Cofdm 4-CH Portable Video Receiver

• Application: Video Transmission, Data Transmission, Image Transmission
• Modulation: Qpsk, 16qam, 64qam
• Oscillator Circuit: LC or Crystal Oscillator
• Size: 600mm×391mm×230mm
• Weight: 16.5kg
• Color: Black
• Model NO.: MV2025RH7-AJKYZ(4)
• Transport Package: Carton
• Specification: SGS
• Trademark: ALLTECH
• Origin: Shenzhen, China
• Production Capacity: 5000pieces/Year

Product Description

Functions & Features:
n  4-CH A/V signal simultaneously receiving
n  Builtin 4-CH A/V synchronous hard disk video recorder for video recording, video file play and backup
n  MPEG-2/MP@ML/4:2:0 DVD decoding standard
n  En/decryption transmission
n  Channels parameters panel configurable
n  Full-featured PTZ camera remote control
n  Wide working voltage range with feed short circuit protect and indication
n  High definition image and hi-fi stereo output
n  COFDM demodulation and high receiving sensitivity (single antenna -92dBm, diversity receiving-96dBm )
n  Video receiving bandwidth adjustable, broadcasting level standard
n  Conference microphone and MIC audio input
n  GFSK digital audio modulation
n  Narrow audio transmitting bandwidth and high channel utilization 
n  Audio sending time controllable to reduce the power consumption subject to situation
n  Audio sensitivity adjustable with useless noise shielding 


 

Power Supply
Working voltage V		AC220V±20V
Working current A		≤[email protected] (if audio transmission is off)
		≤11.5A@ DC12.5V (if audio transmission is on)
Video Receiving
Frequency input range		170MHz~860MHz
RF bandwidth		1.25/2.5MHz or 6/7/8MHz
Rx sensitivity		-96dBm~-20dBm@8M/[email protected]
Demodulation		COFDM
Video decoding standard		MPEG-2/MPEG-4 compatible
Constellation		QPSK/16QAM @ 1.25/2.5MHz; QPSK/16QAM/64QAM @ 6/7/8MHz
FEC		1/3, 2/3@ 1.25/2.5MHz; 1/2, 2/3, 3/4, 5/6, 7/8 @ 6/7/8MHz
Carrier		2K
GUI		1/8, 1/16 @ 1.25/2.5MHz; 1/4, 1/8, 1/16, 1/32 @ 6/7/8MHz
Video output level		1~1.2Vp-p@75Ω
Video output format		PAL/NTSC
Video white bar amplitude mV		650~720mV
Video synchronous amplitude mV		260~275mV
Video amplitude-frequency characteristic  dB		0~4.8MHz	-0.5~1.5
		5.5MHz	-4.0~1.5
Rx feed output voltage		DC10V~DC12V
Rx feed output current (MAX)		300mA@DC12V(MAX)
Audio output		Right channel
Command
Command air baudrate	600bps~19200bps
Power output	≥32dBm
Keyboard communication protocol	Pelco-P such multiple protocols with baudrate adjustable
Keypress	Rubber button, numeric keypad, camera function keys
Audio Transmission
Audio Tx frequency	470.5~479.950MHz, factory setting:479.950MHz
Audio Tx power output	≥40dBm
Audio Tx modulation	GFSK
SHG	>62dBc
Frequency interval	150KHz
Audio encoding overall bitrate	4800bps
Audio sample	8KHz  16bit
Audio Tx delay	1~60 S
Audio input signal strength (MAX)	320mVpp
Hard Disk Recording
Video format	PAL/NTSC
Video encoding	H.264
Video resolution	D1, CIF, QCIF
Video frame rate	Adjustable, standard: PAL, 25f/s;  NTSC, 30f/s
Video bitstream	D1 (1000~1500kbps), CIF(400~600kbps), QCIF (192~384kbps)
SATA hard drive capacity	500G
Video Display
Monitor size	10.4 inch
Aspect ratio	4: 3
LCD	TFT LCD
Display area (mm)	211.4×158.4
Maximum resolution	640×480
Dot pitch	0.33mm
Display color	16.2  M
Brightness	250cd/m 2
Contrast	350:1
Response time	5ms
Physical Interfaces
Video output interface	75Ω, BNC, 1~1.2Vp-p
Audio output interface	600Ω, single track, lotus socket
Rx RF input interface	50Ω, N socket
Tx RF output interface	50Ω, UHF socket
Audio input	Conference microphone 6.35mm, MIC 3.5mm
USB interface	Mountable USB flash disk video recording
RS232 control interface	DB9 male, standard RS232 level, 9600, 8, N, 1
RS232 data interface	DB9 male, standard RS232 level, support 1200~115200
Network interface	RJ45, 10/100M self-adapted
DC power input	Anton mount
AC power input	3-core power IEC socket
Environment
Working temperature	-25°C~55°C
Storage temperature	-40°C~70°C
Appearance
Dimension	600mm×391mm×230mm
Weight	16.5kg
Battery weight	1.1kg
Color	Black