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Vista-CCTV.com

Latest News
Adderley Primary School now has a CCTV system, supplied by Norbain and installed by Spectre UK Ltd, to ensure the safety and well-being of the children and staff both during school time and out of hours. The system enables them to promote a welcoming environment and solve any potential disputes during school hours.
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Technical support > Support selection > Glossary

Glossary

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Galvanometric
(galvometric)
One method of converting the small electric currents produced by Auto Iris circuits into physical movement of the iris diaphragm. Used in both Auto Iris and Direct Drive lenses.
Gamma A camera adjustment that ensures a linear correlation of light gain on the entire system eg. A doubling of light input gives double light output.
Gateway A computer that performs protocol conversation between different types of networks or applications.
Gen. Lock (see ext.
sync)
To synchronize one piece of equipment to the sync pulses of another.
Gigabit Ethernet Technology that adapts the Ethernet model for data transmission at 1 Gbps or higher.
Gigabyte (Gb) Order of magnitude; 10 9
Ground Loop An unwanted continuous or temporary ground current flowing back and forth between two devices that are at different ground potentials.



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4T2Copyright © 2008 Norbain SD Ltd: updated on Sep 5 2008