Calibration Notes; Skipping Calibrations; Losing Power During Programming - Progress Direct Systems Volt Tattler 2 Owner's Manual

Calibration Notes

Interrupting the power to the Volt Tattler 2 at any time will cause it to restart, sound a Morse 'R' (.-.)
and enter the normal operation mode. Thresholds are saved only during calibration when you hear the
Morse "R" beep upon releasing the Programming Button. Each threshold is saved only when the
particular calibration (High or Low) is done and the 'R' (.-.) is sounded. If a calibration is aborted (short
press on the Programming Button during calibration or power off) any thresholds that have not
generated the 'roger R' (.-.) will keep the original threshold from before calibrations were started.
No matter how the threshold calibrations end up after programming one can always start over and
program each threshold.

Skipping Calibrations

You may only want to calibrate one threshold. Perhaps Volt Tattler 2 did not accept one of the
calibration attempts (Morse '?', ..--..). Maybe you just want that high threshold a bit lower and leave the
low threshold alone. You can skip past any calibration that you don't wish to change with a single short
press (< 1 second) on the Programming Button. In fact if you get confused as to where you are in the
calibration process you can simply short press the Programming Button two or more times to return
VoltTattler 2 to the normal monitoring mode. Of course cycling the power will also return the Volt
Tattler 2 to its normal monitoring mode. Any calibrations that had been completed successfully (that
received the R, .-.) will be saved.

Losing Power During Programming

As mentioned in the Calibration section, losing power during either the high or low threshold Program
Button press may cause the Volt Tattler to store bad results into its thresholds. This can have
unpredictable results. It may cause invalid thresholds. These can cause the Volt Tattler to send
repeated Morse Question Marks (..--..) and not work properly.
If this does occur it might be possible to get Volt Tattler functioning again by simply running through the
calibrations. If you can get both high and low thresholds to take a calibration, Volt Tattler may come
back into function. If not the microcontroller will need to be replaced.