Casella CEL Sensus data logger unit - Manual (Page 11)

>setchanpolynomial(1,0.0,1.23) Set the scaling polynomial
for data channel 1 to
C=0.0, X1=1.23
As with other prompts, if the logger detects no user activity for 60 seconds,
then the command line interface terminates and control returns to the menu
interface, top level.
2.6 Display
The Sensus Logger supports a
2-line by 20-character LCD
module, 4 keys and a buzzer.
The display provides
information about the internal
status of several of the key
functions of the logger, these
include date/time, active channels
and logging summary.
2.6.1 Sleep Mode
The LCD will always show
something, unless the logging
period has been set to one minute
or more, whereupon an internal
power-save function comes into effect and the LCD becomes blank,
switching on again only as data is logged.
Should the LCD be blank, it can be reactivated immediately (without
having to wait for a log cycle) by pressing any one of the front panel keys.
2.6.2 LCD and Keys
The LCD incorporates a back light that is lit for a few seconds on every key
press.
Keys 1 and 4, (the two end keys, see Figure 2) are used to scroll
between the available status screens. This is indicated by the up and down
arrows depicted on the LCD above the corresponding keys. Where further
information is available for viewing, left and right arrows will be added above
keys 2 and 3. Use these keys to display any additional information for the
option. At any time key 1 or key 4 can be used to move to the next/previous
status screen.
Should a selection become necessary, the annotation for key 2 will
change to “N” (indicating No) and for key 3 to “Y” (indicating Yes). Figure 3
shows the Sensus menu structure.
2.6.3 Buzzer
The buzzer gives the user an audible indication that a key press has been
recognised. In addition, the buzzer can be assigned to one or more of the
alarm channels, to give an audible indication when the alarm becomes active.
Operation
Figure 2: The layout of the LCD
and keypad.
01096
Key 1 Key 2 Key 3 Key 4
13:45:00
22/12/2001
SENSUS Digital Data Logger -
Users Handbook
Page 11 of 44