Extech Instruments 407780 User Manual

Model407780‐ENv2.31/14
11
Specifications
General Specifications
Applicable Standards IEC 651 / 804 type 2 and ANSI S1.4 type 2
Measurement types SPL, SEL, Leq, MAX-L, and MIN-L
Measurement range 30 to 130dB
Frequency Range 31.5Hz to 8kHz
Frequency weighting ‘A’ and ‘C’
Response time FAST, SLOW, and IMPULSE selections
Linearity range 100dB
Display resolution 0.1dB
Accuracy ±1.5db (94dB @ 1kHz)
Microphone 0.5” Electret Condensor
Numeric Display 4-digit LCD
Display update rate Twice per second
Bargraph Display 4dB per step (over 100dB range) with 50 segments
Bargraph update rate 16 times per second
Display warnings ‘OVER’ and ‘UNDER’ range status indicators
Analog outputs DC: 10mV per dB; AC: 2Vrms full scale
Power supply Four (4) 1.5V ‘AA’ batteries (optional AC adaptor)
Battery life 20 hours (approx.)
Operating conditions 41 to 104
o
F (5 to 40
o
C); 90% Relative Humidity
Storage conditions 14 to 140
o
F (-10 to 60
o
C); 75% Relative Humidity
Dimensions 10.4 x 2.8 x 0.8" (265 x 72 x 21mm)
Weight Approx. 10.9 oz. (310g)
Supplied Material
Adjustment screwdriver
Batteries (four ‘AA’ 1.5V cells)
Operation Manual
CD with Windows
TM
Software and software manual
RS-232 Interface cable
Windscreen
3.5mm plug for analog output access

Extech Instruments 407780 Specifications

General

Brand	Extech Instruments
Model	407780
Category	Data Loggers
Language	English

Summary

Introduction and Meter Description

Device Components Overview

Details and illustration of the sound level meter's components, numbered 1 through 19.

Display Description

Display Elements Explained

Detailed explanation of various icons, indicators, and readings on the meter's LCD.

Operation Modes and Functions

Integrating Sound Level Meter (LEQ/SEL)

Instructions for using the meter in LEQ and SEL modes, including measurement setup.

Sound Pressure Measurements (SPL)

Procedure for taking SPL readings and using the MIN/MAX function.

Setup and Powering

Setting the Real Time Calendar Clock

Step-by-step guide to configure the internal clock and calendar.

Powering the Meter

Information on installing batteries and using the AC adapter.

Maintenance, Calibration, and Outputs

Calibration Procedure

Steps for calibrating the sound level meter using an acoustical calibrator.

Maintenance and Cleaning

Guidelines for proper care and cleaning of the instrument.

Analog Output Details

Explanation of AC and DC analog output terminals and signal usage.

Datalogging Operations

Data Recording and Erasing

Instructions for starting data recording and erasing stored records.

Specifications and Support

General Specifications

Technical details including measurement range, accuracy, and environmental conditions.

Supplied Material

List of items included with the sound level meter.

Warranty and Services

Product Warranty Information

Details on the limited warranty for the Extech device.

Customer Care and Support

Information on calibration, repair, and technical support services.