Rounding, Equirement, Hdmi/sdi-qam-ipll – Thor 4-Channel HDMI to QAM Modulator and IPTV Streaming Encoder with Low Latency User Manual
Page 10: 5 grounding requirement

HDMI/SDI-QAM-IPLL
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2.5 Grounding Requirement
It is important to keep this device grounded to ensure all of the modules function correctly.
Correctly grounding the device will also help prevent any electrical interference, lightening.
Etc. Also it helps reject minor interference that may disrupt the devices ability to function
smoothly. General rule of them, make sure the device is grounded when installing anywhere.
Always use copper wire. When applied correctly the ground must be wrapped well to
ensure maximum conduction so it can reduce any high frequencies. The copper ground wire
should also be as short and thick as possible
Installer must make sure that the two ends of the ground are well conducted and have
appropriate anti-rust properties.
It is prohibited to use any other device as part of the grounding electric circuit.
The area of the conduction between the ground wire and device’s frame should be no less
than 25
㎡
.