8 analog input range register, 9 pacer clock data & control registers – Measurement Computing PC104-DAS16JR/12 User Manual
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3.8 ANALOG INPUT RANGE REGISTER
BASE ADDRESS + 11
G0
G1
Uni/Bip
Range
X
X
X
X
0
1
2
3
4
5
6
7
Table 3-4. Input Range Codes PC104-DAS16Jr/12
7
0 to 1.25V
1
1
1
0
6
0 to 2.5V
0
1
1
0
5
0 to 5V
1
0
1
0
4
0 to 10V
0
0
1
0
3
±0.625V
1
1
0
0
2
±1.25V
0
1
0
0
1
±2.5V
1
0
0
0
0
±5V
0
0
0
0
8
±10V
0
0
0
1
DECIMAL
INPUT RANGE
G0
G1
UNI/BIP
RANGE
Table 3-5. Input Range Codes PC104-DAS16Jr/16
7
0 to 1.25V
1
1
1
0
6
0 to 2.5V
0
1
1
0
5
0 to 5V
1
0
1
0
4
0 to 10V
0
0
1
0
3
±1.25V
1
1
0
0
2
±2.5V
0
1
0
0
1
±5V
1
0
0
0
0
±10V
0
0
0
0
DECIMAL
INPUT RANGE
G0
G1
UNI/BIP
RANGE
A write to this register sets the analog input range for all 8/16 analog inputs. For the
PC104-DAS16Jr/12, range is programmable; the lower four bits set the analog input
range. For the PC104-DAS16Jr/16, the lower two bits set the range; the Uni/Bip bit is
set by hardware and the Range bit is not used. The upper four bits are not used for
either board. The current range is determined by reading this register.
3.9 PACER CLOCK DATA & CONTROL REGISTERS
8254 COUNTER 0 DATA
BASE ADDRESS + 12
D1
D2
D3
D4
D5
D6
D7
D8
0
1
2
3
4
5
6
7
18