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TWIST-TA-M Active Video Transmitter for Category 5 Unshielded Twisted-Pair cable (UTP)


TWIST-TA-M - Active Video Transmitter converts a signal from the source (video camera) into a differential video signal and is installed on the transmitting end of the video line


When the TWIST-TA-M transmitter on the transmitting end of the video line and TWIST-R-AUTO-M receiver on the receiving end of the video line are connected in series, a high-quality colour video signal is transmitted through the unshielded twisted pair (UTP) cable at a distance of up to 900 metres (2952 feet).

twist-p1, video balun, scheme



Transmitter TWIST-TA-M has discrete adjusting of frequency equalization in order to compensate high-frequency losses of video signal in the long line. The transmitter has output protection from impulse current surges with amplitudes of up to 5 kA and pulse width of up to 8/20µs, as well as protection from constant differential voltage of up to 24 V or common voltage between the earth wire and cable wires of up to ±12 V Both devices use low-voltage power, + 12V DC. These devices are for indoor use and are exclusively made using integral circuits manufactured by MAXIM (USA) and RD ALFA Microelectronics.
Devices are reliable, easy to use and have low power consumption.


Video distance recommendations:


twist-p1, video balun, max distance



 Parameter Value
Amplitude of input video signal 0.7 – 1.5 V
Wave resistance of UTP cable 100 Ohm
Frequency band 30Hz - 7 MHz
Transmission gain 1.5
Range of differential amplitude–frequency equalization at frequency 5.0МHz 0-12-18-22 dB
Signal/noise ratio 50 dB
Max. supply transmitter current 30 mA
Supply voltage (DC voltage) +12V
Dimensions 50х48х38 mm
Weight 60 g


Category type UTP Cat5
Impedance 100 Ohm
DC loop resistance 18 Оhm  per 100m
Differential capacitance 80 pF/m  max



High quality CCTV signal videotransmission at distances up to to 900 metres (2952 feet)

TWIST-R-AUTO-M, TWIST-TA-M, video balun,

High-quality transmission
of video signal at
a distance of up to
900 using (2952 feet)
using Cat5 UTP cable

Automatic frequency
corrections and automatic
adjustment of
video signal level

Transmitter’ outputs have a lightning & surge protection

The transmitter
have LED indicators
for video signal
presence and for
automatic operation mode

Fast black level
clamping of the
video signal
Use low-voltage
power, + 12 В DC





67109 400
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