Hitachi PRIMAIDE 1440 Instruction Manual page 78

Press numeric keys 2 5 0 to 9 0 0 and then the ENT
key.
* Setting range: 250 to 900 nm
It is recommended to set the same wavelength as
was set for Em of the measuring wavelengths.
* Initial (default) value: blank
The cursor next moves to BASE.
(d) Set the BASE (baseline processing).
<Step setting screen (BASE indicated)>
TIME Ex
0.0 250
Press a numeric key (1 or 2; usually 1) and then the
ENT key.
* 1 : AUTO ZERO is executed. Data baseline is set
to the zero point of the recorder.
2 : HOLD is executed. Baseline is held so that it
doesn't fluctuate. HOLD function is released
by executing AUTO ZERO.
* Initial (default) value: 1
(e) Set the PMT (photomultiplier voltage).
<Step setting screen (PMT indicated)>
TIME Ex
0.0 250
Press a numeric key 1 to 5 and then the ENT key.
(f) When the setting for the first step is completed, return
to the TIME setting on step setting screen.
* If some parameters will be changed, advance to the
second and subsequent steps.
If parameters will not be changed, advance to the
final step setting.
3 - 30
Em BASE PMT
350 1
Em BASE
350 1
1
PMT
3 1