Service manual

9
Order map
Use order maps for an overview of
vibration data versus RPM or time.
Display the amplitude profile of
individual orders and suborders using
the slice marker function.
Al ter na tive ly, use trace markers to
select individual traces for display.
Order tracking
Measure only the data you need.
Order tracking lets you measure the
am pli tude profile of up to five orders
plus composite power si mul ta neous ly
on each channel. Up to four orders
or three orders and composite power
can be displayed simultaneously.
RPM profi le
Use RPM profile to monitor the
vari a tion of RPM with time during
order tracking mea sure ments.
Composite power
Composite power provides the total
signal power in a selected channel as
a function of RPM.
Run-up and run-down
mea sure ments
Run-up and run-down mea sure ments
of any order are made using external
trigger as the phase reference.
Display the results as bode or polar
plots; both are available. Markers
allow con ve nient notation of im por-
tant shaft speeds.
Orbits
Obtain oscilloscope-quality orbit mea-
surements with your 35670A. Unlike
traditional FFT analyzers, the 35670A
equipped with computed order track-
ing displays a selected number of
loops (usually one) as the shaft RPM
is varied.
Markers are used
to annotate shaft
speeds at selected
points in a run-up
measurement.
Oscilloscope-quality
orbit diagrams mean
you carry only one
instrument onto the
shop fl oor.
Order tracking is
used to si mul ta-
neous ly display up
to four orders or
a combination of
orders, composite
power and RPM
profi le.