Texas Instruments VCA8500BOARD, User Manual, Page: 6 / 17

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VCA8500BOARD Full-Access Software
When the VCA8500BOARD is controlled by the software, any input to the VCA8500 can be routed to any
of the CW outputs via the CW Options selections. Each input channel is listed with a pull-down menu to
select any of the ten available outputs (CW0 to CW9) or the Overflow option, which effectively disables the
channel.
Figure 4 shows this process.
Figure 4. CW Options Selection
Once all the selections have been made, click Download to send the data to the VCA8500. It is possible,
because of the flexible nature of the software, to direct all inputs to one output. This is permissible and can
be supported as long as the output amplifiers in the CW current-to-voltage converters are driven with a
±
15-V supply (P3); also, W2 and W3 need to be open. The maximum output current from one input
channel is 3 mA.
6 VCA8500BOARD SLOU216 – January 2008
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