Appendix C
– 34 –
PCI-1721 User’s Manual
Advantech Co., Ltd.
www.advantech.com
C.5 D/A Control - BASE+12H
Table C-4 PCI-1721 Register for D/A control
R_n
D/A channel n output voltage range
0
5 V
1
10V
UB_n
D/A channel n unipolar or bipolar output
0
Unipolar
1
Bipolar
MOD_n
D/A channel n output mode
0
Direct output (normal)
1
Waveform output
VREF_n
D/A channel n voltage reference source
0
Internal
1
External
Base Addr.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
12H
W
D/A Control Command
VREF
_3
VREF
_2
VREF
_1
VREF
_0
MOD
_3
MOD
_2
MOD
_1
MOD
_0
UB_3
R_3
UB_2
R_2
UB_1
R_1
UB_0
R_0
R
D/A Control Status
VREF
_3
VREF
_2
VREF
_1
VREF
_0
MOD
_3
MOD
_2
MOD
_1
MOD
_0
UB_3
R_3
UB_2
R_2
UB_1
R_1
UB_0
R_0
