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PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
6.2.2.6 Clear Interrupt
Reading from 1Ch will clear the add-on interrupt.
6.2.2.7 The Analog Input Selection Register
Address 10h is used by the analog input channel selection register and address 14h is used by the
analog gain control selection register. Write 0-31 to port 10h to select the channel number (for
differential input, write 0-15). Write 0-3 to port 14h to select the gain control.
Analog
Channel select
Figure 6-2: Analog input control.
Notes:
1.
For Single-ended Inputs, channels 0-31 are available. For Differential Inputs, channels 0-15
are available. Input numbers which are more than the available channel will be discarded.
Thus, for single-ended inputs, only the last 5 bits are taken as the channel number. And for
differential inputs, only the last 4 bits are taken as the channel number.
2.
Only the last two digits are taken as the gain control code. The gain control code and the
corresponding gain is:
For PCI-1002L/LU and PEX-1002L:
[Bit1, Bit0]
Gain
For PCI-1002H/HU and PEX-1002H:
[Bit1, Bit0]
Gain
3.
These registers are set to 0 after powered-on or hardware reset signals.
AMP
Mux.
Select
Gain control
...
[0 0]
1
[0 0]
1
[0 1]
[1 0]
2
4
[0 1]
[1 0]
10
100
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 49
ADC
[1 1]
8
[1 1]
1000
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