Yokogawa 415 Steam and Gas - Manual (Page 52)

5. CALIBRATION
The Calibration routine enables the Setup Parameters to be programmed, as well
as enabling the input signals to be checked.
The calibration routine can be entered in two ways:
1 By connecting a wire link (or switch) to the rear terminal strip
across terminals 1 and 2 or,
2 By pressing the TOTAL key and, while still holding, pressing the
DISPLAY key. Both keys must then be held for approximately 6
seconds. This second method of access can be disabled during the
calibration so that it is only possible to enter the calibration routine
via the link across terminals 1 and 2.
The key switch actions during Calibration are as follows:
RATE will change a flashing digit, to the next digit.
TOTAL will increment a flashing digit or change a
parameter selection.
RESET will reset a flashing digit to zero.
DISPLAY (Program) will step through the program sequences.
Note that the arrows in the Rate and Total key switches indicate that these
switches can be used to change and increment digits respectively.
In stepping through the program sequence, the Parameter Description is always
shown. When a value or parameter can be changed, it is always shown as
flashing, and the LED's in the switch panels are lit if that key switch can be used
to change a value.
50 Calibration