SCHOTT VisiLED MC 1500 Manual page 57

• Whenever a new delay time is sent from the PC to the controller automati-
cally the accuracy of setting the delay by MC 1500 is adjusted. It amounts
always to 0,5% of the set delay time. For this reason it is not possible to store
different delay times from PC correctly in the different memory stations of the
MC 1500. We recommend to use in trigger mode one memory station only.
Alternatively identical delay times could be stored in all used memory stations.
When the computer is controlling the MC 1500 the pulse duration of the indivi-
dual pulse can be set to the exact µs. In addition the pulse intensity can be
adjusted by the exact percentage for each LED unit. When the pulse duration is
less than 10 ms an overdrive of the pulse intensity up to 300% of the continuous
light is possible. Otherwise the maximum intensity is 100%.
In flash mode the set mixed light can be momentarily intensified by an intensive
single pulse so that the exposure times of connected photo equipment can be
reduced – the mixed light "flashes".
The MC 1500 controller possesses a connection for a flash cable (14). A corres-
ponding cable can be connected to cameras or micro-photographic equipment
via an S contact.
When recording an image the LED illumination system emits a photoflash in ad-
dition to the set continuous light. In this way the intensity of each unit is momen-
tarily increased by a factor of 4. So the set mixed light characteristics remain
constant during flashing!
To avoid the illumination heads being overloaded the flash is only emitted if both
illumination units are in the 0 to 3 brightness range. In addition the -strobe and
trigger mode must be deactivated for both LED illuminations.
• A maximum of two green LEDs of the display (4) must be lit up for each
VisiLED unit. Please also check the second unit by pressing (1).
• The flash intensity automatically results from the light intensity setting of the
continuous light. The highest intensity of the flash pulse is 236% when the
affected LED unit is set to 59% brightness.
• The flash pulse is triggered by bypassing the contacts of the flash connection
(14) on the back of the controller (3.5 mm jack socket).
When the computer is controlling the MC 1500 the flash duration can be set to
the exact µs.
The flash is always emitted simultaneously for both illuminations. If only the
flashing of one of the VisiLED units is required then the second LED unit should
be dimmed down to 0 brightness
Flash mode
Please note
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