8- channel surge protection to UTP and coaxial cable LHD-8R series PRO
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LHD-8R-PRO is rack mount system designed to protect CCTV instalations  from lightnings, electrostatic overvoltages and vandalism.

LHD series is universal for UTP twisted pair and coaxial cable. You can choose which one will be connected by switching jumpers on PCB (Coaxial / UTP). It’s a perfect solution for installations with different types of cables.

The device include high quality converter (transformer), change impedance  UTP to coaxial cable.
The device dedicated is to transmission signal high frequency, which using to transmission Video HD in systems AHD, HD-CVI, HD-TVI / Turbo HD. Converter uses a high quality inductance of amorphous core, with linear characteristic allows signals move to 42Mhz.

LHD-8R-PRO is high quality, 8-channel surge protection for wire UTP and coaxialvcable. The device is dedicated to CCTV High Definition, using standard signal AHD, HD-CVI, HD-TVI oraz Turbo HD.
The device used three degrees protective acting in the right order while a lightning surge or other sources, both high and low. While normal operation, the signal transmission circuits are galvanically connected to ground, so are no harmful ground loops and interference, the HD signal. This protection is based on suppression of an electrical charge to the circuitry already in initial stage of formationand delays the emergence of the destructive voltage on the input circuit CCTV equipment. At the start of the primary impulse overvoltage, he is from the earth is neutralized using a different cable to ground. Surges generated inside the wire and secondary overvoltage, are eliminated before other circuit, decoupling special resistor. This results in a high strength to impulses multiple devices (stun guns) and ensures the order in each action grade protective.

Low capacitance circuit (7~9PF) has minimal effect on signal transmission from 0 ~ 100MHz, which for complex signals AHD HD-CVI and HD-TVI is very important, because it does not cause large attenuation.

LHD-8R-PRO can be use in systems  multi channel systems with 1-channel surge protection HDO-1F-PRO, HDT-1F-PRO or device series EXTREME . In order to ensure full protection.  It is recommended to use surge protection on two ends wire signal along with their ground.

Przykład zastosowania panelu do zabezpieczenia urządzenia odbiorczego z zastosowaniem urządzeń HDT-1F-PRO i HDO-1F-PRO

Example use  patch panel LHD-16R-PRO to basic protect DVR and cameras using  HDT-1F-PRO i HDO-1F-PRO.

The LHD-8R-PRO series is designed to Rack Cabinet. The patch panel can be mounted in front of  rack cabinet  at  rear of rack cabinet with a LK-MOUNT brackets

Technical Specification:
Video channel 8
Impedance UTP
75 Ohm
Impedance BNC
100 Ohm
Connector input (line)
Socket srew/ UTP
Connector output (device)
Wire with male BNC
Frequency response
42 MHz
Tłumienie 0.4dB
3 - Air ionizing, gas tube, transcient bridge
Protect line-ground
Gas tube: 90V, 2x10kA @ 8/20uS
Protect line-line
Transcient bridge: 6V, 100A @ 8/20uS
Maximum level overvoltage
Range transmission AHD (max)

720p: 320m
960p - 250m

Range transmission HD-CVI (max)

720p: 450m
1080p - 250m

Range transmission HD-TVI (max) 960p: 250m
1080p - 250m
Dimension 1U rack 19"

* transmission distance depend on the quality of the cable