Measurement Computing CIO-EXP-RTD16 - Manual (Page 8)

3.4 CONNECTING THE CIO-EXP-RTD16 TO THE A/D BOARD
3.4.1 Connecting to a DAS08 Series A/D Board
A CIO-DAS08 series board may be connected directly through a C37FF series cable from the P1
connector on the CIO-EXP-RTD16 to the A/D analog connector. The JB10 jumper should be left in the
DAS08 position as set at the factory.
3.4.2 Connecting to a DAS16 Series A/D Board
The CIO-EXP can be used with DAS16 series boards, expanding the DAS16's 16 inputs to 256 inputs.
The connection requires a special 37-conductor cable (CEXP2DAS16-10) since pin relationship of
CIO-EXP and DAS16 signals is not 1:1.
Install the CEXP2DAS16-10 cable connector labeled “MUX” into the P1 connector of the
CIO-EXP-RTD16 board and the other end into the DAS16 series board’s analog connector.
3.4.3 Other A/D Boards
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
OUTPUT 0
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
OUTPUT 6
OUTPUT 7
+5 VOLTS FROM PC
POWER GROUND
NC
NC
NC
NC
NC
NC
NC
NC
NC / LLGND
LLGND / OUTPUT 8
OUTPUT 9
OUTPUT 10
OUTPUT 11
OUTPUT 12
OUTPUT 13
OUTPUT 14
OUTPUT 15
MUX ADDR 4
MUX ADDR 3
MUX ADDR 2
MUX ADDR 1
NC
NC
NC
NC
NC
NC
If you need to connect to a board other than
those described above, call technical support.
We may have the cable you need.
Alternatively, you could use this connector
diagram to construct a cable.
The signal from the CIO-EXP-RTD16 is a
multiplexed voltage from each RTD input to a
single jumper-selected channel and an analog
ground (LLGND). There should be no voltage
between analog ground and power ground.
The MUX address lines control the setting of
the channel multiplexer. When all are low, the
mux is set to channel 0. The lines are binary
coded with MUXADDR1 being the LSB and
MUXADDR4 being the MSB.
The output digital address lines from an A/D
card are typically named Dig. Out 0 to Dig.
Out 3 respectively.
Figure 3-4. 37-Pin Connector Pin-out
4