BB106411.book : 2237-ch7 Black 4
Chapter 7 – Quick Reference
Displayed Parameters
7–4
Brüel & Kjær2237 Controller
User Manual
7.3 Displayed Parameters
The Measurement Window displays two parameters at a time
on the bottom two lines of the screen, though seven param-
eters are monitored by the instrument at all times. Press
to step through the readings. You are able to change the
displayed parameters both during and after measurement.
The flowchart below details the available paired choices. Note
that the weightings shown in the screens below (AF) may
differ from your own, depending on your settings. For more
information, see section 3.3.
7.3.1 Parameter Definitions
L
eq
(L
Im
) Equivalent continuous sound level since the last
reset. L
Im
is shown instead of L
eq
when the instru-
ment is set to an Impulse time weighting.
MaxP Maximum Peak since last reset
Peak Maximum peak in the last one second interval
MaxL Maximum SPL since last reset
MinL Minimum SPL since last reset
SPL Maximum sound level in the last one second inter-
val.
Inst A randomly sampled instantaneous sound level
from within the last one second.
7.3.2 Possible Weightings
AF “A” frequency weighting and Fast time weighting
AS “A” frequency weighting and Slow time weighting
AI “A” frequency weighting and Impulse time weighting
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