Fluke Ti30 User Manual page 59

value in the scene (MAX). The MIN and MAX values are displayed at the beginning and at
the end of color scale. This mode does not require any other adjustment (other than
properly focusing the unit). Automatic mode is recommended every time the user first
starts looking at a given target since the temperature limits are unknown. This mode is also
recommended when the user is looking for fairly large temperature differences (such as,
looking for hot spots in electrical devices).
The Quick Image Fix feature is a sub set of the Automatic mode. This is a
Note:
convenient feature that fixes the MIN and MAX temperature values (level and gain)
and thus creates a more stable thermal image for the user to view. To quick fix the
image, simply press the Up button on the keypad once, and the temperature limits
will stop adjusting automatically. Fixing the temperature limits provides a more
comfortable experience for thermal image evaluation. The thermal boundaries
(highest and lowest temperature values) will adjust automatically again when you
record another image (see Recording an Image on page 28 for more information) or
by pressing the Up button again while in the Automatic measurement mode. The
Quick Image Fix feature is active only when the unit is set to Automatic mode.
Different from Automatic mode, Manual and Semi Automatic modes work jointly with
two adjustable parameters: Level and Gain. These two parameters are adjustable by using
the two thumbwheels located on the switch bay (see Figure 11 on page 20).
Level
Level is defined as the median point of a given temperature scale. For example, if the unit is
currently in Automatic mode, and there is a given thermal scene with MIN and MAX
temperature limits, the moment you switch the unit to Manual mode, the Level value is set
by the unit according to the following formula:
Gain is defined as a temperature band around the median point of the scale (Level). In the
same way described above, if the unit is currently set at Automatic mode, and there is a
given thermal scene with MIN and MAX temperature limits, then switching the unit to
Manual or Semi Automatic mode causes the Gain value to be set according to the
following formula:
Jan 31st, 2005
Gain
+
Max Min
=
Level
2
−
Max Min
=
Gain
2
- 59 -