Watts HF scientific CLX- XT - 5.5 Security Access Feature

CLX-XT (28652) Page 16
REV 5 (5/2020)
5.4 Operating Screens
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 shown to the right indicates that the system
has just been started or just entered AUTO mode from
Service mode and no readings have been taken yet.
Please note that calibrations will not be allowed until a reading is posted.
5.5 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 7.5 Enabling the Security Access for more information.
5.6 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 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 9.1
CLX-XT Fault Detection. In these instances the white LED blinks at a constant rate
dependant 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.