Operating Instructions; Time Program Setting - Hitachi PRIMAIDE 1440 Instruction Manual

3.4 Operating Instructions

3.4.1 Time program setting

A time program is used for automatic change of the
chromatograph measurement conditions with time. The time
program takes priority over other settings.
The following items can be set.
• Measurement time (TIME)
• Excitation wavelength (Ex)
• Emission wavelength (Em)
• Baseline processing (BASE)
• Photomultiplier voltage (PMT)
* Up to 9 programs can be registered as a time program, and a
total of 100 steps can be registered for the 9 programs.
The registered time program is retained by battery backup
even when the power switch is turned OFF.
* Use the CL key to correct entered numerics. And use the
DEL key to delete registered values. Use the  key to go
back to the preceding step, or the  key to advance to the
next step.
When the setting at each step is finished, press the ESC key
to return to the 1st monitor screen, and the time program is
registered.
NOTE: When setting the time program, be sure to set the
TIME for the first step at 0.0. This cannot be changed
or deleted. And for the final step of the program, be
sure to set the measurement completion time.
The time program will thus be executed up to the time
entered for the final step.
NOTE: Set an interval of at least 0.3 minute between steps of
the time program.
NOTE: It is recommended that the wavelength set here for 0.0
minute be identical to the measurement wavelength set
in section 3.1.4. For instance, if 500 is set here for Ex
with 250 set for Ex of the measurement wavelength,
then a time loss will occur when Ex shifts from 250 to
500 at the start of the time program.
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