Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer - Manual (Page 39)

IM 12J05C01-01E
4-2 Operation: Display Functions and Settings
ENT
FAIL TEMP.MAN
YES NO
ENT
NO MODE YES
MODE
%sat
ppb
CAL
DISPLAY
ppm
HOLD
OUTPUT
SET HOLD
SERVICE
Fail flag
Commissioning
function menu
Commissioning mode
access key
Measure/Maintenance
mode key
Broken line indicates area that can be
seen through front cover
Adjustment keys
> :
Choose digit to
adjust
^ : Adjust digit
ENT : Confirm change
Selection keys
YES : Accept setting
NO : Change setting
Key prompt flags
Message display
Main display Menu pointer flags
Figure 4-1. DO202 operator interface
4-2. Explanation of operating keys
MODE key
This key toggles between the measuring and
maintenance modes. Press once to obtain
access to the maintenance function menu.
CALIB
DISP
Press again to return to the measuring mode.
YES/NO keys
These are used to select choices from the menu.
YES is used to accept a menu selection.
NO is used to reject a selection, or to move
ahead to the next option.
DATA ENTRY keys ( )
Is used as a “cursor” key. Each press
on this key moves the cursor or flashing
digit one place to the right. This is used
to select the digit to be changed when
entering numerical data.
Is used to change the value of a selected
digit. Each press on this key increases the
value by one unit. The value can not be
decreased, so in order to obtain a lower
value, increase past nine to zero, then
increase to the required number.
When the required value has been set
using the and keys, press to
confirm the data entry. Please note that
the EXA does not register any change of
data until the ENT key is pressed.
This is the commissioning mode key. It is
used to obtain access to the commissio-
ning menu. This can only be done with the
cover removed or opened. Once this button
has been used to initiate the commissioning
menu, follow the prompts and use the other
keys as described above.
4-3. Passcode protection
In Service Code 52, passcode protection can be set
for each one of the three operating levels, individu-
ally. This procedure should be completed after the
initial commissioning (setup) of the instrument. The
passcodes should then be recorded safely for future
reference.
When passcodes have been set, the following addi-
tional steps are introduced to the configuration and
programming operations:
Maintenance
Press MODE key. The display shows 000 and *PASS*
Enter a 3-digit passcode as set in Service Code 52
to obtain access to the Maintenance Mode.
Commissioning
Press key. The display shows 000 and *PASS*
Enter a 3-digit passcode as set in Service Code 52
to obtain access to the Commissioning Mode.
Service
From the Commissioning menu, select *Service by
pressing YES key. The display shows 000 and *PASS*
Enter a 3-digit passcode as set in Service Code 52
to obtain access to the Service Mode.
Note: See Service Code 52 for the setting of
passcodes.
key