Chapter 5
Analog Output
5-4
ni.com
Analog Output Digital Triggering
Analog o
u
tp
u
t s
u
pports two different triggering actions:
•
Start trigger
•
Pa
u
se trigger
A digital trigger can initiate these actions on USB-621
x
devices. Refer to
and
sections for more
information abo
u
t these triggering actions.
Connecting Analog Output Signals
AO <0..1> are the voltage o
u
tp
u
t signals for AO channels 0 and 1.
AO GND is the gro
u
nd reference for AO <0..1>.
Fig
u
re 5-2 shows how to make AO connections to the device.
Figure 5-2.
Analog Output Connections
Lo
a
d
Lo
a
d
V OUT
V OUT
+
–
+
–
AO GND
AO 1
An
a
log O
u
tp
u
t Ch
a
nnel
s
U
S
B-621
x
Device
AO 0
Ch
a
nnel 1
Ch
a
nnel 0
Digit
a
l
I
s
ol
a
tor
s
I
s
ol
a
tion
B
a
rrier
(U
S
B-6215/
6216/6218
device
s
only)
