Galaxy Audio CHECK MATE CM-130 User Manual
Page 7
SOUND LEVEL METER
5
○
3
Power Button
The ○
I
button turns the sound level meter ON or OFF.
○
4
MAX Hold button
Press the button to enter the maximum recording
mode. Select the proper level range before using MAX to
ensure that read value would not exceed the
measurement range. Press again to exit the MAX mode.
Note: If the sound level or A-C weight are changed,
the MAX mode will clear.
○
5
Frequency Weighting Select Button
A: A-Weighting for general sound level measurements
C: C-Weighting for checking the low-frequency content
of noise
(If the C-Weighted level is much higher than the
A-weighted level, then there is a large amount of
low-frequency noise.)
○
6
Time Weighting Select Button.
FAST: for normal measurements
SLOW: for checking average level of fluctuating noise
○
7
Level Range Control Button
Each time the level button is pressed, the level range
will cycle through the “Range1”, “Range2”, “Range3”,
and “Range4”, levels.
○
8
CAL Potentiometer
Calibration control for level calibration adjustment.
○
9
Battery Cover
MAX