Model 407764 Version 1.4 December 2004
3
Meter Description
1. Microphone
2. Display
3. Power switch
4. Level range control switch
5. MAX hold switch
6. Frequency weighting switch
7. Response time select switch
8. AC output terminal
9. DC output terminal
10. CAL (calibration) pot.
11. External DC 6V power
12. RS-232 interface connector
13. Battery cover
14. Tripod mounting screw
15. Wind-screen
(Figure 1)
Display Description
1. Range
selection
2. Date
information
3.
SPL: Instantaneous sound pressure level
4. Low-Battery
5.
MAX: Maximum SPL value is held
6. Data
recording
7. Measurement
value
8. Memory
full
9. Units
10. Frequency
weighting
(A/C)
11. TIME
function
12. 50dB level (Bargraph)
13. Over
range
14. SLOW time response
15. FAST time response
16. Under
range
(Figure 2)
