Operation - Wohler SP 22 Manual

2. Operation

2. Operation
2.1 Front Panel Description
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1. Microphone
2. LCD Display
3. ON/OFF - Power button
4. REC - Records sound level
readings
5. MAXHLD - Freezes the maxi-
mum sound level reading
6. C/A - A/C Frequency weigh-
ting selector
7. BA MODE - Background noise
absorber
8. F/S - Fast/slow response se-
lector
9. DOWN - Adjusts the measure-
ment range
10. UPPER - Adjusts the measure-
ment range
11. DC 9V - DC adapter jack
12. CAL - Calibration screw
13. AC OUT - AC analog output
jack
14. DC OUT -DC analog output
jack
15. RS232 - RS-232 output jack
16. BACKLIT - Back light
Fax: +49 2953 73-96100
Wöhler SP 22