BRUEL & KJAER 2240 - Mounting for Mechanical Vibrations Tests; Electrical Substitute for Microphones; EMC Test Procedures

Integrating-averaging Sound Level Meter Type 2240 – User Guide10
without being harmful or even annoying, so care should be taken to use L
Cpeak
only for its
intended purpose. Such high values can be misleading in situations where they are not called
for. Note: L
Cpeak
is not time-weighted.
Fig.2.4
L
Cpeak
parameter
displayed
L
AFmax
, L
Cpeak
, and L
Aeq
sound level parameters begin calculation only when a measurement is
started (press ), and stop only when the measurement is stopped (press again). L
AF
is
calculated automatically when the sound level meter is switched on.
The measured values of L
AFmax
, L
Cpeak
, and L
Aeq
are cleared whenever a new measurement is
started.
Instrument Components
Fig.2.5 Front, side and back view of Type 2240 instrument
The following descriptions refer to the numbered instrument parts in Fig.2.5:
1) Sound Level Meter body: The main part of your instrument.
2
3
4
5
6
7
8
9
11
1
10
Front Panel Side Panel
Back Panel