11
Please note that these operating screens cannot
be seen except with the cabinet door open and the
instrument in maintenance bypass mode. See section
5.3 for more information on this.
During normal operation, the instrument will have the arrow beside
AUTO
highlighted with the current scale displayed on the lower row of
the display and the measured reading on the upper row of the display
(see screen shown).
The screen depicted indicates that the system has just been started
or just entered
AUTO
mode from Service mode and no readings have
been taken yet.
NOTICE
Please note that calibrations will not be allowed until a reading is
posted.
6.3 Security Access Feature
The instrument is equipped with a security access code feature that
can be activated in the configuration mode. If the security feature is
enabled, the screen shown in the illustration below will appear when
the
MODE/EXIT
button is pressed.
The security code (333) must be entered to gain access to
CAL
or
CONFIG
menus. Notice that the first number in the code is flashing.
The flashing indicates that this is the number to be changed. Use the
or
arrows to select the first of the three numbers in the code and
then press the
button to accept the first number of the code. Now
enter the second number in the code. Proceed as with the first number
followed by
. Then repeat the process for the third number in the
access code, and finish with the
button.
If the valid access code has been selected, the instrument
will be directed to the calibration mode. If the wrong access
code is selected, the instrument will return to the AUTO
mode. Refer to section 8.4
Enabling the Security Access
for more information.
6.4 The White LED
A white LED is used to illuminate the measurement cuvette for easy
viewing of the instrument operations. During the Zeroing portion of
the cycle and the Measurement portion of the cycle, when the green
LED is active, the white LED is turned off to lower interference. This is
normal operation for the instrument and does not represent an error
or problem.
The white LED is also used to draw attention to a problem
as described in section 10.1
CLX-Ex Fault Detection
. In
these instances the white LED blinks at a constant rate
dependent on the severity of the problem, but is still turned
off as described above. Please note that any fault is always posted to
message queue on the lower portion of the LCD.
