12
•
Registers Format
The combinations of CH4 ~ CH0 and their corresponding channel number is
listed in the table 3.2 below.
Channel No.
CH4
CH3
CH2
CH1
CH0
0
0
0
0
0
0
1
0
0
0
0
1
2
0
0
0
1
0
3
0
0
0
1
1
:
30
1
1
1
1
0
31
1
1
1
1
1
Table 3.2 Channel Multiplexering
3.4 A/D Range Control Register
The A/D range register is used to adjust the analog input ranges for A/D
channels. Two factor will effect the input range: Gain and Bipolar/Unipolar.
Both of these issues can be controlled by this register. The Table 4.2 shows
the relationship between the register data and the A/D input range.
Address:
BASE + 9
Attribute:
write only
Data Format:
Bit
7
6
5
4
3
2
1
0
X
X
X
X
X
G2
G1
G0
The relationship between input voltage range, maximum input voltage and
gain is specified as the equation:
Analog Input Range = Maximum Input Voltage / Gain
Summary of Contents for NuDAQ ACL-8113A
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