Chapter 1
Setting up the SC-2345/2350 Carrier
©
National Instruments Corporation
1-9
SC-2345/2350 Carrier User Manual
d.
For each SCC module physically installed in the SC-2350 carrier,
add a corresponding entry in the SC-2350 Configuration window.
Click the drop-down listbox and select the correct module. If the
module name does not appear in the list, either the module is not
allowed in that location or you do not have NI-DAQ 7.4 or later. If
you do not have the current version of NI-DAQ, download it from
ni.com/downloads
.
e.
MAX automatically scans the SCC modules you select for IEEE
P1451.4 sensors that are compatible with TEDS. If MAX finds a
TEDS, MAX scans and maps a TEDS icon and information under
the SCC module in MAX. For more information, refer to the
TEDS
section.
6.
Click
OK
after completing all SCC module entries.
7.
Click
OK
to complete the configuration process and close MAX.
You have completed the steps to configure the SC-2350 carrier as an
E/M Series DAQ device accessory.
Note
Configuring the SCC system using MAX automatically sets the E/M Series DAQ
device analog input mode to NRSE.
TEDS
This section describes TEDS.
IEEE P1451.4 specifies two classes of TEDS sensors:
•
Class I—Uses the same two wires for both analog and digital signals
(such as accelerometers and microphones).
•
Class II—Separates analog and digital signals on different wires. In
addition to the analog signal wires, uses two wires for digital signals.
The SC-2350 carrier uses Class II TEDS.
On IEEE P1451.4 TEDS-compatible sensors, the manufacturer places
an EEPROM on the sensor that stores a TEDS. The TEDS includes vendor
and calibration information, sensor constants, and user-defined data.
TEDS-compatible hardware, like the SC-2350 carrier, can read the TEDS
data. Software can use TEDS data to streamline measurement setup.
Advantages and disadvantages to using TEDS-compatible sensors include
the following:
•
Smart, or hardware, TEDS—Provides easier connectivity. You can
plug it in and automatically set up your measurement system.