Cs152 (Joystick Backwards Compatibility) - Prior Scientific ProScan III Manual

4.12 CS152 (Joystick Configuration backwards compatibility)
These commands are only applicable to CS152 Joysticks and not for the PS3J100
Interactive Control Centre.
The CS152 range of joysticks is compatible with the ProScan system and any one can be
used depending on the system configuration as follows;
CS152Z Z only digipot
CS152V2 2 axis joystick
CS152V3 3 axis joystick
CS152DP 2 axis joystick with digipot for Z axis.
CS152EF 2 axis joystick with digipot for Z axis with 'fire' button.
The CS152Z is used for the control of a system equipped with only a Z-axis. It has a large
round digipot control which provides fine control of the focus motor. A button is
provided to change the focus motor speed range and there are two further buttons which
can be used for coarse focus control by driving the focus up or down while the button is
pressed.
Joysticks may be fitted with up to 3 buttons, 2 long 'hot keys' on either side of the joystick
and a 'fire' button on top of the joystick. In addition, there are 2 small sliding buttons, one
to the side and one below the joystick. These provide spring loaded tension to the
joystick which ensures it always returns to its vertical 'off' position. Ensure these sliding
buttons are fully home and the joystick is held vertically before turning the system on.
The joystick can be used to control the speed and direction of the stage. A small
deflection of the joystick results in slow stage movement while a large deflection provides
high speed movement. The direction of movement of the joystick normally produces a
corresponding movement of the stage. For example, moving the joystick to the left will
move the stage left. Please note however, that there are commands available to reverse
the direction of the stage on one or both axes (see Advanced Operation).
The CS152DP and CS152EF joysticks are fitted with a round digipot control on the side of
the joystick box. This is used for fine focus control. The digipot is a rotary encoder which
comprises a disc with radial lines and 2 LED detectors. As the disc is rotated by the knob,
the encoder generates two square wave signals. One controls the amount of movement
while the other monitors the direction of movement. This provides precise positioning of
the fine focus knob on the microscope while the system continuously keeps track of the
actual position. The ProScan controller offers a specific command ('BUTTON') which can
be used to change the function of any of the buttons on the joystick.
© Prior Scientific Instruments Ltd Version 1.12 June 2017
ProScan® III Manual
Page 61