Rion VM-55, Instruction Manual, Page: 32 / 204

20
Preparations
Accelerometer placement
On hard surfaces
On hard surfaces such as concrete, asphalt, wood, or solid ground, choose
a level area and place the accelerometer carefully on the surface.
On soft surfaces
For measurements on soft ground, you should fi rst harden the surface, for
example by treading the ground with your feet. For measurements on a
grassy surface, the grass should be cut fi rst. Then place the accelerometer
on the ground and push it slightly into the surface.
Extremely soft surfaces such as sand, or thick carpeting within buildings
should be avoided.
Important
Avoid locations exposed to direct sunlight or to
drastic temperature changes. Such conditions
can cause changes in accelerometer sensitivity,
which will impair the accuracy of measurement
results.
Accelerometer connection
1. Insert the plug of the supplied extension cord EC-54S (3 meters) into
the connector on the tip of the accelerometer, aligning the guide on
the plug with the connector. Turn the locking ring clockwise to fasten
the plug.
2. Insert the plug at the other end of the cord into the Input connector
on the VM-55, aligning the guide on the plug with the connector.
Turn the locking ring clockwise to fasten the plug.
Important
The accelerometer is a precision device. Never
drop it or subject it to shocks.