Ground
Loop Isolator
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Minto NSW 2566
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Australian Business No: 93 098 402 218
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CCTV Ground Loop Isolator
1.6/5.6 In Line Plug
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1.6/5.6 In Line Socket
1.6/5.6 Right Angle Socket
1.6/5.6 PCB Socket
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Providing Effective Solutions for CCTV Security Applications
- Major Features of Ground Loop Isolator:
- High Reliability and Durability
- Compact enclosure
- Economy package, High quality and performance
- Passive Device (No power supply required)
- Transient Voltage Suppressor included
- BNC Male with 100 mm miniature coaxial cable input and BNC Female output
- Specifications for Ground Loop Isolator *:
- Bandwidth DC to 10 Mhz
- 75 ohm BNC Male to 75 ohm BNC Female
- Maximum video input: 1.1 Vp-p
- Insertion Loss <0.5 dB
- Isolation Voltage: 750 Volts DC
- Insulation Resistance: >100 M ohm
- Transient Voltage Suppressor: 12 Volts rms
- Operating Temperature: 0 to 55 oC Storage: -22 to 80 oC Humidity: 95%
- Casing Size: 50 x 30 x 25 mm
- Casing: Fire retardant plastic
- Casing Colour: Black
Video Ground Loop Isolator
Part No: E10500
The
video ground loop isolator has been specifically designed to provide a
cost effective solution to a common CCTV problem of multiple ground paths
or ground loops which results in a rolling hum bar or instability in the
picture being captured.
An added feature of the Video Ground Loop Isolator is the
incorporation of a Transient Voltage Suppressor to protect against surges.
Designed as a passive device the EQL Video Ground Loop Isolator will be an
essential component to incorporate in all CCTV installations where ground
loops are a known problem and to future proof the installation from
possible interference particularly for high security applications.
CCTV Image with Hum Bar Problem
CCTV Image with Ground
Loop Isolator
Due
to Multiple Ground Paths or Loops
to eliminate the Hum Bar
What is a Ground Loop
A
ground loop occurs when there is a potential difference between
inter-connecting equipment such as the camera and DVR and is due to an
imbalance in the power loading of the two systems.
The potential difference cause a loop current to flow between the two
inter-connecting equipment and as a result any interfering source such as 50
Hz mains power is picked up by the ground current flowing through the
braiding of the coaxial cable instead of it acting as a shield to protect
the interfering source from entering the coaxial cable.
See Figure below.
The
50 Hz mains power or hum is then passed on along with the wanted video
signal from the camera and displayed on the monitor as a rolling hum bar
Where to Install the Ground Loop Isolator
The
Video Ground Loop Isolator should be installed at the CCTV Camera end by
connecting the BNC Male connector of the Isolator to the camera and the BNC
Male connector of the coaxial cable to the BNC Female connector on the
Isolator.
In a multi-camera installation it is recommended that a Video Ground
Loop Isolator be installed for each camera.
* Specifications subject to change without notice.
Copyright © 2006 - 2008 EQL International
Marketing Pty Ltd ABN 93 098 402 218.
All rights reserved.