Adjusting The Voltmeter Accuracy - HindlePower AT30 SERIES Operating And Service Instructions

2.3.7. Adjusting the Voltmeter Accuracy

The AT30 voltmeter is adjusted at the factory to display the actual output
voltage within ±0.25%. If you replace any component that affects meter
accuracy, such as the Main Control PC Board (A1) or R4, you should
readjust the meter. This adjustment procedure is different from all others,
because the meter reading remains constant, while the output voltage of
the AT30 changes. Do this adjustment with a fully charged battery and
with no load connected.
First, enter Edit Mode to adjust the float voltage to the desired value. See
Section 2.3.2 for instructions on setting the float voltage. Second, press
and hold the
The DC VOLTS
flashes the output voltage reading. Measure the output voltage of the
AT30 using a dc meter accurate to ±0.25% or better.
While watching the meter connected to the AT30 output (not the front
panel meter), press the
matches the float setting on the front panel meter.
Each time you press
a small amount. Continue to press
voltage agrees with the front panel reading within ±0.25%
Allow one or two seconds for the output voltage to
stabilize each time you press the
When you are finished adjusting the output voltage, the AT30 waits five
(5) seconds, then the display returns to normal operation.
key, then press the
UP
indicator will light, and the meter display
METER MODE
or
UP DOWN
or
UP DOWN
NOTICE
OPERATING THE AT30
key.
EQLZ MTHD
key until the actual output voltage
, you change the AT30 output voltage by
or until the actual output
UP DOWN
or key.
UP DOWN
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