Operation and configuration
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isoLR275_D00127_00_M_XXEN/07.2018
5.5.4
Setting the repetition time for the automatic self test
(Autotest: 24h)
The time for the repetition of automatic self tests can either be set to 1 hour
or to 24 hours or can be deactivated.
Factory setting = 24 h
5.5.5
Setting the real-time clock (Clock)
The time setting is the time base for the memory and the automatic self test.
In case of supply voltage failure, the set real-time clock keeps running for ap-
proximately 30 days. When the device is switched on after this period, a flas-
hing "C" appears on the display and the clock has to be set again.
5.5.6
Setting the date (Date)
Not only is the time of day required but also the date has to be set for the his-
tory memory. In the event of supply voltage failure, the date function is not in-
fluenced for at least 30 days. When switching the device on at a later date, a
new setting of the real-time clock and the date is required.
5.5.7
Specifying the start-up time for the automatic self test
(Test)
When the 24 h self test is activated in the ISO ADVANCED menu, it is possible
to set the time (hour) for carrying out the self test by means of the "TEST:
12:00" menu item. Then the self test is automatically carried out once a day at
a given time. When the 1 hour auto test has been selected, the self test is car-
ried out at every full hour.
