14.7 I/O Wiring
14.7
I/O Wiring
The Photonfocus cameras include electrically isolated inputs and outputs. Take great care when
wiring trigger and strobe signals to the camera, specially over big distances (a few meters) and
in noisy environments. Improper wiring can introduce ground loops which lead to malfunction
of triggers and strobes.
There are two roads to avoid ground loops:
•
Separating I/O ground and power supply (ISO_GND) from camera power (CAMERA_GND,
CAMERA_PWR)
•
Using a common power supply for camera and I/O signals with star-wiring
14.7.1
Separate Grounds
To separate the signal and ground connections of the camera (CAM_GND, CAM_PWR, data
connections) from the I/O connections (ISO_GND, ISO_IN, ISO_OUT) is one way to avoid ground
loops. Fig. 14.11 shows a schematic of this setup. In this setup the power supplies for the
camera and for ISO power must be separate devices.
Isolator
ISO_IN
ISO_GND
CAMERA_GND
ISO_GND
Separate ground, no ground loop
Ground plane
voltage difference
Figure 14.11: I/O wiring using separate ground
.
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Summary of Contents for MV4 Series
Page 8: ...CONTENTS 8 of 143 MAN093 08 2021 V1 1 ...
Page 12: ...1 Preface 12 of 143 MAN093 08 2021 V1 1 ...
Page 40: ...4 Image Acquisition 40 of 143 MAN093 08 2021 V1 1 ...
Page 42: ...5 Exposure Control 42 of 143 MAN093 08 2021 V1 1 ...
Page 52: ...6 Counter Timer 52 of 143 MAN093 08 2021 V1 1 ...
Page 64: ...10 Image Format Control 64 of 143 MAN093 08 2021 V1 1 ...
Page 66: ...11 Frame Rate 66 of 143 MAN093 08 2021 V1 1 ...
Page 82: ...12 Pixel Data Processing 82 of 143 MAN093 08 2021 V1 1 ...
Page 92: ...12 Pixel Data Processing 92 of 143 MAN093 08 2021 V1 1 ...
Page 96: ...13 Precautions 96 of 143 MAN093 08 2021 V1 1 ...
Page 120: ...16 Troubleshooting 120 of 143 MAN093 08 2021 V1 1 ...
Page 126: ...19 Support and Repair 126 of 143 MAN093 08 2021 V1 1 ...
Page 128: ...20 References 128 of 143 MAN093 08 2021 V1 1 ...