Quadera Pfeiffer программа управления (1248465), страница 11
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Thecorresponding icons and tooltips indicate the current status. If required switchthe filament and the SEM on.When the filament and the SEM are switched off and you want to start themeasurement a requester appears automatically. It queries if thecorresponding component is to be switched on or not.2. In the Device menu, click Run. The connection to the device is automaticallyestablished. Then the current recipe is being started. The checkbox indicatesthat the measurement is running (checkmark).or. The connection to the2.
In the device status view, click the "Start" icondevice is automatically established. Then the current recipe is being started.The "Start" icon appears in gray thus indicating a running measurement. The"Stop" icon becomes available.Stopping the measurement1. In the Device menu, click Run.
The measurement is being stopped. Thecheckbox indicates that the measurement has been stopped (no checkmark).or. The measurement is1. In the device status view, click the "Stop" iconbeing stopped. The "Stop" icon appears in gray thus indicating that themeasurement is stopped. The "Start" icon becomes available.97QUADERA HTML HelpDisconnecting From the DeviceDisconnecting1. In the Device menu, click Connect. The checkbox indicates that the device isno longer connected (no checkmark).or1. In the device status view, click the "Connected" icon. After theconnection has been cut the icon toggles to the "Disconnected" icon.NOTE:A requester appears if you disconnect the device while the measurement isrunning:• Click "Yes" if you want to disconnect the device.
The measurementwill be stopped.• Click "No", if you want to continue the measurement. The device willnot be disconnected.98QUADERAConnecting With the DeviceNOTE:New or modified parameters for the measurement task are accepted fromthe device only after the measurement has been restarted. Ion sourceparameters affect the device immediately, i.e. as soon as the device isconnected with QUADERA®.Communication settings•Select the desired communication settings. You can choose betweenmeasuring mode and simulation mode.Connecting•In the Device menu, click Connect. The checkbox indicates that the device isconnected (checkmark), or•In the device status view, click the "Disconnected" icon.
After theconnection has been established the icon toggles to the "Connected" icon.99QUADERA HTML HelpSimulation ModeQUADERA® allows you to simulate the operation of a mass spectrometer. Thisdoesn't mean that a simulation is being performed in the real device; instead, asimulation software is used. By default, the simulation software is installed togetherwith QUADERA®. The simulator is running on the same PC as QUADERA®. The localsimulation mode is e.g. helpful for getting familiar with the software.Proceed as follows to switch to the simulation mode:1. In the Device menu, click Communication Settings…. The "CommunicationSettings" dialog opens.2.
Select Simulator.3. Click OK to confirm. The "Communication Settings" dialog closes.4. QUADERA® is now switched to the simulation mode.NOTE:The simulation in the real device is defined via the basic device settings ofthe device status view ("Device Configuration View" icon). In contrast, usingthe simulation software (local simulation on the PC) does not require a realdevice.100QUADERACalibrationCalibration ProjectsIn QUADERA®, devices are calibrated by using so-called calibration projects whichare based on normal measurement projects.
Calibration projects are called via thestart page.A calibration project contains the usual views of a measurement project:•One recipe,•Working areas for operation and visualization.You can modify recipe parameters directly in the recipe. The parameters that arerelevant for the calibration project are linked to editing fields in the working area.Thus, you can change these parameters directly in the working area.QUADERA® provides basis templates for each calibration project, such as gas specificcalibration and background determination. These templates are intended to createuser specific calibration project templates, for ab initio calibration projects.Saving the measurement data of a calibration procedure is usually not required.However, saving the calibration project as a template may be useful for futureapplications (menu File > Save as Template…).
Example: creating GSCmeasurement projects.NOTE:For a written documentation of your calibration projects you can capturescreens of the QUADERA® user interface.101QUADERA HTML HelpTuning the Ion SourceTuning the Ion SourceConsider one or two peaks of a scan-analog measurement to tune the ion source (ionsource optimization). Use the recipe editor to change the recipe parameters definedin the calibration project for the ion source.
Typically, one or more masses arescanned.The calibration project allows you to optimize the performance of the ion source. Thescans will be recorded when you start the calibration project. The currently set ionsource parameters are used. They are displayed in the working area. Tune the ionsource while the measurement is running: Optimize the peak shape and intensity bychanging the ion source parameters. Changed parameters are forwarded from thecalibration project to the device and accepted instantly.102QUADERAOptimizing the Ion Source1. Open the start page: In the View menu, click Show Start Page.2. Click on the icon for the required device.3.
Create a new calibration project: In the "Calibration and Tuning" list, doubleclick Ion Source Tuning.qmt. This way you create a new calibration projectbased on the selected template.4. The new measurement project window appears. The working area displays thecalibration project.• Edit the recipe according to your needs (if necessary): Click thecorresponding tab in the working area selection.• Display the measuring data: Click the corresponding tab in the workingarea selection.NOTE:You can start the measurement regardless whether the recipe editor or theworking area has been selected.5. Start the measurement: In the device status view, click on the "Start" icon.The connection to the device is automatically established. The device nowreceives the parameters for the current measurement task. You can adjust thechart layout while the measurement is running.6.
Optimize the peak shape and intensity: Change the ion source parameters inthe section of the calibration project during the measurement ("Ion Source"editor). Changed parameters are accepted by the device instantly.You find the procedures to optimize the ion source potentials for the QMG700with QMA400/410/430 in the operating instructions BG 805983 BD/E.Procedures to optimize the specific ion source types for the QMG220:• Crossbeam Ion Source• Grid Ion Source• SPM Ion Source• Open High Sensitivity Ion Source• Gastight High Sensitivity Ion Source7.
Stop the measurement: In the device status view, click on the "Stop" icon.8. Close and save the measurement project. In the File menu, click Close. Youare requested if you want to save the measurement project. QUADERA®suggests an automatically generated file name that is based on date/time ofthe measurement and the used template.• Yes: the "Save As" window used for saving measuring data opensup. Select a suitable name and path and then click Save. Themeasurement project will be saved and closed.Please note: The file extension for measurement projects is *.qmp• No (recommended option): the measurement project will be closedwithout saving the data.• Cancel: the action is cancelled.
You will return to the measurementproject without saving the data.103QUADERA HTML HelpIon Source ParametersThe "Ion Source" editor in the calibration project displays the parameters for tuningthe ion source. Modify the parameters directly in this editor. The device appliesmodified parameters instantly.•Ion source parameters for QMG220•Ion source parameters for QMG700A separate parameter set is stored for each ion source type and filament. TheQMG220 additionally provides 4 parameter sets per ion source type, containing ionsource voltages ("Active Set").Image of "Ion Source" editor (example)Ion source parameters for QMG220ParameterRangeDescription•Ion SourceType(not editable)Use the "Device Configuration"window to select the ion source type.•FilamentNumberDropdown listFilament selection.
The number ofavailable filaments depends on theion source type.•Active SetDropdown listSelect the ion source voltagesparameter set, which contains eachone data set for the various filamentconfigurations.•EmissionCurrentNumber > 0Filament emission current.ProtectionCurrentNumber > 0•This parameter is applied to thefilament that is selected under"Filament Number".Maximum filament current, used toprotect the filament.This parameter is applied to thefilament that is selected under"Filament Number".•RF-Polarity104Dropdown listSwitch the polarity of the rod systemfor separating ions by the m/e-ratio.QUADERAParameterRangeDescription•IonReferenceAny numberIon source voltages.•Cathode•Focus•Field Axis•Extraction•InnerDeflectionThese parameters are applied to thefilament and the ion source type thatis selected under "Filament Number"and "Ion Source Type", respectively.The available parameters depend onthe used ion source. For detailedinformation, please refer to theoperating instructions of the QMG andthe used ion source.•OuterDeflectionProcedures to optimize the specificion source types:•Wehnelt•Crossbeam Ion Source•Grid Ion Source•SPM Ion Source•Open High Sensitivity Ion Source•Gastight High Sensitivity IonSourceIon source parameters for QMG700ParameterRangeDescription•Ion SourceType(not editable)Use the "Device Configuration"window to select the ion source type.•FilamentNumberDropdown listFilament selection.
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