Measurement Computing CIO-DAS16 - Manual (Page 10)

A BP-37 will bring the signals to a backplate with a 37 pin male connector
mounted in it.
A standard C37FF-2 may be run alongside the analog connector through the
gap in the expansion slot backplate, or may be connected to the BP-37.
2.2 ANALOG INPUTS
Analog inputs to the CIO-DAS16 can be connected in three different
configurations:
O Single-Ended
O Floating Differential
O Differential.
Figure 2-2. Digital Connector
WARNING - PLEASE READ
Measure the voltage between the ground signal at the signal source and the PC. Using a voltmeter, place
the red probe on the PC ground and the black probe on the signal ground. If there is more than 10 volts
(AC or DC), do not connect the CIO-DAS16 to this signal source because you will not be able to make
any reading. If more than 30 volts, DO NOT connect this signal to the CIO-DAS16 because it will
damage the board and possibly the computer. Voltages over 24V can be hazardous. Use great care
when measuring voltages.
SINGLE-ENDED
A single-ended input has two wires connected to the CIO-DAS16; a channel high (CH# HI) and a Low Level Ground
(LLGND). The LLGND signal must be the same ground the PC is on. The CH# HI is the voltage signal source.
Figure 2-3. Single-Ended Input Configuration
6
P O R T A 0
P O R T A 1
P O R T A 2
P O R T A 3
P O R T A 4
P O R T A 5
P O R T A 6
P O R T A 7
P O R T C 0
P O R T C 1
P O R T C 2
P O R T C 3
P O R T C 4
P O R T C 5
P O R T C 6
P O R T C 7
G N D
+ 5 V
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
8
7
6
5
4
3
2
1
1 9
1 8
1 7
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
G N D
+ 5 V
G N D
N C
G N D
N C
G N D
N C
G N D
P O R T B 0
P O R T B 1
P O R T B 2
P O R T B 3
P O R T B 4
P O R T B 5
P O R T B 6
P O R T B 7
N C
N C
CIO-DAS16 DIGITAL CONNECTOR - The connector
is mounted at the rear of the CIO-DAS 16.
+
-
GND
V+
H I
V s V s + V c m
G
S
I
G
N
A
L
g 1 g 2
+
-
19
37
34
15
18
17
16
36
35
DIFFERENTIAL
AMP
TO A/D
LL GND
CH 0 HI
SIGNAL ENDED INPUT - A channel high (CH 0 HI) and a low level ground
(LLGND) are connected to the CIO-DAS16.