PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 49
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.
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]
[0 0]
[0 1]
[1 0]
[1 1]
Gain
1
2
4
8
For PCI-1002H/HU and PEX-1002H:
[Bit1, Bit0]
[0 0]
[0 1]
[1 0]
[1 1]
Gain
1
10
100
1000
3.
These registers are set to 0 after powered-on or hardware reset signals.
…
Ana
lo
g i
np
uts
…
Channel select
Analog
Mux.
Select
Gain control
ADC
AMP
