Fluke tix640 User Manual page 65

The "Inverse" function can be used to invert the current
palette. For example, if the grayscale palette is set, the
low temperatures are indicated in darker colors when
compared to the higher temperatures by default. If the
"Inverse" function is activated for the grayscale palette,
the representation is inverted: The low temperatures are
now indicated in lighter colors and the higher
temperatures are now indicated in darker colors.
The "16 steps" function can be used to set the
representation of the palette from 256 color steps to 16
steps. Accordingly, only 16 temperature levels can be
indicated instead of 256, which is why differentiations
exceeding the 16 steps are no longer displayed on the
screen. Therefore, the scene is "summarized" to 16
"classes" of the same temperature levels.
The "Logarithmic" function can be used to toggle the
representation of the temperature values between a linear
and a logarithmic curve. By default, a linear curve is
selected to represent the temperatures. By activating this
function, it is possible to use a more differentiated
resolution for the low temperature range when compared
to the high temperature range. The effects of the
logarithmic representation are illustrated in Table 3-1.
On the left-hand side, the palette with temperature-linear
representation is shown. On the right-hand side, the
palette with logarithmic representation of the temperature
is shown. The logarithmic representation is recommended
for scenes with highly dynamic temperatures where,
regardless of the huge difference between maximum and
minimum temperature values, a differentiated
representation is important in the lower temperature
range. For instance, a printed circuit board with a "hot"
component, in which along with T
differences in the lower area of the image are also
interesting.
Whether the functions "Inverse", "16 steps", or
"Logarithmic" are activated is indicated by a checkmark
on the respective menu item. It is also possible to
combine the three variants with each other.
3
Display Menus
Image Submenu
, temperature
Max
3-13