407780 Datasheet, PDF (11/13 Pages) Extech Instruments Corporation. – Integrating Sound Level Datalogger

Start Recording
1. Connect the sound level meter to a PC via the supplied RS-232 cable.
2. Use the supplied Windows^TM software to activate communication.
3. Set the sampling rate and the measurement time in the supplied software. The meter
can now record remotely (disconnected from the PC) at the rate selected.
4. Press the RECORD/ERASE key to put the meter in Record Standby. The RECORD
display icon will appear on the display.
5. Press the RUN/PAUSE key to start data recording. The RECORD icon will flash once
per second. One reading will be stored for each sampling interval (set in the sampling
rate parameter above).
6. When the measurement time expires, the meter stops recording and the RECORD
display icon switches off.
7. The recorded data can then be down-loaded to the PC using the supplied Windows^TM
software.
Erasing Records
1. When the meter’s memory is full, the FULL display icon will appear on the display.
2. Press and hold the RECORD ERASE key for 3 seconds to erase all records. The FULL
display icon will switch off when the data is cleared.
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Model 407780 Version 2.1 09/07