Hitachi U-5100 Instruction Manual page 145

Table 3-35 "Meas. PARAM." Setting Parameters
Setting Item
Data Mode Determine the unit of scale on the Y axis.
[1] ABS :
[2] %T :
Start WL Enter a wavelength for starting wavelength scanning.
(nm) This parameter is specifiable in a range of 200.0 to
1100.0 nm in steps of 0.1 nm.
Make your setting so that Start WL < End WL.
End WL (nm) Enter a wavelength for ending wavelength scanning.
This parameter is specifiable in a range of 190.0 to
1090.0 nm in steps of 0.1 nm.
Make your setting so that Start WL < End WL.
Upper Scale Enter a Y-axis upper limit for the spectrum displayed
during measurement.
This parameter is specifiable in the following range.
ABS : -9.999 to 9.999
%T : -999.9 to 999.9
Lower Scale Enter a Y-axis lower limit for the spectrum displayed
during measurement.
This parameter is specifiable in the following range.
ABS : -9.999 to 9.999
%T : -999.9 to 999.9
Scan Speed Set up a wavelength scanning speed. The following
7 speeds are selectable.
[1] 40 [2] 100 [3] 200 [4] 400 [5] 800 [6] 1200
[7] 2400
The data interval varies with the scan speed. For
this interval, a small value is set at low speed and a
large value at high speed. For details, refer to the
description of "Data Int."
Delay (s) After the [START] key is pressed, the system waits
for the time period set here and then starts
measurement. This parameter is settable in a range
of 0 to 9999 sec in steps of 1 sec.
Set the parameter when you want to start
measurement after a specified time period, including
when measuring a sample after its temperature
reaches the room temperature and when starting
measurement after completion of reaction. Enter "0"
if the delay time need not be set.
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Description
Used for measuring the absorption
spectrum (spectrum with absorbance on
the Y axis).
Used for measuring the transmission
spectrum (spectrum with transmittance on
the Y axis).
3.2.4