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VLM1/VLM1B User Manual 8
Introduction
The UNIBLITZ VLM1/VLM1B Interface Module is a convenient signal interface unit to control the
UNIBLITZ FS shutter series from a +5V TTL control signal. The FS shutter requires only +5VDC to
open and 0VDC to close – default position of the FS25/FS35 is closed. Although the interface circuit is
quite simple, for those who do not wish to build their own interface, the
VLM1/VLM1B available.
The FS shutters can be operated (activated open) simply by p5VDC (on the actuator coil’s RED
wire) and 0VDC (ground) on the actuator coil’s BROWN wire. The
VLM1/VLM1B provides the
switching circuit, BNC interconnects, USB interface, etc., to easily operate any shutter in the FS series.
Controlling the shutter from the front panel switch, from any +5V TTL signal, (the duration of this pulse
is, approximately, the exposure time of the shutter), or a computer’s USB port. See Figure #8, which
provides the Schematic Diagram for additional information on the
VLM1/VLM1B operation.
Note: Under certain circumstances two VLM1/VLM1B Interface Modules may be operated from one
power supply. If the user requirement does not require that shutters open simultaneously, two drivers
may be operated from one USB5, +5VDC/1A supply. For further information and guidance please
discuss your specific application with a Vincent Associates technical representative.