IM 12B6B3-E-H
Operation 4-1
4. OPERATION; DISPLAY FUNCTIONS AND SETTING
4-1. Operator interface
This section provides an overview of the operation of the EXA operator interface. The basic procedures for
obtaining access to the three levels of operation are described briefly. For a step-by-step guide to data
entry, refer to the relevant section of this instruction manual. Figure 4-1 shows the EXA operator interface.
LEVEL 1: Maintenance
These functions are accessible by pushbutton through a flexible front cover window. The functions make up
the normal day-to-day operations that an operator may be required to complete. Adjustment of the display
and routine calibration are among the features accessible in this way. (See table 4-1).
LEVEL 2: Commissioning
A second menu is exposed when the EXA front cover is removed and the display board is revealed. Users
gain access to this menu by pressing the button marked
*
in the lower right of the display board. This menu
is used to set such values as the output ranges and hold and wash features. It also gives access to the ser-
vice menu. (See table 4-1).
LEVEL 3: Service
For more advanced configuration selections, press the button marked
*
, then press “NO” repeatedly until
you reach SERVICE. Now push the “YES” button. Selecting and entering “Service Code” numbers in the
commissioning menu provide access to the more advanced functions. An explanation of the Service Codes
is listed in chapter 5 and an overview table is shown in chapter 10.
Table 4-1. Operations overview
Routine Function Chapter
Maintenance AUT CAL Calibration with programmed buffer solutions 6
MAN CAL Calibration with other buffer solutions 6
SAMPLE Grab sample calibration 6
DISPLAY Read auxiliary data or set message display 4
SETPOINTS Adjust alarm setpoints (when activated) 5
WASH Manual wash start (when activated) 5
MAN.IMP Manual start of impedance check 5
TEMPERATURE Select automatic or manual compensation 5
HOLD Switch hold on/off (when activated) 5
Commissioning SETPOINTS Adjust alarm setpoints 5
RANGE Adjust the output range 5
SET HOLD Activate the hold function 5
WASH Activate and configure the wash timer 5
Service SERVICE Fine tune the specialized functions of the 5
(Access to coded entries converter
from the commissioning
level)
NOTE:
All three levels may be separately protected by a password. See Service Code 52 in chapter 5 Service
Code table for details on setting passwords.
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