Earthing The Camera - Bosch MIC550 IR Operation Manual

MIC Series 550
8

Earthing the Camera

Earth the MIC Camera to metal on or attached to the mount.
Warning!
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The camera must be earthed / grounded to meet EMC immunity standards.
Earth the camera using one of the supplied securing bolts. Only earth the camera at a single
point to prevent earth loops and video distortion (hum bars), caused by electrical
interference, from appearing on the camera picture in the control room. Please note:
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Bosch Security Systems, Inc.
The camera module and housing are electrically isolated, so the housing should be safety
earthed regardless. The safety earth should be a bonding connection (for example, one of
the securing bolts) to the camera housing, or should be attached to the Earth terminal
post on the PCD base of the camera.
If the system is copper throughout and the camera pictures are fed back to the control
room via coaxial copper cable, then the camera should be earthed only at the video
termination point in the control room. In this case, the "Earth Link" on the PCB should be
broken. Refer to Earth Link on PCB.
If the video is transmitted back to the control room via some non-electrical connecting
medium (for example, fiber optic, radio, or microwave link), then the camera should be
earthed at the transmitter point in the power supply unit. The PSU "Earth Link" may be
used for this purpose.
If dual earthing is unavoidable, then a video isolation transformer should be fitted
between the two earths.
Operation Manual
Earthing the Camera | en
2014.11 | 3.2 | F.01U.239.454
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