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calibr
ating
calibr
ating
Calibrating
Calibrating
About calibrating the
soundBadge
You can calibrate the soundBadge
in the fi eld using the soundBadge’s
acoustic coupler and an IEC 60942
compliant 1/2” microphone calibrator
set to ouputs 94.0 dB SPL at 1 kHz.
Th
e soundBadge supports:
• fast—microphone only calibration
• slow—full system calibration
Perform a fast microphone only calibration
Place the acoustic calibration coupler on the soundBadge, align the semicircular
cutout with the dB symbol on the front of the soundBadge.
Turn on the calibrator (94.0 dB SPL, 1 kHz) and insert it into the coupler.
Press
to advance to the
LEVEL
page (any frequency weighting/time constant).
Hold
down until ‘CAL’ is displayed; while continuing to hold
, press
.
Th
e display will show the diff erence between the sound level as measured with the
current calibration and your constant 94.0 dB SPL signal (the new calibration).
If a signal of 94.0 dB SPL +/-5dB is detected, soundBadge will auto-calibrate
Or you can Press
to adopt the new calibation. Th
is step may be repeated.
Perform a full system calibration
Aft er long periods of storage (6 months) or if the temperature, humidity or altitude
has changed signifi cantly perform a full calibration (dBA, dBC, dB(Z), Dose, Cpk
and fast and slow time constants). To perform this calibration follow steps
to
of
the fast microphone calibration opposite but substitute:
Hold
for 2 seconds to initiate a full calibration. Th
e display will update and the
bargraph will indicate calibration progress (takes 2 minutes).
soundBadge will automatically exit and return to normal operation when done.
Fa c t o r y - c a l i b r a t e
every 2 years (contact
your authorized
distributor).
acoustic calibration coupler
(accepts 1/2” microphone
calibrators—94.0 dB SPL, 1 kHz)
