Measurement Computing CIO-DAS08-AOH - Manual (Page 16)

The register's Write layout is :
BASE + 3 (Read / Write) Write Functions
R0 R1 R2 R3 X X X X
BIT 0 BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7
The register's Read layout is :
BASE + 3 (Read / Write) Read Functions
R0 R1 R2 R3 MA0 MA1 MA2 X
BIT 0 BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7
R3 to R0: Indicate the current analog input range.
MA2 to MA0: Indicate the analog input channel that is currently selected (by writing to base +2).
6.4.1CIO-DAS08-AOH GAIN/RANGES
The gain/range of the board is controlled by writing a control code to the Base + 3 register. The gain/range codes are:
0 1 1 0 6 6 +/-0.005 1000
0 1 1 1 E 14 +/-0.01 500
0 0 1 0 4 4 +/-0.05 100
0 0 1 1 C 12 +/-0.1 50
0 1 0 0 2 2 +/-0.5 10
0 1 0 1 A 10 +/-1 5
0 0 0 0 0 0 +/-5 1
0 0 0 1 8 8 +/-10 0.5
R0 R1 R2 R3 HEX DEC RANGE V GAIN
CONTROL CODES BI-POLAR AOH
1 1 1 0 7 7 0 to 0.01 1000
1 0 1 0 5 5 0 to 0.1 100
1 1 0 0 3 3 0 to 1 10
1 0 0 0 1 1 0 to 10 1
R0 R1 R2 R3 HEX DEC RANGE V GAIN
CONTROL CODES UNI-POLAR AOH
6.4.2 CIO-DAS08-AOL GAIN/RANGES
There are fewer ranges available for the CIO-DAS08-AOL. Gains of 2, 4 & 8 are often called binary gains. These
ranges are not available on the MetraByte DAS-8AO. The gain/range of the board is controlled by writing a control code
to the Base + 3 register.
0 1 1 0 6 6 +/-0.625 8
0 0 1 0 4 4 +/-1.25 4
0 1 0 0 2 2 +/-2.5 2
0 0 0 0 0 0 +/-5 1
0 0 0 1 8 8 +/-10 0.5
R0 R1 R2 R3 HEX DEC RANGE V GAIN
CONTROL CODES BI-POLAR AOL
12