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Crest Factor Check
The crest factor check is a whole body vibration pre-check that can be carried
out to verify if Vibration Dose Values are required with the recording. To ensure
accuracy always ensure that the operation being monitored is currently being
undertaken before the crest factor check is started.
Various application standards such as ISO 2631 require that VDV be recorded
if the crest factor exceeds 9.00ms
-2
. See
Setup Options
under
Chapter 5
for
the procedure to turn on VDV for whole body vibration.
Please be aware that other application standards may require that VDV is
recorded at different crest factors, please refer to the specific standard for
exact requirements.
With the operation in progress, press the
OK
key to start the check which takes
a total of 15 seconds. While the check is active pressing
Soft Key 1
labelled
EXIT
will cancel the check and return to the previous screen.
When the check is not active, use
Soft Key 1
labelled
EXIT
to return to the
previous screen or
Soft Key 2
labelled
RANGE
to change the range if an Under
Range or Over Load condition occurs.
Figure 92 – Crest Factor Check
09:46:10
26:08:11
CREST FACTOR
09:46:00
26:08:11
CREST FACTOR
EXIT RANGE
EXIT
Time : 3.5
Press OK to start
Range: 0.02 – 100 ms
-2
3. Z:
1. X:
2. Y:
Range: 0.02 – 100 ms
-2
3. Z:
2.010
1. X:
1.130
2. Y:
0.870
