Contec AD12-16(PCI), Руководство пользователя

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Functions and Operating Procedures
AD12-64(PCI), AD12-16(PCI)
36
Specifying input range
"Input range" is the voltage range for inputting analog signals.
Input ranges are specified for each channel. The voltages within
the specified range are converted into a digital signal, in 12 bit
resolution.
Input ranges are specified for up to 64 channels. On the
AD12-64(PCI) system, however, data specified for channels from 0
~ 31 is valid when differential input is specified for analog input.
On the AD12-16(PCI) system, data for channels from 0 ~ 15 is
valid when single-ended input is specified, or data for channels
from 0 ~ 7 is valid when differential input is specified.
The following are the control ports for specifying input range:
Table 4.1. Input range and setting data
Figure 4.3. Procedures for setting
input range
+8
(+08h)
Command
0 0 0 0 0 1 0 0
Output
D 7
D 6
D 5 D 4 D 3 D 2 D 1 D 0
+12
(+0ch)
Setting data 0 (channel)
Channel
Data 6
Channel
Data 4
Channel
Data 2
Channel
Data 1
+13
(+0dh)
Setting data 1 (range)
Channel
Data 5
Channel
Data 7
Channel
Data 3
Channel
Data 0
Range
Data 7
Range
Data 6
Range
Data 5
Range
Data 4
Range
Data 3
Range
Data 2
Range
Data 1
Range
Data 0