User Manual Instruction Manual

87 Publication 1746-UM009B-EN-P - September 2007
Appendix C
Module Input and Output Circuits
These wiring diagrams show the input circuit, voltage output, and
current output for the fast analog modules.
Input Circuit for 1746-FIO4V and 1746-FIO4I Modules
Voltage Output Circuit for 1746-FIO4V Modules
>
>
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IN –
IN +
ANL
COM
S1, S2
250 Ω
500K
500K
33pF
500K
–
+
33pF
500K
Filter A to D
Switches S1 and S2 control
whether the input circuit is for
current (closed) or voltage (open).
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>
>
Positive Voltage Supply
0.022 µF
0.022 µF
1 µF
30K
120
OUT
ANL
COM
Negative Voltage Supply
R1
R2
from
DAC
–
+