Store defines the points on signal A at which spectra will be taken and saved. The additional signals are not used to control spectra acquisition.
|
None | No spectra are taken. |
|
Apex |
A spectrum is taken at the apex of the peak. |
| Apex + Baselines | Spectra are taken at the apex, and baselines of the peak. Note: This mode is available only if the application supports peak-detection functionality. |
Apex + Slopes | Spectra are taken at the apex, upslope, and downslope of the peak. Note: This mode is available only if the application supports peak-detection functionality. |
|
Apex + Slopes + Baselines | Spectra are taken at the apex, baselines, upslope, and downslope of the peak. Note: This mode is available only if the application supports peak-detection functionality. |
All in Peak |
All spectra within the peak are taken. Note: This mode is available only if the application supports peak-detection functionality. |
|
Note: The three spectra acquisition types mentioned above are also referred to as peak-controlled spectra acquisition. The peak detection is done by the detector firmware based on the threshold and peakwidth parameters you set for the DAD. If you want to use peak-controlled spectra storage, make sure that you set these parameters to recognize all the peaks of interest. The integration algorithm also includes peak detection based on the threshold and peakwidth parameters set in the integration events. | |
Every 2nd spectrum | Spectra are taken continuously as for All, but only every second spectrum is stored; other spectra are discarded. This reduces the amount of data storage necessary. Note: This mode is available only if the application supports peak-detection functionality. |
|
All | Spectra are taken continuously depending on the setting of the Peakwidth. Eight spectra are acquired per Peakwidth. The acquisition time for one spectrum is slightly less than the Peakwidth divided by 8, that is, greater than or equal to 0.01s and less than or equal to 2.55s. |
If there are no peaks in Signal A, there are no spectra. You cannot process spectra present in other signals. |
Range defines the wavelength range for spectral storage.
Limits: 190 to 950 nm in steps of 1 nm for both low and high values. The high value must be greater than the low value by at least 1 nm.
Step defines the wavelength resolution for spectral storage.
Limits: 0.10 to 100.00 nm in steps of 0.1 nm.
The threshold is the height in mAU of the smallest expected peak. The peak detector ignores any peaks that are lower than the threshold value and does not save spectra.
Limits: 0.1 to 1000.0 mAU in steps of 0.1 mAU.