
© 2009 Cygnus Automotive Limited
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2.2 Applying Power to the Meter
The MR500 is designed for permanent connection to the vehicle’s
power.
However, when you first connect power to the meter, it completes a
series of power-up tests.
During these tests, the MR500 first illuminates the symbol for 2
seconds before illuminating all segments for two seconds emitting a
"beep". When the checks are complete the MR500 enters ‘On’ mode.
If the symbol remains lit and the MR500 does not enter ‘On’ mode
then consult your Cygnus Dealer.
If the date and time have not been set the MR500 will automatically
select the Set Time option (consult your dealer for details). After the
time has been set it will enter the ‘For Hire’ mode.
Figure 2: Display during Power-Up self test
2.3 The Internal “Battery”
The MR500 has an internal battery which maintains the internal
clock when power is removed.
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❢ If the time is not maintained when power is removed, the
internal battery will need to be replaced. See your dealer.
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