Equipment for transferring video over the twisted pair

Catalogue

Purposes

The amplifiers set for the four-channel video transmission of video Twist-PwA-4 (hereinafter set) uses PwA technology for the transfer of four black and white or color video signals from cameras and power over twisted pair UTP, FTP, SFTP and likewise up to 400m depending on the type of cable and consumer cameras. The set has a built-in protection from the line of induced voltages caused by electromagnetic pulses of high energy. PwA technology allows to transmit power to the remote video cameras over free twisted pairs in a single multipair cable, next to the video.

Operating conditions

Operating Temperature Range:
- coder:	-20 to +45°С
- decoder:	0 to +45°С
Operating Humidity:	up to 90%

Specification

Channel number	4
Power	~ 110-250 V
Power consumption (4 cameras, 12 V / 0.5 А, distance 400 m)	65 W
Nominal input video voltage	1 V
Input impedance (coder)	75 Ohm
Nominal output video voltage	1 +/-10% V
Output impedance	75 Ohm
Frequency range	10 Hz - 6 MHz
Frequency response uneven (10 Hz - 6 MHz, distance 0-400 m, UTP CAT5E) :	under 3 dB
Valid 10/1000 ms pulse discharge current in the video transmission line limited 2-level protection (for the encoder and decoder)	57 A
Output voltage / output coder current (camera):	12 V +/-5% / 0-0.5А DC
Power circuits protection for encoder and decoder
- from overheating:
- from surges on the input and output:
- from current overload:
- coder	>0.75 A
- decoder	>2.5 A
Video and power transmission distance	up to 400 m
Dimensions
- coder	88 x 105 x 43 (mm)
- decoder	130 x 288 x 54 (mm)
Warranty period	36 months

Table of settings for video transmission range (UTP CAT5E)

	Switches position
Length, m	left	right
0-100	OFF	OFF
100-200	ON	OFF
200-300	OFF	ON
300-400	ON	ON

Scheme

Video with the test of device TWIST PWA-4

Photos

decoder	decoder - rear panel
coder in the hermetical case	coder in the IP-66 case