The Display Menu

The display menu allows the user to choose between lookup tables and to change the contrast of the display. There are two lookup tables, a colour table and a greyscale. When driven from the Mouse interface, the chosen table always covers a range between 0 and 2 , where n is in the range 1 to 16. However the display wraps around, so the full range of allowed data values (0 to 65535) is covered by 2 wraps of the lookup table.

The following options can be selected by placing the cursor on the option name on the display menu and pressing :-

• GREY - Selects the Greyscale lookup table and leaves the user in the Display menu.
• COLOUR - Selects the Colour lookup table and leaves the user in the Display menu.
• REVERSE - Reverses the lookup table and leaves the user in the Display menu.
• SHIFT - After selecting this option with , pressing again increases the contrast of the display, i.e. reduces the range that one wrap of the lookup table covers, by a factor of two. decreases the contrast of the display, i.e. increases the range that one wrap of the lookup table covers, by a factor two. returns the user to the Display menu, leaving the lookup table as it was last set.
• NORMAL -