PRÜFTECHNIK VIB 5.300 EX Series, Operating Instructions Manual

Page: 106 / 172

4-12
VIBXPERT 11.2010
Reference (only in the route / machine template mode)
Here you can compare the current spectrum with a reference
spectrum or a historical spectrum. The spectra are displayed in a
‘waterfall’ diagram (see also p. 4-13).
Zoom / Scaling See 'Time signal', page 4-4.
Cursor
• Press the MENU key and click on 'Cursor' (see below)
N
ONE
/M
AIN
/ D
ELTA
: See 'Time signal', page 4-5.
H
ARMONICS
: Show/hide harmonic cursor
The harmonic cursor is used to assign harmonics in the spectrum.
The spacing of the individual cursors to one another corresponds
to the basic frequency at the main cursor. To adjust this, the main
or the delta cursor (highest displayed order) can be moved.
S
UBHARMONICS
: Show/hide subharmonic cursor
The subharmonic cursor can be used to detect subharmonics in the
spectrum. The spacing of the individual cursors to one another
corresponds to a integer fraction (1/n) of the main cursor.
If the subharmonic cursor is activated, the delta cursor is not
active.
S
IDEBANDS
: Show/hide sideband cursor
The sideband cursor can be used to identify modulations of a
carrier frequency. The distance of the sidebands can be set by
moving the outer cursor (press the joystick to change over).
Change the carrier frequency by moving the main cursor.
Main
cursor Delta cursor
(2nd order)
Results

Note
Left:
Spectrum, Cursor menu
Right:
Spectrum, Harmonic cursor