Operation 4
IR7000
36
Teledyne Analytical Instruments., - Rev. 3
until all 4 ranges have been defined. It is not necessary
to set all 4 ranges in order to use the instrument.
5.
E
NTER
A
LARM
S
ETPOINTS
The next 2 submenus allow the user to enter low and high
alarm setpoints respectively. Press and hold the SETUP button
until the ALARM L submenu appears. If necessary, cycle
through the submenus by repeatedly pressing the SETUP
button until the CHART 4 menu appears. Then press and
hold
the SETUP button once more to enter the ALARM L submenu
for editing.
•
Enter the low alarm setpoint.
Use the UP and DOWN
arrows on the front panel while holding in the SETUP
button to enter or change the low alarm setpoint. An
alarm setpoint of 0 turns the alarm off. The OFF status
or the setpoint will be reflected on the bottom line of
the display.
•
Save changes.
Again, after releasing the SETUP
button, you will be prompted to save or else lose any
setpoint changes you made. There is a 60-second timer
on this screen. Press the UP button to save your
changes or the DOWN button to discard the changes
within the 60-second time limit. A confirmation screen
will then appear.
•
Enter the high alarm setpoint.
Go to the next
submenu (ALARM H) to set the high alarm setpoint.
Use the UP and DOWN arrows on the front panel while
holding in the SETUP button to enter or change the
high alarm setpoint. As before, an alarm setpoint of 0
turns the alarm off.
6.
E
NTER
C
ALIBRATION
D
ELAY
T
IME
The next submenu, CAL DELAY, is used to specify the time
delay before the start of a calibration. The time delay begins
when the calibration is requested either manually or through
the autocalibration feature. During the delay, the sample cell
should be purged with zero or span gas depending on the
particular calibration.