Thor 1-4 HDMI to ATSC Modulators 8VSB - Manual (Page 11)

H-4HDMI-ATSC-IP
Environment
Temperature 5~40℃(sustainable )，0~45℃(short time)，
installing HVAC is recommended
Relative Humidity 20%~80% sustainable 10%~90% short time
Pressure 86~105KPa
Door & Window
Installing rubber strip for sealing door-gaps and dual level
glasses for window
Fire Protection Fire alarm system and extinguisher
Power
Device power, HVAC and lighting should be independent to
each other. Device power requires AC 110V±10%, 50/60Hz or
AC 220V±10%, 50/60Hz. Please carefully check before
running.
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 ㎡.