Skriv ut

Ritar aktuellt spektrum på skivare. Först visas en dialog där man kan specificera vilken skrivare som ska användas, hur många kopior som ska skrivas ut och andra alternativ som är förknippade med pappersutskrift.

Genvägar

Knapplisten:

Funktionstangent:	CTRL+P


Förhandsgranska

Med detta kommando visas aktuellt spektrum som det kommer att se ut om det skrivs ut på papper.  Med knappar på knapplisten kan man förstora / förminska avbildningen (zoom in / ut) och initiera en utskrift.


Skrivarinställning

Ger möjlighet att välja skrivare och pappersorientering mm.


WinDAS - Help Index

Commands

File menu

Acquire menu

Calculate menu

Calibrate menu

Settings menu

View menu

Window menu

Help menu


File menu commands

The File menu offers commands handling spectrum creation and storage.

New	Creates a new spectrum.
Open…	Opens a spectrum stored on disk.
Close	Closes the current spectrum.
Save	Saves the current spectrum to disk.
Save as a TEXT-file	Saves the current spectrum to disk as a text file
Save MSP	Saves a MSP-run to disk
Clear	Clears the current spectrum
Add	Adds a spectrum file to the current spectrum
Subtract	Subtracts a spectrum file from the current spectrum
Print	Prints the current spectrum.
Print Preview	Displays the current spectrum as it would appear printed.
Print Setup	Selects a printer and printer connection.
Exit	Exits the WinDAS program


Acquire

The Acquire menu offers commands handling online data collection from a connected Data Acquisition Unit (DAU).

Start	Starts data collection from a connected instrument
Stop	Stops data collection
Restart	Restarts data collection, i.e. performs the commands Stop, Clear and Start
Preset  Time	Starts data colection and stops it automatically after a specified time


Calculate

The Calculate menu offers the following commands:

Centroid	Calculates the centroid of the region between markers
Median	Calculates the median of the region between markers
Sum	Integrates the region between markers
Max	Finds the maximum between markers
Min	Finds the minimum between markers
Average	Calculates the average content of the channels between markers
Cs Activity	Calculates the Cesium activity
Rn Activity	Calculates the Radon activity
RnH2O Activity	Calculates the Radon activity in water


Calibrate

The Calibrate command offers commands to calibrate and give units to the X and Y axises.

Energy	Energy calibrates the X axis
X-unit	Specifies the unit used for the X axis
From file	Copies the calibration from a spectrum file stored on disk
Remove	Removes the current calibration
Y-unit	Specifies the unit used for the Y axis
Cs-Intensity	Cesium Intensity calibration


Settings

Marker Position	Gives exact numeric control of the position of the markers
MCS Settings	Specifies the energy window used in a Multi Channel Scaling (MCS) experiment
MCS mode	Sets the current spectrum in Multi Channel Scaling (MCS) mode
MSP mode	Sets the data acquisition in Multi Spectrum (MSP) mode
PHA mode	Sets the data acquisition in Pulse Height Analysis (PHA) mode
Cs mode	Prepares the spectrum for automatic evaluation of Cesium activity
Rn mode	Prepares the spectrum for automatic evaluation of Radon activity
RnH2O mode	Prepares the spectrum for automatic evaluation of Radon activity in water
Cs-parameters	Sets the parameters controlling the automatic evaluation of Cesium activity
Rn-parameters	Sets the parameters controlling the automatic evaluation of Radon activity
User Text	Three user specified text lines can be given.
System Setup	Specifies settings of the serial port used in communication with a Data Acquisition Unit


View

The View menu offers commands handling the graphical representation of spectrum data.

Fill mode	Toggles the display between fill mode and no fill mode
Logarithmic	Toggles the Y axis between logarithmic scale and linear scale
Energy Scale	Toggles the X axis between energy scale and channel scale
Automatic Y-scale	Specifies that the Y axis should scale automatically
Fixed Y-scale	Specifies that the Y axis should not scale automatically
Smooth	Smoothes the spectrum
Remove Smooth	Removes the smoothing
Expand	Expands the region between markers
Zoom In	Narrows the viewing window
Zoom Out	Enlarges the viewing window
Whole Spectrum	Displays the whole spectrum
Pan Left	Pans the spectrum view to the left
Pan Right	Pans the spectrum view to the right
MSP Partspectrum	Selects which spectrum of a Multi Spectrum (MSP) run to show


Window

The Window menu offers the following commands

Cascade	Arranges windows in an overlapped fashion.
Tile	Arranges windows in non-overlapped tiles.


Help

The Help menu offers the following commands, which provide you assistance with this application

Contents	Offers you an index to topics on which you can get help.
About WinDAS	Displays the version number of the WinDAS program.


New spectrum
New

Use this command to create a new spectrum of the specified size.

If the size specified is not a power of two, the closest power of two greater than 32 is chosen.

You can open an existing spectrum with the Open command.

Shortcuts

Toolbar:

Keys:	CTRL+N


Open spectrum file
Open

Opens the specified spectrum file from disk

See also the File 1, 2, 3, 4.-. command.

Shortcuts

Toolbar:

Keys:	CTRL+O


Close

Closes the current spectrum.

Not allowed if data acquisition is enabled for the spectrum.

Shortcut

Toolbar:


Save

Saves the current spectrum in a binary file with the specified file name.

The default file name extension is DAT.

Shortcuts

Toolbar:

Keys:	CTRL+S


Text file
Save as a Text-file

Saves the current spectrum as an ASCII text file with the specified file name.

The default file name extension is ASC.

Note! WinDAS can’t read a spectrum saved as a text file

The text file contains two kinds of information. The first section contains general information about the spectrum; the second section contains the actual spectrum data.

The first line in the file is a header with the following layout:

H   5   512   "1997-08-03 13:15:04"   10772   1.12

where

H	means header

5	is the line number where actual spectrum data starts

512	is the spectrum size in channels

1997-08-03 13:15:04	specifies when the data collection started

17772	is the number of seconds data collection was enabled

1.12	is the deadtime in percent.

If the spectrum is energy calibrated the header line is followed by a line of the following layout:

C   0.000000   0.001756   0.000000   "MeV"   "Counts"

Where C means calibration and the three numbers are the coefficients used to calculate energy from channel number according to the formula:

Energy = C1 + C2 * channel + C3 * channel ** 2

The text following the calibration coefficients are the units used for the X and Y axises respectively.

If you have specified user defined text lines for the spectrum, these text lines follow next with the following layout:

T1This is textline number 1,

T2this is textline number 2

T3and this is textline number 3

After the information section comes the spectrum data section. Each line in the data section contains two numbers - the channel number and the content in counts for that channel.

Every line in the text file ends with the ASCII control characters ‘Return’ and ‘Linefeed’.


Save MSP

Saves all spectra from a MSP experiment in a disk file with specified name.

Default file extension is .DAT.


Clear

Clears, i.e. sets each channel to zero, in the current spectrum.


Add

Adds a specified energy spectrum to the current spectrum. The involved spectra must be of the same size and the addition is performed channel by channel. New collection and deadtimes are calculated. The operation does not modify the energy calibration of the displayed spectrum.


Subtract

Subtracts a specified energy spectrum from the current spectrum. The involved spectra must be of the same size. The subtraction is performed channel by channel with weight factors calculated from the real- and deadtimes of the involved spectra. The operation does not modify the energy calibration of the displayed spectrum.


1, 2, 3, 4 command
1, 2, 3, 4 – command

Use the numbers and filenames listed at the bottom of the File menu to open one of the last four spectra you closed.

Choose the number that corresponds with - or click the filename of - the spectrum you want to open.


Exit

Use this command to end your WinDAS session.

WinDAS prompts you to save spectra with unsaved changes.

Shortcuts

Toolbar:	.

Keys:	ALT+F4


Start

Starts data collection to the current spectrum.

Elapsed collection time is shown in the PHA field.

If the spectrum is set in MCS mode, the PHA field shows the remaining collection time of the current channel.

If the spectrum is set in MSP mode, the MSP field shows the number of the spectrum currently collecting data and the PHA field shows the collection time.

Not allowed if the spectrum originates from a disk file or if it has been modified by an add or a subtract command.

Shortcut

Toolbar:


Stop

Stops data collection.

Shortcut

Toolbar:


Restart

Restarts data collection for the current spectrum. Is a short for the sequence:

Stop

Clear

Start

Requires that data collection is enabled.


Preset Time

Start collecting data and stop automatically after a specified time.

The remaining collection time is displayed in the PHA field


Centroid

Calculates the centroid of the region between markers. Also standard deviation and FWHM are calculated.

Data below a straight line between the markers are subtracted.

The channels where the markers are positioned are included in the calculation.

The result is given in the unit of the X-axis and is given with 3 decimal figures.


Median

Calculates the median of the region between markers.

Data below a straight line between the markers are subtracted.

The channels where the markers are positioned are included in the calculation.

The result is given in the unit of the X-axis and is given with 3 decimal figures.


Sum

Calculates the integral of the region between markers.

Data below a straight line between the markers are subtracted.

The channels where the markers are positioned are included in the calculation.


Max

Reports the maximum in the region between markers.

The channels where the markers are positioned are included in the calculation.


Min

Reports the minimum in the region between markers.

The channels where the markers are positioned are included in the calculation.


Average

Calculates the average (i.e. the counts per channel) of all channels in the region between markers.

Data below a straight line between the markers are subtracted.

The channels where the markers are positioned are included in the calculation.


Cs Activity

Calculate the Cesium activity of the sample


Rn Activity

Calculate the Radon activity of the sample


RnH2O Activity

Calculate the Radon activity in water


Energy calibrate manually
Energy calibration

Calibrates the X-axis of the current spectrum by associating a specified channel with the corresponding energy. The default channel number is the last calculated centroid

A least square fit of up to 20 calibration points is used to determine the calibration coefficients.

The command must be executed for so many distinct points as the chosen calibration method requires - normally 2.


X unit
X-unit

Specifies the unit used for a calibrated X-axis.

Default is MeV.


Energy calibrate from file
Energy calibration from file

Read the calibration constants from a calibrated spectrum file.


Remove energy calibration

Clears the calibration constants.

The X-axis will be shown as a channel scale.


Y unit
Y-unit

Specifies the unit used for the Y axis

Default is Counts.


Cs intensity
Cs-intensity

Calibrates the Y axis to show the Cesium activity


Marker position

Many of the commands in the WinDAS program operate on data in a specific region of a spectrum. The markers - left marker and right marker - are the tools you use to select a region of interest.

The most straightforward way to locate a marker is to use the mouse:

To place the left marker you point the mouse symbol to the channel in the spectrum you intend to use as your leftmost channel and press the left mouse button.

To place the right marker you point the mouse symbol to the channel in the spectrum you intend to use as your rightmost channel and press the right mouse button.

This is a very fast way to select a region of interest but sometimes you need a better precision in the region specification than the mouse allows. The Marker position command shows a dialog box where you have exact control of where to locate the markers.

Note that markers have both a X and a Y coordinate!


MCS Settings

Accepts the current marker positions to specify the energy window used in a Multi Channel Scaling (MCS) experiment.

See also MCS mode


MCS
MCS mode

Sets the current spectrum in Multi Channel Scaling (MCS) mode.

In a MCS spectrum each channel defines a time window. Data collected in the specified energy window during each time window are stored in sequential channels. I.e. the resulting spectrum represents the time distribution of counts in the energy window used.


MSP
MSP mode

Sets the current spectrum in Multi Spectrum (MSP) mode.

In a MSP experiment multiple spectra are collected sequentially, all with the same specified collection time. Use the MSP Partspectrum command to view the different spectra.


PHA
PHA mode

Sets the current spectrum in Pulse Height Analysis (PHA) mode. This is the default for a new spectrum.


Cesium
Cs mode

Specifies that the current spectrum automatically should be analyzed for Cesium activity when the data collection stops.


Radon
Rn mode

Specifies that the current spectrum automatically should be analyzed for Radon activity when the data collection stops.


Radon
RnH2O mode

Specifies that the current spectrum automatically should be analyzed for Radon activity in water when the data collection stops.


Cesium
Cs parameters

Sets parameters controlling the automatic calculation of Cesium activity.


Radon
Rn parameters

Sets parameters controlling the automatic calculation of Radon activity.


User text

With every spectrum file you can store up to three lines of user specified free text. The textlines are shown centered below the X-axis on display and on plots. The lines are at most 75 characters each.


System setup

Specifies

Which serial port to use when communicating with a Data Acquisition Unit.

The default spectrum size.

The width of the pen used when plotting.


Fill mode

Displays the spectrum in fill mode, where the whole columns in the histogram are colored, or in nonfilled mode where only the envelope of the spectrum is shown.

Shortcut

Toolbar:


Logarithmic Y-scale
Logarithmic

Toggles the display between a logarithmic scale and a linear scale.

Shortcut

Toolbar:


Energy scale

Toggles the X-axis between energy scale and channel scale.

A spectrum that is not calibrated can only be shown with channel scale.

Shortcut

Toolbar:


Autoscale
Automatic Y-scale

Enables automatic scaling of the Y-axis: The channel with the most counts on the display decides the scale.

This is the default.


Fixed Y scale

Shows the Y-axis with a fixed scale. This guarantees that you have the same Y-axis when you select different parts of the spectrum to display.

The default mode is Autoscale


Smooth

Performs a nondestructive smooth operation of grade n of the spectrum. I.e every displayed channel is the average of the surrounding n channels. This makes the display to appear smoother.

Note that the Smooth function is nondestructive! Only the visual representation is affected. To remove the smoothing, use the Remove smooth command.


Remove Smooth

Restores the display to the normal, non-smoothed, state.


Expand

Expands the region between markers so it will cover as large part of the display as possible.

Shortcut

Toolbar:


Zoom In

Decreases the number of channels displayed by a factor of two.

Shortcut

Toolbar:


Zoom Out

Increases the number of channels displayed by a factor of two.

Shortcut

Toolbar:


Whole Spectrum

If the spectrum is expanded the display will go back to show the whole spectrum.

Shortcut

Toolbar:


Pan Left

Pans the viewing window into the spectrum to the left.

Shortcut

Toolbar:


Pan Right

Pans the viewing window into the spectrum to the right.

Shortcut

Toolbar:


Part spectrum
MSP Partspectrum

Use this command to select which spectrum of a MSP-file to show

Shortcut

Toolbar:


Cascade

Use this command to arrange multiple opened windows in an overlapped fashion.


Tile

Use this command to arrange multiple opened windows side by side.


1,2, -command
1, 2, ... command

WinDAS displays a list of currently open spectrum windows at the bottom of the Window menu.  A check mark appears in front of the document name of the active window.  Choose a spectrum from this list to make its window active.


Index

Use this command to display the opening screen of Help.  From the opening screen, you can jump to step-by-step instructions for using WinDAS and various types of reference information.


About WinDAS

Use this command to display the copyright notice and version number of your copy of the WinDAS  program.


Help Using Help Command
Context Help command

Use the Context Help command to obtain help on some portion of WinDAS.  When you choose the Toolbar's Context Help button, the mouse pointer will change to an arrow and question mark.  Then click somewhere in the WinDAS window, such as another Toolbar button.  The Help topic will be shown for the item you clicked.

Shortcut

Keys:	SHIFT+F1


No Help Available

No help is available for this message box.