Measurement Computing CIO-DAS48-I - Manual (Page 12)

CIO-DAS48-I User's Guide Installing the CIO-DAS48-I
12
Pinout – main I/O connector
The CIO-DAS48-I I/O connector is a standard 50-pin header connector that is accessible from the rear of the
computer through the expansion backplate.
LLGND 50
CH 23 IN LO 48
CH 22 IN LO 46
CH 21 IN LO 44
CH 20 IN LO 42
CH 19 IN LO 40
CH 18 IN LO 38
CH 17 IN LO 36
CH 16 IN LO 34
CH 15 IN LO 32
CH 14 IN LO 30
CH 13 IN LO 28
CH 12 IN LO 26
CH 11 IN LO 24
CH 10 IN LO 22
CH 9 IN LO 20
CH 8 IN LO 18
CH 7 IN LO 16
CH 6 IN LO 14
CH 5 IN LO 12
CH 4 IN LO 10
CH 3 IN LO 8
CH 2 IN LO 6
CH 1 IN LO 4
CH 0 IN LO 2
49 LLGND
47 CH 23 IN HI
45 CH 22 IN HI
43 CH 21 IN HI
41 CH 20 IN HI
39 CH 19 IN HI
37 CH 18 IN HI
35 CH 17 IN HI
33 CH 16 IN HI
31 CH 15 IN HI
29 CH 14 IN HI
27 CH 13 IN HI
25 CH 12 IN HI
23 CH 11 IN HI
21 CH 10 IN HI
19 CH 9 IN HI
17 CH 8 IN HI
15 CH 7 IN HI
13 CH 6 IN HI
11 CH 5 IN HI
9 CH 4 IN HI
7 CH 3 IN HI
5 CH 2 IN HI
3 CH 1 IN HI
1 CH 0 IN HI
Figure 5. I/O connector pin-out
Current connections are made between CH# HI and CH# LOW. The positive terminal of the current to be
measured must be connected to CH# HI (refer to Current loop measurements on page 13).
Cabling
The red stripe
identifies pin # 1
50-pin Female
IDC connector 50-pin Female
IDC Connector
1 2
49 50
2
50
1
49
Figure 6. C50FF-x cable
Field wiring, signal termination, and conditioning
You can use the following cabling, screw termination, and signal conditioning products with the CIO-DAS48-I.
 CIO-MINI50 – 50-pin screw terminal board
 CIO-SPADE50 — 16" X 4" termination panel which mates with both 37-pin and 50-pin connectors.
Details on these products are available on our web site at
www.mccdaq.com/products/screw_terminal_bnc.aspx .