Omega 1002 - Manual (Page 32)

3.2.2.6 Clear Interrupt
Reading from 1Ch will clear the add-on interrupt.
3.2.2.7 The Analog Input Selection Register
The analog input channel selection register uses address 10h 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 3-2. Analog input control.
Note:
1. For single ended inputs, channels 0-31 are available. For
differential inputs, channels 0-15 are available. If you enter a
channel number greater than the number available, those channels
will be ignored. 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 used as the gain control code. The gain
control codes and corresponding gains are shown below :
For OME-PCI-1002L:
Gain code [0 0] [0 1] [1 0] [1 1]
Gain 1 2 4 8
…
Analog inputs
…
Channel select
Analog
Mux.
Select
Gain control
ADC AMP
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