VMI VIBER X4, Manual, Page: 37 / 58

Vibration Measurement Instruments
Aux You can freeze (HOLD) the measurements by pressing the Aux key.
Menu In HOLD mode, you can access the (MENU) key menu where you
can:
•
Change the Main cursor
• Free The cursor is positioned over a line of the screen. If the screen area is
less than the number of lines, the cursor moves pixel by pixel on the screen and
displays the values for the highest line represented on the pixel. When you have
zoomed enough, the cursor will move to the next line.
• Line This cursor is mainly used to see line values. The cursor will move to the
position of the next spectrum line. This does not necessarily involve a change of
X position on the screen but the Y position will change. This is the default cursor.
•
Peak locked
If the screen area is less than the number of lines, the cursor
moves pixel by pixel on the screen and selects the highest line represented on a
new pixel. It determines if that line is a peak and if so, calculates and displays
peak values as cursor values. If it is not a peak, it will display the line value. The
cursor shape is changed when a peak is found. The X position of the cursor is
still the line position.
• Additional cursors This setting is the same as Ctrl + F3 during measurement.
• Harmonic Shows four harmonics of the cursor frequency.
•
Sideband
Shows four bands on each side of the cursor’s frequency. You can
change the frequency between each band by pressing the Ctrl + Up or Down
arrows.
• Amplitude scale The two basic amplitude scaling types are linear and logarith-
mic.
• Linear Linear amplitude scaling makes the largest components in a spectrum
very easy to see and to evaluate, but very small components may be overlooked
completely. Linear scaling may be adequate in cases where the components are
all about the same size.
• Logaritmic Logarithmic amplitude scaling shows the low level signals clearly
in the presence of stronger signals.
• Highest peak list Shows a list containing the 20 highest peaks in spectrum
measurement. All the settings in this menu are the same as in the spectra menu.
See page 32.
• Save You can save a measured envelope file in the SD memory card in order to
open it later in the file menu or transfer it to PC software for analysis.
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