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Deploying the Unit
For long-term data logging, General advises using the included AC adaptor to avoid having
the batteries that normally power the meter fully discharge before logging is complete.
To avoid having the meter's Auto Power Off (APO) function activate before a data logging
session is completed, you must manually disable the function. To do so, with the meter
powered off, power it on in a special way by pressing the holding the PWR and HOLD
buttons at the same time. When the meter powers on, a small n will briefly appear on the
LCD.
If the meter powers off for any reason while logging, captured data is not lost because it is
stored in nonvolatile memory.
During logging, the 10-segment vertical bar graph at the bottom left of the meter's LCD
(see below) both confirms that logging is taking place (if the top bar is flashing) as well as
how much memory remains available to store more data. After logging has stopped (see
next section), the presence of bars on the bar graph can serve as a reminder to download
stored data logs to your PC and save them there, freeing up the meter's memory for the
next logging session.
If you have used Key Start or Rollover data logging
mode, once you have downloaded and saved data logs
to your PC you need not reconfigure the VOC08 to start
another logging session; all you need do is press and
hold the BKLT button. Remember to download the
data from the previous logging session before starting
a new session.
If you have chosen Real-time start mode, the bottom section of the data logging program
will appear different than in other start modes. While the meter is recording, a green fan
icon at the left edge will flash, and the DOWNLOAD button that normally appears at the
right edge will be re-labeled STOP.
Downloading, Viewing and Analyzing the Data
To stop data logging in Real-time start mode, press the virtual STOP button on the data
logging program. In Schedule mode, logging will stop at the programmed date/time. In Key
Start mode, you stop data logging by pressing and holding the BKLT button on the meter
for at least two seconds. In Rollover Mode, the BKLT button cannot be used to stop
recording, but it can be used to start a new logging session. To stop recording in Immediate
or Rollover mode, press the virtual DOWNLOAD button on the data logging software.
Recording More bars,
6
Memory
more data
full
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