Data Logging - Extech Instruments 407764 User Manual

DataLogging
The internal memory of the meter can store up to 16,000 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.
(figure 5)
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 C0M1 PC port. If C0M1 is used by the mouse,
connect the 25-pin female connector to the 25-pin COM2 PC port (you'll need to use the
included 9- to 25-pin adapter).
PC Requirements
486 IBM compatible PC or better
One 3.5" high density disk drive
Available serial port.
4M Bytes H.D. storage space
EGA or VGA monitor
Windows 95, 98,2000 NT 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.
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Installing the Windows Application Program
Follow the instructions on the disk for installation.
Model 407764 Version 1.3 October 2001