Model 407750 Version 2.1 February 2004
3
Meter Description
1. LCD
Display
2. Microphone
3. ON/OFF
key
4.
REC (Record) key
5.
MAXHLD (Max Hold) key
6.
C/A Weighting Select key
7.
BA (Background Absorber) key
8.
F/S Fast / Slow Response select key
9. DOWN
10. Backlit (LCD backlighting) key
11. UPPER
12. AC adaptor jack
13. Calibration screw adjust
14. AC analog output jack
15. DC analog output jack
16. RS-232 output jack
Note: The Battery Compartment and the Threaded Tripod mount access are located on
the back of the instrument (not pictured)
