11
④
Input range setting
Set the input range to an optimal setting. The optimal setting is to use the lowest range where an overload does
not occur. The key changes to the higher range, the key changes to the lower range.
By changing input range, an electric transient noise occurs and overload may be displayed.
In t
his case, it is
not an excessive input of vibration. When an overload is displayed immediately after changing input range,
please wait for a while. The overload may disappear.
When the overload occurs, the “Over” indication appears to the left side of display.
⑤
Setting the Frequency span and the Number of analysis lines
In order to determine the maximum frequency to analyze and the frequency resolution, the frequency span and
the number of analysis lines are set up. The frequency span can be selected by the FREQ SPAN key, and the
number of analysis lines can be selected by the LINE key.
Set the frequency span about three times larger than the fundamental frequency if the frequency can be
predicted like a rotating machine. Also set the number of analysis lines so that the frequency resolution
becomes narrower than 1 Hz. The frequency resolution is obtained by the frequency span divided by the
Overload state
RANGE key
Overload indication
FREQ SPAN key
LINE key
Setting the Frequency span
Setting the Number of
analysis lines
Select an item from a popup list