B-6
Table B-2. Main I/O Connector Pin Assignments
for the DAS-801 / DAS-802
Pin
Name
Function
1
+12 V
+12 V power from host computer
2
CLK0
8254 C/T0 clock input
3
OUT0
8254 C/T0 output
4
CLK1
8254 C/T1 clock input
5
OUT1 /
CCLK
8254 C/T1 output / conversion
clock output
6
OUT2
8254 C/T2 output
7
OP1
Digital output bit 0
8
OP2
Digital output bit 1
9
OP3
Digital output bit 2
10
OP4
Digital output bit 3
11
DIG COM
Digital common
12
IN7
−
Analog input channel 7 (
−
)
13
IN6
−
Analog input channel 6 (
−
)
14
IN5
−
Analog input channel 5 (
−
)
15
IN4
−
Analog input channel 4 (
−
)
16
IN3
−
Analog input channel 3 (
−
)
17
IN2
−
Analog input channel 2 (
−
)
18
IN1
−
Analog input channel 1 (
−
)
19
IN0
−
Analog input channel 0 (
−
)
20
−
12 V
−
12 V power from host computer
21
GATE0
8254 C/T0 gate input
22
GATE1
8254 C/T1 gate input
23
GATE2
8254 C/T2 gate input
24
INT_IN /
XCLK
External interrupt input / external
clock source input