10.8 Setting up National Instrument Multifunction Data Acquisition devices
(NI-DAQ) to capture energy data
In addition to the Energy Probe, you can also use NI-DAQ devices to gather energy data from your target and view the results in Streamline.
To collect power statistics using a NI-DAQ device, you must have the
- NI-DAQmx software installed on your host machine. This software package
includes drivers for the NI-DAQ device.
If you are running on Linux, you must use the NI-DAQmx Base software.
Currently, Red Hat Linux is the only type of Linux that the
NI-DAQ device is supported on. Also, caiman must be built from source with Linux. Edit
CMakeLists.txt and set
0, and verify the NI-DAQ install paths within
README.md located in
All necessary software is available on the National Instruments
To set up your NI-DAQ device, follow these steps:
Connect the Ai1 connections on the NI-DAQ device to go across the shunt
resistor on your target.
Connect Ai0 negative to ground.
Also connect Ai GND to ground.
Loop Ai0 positive to Ai1 negative.
The Ai0 connectors are measured across the load, which is used to derive
Figure 10-6 Connections for NI USB-621x
Repeat steps 1 through 3 using the other connectors on the NI-DAQ device to
measure additional channels.
In the Streamline Data view, click
Capture & Analysis Options.
Select the NI-DAQ option from the
Energy Capture drop-down menu.
Enter a valid system name in the Device field.
To get the system name of your National Instruments device, you must run
the NI-DAQmx Base List Devices application, installed as
part of the NI-DAQmx software package.
Click the Select the energy capture
tool button in the Tool
Locate caiman in your DS-5
installation directory and select it.