User Manual

Model 407730 Version 1.3 June 2004
5
Specifications
Display LCD with bargraph
Microphone 0.5” (10mm) Electret condensor
Measurement Bandwidth 300Hz to 8KHz
Measurement Range 40 to 130dB (A wtg), 45 to 130dB (C wtg)
Frequency weighting ‘A’ and ‘C’ (selectable)
Accuracy / Resolution ± 2dB (under reference conditions) / 0.1dB
Response time Fast: 125 milliseconds / Slow: 1 second
Calibration source 1KHz sine wave @ 94 or 114dB
AC output 0.707Vrms full scale
Power 4 AAA Batteries
Battery life 30 hours (typical); low battery indicator alerts user
Automatic power off After approx. 20 minutes
Operating temperature 32 to 122
o
F (0 to 50
o
C)
Operating humidity 10 to 90% RH
Storage temperature -4 to 140
o
F (-20 to 60
o
C)
Dimensions/weight 9 x 2.3 x 1.7” (230 x 57 x 44mm) / 6oz (172g)
Warranty