B&K 2250 Light, User Manual, Page: 45 / 208

CHAPTER 4
Getting to Know Your 2250 Light
35
4.4.4 On-screen Feedback and Traffic Light
Feedback is given on screen in the Status Field, see Fig.4.2, and the Traffic Light indicates
important states of the instrument, see Table 4.2
:
4.4.5 Use of Stylus and Navigation Pushbuttons
The stylus and navigation pushbuttons are used for setting up 2250 Light, navigating through
the screens and managing the results.
A number of items that appear on the screen (parameter values or icons) can be selected,
updated and activated. For instance, a new parameter value can be selected from a drop-down
list.
The selection and activation of items on the screen can be done in two ways:
• Tapping once on the item on the screen will select and activate it, or
• Moving the field selector around using the navigation keys until the item you want is
highlighted, then pressing the
Accept pushbutton to activate it
You can choose to use the stylus or the pushbuttons, depending on your preference and the
measurement situation. For instance, if the amount of noise generated by the instrument needs
to be kept to an absolute minimum, consider using the pushbuttons rather than the stylus – this
is because tapping of the stylus on the touch-sensitive screen may create extra noise. However,
if speed is of major importance, the stylus can navigate through the setup and measurement
screens quicker.
Throughout the manual we have described how to perform the measurement procedures using
the stylus only, but you may also use the alternative method (using the Navigation and Accept
pushbuttons) if you prefer.
4.4.6 How to Change Parameter Values
Most parameter values are changed by selecting a new value from a drop-down list, which
appears when the parameter field is selected. See the example in Fig.4.3.
Table 4.2
Traffic Light Indica-
tions
State Light Scheme
During power-on or loading template Nothing
Stopped. Ready to measure Short yellow flash every 5 s
Awaiting trigger, searching for
calibration signal
Short green flash every second
Running measurement,
everything OK
Steady green light
Paused. Measurement not saved Slow yellow flash on 1/2 s, off
1/2 s
Overload Fast red flash