Hach DR/2010 Instrument Manual page 75

To view the coefficient values, scroll down with the
If the calibration table has no points in it, you may press
edit the coefficients. Press
40. Press the
DOWN ARROW
 &&&&
41. To enter a timer, press
&&&& 
42. Use the
NUMERIC
example, to enter 3 minutes and 30 seconds, press
The display will show:
&&&& 
43. Press to accept the time. If an error is made when entering the
ENTER
time, press to erase the last numeric entry and re-enter the number.
CE
Press the
DOWN ARROW
&&&& 
44. If desired, repeat steps 41-43 to enter up to four timed periods. Press
to accept each timer. After the last timer is accepted, press the
ENTER
.
DOWN ARROW
If a timer is not needed, press the
 &&&&
to continue with the calibration.
EXIT
key. The display will show:
"# &&&
6 E AH  J5AJ
. The display will show:
ENTER
&&& "#
6 E AH 
keys to enter the minutes and seconds desired. For
"# &&&
6 E AH ! !
. The display will show:
"# &&&
6 E AH  J5AJ
DOWN ARROW
"# &&&
5 J HA2H H=
75
DOWN ARROW
and
ENTER
nm
nm
55
.
3 3 0
nm
nm
. The next prompt is:
nm
key.