Larson Davis HVM100, Manual

Page: 88 / 174

7-8 HVM100 User Manual 4/11/03
NOTE: The vibration dose value (VDV),
specified by ISO 8041 and calculated by
the HVM100, has units of m/s
7/4
. The
HVM100 is also capable of displaying
VDV in cm/s
7/4
, ft/s
7/4
, or in/s
7/4
(using the
Display Units parameter). However, if
Display Units are set to "g" or "dB", the
VDV becomes an undefined quantity.
Therefore, if the display units are "g" or
"dB", the HVM100 will display a series
of dashes (------) for the value.
Please see the specifications appendix for further informa-
tion regarding specifics of all measured values.
NOTE: The Short-Term Crest factor
(CF) is not calculated if the Averaging
Time setting is SLOW
The Frequency weighting and channel are also reported.
A ( 4 ) . 0 0 0 5 2
A ( 8 ) . 0 0 0 3 6 F a Z
The 8th screen shows the Allowed Exposure Time based
on the measured A(8) value and a criterion level of 2.8
m/s
2
.
A ( 8 ) E x p o s u r e
Additional Data view screens for Hand Arm Mode
Additional Data view screens for Whole Body Mode
The Vibration Dose Value and run time are displayed on
the first line. The value, units, frequency weighting, and
channel are displayed on the second line.
V D V 0 : 0 0 : 0 0
2 . 9 7 0 0 m / s
7 / 4
W B Z
Short Term Crest Factor is shown on the first line, the
Long Term Crest factor is reported on the second line.
The Frequency weighting and channel are also reported.
C F 2 0 . 3 d B
C F m p 0 . 0 d B W B Z
3 . 7 h r s F a Z