User manual

Chapter 4 Connecting Signals
© National Instruments Corporation 4-19 NI 6034E/6035E/6036E User Manual
Connecting Digital I/O (DIO) Signals
The NI 6034E/6035E/6036E device has digital I/O signals DIO<0..7> and
DGND. DIO<0..7> are the signals making up the DIO port, and DGND is
the ground-reference signal for the DIO port. You can program all lines
individually to be inputs or outputs.
Caution
Exceeding the maximum input voltage ratings, which are listed in Table 4-2, can
damage the NI 6034E/6035E/6036E device and the computer. National Instruments is not
liable for any damage resulting from such signal connections.
Figure 4-9 shows signal connections for three typical digital I/O
applications.
Figure 4-9. Digital I/O Connections
DIO<4..7>
DIO<0..3>
+5 V
LED
+5 V
TTL Signal
Switch
I/O Connector
DGND
UM.book Page 19 Monday, May 14, 2001 10:32 AM