Changing The Displayed Secondary Parameter; Changing The Frequency Weighting Of The Displayed Lpeak Value; Changing The Amplitude Range, Or Input Gain - Larson Davis 824 Technical Reference Manual

Changing the displayed secondary parameter

Changing the frequency weighting of the displayed Lpeak value

Changing the amplitude range, or input Gain

2-10
Step 1 To select the secondary parameter to be displayed
(Leq in this example), use the
highlight the Leq label.
Step 2 Press the
ues of A-weighted SEL, Lmin, Lmax, Lpeak val-
ues. Select "Peak" and press the check
Step 1 With the Peak label selected, press the
d
keys to highlight the Peak weighting.
r l
Use the or
weighted Lpeak values.
When using the SSA ID, as in this example, the
measurement range is 80 dB, unlike the ISM and LOG IDs
for which it is 105 dB. In order to optimize a particular
measurement, provisions have been made to select a value
of input gain directly from the graphic display. The gain can
824 Reference Manual
r l
or arrow keys to display the val-
arrow keys to display the A, C or Flat
u d
or keys to
c
key.
u
or
9/29/09