15
Recording Data to Internal Memory
When operating normally, PM1904 records current DeR and De
values to the internal memory. The interval of recording can be
set within the values from 1 to 1000 minutes using the supplied
User Software. The Manufacturer’s preset value is 1 hour.
all data recorded into the instrument’s memory are time stamped
with the internal instrument clock. When the instrument is
connected to the User Software over the connector for the first
time, it will prompt to synchronize the internal PM1904 clock
with the iPhone
®
. It is recommended to synchronize time with
the iPhone
®
every time data is downloaded from PM1904 into
the iPhone
®
. otherwise the timestamps of the De and DeR
readings might not be correct.
IMPORTANT!
After complete battery discharge (no LED indication) the internal
instrument time as well as data recording stops. Thus after recharging
the instrument it is recommended to synchronize time with an
iPhone
®
in order to have proper timestamps of the DER and DE
readings in the instrument non-volatile memory.
