Adjustable Symbol Rate: 5 to 7Mbaud
PSI/SI tables synchronization update
Excellent RF output performance, MER≥40dB
Memory protection for power-fail
Local keyboard control and LCD display, or access via Ethernet link

Application
DVB-C QAM modulation

Compatible
EN 50083-9 
ETSI TR 101 154 
ETSI TR 101 891 
EN 300 429(DVB-C)
ITU-T J.83A
 

Recommended Operating Conditions

Stress in excess of the maximum absolute ratings can cause permanent damage to the device (See Table 1) 
Table 1 - Recommended Operating Conditions

Parameter	Symbol	Min.	Max.	Unit
Supply Voltage^Note	V	90	250	V
Supply Frequency	F	49	51	Hz
power consumption	C		40	W
Ambient Operating Temperature	Tw	0	+50	°C
Storage Temperature	Ts	-25	+55	°C
Operating Humidity	H	10	75	%

Note: Support both 110V and 220V supply voltage standards, but please let us know which one do you need when you release order.

Specifications

Table 2 - Technical Specifications

Parameter	Symbol	Description	Unit	Remark
Mechanical dimension
Height	H	42	mm	About 1U
Width	W	434	mm	About 17"
Depth	D	340	mm
ASI Input
Number of ASI input	-	4
Impedance	-	75	W
Connector	-	BNC	NA
TS packet format	-	188 or 204	Byte	Automatic detection
Transmission format	-	Data packet	NA
RF Output
Impedance	-	75	W
Connector	-	BNC	NA
Frequency	-	48~863	MHz
Output level	-	90~100	dBuV	Adjustable attenuation of 0~10dB
Modulation Specification
Modulation scheme	-	16/32/64/128/256QAM	NA
Symbol Rate	SR	5≤SR≤7	Mbaud
Bandwidth	BW	≤8	MHz
Modulation Error Rate	MER	≥40	dB	After equalizer, 64QAM
Bit Error Rate	BER	≤1x10E-8		After FEC, 64QAM
Carrier to Noise	C/N	≥45	dB
Carrier suppression	-	≥58	dB
Phase noise	-	@10KHz≤-80dBc/Hz,@100KHz≤-100dBc/Hz

Process

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