Commtest Instruments vb Series Instrument Reference Manual page 55

The only parameter you need to set is the frequency of interest - this
is typically the machine running speed.
•
Press
•
Press
The instrument will perform a spectral peak search at the entered
frequency (machine speed or any frequency of interest) on the
channel 1 signal. The frequency of the actual peak is displayed at
the top of the screen, always in RPM. The instrument then looks at
exactly the same frequency on channel 2 and displays the phase
difference Ø
amplitudes of both channels at that peak frequency.
•
To change the target frequency (the peak of interest) use
Note: This measurement cannot be saved.
Setting your own parameters
Option
your own settings instead of the factory defaults. See Custom Setups
(page 57) for more information.
46 Section 3: Onsite Analysis - Measurement Menu
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
to enter the RPM then
to begin measuring both channels.
- Ø (CH2 - CH1). The instrument also displays the
2 1
or to adjust the value in 50 RPM increments.
Custom Setup allows you to customize this menu to use
to continue.