Advanced Features; Data Hold; Min/Max/Avg Data Recording; Auto Power Off - Extech Instruments 407510 User Manual

1.800.561.8187

Advanced Features

Data Hold

Press the Data Hold key to freeze the displayed value. The LCD will display DH for Data Hold mode
along with the held reading. Press the Hold key again to release the data hold function.

MIN/MAX/AVG Data Recording

When selected, the Data Recording function records the Min, Max, and Average readings. To start a
data recording session:
1. Press the RECORD key once. The REC indicator will appear on the display and the meter will
begin to record the lowest (min), highest (max), and average (avg) readings.
2. To recall the data, press the RECALL key once. The MAX indicator will appear along with the
highest reading recorded since the RECORD key was pressed.
3. Press the RECALL key again to view the MIN value.
4. Press the RECALL key again to view the AVG reading.
5. To exit the Record mode, press the RECORD key again. The display indicators REC, MIN,
MAX, and AVG will disappear.

Auto Power OFF

The meter includes an Auto shut off feature that preserves battery life. The meter will automatically
turn off if no function button is pressed in any 10 minute period. To disable this feature press the
RECORD key to engage the record function.

LCD Contrast Adjust

It may be necessary to adjust the display contrast due to a change in viewing angle or voltage drift.
Use the LCD Contrast adjustment located on the right side of the meter to set the preferred
contrast.

CPU Reset

Certain improper keystroke sequences can cause the meter to hang and become inoperable. The
following procedure will reset the meter.
1. Slide the O /DO switch to the O
2
2. Turn the meter OFF and disconnect the DO probe.
3. Press and HOLD the O CAL key and then press the POWER key.
2
4. Release the O CAL key and then press the ZERO key.
2
5. Connect the DO probe.
6. Wait several minutes for the reading to stabilize and then press the O2 CAL key.

RS-232 PC Interface

The meter includes a RS-232 serial data port. For streaming of data to a PC via the RS232 Output
jack, the optional 407001-USB kit (RS232 to USB cable and driver CD) along with the 407001
software (available free at www.extech.com) are required.
www.
position.
2
5 407510-en-GB_V7.7 11/15
.com
information@itm.com