Hach DR/2010 Instrument Manual page 81

The display will show (for example):
 &&&&
6. The instrument displays the next available user-entered program
number on the right side of the display (flashing). To copy the
source program as the displayed number (951 in this case), press
. To copy the program to another program number, use the
ENTER
keys to enter the desired number, or scroll to the desired
NUMERIC
number using the
number for future reference.
7. The display will show:
 &&&&
then:
 &&&&
Go to section 3.10 Creating A User Program, step 23, for instruction
on entering data into the calibration table.
# &&&
+ '$& '#
keys. Then press
ARROW
# &&&
2 H H= + EA@
# &&&
+ 2H H=
81
nm
. Record the chosen
ENTER
nm
nm