Extech Instruments 407780 User Manual

Model407780‐ENv2.31/14
4
Display Description
1. Level range
2. Date information
3. Leq: Equivalent continuous
4. SEL: Sound exposure level
5. SPL: Instantaneous sound pressure level
6. Low-Battery indicator
7. MAX: Maximum SPL value is held during measurement.
8. MIN: Minimum SPL value is held during measurement.
9. INST: Instantaneous of sound pressure level
10. Data recording
11. Measuring value
12. Memory full
13. Unit
14. Frequency weighting (A/C)
15. IMPULSE time weighting
16. When the TIME display icon switches on, the real time clock is displayed. When the TIME
icon is off the display shows elapsed time for Leq and SEL measurements.
17. Bargraph (100dB range with 50 segments)
18. Range over
19. SLOW time weighting
20. FAST time weighting
21. Measurement completion of Leq and SEL
22. Measurement interruption of Leq and SEL
23. Leq and SEL readings
24. Under Range

Extech Instruments 407780 Specifications

General

Brand	Extech Instruments
Model	407780
Category	Data Loggers
Language	English