Introduction
Congratulations on your purchase of the Extech 407768 Sound Level Meter. This Auto
Range Sound Level Meter meets ANSI and IEC Type II accuracy standards. Professional
features include programmable Frequency Weighting and Time Response, Min/Max
Memory, Max Hold, Analog output, and RS-232 PC Interface. Careful use of this meter will
provide years of reliable service.
Specifications
Display
Frequency bandwidth
Microphone
Output terminals
Measurement ranges
Frequency weighting
Applicable standards
Resolution
Maximum/Minimum record
Data Hold
Max Hold
Response time
AC Analog output
Power
Operating temperature
Operating humidity
Dimensions / Weight
5 Digit LCD with overload, low battery and multifunction
indication
31.5 Hz to 8 KHz
0.5” Electret Condensor Microphone
Optically isolated RS-232 port and AC output
Auto Range: 30 to 130dB
Manual Ranges: 30 to 80dB, 50 to 100dB, 80 to 130dB
‘A’ and ‘C’ (Programmable)
ANSI / IEC Type 2
0.1dB
Highest and lowest readings are stored for later recall
Displayed reading is held when HOLD key is pressed
Highest reading displayed only
Fast: 125ms / Slow:1s (Programmable)
0.5VAC rms full scale (600Ω output impedance)
9V Battery; Consumption: 6mADC approx.
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32 to 122 F (0 to 50 C)
Less than 80% RH
10.6 x 2.7 x 1.1" / 0.63 lbs. (268 x 68 x 29mm / 285g)
Meter Description
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Microphone
LCD Display
Power, Hold, and Min/Max buttons
Max, Weighting, Response Time, & Range buttons
AC output jack
Calibration potentiometer
RS-232 PC interface jack
Battery compartment, tilt stand,
and tripod mount on rear
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407768 Version 2.0 06/06
EXTECH [ EXTECH INSTRUMENTS CORPORATION. ]
