Radio Shack 33-2055 - Setting the Weighting; Setting the Response

SETTING THE WEIGHTING
The WEIGHTING button lets you set the meter's
weighting characteristics, which determine the
meter's frequency response curve. You can select
A-weighting or C-weighting.
A-weighting has A-curve frequency characteris-
tics. This setting causes the meter to respond
mainly to frequencies in the 500-to-10,000
Hz
range, which is the human ear's most sensitive
range. Select A-weighting to determine an area's
noise-level. Take measurements at several diffe-
rent points in the area.
C-weighting has C-curve (flat) frequency charac-
teristics. This setting causes the meter to respond
mainly to frequencies in the 32-to-10,000
Hz
range. Select C-weighting to measure sound le-
vels of musical material.
I
1
When you set RANGE to OFF, the meter automati-
cally selects C-weighting.
Press WEIGHTING to change the weighting
between A and C.
DH RESET MIN MAX
(o r r 01
WEIGHTING RESPONSE
( LJ 0 1
The display shows the current setting
(WEIGHTING
A or WEIGHTING C).
Note: You can change the weighting setting only
during a continuous average or maximum mea-
surement.
SETTING THE RESPONSE
The RESPONSE button lets you set the interval at
which the meter revises the
bargraph sound level
reading. There are two settings
- fast and slow.
When you
set RANGE to OFF, the meter automati-
'
cally sets the response for fast.
At the fast setting, the meter revises the
bargraph
reading after about 0.2 second. At the slow set-
ting, the meter revises the reading after about
every 0.5 second.
Press RESPONSE to change the bargraph's
response between fast and slow.
The display shows the selected setting
(RESPONSE
SLOW Or RESPONSE PAST).
Note: You can change the response setting only
during a continuous average or maximum mea-
surement.