Autozero; Reading Absorbance Values; Setup Menu - GE UVis-920 Operating Instructions Manual

Resetting filter time
The time the current filter has been used can be shown in hours and resetted to zero.
There is one time counter for each filter wavelength.
Step
1
2
5.6

Autozero

The autozero function sets the detected absorbance to zero when the autozero key is
pressed. Autozero is recommended before a sample is injected.
Press autozero key. The absorbance value is then shown in main operating menu.
5.7

Reading absorbance values

The main operating menu shows the absorbance values. The menu is reached from any
other menu by pressing the Esc key repeatedly.
5.8

Setup menu

Setting analog output to an
external chart recorder
Setting range and zero
UVis-920 displays the measured absorbance value as an analog voltage in the recorder
connector. The output from the instrument is always 0 V to 1 V, but the absorbance
value for full scale deflection (AUFS) and the zero absorbance level on the recorder can
be set.
Step
1
Monitor UVis-920 Operating Instructions 29055049 AD
Action
Select menu Reset Filter Time, press OK.
Display toggles between yes and no. Select yes to
reset the time counter for the current filter wave-
length, press OK.
Action
Select menu Analog Out, press OK.
5 Operation
5.5 Custom filters
Display
Display
45