407780 Datasheet, PDF (2/13 Pages) Extech Instruments Corporation. – Integrating Sound Level Datalogger

Introduction
Congratulations on your purchase of the Extech 407780 Integrating Sound Level Meter.
The 407780 with programmable integrating time provides precise linearity over a wide
range (100dB) and displays Leq, SEL, SPL, MAX-L, and MIN-L measurements.
Response time (FAST, SLOW, and IMPULSE) and frequency weighting (A and C) are
programmable. The analog output (AC and DC) can be used with headphones, chart
recorders or other devices to store data. The 407780 with PC Interface and real-time
calendar clock datalogs (stores) up to 32,000 readings for later transfer to PC. Careful
use of this meter will provide years of reliable service.
Meter Description
1
2
3
7
8
4
9
5
10
11
6
12
2
Model 407780 Version 2.1 09/07