7. Power supply
18
7.5
Switching ON / OFF, reinitialization
To
switch ON
press key(s) :
ON PROG
r
(6)
located in the middle of the cursor
block. The measuring menu most recently selected always appears first in the
display.
To switch OFF press and hold down the same key(s)
ON PROG
r
. After the device
is switched off the real-time clock continues to run and all saved values data
and settings are retained intact; (see 7.6).
If interference (e.g. electrostatic) or a malfunction (e.g. battery failure) causes
the device to behave abnormally, the device can be reinitialized. To activate
Re-
set
press
F1
r
when switching on. To restore all device programming (including
device designation, user menus, process control, etc.) to the factory default set-
tings press
F2
when switching on. In so doing many parameters will be lost or
be restored to their defaults : Date, Time-of-day, Language = German, Illumina-
tion = off, Device address = 00, Atmospheric pressure = 1013 mbar, Tempera-
ture compensation = 25°C, Hysteresis =10, Measuring rate = 2.5 mops semi-
continuous. Only the programming of the sensors in the ALMEMO
®
connectors
remains unaffected.
7.6
Data buffering
The sensor's programming is stored in the EEPROM on the sensor connector;
the internal data memory and the device's calibration and programmed param-
eters are stored in the EEPROM on the instrument itself, all on a fail-safe basis.
Date and time-of-day settings and the individual values memory are retained
intact if the device is just switched off but are lost when the device is reset or
the batteries are replaced.
