Hitachi CHROMASTER 5160, Instruction Manual

Page: 293 / 1022

3.2.1
Set an offset value.
Press [numerical] key (within [0] to [1][0][0][0]: Usually input
[0]), and then the [ENT] key.
* Settable range : 0 to 1000 AU, settable in increments
of 1
* Default value : 0
■
Since the negative voltage input range is around -10 mV
with the usual data processor, a baseline lower than
-10 mV level may disable integration of some
chromatogram peaks (Fig. 3-2(a)). In this case, the
offset function adjusts the baseline, which is shifted to
the negative side, to a signal level within the input range
of the data processor (Fig. 3-2(b)).
(b) Offset Used (a) Offset Not Used
-10
(corresponding to
-10 mV)
Fig. 3-2 Example of Offset Usage
4)
Upon completion of offset setting, the first monitor screen
reappears.
Although the input numeral is not indicated at ABS, “+*” will
be suffixed to ABS value when a numeral other than 0 is
input.
First Monitor Screen
0.0 250 0.0000+
＊
1 D2&W
TIME WL ABS PROG LAMP [I]
3 - 11