Extech Instruments TM500 User Manual page 9

Datalogging and PC Interface
Types of Data Recording
 Manual Datalogging: Manually log up to 99 readings onto an SD card via push‐button press.
The sample rate must be set to 0 to implement this mode.
 Automatic Datalogging: Automatically log data onto an SD memory card where the number
of data points is virtually limited only by the card size. Readings are logged at a rate specified
by the user from 1 to 3600 seconds.
 RS‐232/USB: The meter includes an RS‐232/USB PC interface jack located on the lower right
side of the meter under the snap‐off compartment cover. For streaming of data to a PC via
the RS232 Output jack, the optional 407001‐USB kit (USB cable and driver CD) along with the
407001 software are required.
SD Card Information

Insert an SD card (from 1G size up to 16G) into the SD card slot at the bottom of the meter.
The card must be inserted with the front of the card (label side) facing toward the rear of the
meter.

If the SD card is being used for the first time it is recommended that the card be formatted
and the logger's clock set to allow for accurate date/time stamping during datalogging
sessions. Refer to the Setup Mode section for SD card formatting and time/date setting
instructions.

European and USA numerical formats differ. The data on the SD card can be formatted for
either format. The meter defaults to USA mode where a decimal point is used to separate
units from tenths, i.e. 20.00. The European format uses a comma, i.e. 20,00. To change this
setting, refer to the Setup Mode section.
Manual Datalogging
In the manual mode the user presses the LOG button to manually log a reading onto the SD card.
1. Set the sampling rate to '0' seconds as described in the Setup Mode section.
2. Press REC button to turn on manual record mode. The REC icon will appear in the upper
left corner of the display. The lower portion of the display will show p‐n (n = memory
position number 1‐99).
3. Press the ENTER button momentarily to log a reading into memory. The LOGGER icon will
flash each time a data point is stored (the SCAN SD icon will appear when the meter
accesses the card).
4. Advance to the next memory location using the up arrow ▲ button.
5. To exit the manual datalogging mode, press and hold the REC button for at least 1.5
seconds.
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TM500-EU-EN v1.1 12/13