User manual

158
Calibration
10
Unit Selection Accelerometer Sensitivity
The accelerometer sensitivity is provided in the range of
1 µV/(m/s2) - 10.0 V/(m/s2) or •
10 µV/g - 100 V/g•
Field Calibration - With External Sound Calibrator
Field-sensitivity setting for measurement microphones with an
external calibrator.
Turn the rotary wheel •
to select the parameter User Cali-
bration
6
and press enter
.
Set the calibration level according to the calibrator used.•
Generate the specific reference signal with the calibrator •
onto the microphone.
Turn the rotary wheel •
to select the parameter RUN
5
and press enter
.
The pop-up window • Calibration: Calibration running ... ap-
pears and changes to Calibration: Successfully finished!
for a successfully completed calibration.
Field Calibration - Manual Sensitivity Setting
In case no external calibration device is available, set the sensi-
tivity of non-NTi Audio sensors manually according to the prod-
uct specifications as follows:
Select • Sensitivity
7
with the rotary wheel
.
Press enter •
and adjust the sensitivity with the rotary
wheel .
Confirm with enter •
.
Field Sensitivity
The XL2 writes the field-sensitivity setting onto
the electronic data sheet of the connected NTi
Audio measurement microphone, microphone
preamplifier or ASD Adapter. All subsequent
measurements automatically utilize this field-
sensitivity.
In case the measured sensitivity deviates ±1.5
dB for a class 1 microphone and ±3 dB for a
class 2 microphone to the nominal microphone
sensitivity, then the XL2 displays the following
message: Measured sensitivity to far (xxdB)
from factory settings. Check calibration level
and microphone!
In doubts kindly contact NTi Audio with the de-
tails.