41
40
• Press or to cycle through the data forward or back-
wards respectively.
Note
In any moment, by pressing LCD or CAL DATA the meter will
return to the regular operating display.
• Press or to view the time of last calibration. The sec-
ondary display will show "HOU".
• Press or again to view the cell con-
stant at the time of the last calibration.
The secondary display will show "CEL".
• Press or again to return to the first CAL DATA display
(date) at the time of last calibration.
FAULT CONDITIONS AND SELFTEST PROCEDURES
The fault conditions below may be detected by the software:
• EEPROM data error;
• I2C internal bus failure;
• date lost;
• code dead loop.
EEPROM data error can be detected through EEPROM test proce-
dure at startup or when explicitly requested using setup menu.
When an EEPROM error is detected, to the user is given the
option to perform a reset of EEPROM.
Note
When an EEPROM reset has been performed
the calibration data are reset to default (every
range). An intermittent CAL will blink on the
display to advise the user of this status.
Note
When adjusting values using the or keys it is important
to allow for sufficient response time (up to 30 seconds)
The table below lists the values of output codes along with
the calibration point values (which are the analog output
minimum and the analog output maximum) as indicated
on the display.
The secondary display indicates the current calibration point
value, while the primary display indicates the current cali-
bration type.
LAST CALIBRATION DATA
The meter can display the following last calibration data:
• Date
• Time
• Cell constant
While displaying these data, the controller remains in con-
trol mode. The data are related to the selected range only.
The procedure below indicates the flow. Displaying of the
items follows the above sequence.
• To begin the cycle press CAL DATA. The last calibration
date will appear on the primary LCD as DD.MM format,
while the secondary display will show the year.
If the meter has never been calibrated or an EEPROM
reset has occurred, no calibration data are shown when
CAL DATA is pressed. The “no CAL” message will blink
for a few seconds, then the meter skips back to normal
mode.
