Common Grounds With Star Wiring - Photon Focus Luxima MV4-D1280-L01-G2 User Manual

14 Hardware Interface

14.7.2 Common Grounds with Star Wiring

Ground loops can be avoided using "star wiring", i.e. the wiring of power and ground
connections originate from one "star point" which is typically a power supply. Fig. 14.12 shows
a schematic of the star-wiring concept.
Fig. 14.13 shows a schematic of the star-wiring concept applied to a Photonfocus GigE
camera.The power supply and ground connections for the camera and for the I/O are
connected to the same power supply which acts as the "Star Point".
Device 1
- +
Device n Device 2
- + - +
GND PWR
Device 4 Device 3
- + - +
Figure 14.12: Star-wiring principle
Star wiring, no ground loop
Isolator
ISO_IN
ISO_GND
CAMERA_GND
Star point
Figure 14.13: I/O wiring using star-wiring
.
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