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NOISE SENSING VOLUME CONTROL
SW
4
INTERNAL MIC ON
SETTING ADJUSTMENT RANGE
3
2 OFF 3 ON = 30dB
2 OFF 3 OFF = 60dB 2 ON 3 OFF = 45dB
2
1
Microprocessor
D1
Binary code displayed
by LEDs will change
D2
with change in
D4
ambient noise.
D8
Page Level LEDs
Power Input
+/GND
-24VDC power supply
V-9933A
DIP SWITCH SETTINGS
ON
INTERNAL MIC OFF
*
*
2 ON 3 ON = 15dB
SETUP
NORMAL
* DEFAULT SETTINGS
CHART 1
Audio Sensing LED
D9
-24VDC
Audio source input
FIGURE 1
4
OFF
*
Sensitivity
Adjust
DIP Switch
4
3
ON
OFF
2
1
Microphone
Ext Mic Page In Page Out
Audio output to speakers
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