Chapter 3
Configuring and Testing
©
National Instruments Corporation
3-13
Note
For more information on how to further configure the SCXI-1520, or how to use
LabVIEW to configure the module and take measurements, refer to Chapter 4,
Verifying the Signal in Traditional NI-DAQ (Legacy)
This section discusses how to verify the signal in Traditional NI-DAQ
(Legacy) using channel strings and virtual channels.
Verifying the Signal Using Channel Strings
The format of the channel string is as follows:
ob
x
!
sc
y
!
md
z
!
channel
where
ob
x
is the onboard E Series DAQ device channel, with
x
representing
a particular channel where the multiplexed channels are sent. This
value is 0 for DAQ device channel 0 in a single-chassis system. In a
multichassis or remote chassis system, the DAQ device channel
x
corresponds to chassis number
n
– 1, where DAQ device channel
x
is
used for scanning the
n
th chassis in the system.
sc
y
is the SCXI chassis ID, where
y
is the number you chose when
configuring the chassis.
md
z
is the slot position where the module is located, with
z
being the
particular slot number. The slots in a chassis are numbered from left to
right, starting with 1.
channel
is the channel that is sampled from module
z
.
Use the format
ob
x ! scy ! mdz !
n
to verify the signal, where
n
is a
single input channel.
Complete the following steps to use channel strings in verifying the signal:
1.
Expand the list of tasks and virtual channels by clicking the
+
next to
Devices and Interfaces
.
2.
Click the
+
next to
Traditional NI-DAQ Devices
to expand the
device list.
3.
Right-click the appropriate E Series DAQ device.
4.
Click
Test Panels
.
5.
Enter the channel string.
6.
Enter the input limits.