Chapter 5 – General Operation
Honeywell Confidential: Use or disclosure of information on this page is subject to the restrictions on the title page.
13841 Rev A
193
0-<24,000>RPM (Vibrex 2000) or 0-<600,000>RPM
(Vibrex 2000 Plus) context key. Pressing the key repeatedly
cycles through the available frequency ranges.
The Spectrum feature operates by listing the ten highest
peaks in the range of interest.
The default range is 0 to 24,000 RPM for the Vibrex 2000
and 0 to
600,000 for the Vibrex 2000 Plus. If the user is using the
Vibrex 2000 and encounter high peaks above 10,000 RPM,
all the available peaks may not show up.
If the ranging is lowered to 0 to 12,000 RPM the peaks in the
12,000 to 20,000 RPM range become replaced by lower-
level peaks in the
0 to 12,000 RPM range.
The minimum IPS value that displays is 0.01 IPS.
5.8.1.2
Annotating Spectra
Annotate the spectrum by pressing the context key next to the
[ANNOTATE] notation or press START and continue to the
next screen, then select the ANNOTATE context key. After the
user finishes an annotation, press START.
5.8.2 Collecting Spectral Data
Collect spectral data, as follows:
1. Operate the aircraft or engine in the desired condition.
2. Press the START key.
This action displays the Spectrum Data Acquisition screen,
meaning the Vibrex unit is collecting data.
NOTE: At any time during data collection, the user may
press the ABORT context key to stop the operation.