4 Getting Started
Meter Controls
056-652, Rev.D 1100/2100 SLM models
WEIGHTING A/C Switch
The WEIGHTING switch controls the frequency response of the meter.
Weightings A or C may be selected. See “Microphone preamplifier”, page
13 Weighting Characteristics, for further information.
RANGE (dB) Switch
The displayed range of the model 1100 is 70 dB and is switchable between
30-100 dB, 50-120 dB, and 70-140 dB. After switching ranges allow several
seconds for the meter electronics to stabilize.
RESET Button
This button is primarily used to clear the MAX sound level when the
instrument is in the MAX mode. Pressing the RESET button for at least a
half second will cause a reset of MAX. If observation of the changing Sound
Pressure Level is desired, while in the MAX mode, the RESET button may
be held down for as long as the SPL display is desired. Upon release of the
RESET button MAX will be reset and the 1100 will resume accumulating
MAX. The RESET button also functions as an up arrow during setup (see
“Changing the Calibration Level”, page 6).
CAL Button
This button is primarily used to enter the Calibration routine, but it also
functions as a down arrow during setup (see “Changing the Calibration
Level”, page 6).
Figure 2: Keypad/Control switches identified
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