User Guide

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26
DIAGNOSTIC MODE
C 114 facilitates operations by providing a
diagnostic mode. In this mode, user can set
or verify different parameters necessary to
ensure optimum performance of the meter.
To enter the diagnostic mode, turn the meter
on and momentarily press ALT and CAL to-
gether. The display will show four dashes to-
gether with “d 00”:
Using the , and keys, select the re-
quired diagnostic mode and press the key.
The meter will execute one of the following
user-diagnostic functions:
10 Customizes automatic shutdown
11 Selects User or Factory functions
12 Turns logging mode on or off
21 Calibrates span in turbidimetric mode
31 Calibrates span in colorimetric mode
40 Clears the logged memory
The following diagnostic modes are reserved
for authorized service technicians:
00 Shows the Blank level in colorimetric mode
01 Shows the Sample level in colorimetric mode
02 Shows the Dark level in colorimetric mode
05 Shows the Ground voltage
06 Shows 5V on-board level
07 Shows battery voltage level
08 Shows 1.23V reference voltage level
09 Shows -5V on-board level
99 Shows software version number
+
Subsequently, the up-
per display will show
“----”, indicating that the
meter is calibrated and
ready to measure the
concentration of an unknown sample.
By pressing the CAL key during
calibration, user can leave the cali-
bration mode at any time without
changing the previously stored calibration data.