Progress Direct Systems Volt Tattler 2 Owner's Manual page 31

1. Connect the variable power supply and the voltmeter to the VoltTattler 2 in parallel as in the
accompanying diagram. VoltTattler 2 will begin blinking the Green LED and send a Morse "R"
(.-.). That "R" may be followed by other LEDs flashing and continuous "H"s (.... .... ....) or "L"s
(.-.. .-.. .-..) depending on the supply voltage and limits currently set in the VoltTattler 2 unit.
This is no matter as we plan to calibrate the unit.
2. Press and hold (>3 seconds) the Program Button until VoltTattler 2 beeps once (Morse 'E'). This
puts the VoltTattler into the calibration mode for setting the high alarm threshold. Upon
releasing the button the VoltTattler 2 will begin repeatedly sending Morse 'H'(.... .... ....)
indicating that you are setting the high threshold.
3. AVOID LOSING POWER DURING THIS STEP. There is a very small possibility that LOSING
POWER HERE WILL MAY RESULT IN UNPREDICTABLE CONSEQUENCES ON THE VOLT TATTLER
OPERATION. Adjust the power supply voltage to the desired high alarm threshold as indicated
on the voltmeter. Once the voltage has been set to the desired high threshold press and hold
the Program Button again for more than 3 seconds. When you hear the single beep (Morse 'E')
listen as you release the button. If VoltTattler 2 sends the 'R' (roger, .-.) the new threshold was
set properly. If VoltTattler sends a Morse Question Mark '?' (..--..) the high threshold was not
set. This is probably because you tried to set the high threshold at or below the low threshold.
VoltTattler 2 does not allow that. You will need to move on to finish the low calibration then
return here and repeat setting the high threshold.
4. AVOID LOSING POWER DURING THIS STEP. There is a very small possibility that LOSING
POWER HERE WILL MAY RESULT IN UNPREDICTABLE CONSEQUENCES ON THE VOLT TATTLER
OPERATION. Once the high threshold calibration has been completed, successfully or not, the
VoltTattler 2 will immediately proceed to setting the low threshold. Now Morse 'L' (.-.. .-.. .-..)
will be sent continuously indicating that the low threshold is being calibrated. Adjust the power
supply to the desired low voltage threshold as indicated on the voltmeter. Once the voltage is
set to the low threshold press and hold the Program Button for more than 3 seconds. After the
Morse 'E', listen for the next character as you release the Programming Button. Morse 'R' (.-.)
indicates that the new low threshold was taken. Morse '?' (..--..) indicates that the attempted
order was incorrect (i.e. low threshold >= high threshold) and that old low threshold will remain
in effect.
5. When Morse 'R' (.-.) has been heard for either or both calibrations that new threshold will now
be in effect. Once calibrations are completed VoltTattler 2 will frequently sound the last
threshold that was adjusted. This is simply because the power supply will be at that threshold.
Note that the LEDs will flash according to the last calibration completed. A short press on the
Programming Button will clear the Yellow and Red LEDs. Adjust the power supply through the
working range, beyond both thresholds and observe the proper functioning of VoltTattler 2 to