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After entering the cali-
bration mode, the dis-
play will show the first
point of the previous
calibration with the most
significant digit blinking.
Using the , and
keys, choose the
concentration of the first calibration standard.
Insert the known standard into the cuvet holder
and make sure that the notch is positioned
securely into the groove. Press the
key.
The display will indicate sample in progress.
After the first calibra-
tion point is memo-
rized, the LCD will indi-
cate the second point
of the previous calibration with the most sig-
nificant digit blinking.
Using the , ,
keys, choose the known
concentration of the second calibration stan-
dard.
Insert the standard into the cuvet holder and
make sure that the notch is positioned se-
curely into the groove. Press the
key. The
display will blink “SIP” again.
After the second calibration point is memo-
rized, the unit will store the calibration data,
time and date in the EEPROM while intermit-
tently indicating “CAL” and “Stor” for several
seconds.
Using the and keys,
set the lower part of
the LCD to “d 11” and
then press the
key.
The
key is used as a toggle function in
this mode and allows the user to select be-
tween USER (USR) or FACTORY (FCT) pro-
grammed functions.
Select the USER mode and press ALT and
CAL keys together to leave the diagnostic
mode. The display of the meter will indicate
four dashes together with a number 0 or 1 on
the lower part of the LCD.
Press and hold the ALT and CAL keys to-
gether for at least three seconds. The upper
display will start flashing “CAL” for approxi-
mately three seconds.
To confirm entry into the calibration
mode, press the CAL key again
while “CAL” is still blinking.
If the CAL key is not
pressed, the upper row
of the display will show
“----”, indicating that the
calibration mode was
not entered. In which case, hold down the
ALT and CAL keys together for 3 seconds to
restart the procedure.
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