SoundAdvisor Model 831C
Choosing a Calibrator
5-5
5.3 Choosing a Calibrator
TAKE NOTE
If using a 1/4-inch microphone, the 1/4-inch adapter (ADP024, or
ADP109) is required.
Larson Davis recommends the following calibrator for the 831C:
• Larson Davis Model CAL200: 94/114 dB @ 1 kHz.
The following instances require a correction:
• Using a free-field microphone: For details, see the calibration
data shipped with calibrator.
• The calibrator and instrument are at a temperature other than
room temperature (23° C) or not near sea level. For details, see
the calibration data shipped with calibrator.
• Always recalibrate your meter when moving it to another
location (e.g. meter moved to or from 85 kPa static pressure
elevation).
5.4 Calibrating Your SoundAd isor 831C
Step 1
On your SoundAdvisor, go to
Tools
Calibrate
.
Step 2
Choose your calibrator from the
Select Calibrator
drop-down menu.
LEARN MORE
Refer to the calibrator’s user guide for more information.
TAKE NOTE
For more information on the
Other
option, see
5.2.2 Calibration
Settings Tab
.
Step 3
Insert the 1/2” microphone into the 1/2” microphone opening at the
bottom of the calibrator.
Step 4
Turn calibrator
on
. The calibrator turns off after 1 minute. Use it within
that time, or press the button again.
Step 5
Select
Do Calibration
. The 831C calibrates and asks if you want to save
the results.
Step 6
Select
Yes
when complete.
TAKE NOTE
If you see an error message (such as Calibration Out of Range
)
,
verify that the calibrator frequency on the calibrator matches the
calibration frequency on the meter,
and perform the calibration
again. Be sure to power the calibrator ON each time.
