Measurement Computing CIO-DAS08-AOH - Manual (Page 9)

3.6 D/A SIMULTANEOUS UPDATE JUMPER
The dual D/A converter can be updated simultaneously or individually. A jumper controls this feature.
When the jumper (see Figure 3-6) is in the NORMAL position, the DAC low byte is written to first, then the high byte (4 bit
nibble). When the high byte is written, the DAC output is updated.
When the jumper is in the SIM position, both DACs outputs are updated when you read from DAC 0 Low Byte. First you
must load the new output value into both or one DAC, then when the DACs have the correct output value loaded, read from
BASE + 8 and the outputs will be updated. Analog Output Range Select Switches
D/A Simultaneous
Update Jumper
Figure 3-6. CIO-DAS08-A0x Board Layout
3.7 INSTALL THE CIO-DAS08-AOx IN THE COMPUTER
Turn the power off.
Remove the cover of your computer. Please be careful not to dislodge any of the cables installed on the boards in your
computer as you slide the cover off.
Locate an empty expansion slot in your computer.
Push the board firmly down into the expansion bus connector. If it is not seated fully it may fail to work and could short
circuit the PC bus power onto a PC bus signal. This could damage the motherboard in your PC as well as the
CIO-DAS08-AOx.
5