Benchmarking Data for Simultaneous Data Acquisition Systems

Benchmarking data is very useful when deciding what type of components are needed to meet system requirements. For more complex systems, they may help decide what type of system architecture should be implemented depending on the current and future requirements of the application. This document contains benchmarks of some typical dynamic signal acquisition applications.

PXI-6143

For details on the PXI-6143, refer to the PXI-6143 product page.

Streaming to Disk
This test evaluates how fast a controller can continuously save data to a file.

	PXI-8350
Channels	Max fs
80	250k
88	215k
104	200k
120	180k
136	158k

Test Details:

• Software: LabVIEW 7.1, NI-DAQmx 7.3
• No data display occurred
• Data saved in binary
• Each test ran for a minimum of 1 minute, test at max f_s ran for 5 minutes
• Block size = 2048, buffer size = 1024000

  PXI-6133
  

For details on the PXI-6133, refer to the PXI-6133 product page.
Streaming to Disk
This test evaluates how fast a controller can continuously save data to a file.

	PXI-8350	PXI-8351
Channels	Max fs	Max fs
12	2.5M	2.5M
16	1.8M	2.5M
24	1.15M	1.53M

Test Details:

• Software: LabVIEW 8.0, NI-DAQmx 8.0
• No data display occurred
• Data saved in binary
• Each test ran for a minimum of 3 minute, test at max f_s ran for 5 minutes
• Block size = 16384, buffer size = 5M
• PXI-8351 was configured with 2x160GB RAID-0 and MXI-Express

  PXI-6123
  

For details on the PXI-6123, refer to the PXI-6123 product page.
Streaming to Disk
This test evaluates how fast a controller can continuously save data to a file.

	PXI-8350
Channels	Max fs
48	500k
56	452k
64	370k
80	297k
88	273k
104	214k

Test Details:

• Software: LabVIEW 7.1, NI-DAQmx 7.3
• No data display occurred
• Data saved in binary
• Each test ran for a minimum of 1 minute, test at max f_s ran for 5 minutes
• Block size = 8192, buffer size = 1024000

  PXI-6115
  

For details on the PXI-6115, refer to the PXI-6115 product page.
Streaming to Disk
This test evaluates how fast a controller can continuously save data to a file.

	PXI-8351
Channels	Max fs
4	10M
6	6.67M
8	5M

Test Details:

• Software: LabVIEW 8.0, NI-DAQmx 8.0
• No data display occurred
• Data saved in binary
• Each test ran for a minimum of 1 minute, test at max f_s ran for 5 minutes
• Block size = 16384 -> 32678, buffer size = 5M
• PXI-8351 was configured with 2x160GB RAID-0 and MXI-Express

Reader Comments | Submit a comment »

I think posting the code in this kind of papers would be very helpfull
- Jan 12, 2008

What feature in a PC makes streaming faster.
I imagine one can use any PC with MXI-4 or MXI-express and achieve the same goal. Could you elaborate, What feature in a PC makes streaming faster.
- Feb 17, 2006