Hitachi GR2000 manual Acoustic Noise

An ordinary office is acceptable for installation of the router; however, if the room where the router is to be installed is to be newly built, flooring with the following qualities is recommended. It is important not to have exposed metal in contact with flooring for safety reasons.

Insulation resistance: Use materials where the floor surface and ground resistance is 1 x 105–108 W cm. This is recommended for error and electric shock protection against static electricity. This condition is easily satisfied by setting up a conductive circuit.

Oil resistance: Oil is used for router maintenance.

Fire resistance

￿Dust free

5.1.7Acoustic Noise

1.Each model of GR2000 contains one or more cooling fans that generate noise. Several measurements at 1 meter from the vertical edge of the device show the following figures:

GR2000-2S: approximately 49 dB (A)

￿GR2000-4S: approximately 46dB (A)