|
Cursor Key Control of Sine Testing
The VibeLab controller can be manually controlled
in sine testing using the normal manual up, down, left and right
arrow keys. An easier method of manual sine control is available
for investigation of resonances or other pseudo-stationary sine
testing by means of the keyboard cursor keys. With VibeLab's Run
Sine Test screen showing, enable both the manual sweep and manual
amplitude functions at the bottom of the display graph, and mouse
click on the green "Arrow Keys" button in the lower right. It will
illuminate and the cursor keys on the computer keyboard will control
VibeLab's output signal. The Up and Down cursor (arrow) keys will
control the signal amplitude while the right and left keys, the
frequency. Of course, Up for more vibration, Down for less, Right
arrow for higher frequency, Left arrow for lower frequency. Use
caution when sweeping down manually, the shaker displacement will
come up dramatically below 50 Hz when the signal amplitude is held
constant! Also, watch the system level meter to avoid overdriving
the shaker system.
----------------------------------------------------------------------------------------------------------------------
AutoFit
Did you know... That if you hold down the
shift key when you click the GRAPH button, Vibelab will automatically
size the applicable graph to fit the programmed response? It is
the same as clicking the GRAPH button followed by clicking on the
Graph menu AUTO button, but saves the extra mouse click. This is
particularly useful for re-centering your data after you have changed
the programmed spectrum or sine sweep breakpoints. Saving the Program,
Test or Preferences, will insure that the new graph settings will
be automatically recalled the next time the program is referenced.
----------------------------------------------------------------------------------------------------------------------
Pointer Help
Want some quick help remembering the functions
of the various VibeLab controls? Try enabling the POINTER HELP under
the HELP menu button on any VibeLab screen. A pause over any control
will result in a brief description of the various functions of that
control. A little like "Balloon Help" but we think a little
more helpful. Hitting the (?) button and then the control in question
will give even more info about the control.
----------------------------------------------------------------------------------------------------------------------
Meter Panel
Don't forget that a simple click anywhere
on the meter panel of the Run screens will toggle the meter between
the Control channel display and the Individual channel display showing
the overall levels for all of the channels simultaneously.
|
