Coast-Down/Run-Up Recordings - Commtest Instruments vb Series Instrument Reference Manual

To store the measurement see Storing Measurements (page 54).
Note: In free run mode with peak hold averaging, the instrument will
continue sampling and displaying the peak values for each spectral
line.
Tips:
With the spectrum displayed press
and check the frequency of any resonance peaks found.
Press
Setting your own parameters
Option
your own settings instead of the factory defaults. See Custom Setups
(page 57) for more information.

7. Coast-down/Run-up Recordings

Coast-down and run-up recordings involve taking a series of
recordings with a short delay between them. This technique can be
used to study the resonance behavior of a machine as its speed
gradually increases during power-up or decreases during coast-
down.
•
From the Main Menu press
display the Coast-Down/Run-Up Menu.
42 Section 3: Onsite Analysis - Measurement Menu
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then to clear the spectrum.
Custom Setup allows you to customize this menu to use
or to move the cursor
Measure then to