Gen II
User Manual
13-27 – Transient Vibration Survey
Chapter 13
Revision 4.10, Apr 20
13.1.9.2.
– Function Key Options when viewing Spectra
13.1.9.2.1.
Pressing the [F1] “Options” key will change the [F1], [F2], [F3], [F4] and [F5] boxes to
read “Cursor”, “X Scale”, and “Y Scale”, “View” and “Cancel” respectively as shown in
the figure below.
Pressing the [F1] “Cursor” key will change the [F1], [F2], [F3] and [F5] boxes to read
“Normal,” “Harmonic,” “None” and “Cancel” respectively. The functions of the “F” keys
will continue to change as the screens change.
Pressing the [F1] “Normal” key will produce a normal cursor (green box in
screenshot below) on the screen accompanied by an X and Y scale value readout
box in the upper right corner of each displayed spectra (see the following figure).
These X and Y values are relative to the current position of the cursor only. The
cursor can be moved along the X- (horizontal) axis of the spectra by pressing the
[
] or [
] keys. Hold down the key for large and rapid incremental changes. The
value of the X-axis (frequency) and Y-axis (amplitude) will be displayed for the
current position of the cursor. Incremental values are determined by the number of
lines of resolution specified in the setup screen.
Pressing the [F2] “Harmonic” key will produce multiple harmonic cursors (yellow
boxes in screenshot below) according to the specified frequency range. When this
key is pressed, cursors will appear to the right of the fundamental frequency
identified by the leftmost cursor. For example, if the fundamental frequency is 300
Hz cursors will be placed at 2X (600 Hz) 3X (900 Hz) 4x (1200 Hz) and so on until
the upper frequency limit of the screen is met. When the primary cursor (for the
fundamental frequency) is moved, the multiple harmonic cursors will automatically
follow the movement and position themselves at the new multiple of the
fundamental frequency. To remove the harmonic cursors, repeat paragraphs under
