Figure 3-11. Examples Of Dio Applications - National Instruments NI 4350 User Manual

Chapter 3 NI 4350 Operation
Caution:
!
NI 4350 User Manual
The DIO lines of the NI 4350 instrument are protected against damage
from voltages within – 0.5 and +5.5 V with respect to digital ground
(DGND). You should never apply voltages above these levels to these
signals.
To prevent possible safety hazards, the voltage applied to the digital I/O
lines should never be outside –0.5 V and +5.5 V, with respect to DGND.
LED
R
1
TTL or CMOS
R
2
SW
R
3
NPN Transistor
R
4

Figure 3-11. Examples of DIO Applications

3-28
+5 V
DIO0 (configured as an output)
DIO1 (configured as an input)
DIO2 (configured as an input)
DIO3 (configured as an input)
DIO3 (configured as an output)
DGND
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