Model 421509 Version 1.1 09/04
9
RS-232 PC Interface
The Model 421509 Thermometer is supplied with a sophisticated Windows® software
package on disk. A communications cable (meter to PC) is also supplied. The program allows
the user to operate the meter remotely and view the readings from all three LCD fields on the
PC monitor. The software also permits measurement data to be stored as text files on a PC.
The data files can then be exported to spreadsheet or other programs for further manipulation
(graphing, sorting, filing, etc.).
Connecting the Meter to a PC
Connect the Optical Interface connector to the 421509 Thermometer. The “IR2” label should
be facing up. Connect the 9-pin female connector to the 9-pin serial PC port (COM1-4).
PC Requirements
• 486-33 IBM compatible PC or better
• One CD-ROM drive
• Available serial port
• Windows 95, 98, 2000, NT, ME, XP Operating System
Installing the Windows Application Program
1. Place the supplied software CD in the PC CD-ROM drive and run setup.exe
2. Change the path if necessary or choose the “Finish” button to install the program to its
default location.
3. Launch the program by double clicking the program file in the location where it was
saved during installation.
4. Remember not to run the supplied software until the meter is properly connected to the
PC as described earlier.
Software Control Panel Description
Button Description
T1 INPUT Open the T1 input control window to activate function
T2 INPUT Open the T2 input control window to activate function
T1-T2 Open the T1-T2 control window to activate function
RECORD Open the recording control window to activate data acquisition
READ DATA Downloads the logged data from the meter
START Press the “START” button to activate the meter’s serial port output and
then the auto-power-off function will be disabled.
STOP Press the “STOP” button to stop the meter’s serial port output and then
the auto-power-off function will be enabled.
WORKING The “WORKING” sign will blink when the meter is communicating with
the PC, otherwise “RS-232ERR” will be displayed.
COM PORT Select serial port (COM1 to 4)
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
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