Campbell Scientific SDM-AO4 4-Channel Continuous Analog Output Module User Manual
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SDM-AO4 Four Channel Analog Output
The SDM-AO4 has sixteen possible addresses, as shown in Table 2. The
address for an SDM-AO4 is hardware selectable using jumpers at locations J12
and J8, as shown in Figure 2. The jumper at location J12 represents the least
significant digit (LSD), and the jumper at location J8 is the most significant
digit (MSD). The digit zero (0) is nearest the edge of the board, and the digit
three (3) is the innermost jumper on the board. All SDM-AO4s are shipped
with the address set at zero (00).
Table 2. SDM-AO4 Addressing
Base 10
[CRBasic Loggers]
Base 4 [CR10(X),
21X, CR23X]
MSD
J8
LSD
J12
0 0
0
0
1 1
0
1
2 2
0
2
3 3
0
3
4 10
1
0
5 11
1
1
6 12
1
2
7 13
1
3
8 20
2
0
9 21
2
1
10 22
2
2
11 23
2
3
12 30
3
0
13 31
3
1
14 32
3
2
15 33
3
3
MSD = most significant digit LSD = least significant digit
Multiple SDM-AO4s connected to one datalogger must have
separate and sequentially increasing addresses.
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