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7
Controls and Functions
Unnamed keys (indicated by
*
symbol)
The four unnamed keys (indicated by a * symbol in the illustration be-
low) have no function in the normal operation mode of the VM-54. If
you press one of these keys, the indication "Invalid operation!" appears
on the sub display.
These keys perform certain functions only when one of the option pro-
grams (for marine vibration measurement, hand-transmitted vibration
measurement, or whole-body vibration measurement) is installed.
Level Range
X
Y
Z
Sub Display
Mode
X/Y/Z
Max Hold
Reset
Display
Menu
Light
Cal
Power
Install
*
*
*
*