Single Channel Passive Video Ground Loop Isolator
Product Description
Solving Ground Loop Problems: A ground loop is an electrical problem that happens when an AC current interferes with the ground reference level of the video signal. It occurs on the conductive path formed by the shield of the video cable and the chassis of the video equipment. A loop results from the difference between the voltage potential of the shield at one end of the cable, versus the voltage potential of the shield at the other end. The electrical level of the shield is usually zero volts. When a ground loop is present, this level fluctuates above and below zero volts. The greater the difference, the more severe the distortion or tearing. If the potential is too great it can destroy the equipment. Ground loops are an after-the-fact type of problem in which the end-user blames the installer, the installer blames the manufacturer, and actually nobody is at fault. Neither the manufacturer nor the installer can predict where a loop will occur. Only after the system is installed can it be determined if a problem will exist. Ground loop problems can be corrected. It is important for both the dealer and the end-user to be aware that this problem can occur. A ground loop problem may occur at several points in the system, and each occurrence of the problem must be corrected individually. Loops can occur between a camera and monitor, from a camera to a switch, or one of many other possibilities.
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Ground Loop Problem (Before)
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Ground Loop Isolation (After)
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Video Ground Loop Isolator Features
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Video Ground Loop Isolator could reduce "Ground Loop Interference" with CCTV signals and can easily install in a new or added to existing systems. It is useful where a video signal is transmitted via cable between points with different ground potentials, differences in ground potentials are typically caused by unbalanced power line loads.
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Can effectively suppress interference AC power and uneven ground caused by various factors such as interference
- Address issues such as picture interference
- In the harsh environment to ensure the quality of video transmission, stable and reliable
- Can balance the DVR video sync signal value
- Used in the coaxial openings can balance the impedance mismatch problem
- Effectively extend the transmission distance and other characteristics
- Input/Outp with two mini cable BNC-F/M connectors- HT7000GLI/B
- Input/Outp w/mini cable BNC-M/Screw Terminal connectors- HT7001GLI/B
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Specification
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Insertion Loss: less 0.5dB
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Frequency Response: 0-3dB range in 20Hz to 12MHz
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CMRR: 58dB @ 1MHz
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Differential phase: less than 2 degrees
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Differential gain: less than 2%
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S/N ratio: >60dB
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Ground loop circuit isolation: >90dB and >50Hz
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DC loop resistance: 18 ohms/100m
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Isolation Voltage: 600VDC (Min)
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Input Resistance: 75 ohm
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Output Resistance: 75 ohm
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Insulation Resistance: 100M ohm
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Build in external paasive isolation circuit with isolation transformer,
DC video input signal saturation rejection, line termination for 'Hum Bar' rejection, common & differential mode noise LPF filter
perfect to DVR to immunity interference, for extra interference rejection(UST100GLIB)
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Two 165mm mini cable with BNC Female and BNC-Male input / output (for isolated equipment) connectors
Passive, no power required.
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Prevents video-signal distortion caused by video ground loops.
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Eliminates picture tearing, cross talk and rolling.
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Prevents power cables laid by others interfering with the CCTV system.
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Built in TVS (Transient Voltage Suppressors) for surge protection: 12V rms
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Dimension:
63mmx36mmx21mm with two 165mm mini cable -BNC male and female connectors
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Material: PVC Black-HT7000GLIB HT7001GLIB
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