Getting Started with JETDSP

To run JETDSP on Unix, type 'jetdsp' at the Unix command line.

On the JAC computers it is possible to run JETDSP using the Start menu. This can be displayed either by using the button in the bottom left corner, or by clicking on an empty part of the screen. JETDSP is under the submenu 'Analysis Programs'

Type 'jetdsp_lowcol' at the Unix command line, or select JETDSP - Low Colour from the menus, to run a low colour version of the program. This will use no more than 16 colours from the shared colour map. Please consult the jetdsp FAQ if you have problems caused by lack of colours on your terminal.

To run JETDSP on a PC, click on the JETDSP icon on your desktop.  If you do not have a JETDSP icon, start IDL and type 'jetdsp' at the command prompt.

JETDSP works primarily with JET data. To find out more about JET data in general, click here. More information about PPFs in particular can be found here. For details of how to specify JPFs in JETDSP, see here

Reading and Plotting JET Signals

On starting JETDSP, the following blank table will appear:

To read a signal into the program, choose the Read Signal option from the File menu.   This presents you with a dialog into which you can type the various components needed to define a signal:

Click 'Read' after you have filled in the fields.  The program will warn you if the values you give do not define a signal that it can load.

JETDSP will prompt you for a username and password. You will need to type in your JETNET username and password here. 

When the signal has been read, its name will appear in the table. 

The 'Read a signal' dialog is still visible, should you wish to define further signals. Click 'Done' to dismiss it.

It is possible to read more than one signal at a time using the read dialog. The pulse can be specified as several values and/or a range. For example,

Pulse string	Pulses loaded
50000	50000
40000,50000	40000 and 50000
40000-40010	All pulses between (and including) 40000 and 40010
50000,50002-50004	50000,50002,50003 and 50004

Note that the DDA/datatype listing is only for the first pulse in the dialog.

In a similar way more than one DDA/datatype can be specified by separating them by commas.

To plot all the signals, select 'Plot All Signals' from the 'Plot' menu. The signals will be plotted in a separate window. This is the View/Print window. The program can manage multiple copies of this window. Each time signals are plotted a new window is created.

It is possible to plot only a subset of the signals. To do this mark the signals by clicking in the first column, (labelled 'M'), and then select 'Plot Marked Signals' from the 'Plot' menu.

Note that a signal can be hidden by setting its plot number to 0 .

To add a signal to the new window, choose 'Add Signal' from the window's 'File' menu.   It will also be added to the main table, and may be used in new windows.