AO2000 CONTINUOUS GAS ANALYZERS  |  OI/AO2000-EN REV. B  143
 
 
 
Cancel keys 
Cancel keys 
Error Maint Power
7
8
9
654
12
3
0
.
 
The "Back" and "Meas" keys located under the numeric keypad are designat-
ed as cancel keys. 
 
The "Back" key allows the operator to cancel a function or menu item and 
return to the previous menu level. 
Only entries confirmed with the ENTER key are stored; unconfirmed items 
are not accepted. 
The "Back" key also allows the operator to clear gas analyzer help text and 
messages.
 
 
The "Meas" key allows the operator to cancel a function or menu item and to 
return to the measured value display in measurement mode. 
Only entries confirmed with the ENTER key are stored; unconfirmed items 
are not accepted. 
NOTE 
The gas analyzer automatically reverts to the measurement mode to display 
values if the operator has not pressed a key in menu mode in the last five 
minutes ("time out").