407764 Datasheet, PDF (6/12 Pages) Extech Instruments Corporation. – Datalogging Sound Level Meter

DataLogging
The internal memory of the meter can store up to 128,000 reading in up to 255 recording
sessions (called sets). Prior to beginning data storage, the meter’s real time clock and the
datalogger’s sample rate must be set using the supplied software. The clock is set in the
Control Panel window and the sample rate is set in the Logger window.
1. Set the real time clock (if required).
2. Set the sample rate (if required).
3. To record data, press & hold the RECORD key for 3 seconds until the “RECORD” symbol
flashes once per second on the LCD. Press the Record key again to stop recording data.
4. If the recording memory is full, the “FULL” symbol will appear on the LCD.
5. To clear the recording memory press and hold the RESET key and power the meter. The
LCD will show the “dEL” icon letting the user know that the datalog memory has been
cleared.
6. To Download or Record data via a PC refer to the PC Interface section below.
PC Interface
Connecting the Meter to a PC
Refer to Figure 5. Connect the 9-pin male connector to the Sound Level Meter, and connect the
9-pin female connector to the 9-pin COM1 PC port.
PC Requirements
• 486 IBM compatible PC or better
• One 3.5" high density disk drive
• Available serial port.
• 4M Bytes H.D. storage space
(figure 5)
• EGA or VGA monitor
• Windows 95, 98, 2000, NT, XP Operating System
• 3-button or 2-button Microsoft compatible
mouse. At least a 486 PC is recommended
for displaying all software windows with a
fast sampling rate (such as 1 second). If a 386/25 PC is used, you can only open one
window (LIST, GRAPH, ANALOG) at a time when using fast sampling rates.
Installing the Windows Application Program
Follow the instructions on the disk for installation. When installing the software, please use the
Visual Basic version (VB) on installation CD.
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Model 407764 Version 2.1 9/07