54
The colon is a useful indicator for the correct position of
squares.
Note
A maximum of two keys may be pressed simultaneously to
be properly recognized.
To exit the keyboard test procedure press LCD, CAL and
SETUP simultaneously.
EEPROM SELFTEST
The EEPROM selftest procedure involves verifying the stored
EEPROM checksum. If the checksum is correct the “Stored
data good” message will be shown for a few seconds before
exiting selftest procedure.
If not, the instrument will display the message “Stored data
error - Press
to reset stored data or
to ignore”.
If
is pressed the EEPROM selftest procedure terminates
with no other action. Otherwise, EEPROM is reset with
default values from ROM as when a device with a virgin
EEPROM is switched on.
During EEPROM reset a blinking mes-
sage “Set MEM” is shown on the LCD.
At the end of this operation all the
parameters are reset to their default
values. Calibration data is also reset.
For this reason the "CAL" flag blinks
until the pH calibration is performed.
