Description Of The Instrument - Chauvin Arnoux C.A 832 Manual De Instrucciones

3. Take the necessary steps so that no obstacle is between the measurement point
and the noise source.
4. Disregard the extremely low readings (insignificant sound) or conversely those at
the top of the scale (overload).

3. DESCRIPTION OF THE INSTRUMENT

1. Measuring head including the microphone, protected by a foam cap.
2. Baclight liquid crytal digital display.
- Main display : digital value of sound level expressed in dB over 3½
digits or OL error code (overload).
- display symbols :
MAX Maximum value of the measurement
Battery discharged
F Fast time compensation
S
Slow time compensation
A
Weighting curve type A
C Weighting curve type C
If one of these 2 arrows is displayed continuously, this means that you
are not in the appropriate measurement range : use the RANGE push
button to move to the adequate range.
37-80dB,
Measurement range in use.
50-100dB,
80-130dB
OL Indicates overload of the measuring instrument.
3. 2-function push button:
Short press : Backlight ON/OFF,
Long press (>2 seconds) : choice of frequency weighting A or C.
RANGE
4. Push button for measurerement range change.
MAX
5. Push button for activation/deactivation of MAX function.
F
S
OFF
6. 3-position centre switch :
OFF
S
F
CAL
7. Protective cap for the tester calibration screw.
8. Screwdriver to be used for calibration of the sound level meter.
9. 'Jack' connector for recording using an external system.
10. Assembly screw for photo tripod.
11. Femal type output for use with 'Jack' connector.
Unit OFF
Long response time measurement (use for fluctuating noise
level measurements).
Fast response time measurement (most common operating
mode).
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