MI 3311 GammaPAT
Main menu and test modes
22
ESC
Returns to
Setup menu
without changes.
4.9 LCD contrast and backlight
In this menu the contrast and backlight mode of the LCD can be set.
Figure 1.13: LCD menu
Backlight modes:
AUTO
The high backlight level is active for 30 seconds after last pressing of any key.
Then the backlight level returns to low level until a key is pressed again.
OFF
Backlight level is low.
ON
Backlight level is high.
Keys:
TAB
Toggles between setup of contrast and backlight
/
Sets contrast value or backlight mode
TEST
Confirms selection and returns to
Setup menu.
ESC
Returns to
Setup menu
without changes.
Note:
If you press the down (
) key while starting up the instrument you will automatically
jump to the LCD contrast menu.
4.10 Checkbox
The in-built Checkbox provides a simple and effective means of checking the calibration of
the GammaPAT instrument and accessories. According to the Code of Practice the on-
going accuracy of the PAT tester should be verified at regular intervals and recorded. This
is of special importance if the PAT tester is used on a daily basis. The GammaPAT
includes an in-built Calibration Unit (‘Checkbox’) that is independent from the other
instrument’s electronic circuitry and connected directly to the output terminals of the
instrument. During the calibration with the in-built Checkbox all main instrument functions
and accessories can be verified. The calibration results are automatically stored into the
instrument’s memory and can be viewed with the PATLink PRO PC software.
Note:
The Checkbox feature should be used to ensure that the meter is reading correctly
between calibrations but should not be regarded as a substitute for a full
manufacturers calibration on the unit.
