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Figure 2 Display and keypad
1 Display
2 Channel selection keys
1
3 ON and OFF keys
4.1 Channel selection keys
Push the related channel selection key to show data for one of the six
bottles. The channel selection keys are also used in the instrument setup
menu to select a parameter to be edited. Refer to
and
Table
3.
Table 3 Channel key setup parameters
Channel
1
2
3
1
The ON and OFF keys are used to start and stop a test. They do not power the instrument on and off.
4 Arrow keys
5 Power indicator
Figure 2
on page 7
Parameter
Year (0–99)
Month (1–12)
Day (1–31)
Table 3 Channel key setup parameters (continued)
Channel
4
5
6
4.2 Arrow keys
The display shows a graph of BOD values on the vertical axis and time
in days on the horizontal axis. Push the LEFT and RIGHT arrows to
move the cursor along the BOD curve to show the approximate
coordinates (time, BOD) of the selected data point.
The time interval and BOD value of the data point are shown in the lower
right of the display. The cursor is automatically placed at the most
recently collected data point in a channel display.
Push and hold the LEFT and RIGHTarrows at the same time to go into
the instrument setup menu. The arrow keys are also used to change the
time, date, test length and range.
4.3 ON key
To go to the range selection menu, push ON from a channel display
screen. Then push and hold ON to start the test for the selected channel.
4.4 OFF key
When a test is in DELAY or RUN modes, push and hold OFF to
manually end the test. The instrument will show END. The OFF key is
also used to exit the instrument setup menu or range selection menu.
The changes made before the menu is exited are saved.
Parameter
Hour (0–24)
Minute (0–59)
Test length (5, 7 or 10 days)
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