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HA0378T Rev C Feb 2019
Chapter 4
4.6.4 Moving the Piezo using the ‘Output’ control
The ‘Output’ control is used to adjust and set the voltage or position output as
displayed in the main digital display. If the channel is in closed loop mode (set using
the 'closed loop' button on the panel) then this control can be used to adjust position
output. If open loop mode is selected (using the 'open loop' button) then the control is
used to adjust the voltage output.
1) Click the ‘Closed Loop’ button.
2) Click the ‘Position’ button.
3) Rotate the ‘Output‘ control clockwise. Notice how the position display increments
to show the increasing piezo position.
4) Rotate the ‘Output’ control anticlockwise. Notice how the position display
decrements to show the decreasing piezo position.
5) Click the ‘Voltage’ button. Notice how the display changes to show the voltage
associated with the current piezo position.
Note
The read out in the main digital display is independent of the operating
mode (open or closed loop) selected for the particular channel. If the
'Volts' button is selected, then the read out is in volts, even if the channel
is in closed loop mode and the Output control is being used to adjust
position. Similarly, if the 'position' button is selected, the read out is in
microns, derived from the position feedback signal, even if the channel is
operating in open loop.
