Larson Davis HVM100, Manual

Page: 49 / 174

4/11/03 Range Menu 4-5
NOTE: To change the Sensitivity param-
eter, press the
c
key, use the
u
and
d
arrows to select the desired value,
and then use the
r
and
l
arrows to
move to the next position. Once all posi-
tions are set press the
c
key or move to
any other part of the HVM100 to accept
the entry.
To enter the sensitivity of the accelerometer, go to the menu
item for the desired channel. Press the
c
key to enter the
change menu, use the
r
and
l
arrow keys to select the
position you wish to change, and the
u
and
d
arrow
keys to change the characters. When the correct sensitivity
has been entered, press the
c
key to confirm the change.
The entry procedure is the same for all channels, and the
screens will look the same. The units for ICP® and Direct
are mV/g (rms), the units for charge accelerometers are pC/g
(rms).
Reference Acceleration
Hint:
This setting is in the Range menu. To access the Range menu press the
RANGE
key and then use the
u
and
d
arrow keys to navigate
through the menu items.
NOTE: To view each selection, first press
the
c
key, and then press the
r
or
l
arrow key to scroll through each selec-
tion.
The HVM100 uses the following reference values to display
acceleration, velocity and displacement in dB units:
• Acceleration 10
-6
m/s
2
• Velocity 10
-9
m/s,
• Displacement 10
-12
m
The following reference values are also available for the
user to select:
• Acceleration 10
-5
m/s
2
• Velocity 10
-8
m/s
• Displacement 10
-11
m
S e n s i t i v i t y X
1 . 0 0 0 e + 2 m V / g
d B r e
1 0 e - 5 m / s
2