GARDASOFT CL190, User Manual

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CL190/CL191 Lens Controller - User Manual
7 General description
Three modes of operation are provided for the lens output:
Continuous – the output is constant, and can be set to any value
between the minimum and maximum optical power of the lens.
Switch – the trigger input can be used to switch the output between an
active optical power value and an idle optical power value.
Analog - the output is controlled by an analogue signal on the trigger input
which can vary the optical power between the minimum and maximum
power of the lens.
Additionally, using configuration commands, you can select a range of
waveforms to output (see
Section 9.6 , Waveform commands ), and
program a timed sequence of optical power settings (see Section 9.7 ,
Programmable step commands ).
Note: The time to reach stable focus depends on various conditions,
including how much the focus is changing by and the acceptable
tolerance. Depending on conditions the focus time is around 6ms to 10ms.
The set-up is non-volatile, so the CL191 resumes the same operation after
a power cycle.
7.1 Triggering
Trigger pulses should have a minimum pulse width of 2µs and be between
10V and 24V. You can set the sense of the CL191 trigger input. Do this by
setting the P flag using the
RE command (see Section 9 , Configuration
commands ). The effect of setting the P flag is summarised below:
Mode P Flag Output
Continuous Unused Focus is set to the Active focus.
Switched P Flag = 1 Focus is Idle when trigger is off,
Focus is Active when trigger is on.
P Flag = 0 Focus is Active when trigger is off,
Focus is Idle when trigger is on.
Analog Unused Focus is controlled by varying the
analog input voltage (see Section 7.1.1 ,
Trigger input options).
Note: The P flag inverts the sense of the trigger.
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