Elektra CPU User Manual V1.00
Page 18
4.8 Data Acquisition I/O Connector – J14 (Models with Data Acquisition only)
ELEKTRA includes a 50-pin header labeled J14 for all data acquisition I/O. This header is located
on the left side of the board. Pin 1 is the lower right pin and is marked on the board. Diamond
Systems’ cable no.
C-50-18
provides a standard 50-pin connector at each end and mates with
this header.
DIO A0
1
2 DIO
A1
DIO A2
3
4 DIO
A3
DIO A4
5
6 DIO
A5
DIO A6
7
8 DIO
A7
DIO B0
9
10 DIO
B1
DIO B2
11
12 DIO
B3
DIO B4
13
14 DIO
B5
DIO B6
15
16 DIO
B7
DIO C0
17
18 DIO
C1
DIO C2
19
20 DIO
C3
DIO C4 / Gate 0
21
22
DIO C5 / Gate 1
DIO C6 / Clk 1
23
24
DIO C7 / Out 0
Ext Trig
25
26 Tout
1
+5V Out
27
28 Dground
Vout 0
29
30 Vout
1
Vout 2
31
32 Vout
3
Aground (Vout)
33
34 Aground
(Vin)
Vin 0
35
36 Vin
8
Vin 1
37
38 Vin
9
Vin 2
39
40 Vin
10
Vin 3
41
42 Vin
11
Vin 4
43
44 Vin
12
Vin 5
45
46 Vin
13
Vin 6
47
48 Vin
14
Vin 7
49
50 Vin
15
Table 9: J14 – Data Acquisition Connector Pin out
Signal Name
Definition
DIO A7-A0
Digital I/O port A; programmable direction
DIO B7-B0
Digital I/O port B; programmable direction
DIO C7-C0
Digital I/O port C; programmable direction
C7-C4 may be configured for counter/timer signals; see page 48
Ext Trig
External A/D trigger input
Tout 1
Counter/Timer 1 output
Vin 7/7+ ~ Vin 0/0+
Analog input channels 7 – 0 in single-ended mode;
High side of input channels 7 – 0 in differential mode
Vin 15/7- ~ Vin 8/0-
Analog input channels 15 – 8 in both single-ended mode;
Low side of input channels 7 – 0 in differential mode
Vout0-3
Analog output channels 0 – 3
+5V Out
Connected to sw5V supply
Aground (Vout), (Vin)
Analog ground; used for analog circuitry only
Vout pin is for the analog outputs; Vin pin is for the analog inputs
Dground
Digital ground; used for digital circuitry only
