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MX Control Card Configuration
A-16 Vicon MX Hardware System Reference
Important
If you specify Frames , MicroSeconds, and Ticks, all values are added
together to determine the offset.
GPIO Electrical Specifications
Table A-6 provides electrical specifications for the GPIO socket
(GPI=General Purpose Input, GPO=General Purpose Output).
MicroSeconds The number of microseconds after
which the pulse is to be repeated.
Ticks The number of 27 Mhz clock ticks of
the MX timing reference after which
the pulse is to be repeated.
Table A-6: GPIO Socket Electrical Specifications
Component Specification
GPO Optically isolated
Maximum External Voltage
Load
18 V when controlling devices
connected to an external voltage
source.
All GPOs are driven from a single channel of the output optocoupler.
Each open collector output is connected internally to the +5 V supply
via a 270
resistor and a diode. This output behaves in a similar
manner to a TTL signal. When connected to a high impedance load,
the output swing is between 0 V-4.3 V.
GPI Optically isolated
All GPIs are connected directly to one channel of the high CMR
optocoupler. Connecting any one of these inputs to 0 V activates the
required function.
MXhardware_Reference.book Page 16 Monday, April 30, 2007 1:56 PM
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