407750 Datasheet, PDF (6/8 Pages) Extech Instruments Corporation. – Digital Sound Level Meter

Analog Outputs
The meter includes an AC and a DC analog output. These outputs are proportional to the
displayed sound level and are ideal for use with chart recorders and dataloggers. The AC
output is 0.707V rms full scale and the DC output is 10mV per dB. The labeled 3.5mm
output mini-plugs are located on the bottom of the instrument.
RS-232 Output
The meter includes an RS-232 PC interface jack. This PC interface allows the meter to
store and display readings on a PC as they are recorded. The interface cable and software
for data acquisition are sold separately. Detailed instructions are provided with the
software.
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Model 407750 Version 2.1 February 2004