ChromeGate 3.3.2 Software Manual - KNAUER Advanced Scientific ...

96 Creating an Instrument Control Method
Used Channels:
Check the box(es) to turn the acquisition for the selected channel(s) on. If
the box is not selected, no data will be acquired and no time program will
be executed for this channel. As many channels are activated (at least
one) as many wavelength columns appear in the spreadsheet below. You
can only enable the number of channels you have activated in the
instrument configuration setup of the device.
The wavelength table is a spreadsheet to enter your time (detector)
program. In the first row (at time 0.00 min), enter the initial wavelength(s)
in nm. For up to 50 steps (time in minutes), you can then define the
detector parameters. The editing principle including programming the
digital outs is the same as for the time (gradient) program, described in
the chapter Instrument Setup – Pumps, Pump Program.
Autozero at start
Check the Autozero field, if you wish the signal to be zeroed at
measurement start (to define the current signal as the baseline). You
cannot disable this option if you are acquiring 3D data in the advanced
mode of the detector.
Autozero at WL change
Check this option if you wish the signal to be zeroed at the moment the
wavelength is changed (to define the current signal as the baseline).
Lamp OFF at the end of run
Check the Lamp OFF box to switch off the detector lamp after a
measurement is finished. This option may be used for the shutdown
methods.
You should switch the lamp on either manually or from the direct
control window before you start the next working session. After
power up, allow 30 minutes for the lamp to stabilize before running
samples that may require sensitive measurements.
Scan, nm [Range 190 – 740 nm]
This section allows you to specify the scan spectral interval, in nm.
Start
Enter the start wavelength for the scan in nm.
End
Enter the end wavelength for the scan in nm.
The scan section limits Start and End are important even if no PDA
option is available. All measuring wavelengths in the used channels
1 to 4 must be within these limits.
Acquire 3D data
You have access to this selection field only with the PDA option. The
Advanced… button becomes accessible if the Acquire 3D data check
mark is set.
Fig. 140 Detector K-2600 setup window with PDA option
A click on the Advanced… button will open the following dialog box.