FunctionPart
Measured absorbance level (absorbance units)1
Maximum range (absorbance units)2
Overrange3
Signal to recorder (V)4
The automatic overrange can be disabled/enabled in the Setup menu.
DisplayActionStep
Select menu Automatic Overrange, press OK.1
Use the arrow keys to select Yes or No, then press
OK.
2
Event mark
Event marks can be set, for example when the sample is injected, and are displayed as
spikes on the chart recorder. The spikes are 10% of the full scale of the chart recorder
which corresponds to 0.1 V.
Press event mark key to insert an event mark.
Setting averaging time
(filtering noise)
To filter the noise in the UV-signal, a moving average filter is used. The averaging time
is the time interval used for calculating the moving average of the absorbance signal.
A long averaging time will smooth out noise efficiently, but it will also distort the peaks.
Peaks narrower than the minimum peak width value may be distorted. Because of this
the averaging time should be as short as possible, see the table below. On delivery the
averaging time is set to 2.56 s.
DisplayActionStep
Select menu Set Averaging Time, press OK.1
Monitor UVis-920 Operating Instructions 29055049 AD 47
5 Operation
5.8 Setup menu
To Next Page
Loading...
