RC1xx - User Manual
7
General description
Three modes of operation are provided for the light output:
Continuous
– the output is constant, but variable between 0% and 100%
in steps of 0.1%.
Pulse
(strobe) – the output is pulsed once per trigger. The delay from
trigger to pulse, the pulse duration and the brightness can all be set.
Switched
– the trigger input can be used to switch the output current on
and off.
The set-up is non-volatile, so the RC1xx resumes the same operation after
a power cycle.
7.1
Pulse and duty cycle limits
The output is off by default. Upon being triggered, the RC1xx pulses to the
output after a delay. The delay, pulse width, re-trigger delay, and pulse
intensity are all configurable (see
Section 10, Configuration commands
).
In pulse and switched modes, the brightness can be set up to 1000% of its
rating for short periods and low duty cycles. To avoid damage to the
lighting, the RC1xx limits the duty cycle by ignoring triggers that are too
soon after the previous trigger. The maximum pulse width and duty cycles
are shown below:
Output brightness
Maximum
pulse
width
Maximum
duty
cycle
0 to 100%
100ms
100%
101% to 200%
30ms
30%
201% to 300%
10ms
20%
301% to 500%
2ms
10%
501% to 1000%
1ms
5%
So for example, if the brightness is set to 250%, then the RC1xx does not
allow pulses greater than 10ms long. With 10ms pulses, any trigger
occurring within the next 50ms is ignored as the duty cycle would be
greater than 20%.
The RC100 pulsed current cannot exceed 1.0A, so for a lighting rating of
0.1A, 1000% brightness is possible. For 0.25A lighting rating the maximum
brightness is 400%.
Similary the RC120 pulsed current cannot exceed 2A, so for a lighting
rating of 0.2A, 1000% brightness is possible. For 0.5A lighting rating the
maximum brightness is 400%.
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