PXI-6509 Benchmarks with NI-DAQmx
Primary Software: LabVIEW Development Systems>>Professional Development System
Primary Software Version: 8.0
Primary Software Fixed Version: N/A
Secondary Software: N/A
Hardware: Digital I/O (DIO)>>Static>>PXI-6509
Problem: What are the benchmarks for the PXI-6509?
Solution: The data transfer rates of the NI 6509 are software timed, also called unstrobed or nonlatched, and do not require status and control signals so the transfer speed are completely software/computer dependant. These rates may vary due to programming language and code efficiency, CPU utilization, transfer methods, and so on.
Below are the results of benchmark testing for the PXI-6509 based on 10,000 updates. All tests were executed without software delays or data verification; generated values were toggled each iteration. Attached are the VI's used to obtain these results.
| Hardware Setup |
| Device Type |
Model |
Kit Part Number |
Assembly Part Number |
| PXI Chassis |
PXI-1006 |
778303-01 |
745751-01 |
| Digital I/O Device |
PXI-6509 |
778858-01 |
190246A-01 |
| MXI-4 Kit, Copper Cabling |
PXI-PCI8331
PXI-8331
PCI-8331
MXI-4, 3m Copper Cable |
778640-03
778955-01
778956-01
190957-03 |
186897B-01
1886943B-01
1324640-4 |
| Computer Specifications |
|
Computer 1 |
Computer 2 |
| Operating System |
Windows XP Professional
Service Pack 2 |
Window XP Professional
Service Pack 2 |
| Model |
DELL OptiPlex GX280 |
DELL OptiPlex GX150 |
| Processor Speed |
3.2 GHz |
1 GHz |
| RAM |
1 GB |
256 MB |
| Bus Chipset |
Intel 915G Express Chipset
800 MHz Front Side Bus |
Intel 815E Chipset
133 MHz Front Side Bus |
| HD Access Rate |
ATA 100
7200 RPM |
ATA 100
7200 RPM |
| LabVIEW Version |
8.0 Released |
8.0 Released |
| Acquire 1 Channel |
| Measurement |
Results Computer 1 |
Results Computer 2 |
| Total Time Elapsed |
119.7 ms |
195.7 ms |
| Average Update Rate |
85147 Hz |
51100 Hz |
| Average Update Interval |
12.0 µs |
19.6 µs |
| Acquire 1 Port (8 Channels) |
| Measurement |
Results Computer 1 |
Results Computer 2 |
| Total Time Elapsed |
124.6 ms |
217.6 ms |
| Average Update Rate |
80259 Hz |
45957 Hz |
| Average Update Interval |
12.5 µs |
21.8 µs |
| Acquire All Channels (96 Channels) |
| Measurement |
Results Computer 1 |
Results Computer 2 |
| Total Time Elapsed |
526.3 ms |
739 ms |
| Average Update Rate |
19000 Hz |
13534 Hz |
| Average Update Interval |
52.6 µs |
73.9 µs |
| Update 1 Channel |
| Measurement |
Results Computer 1 |
Results Computer 2 |
| Total Time Elapsed |
90.9 ms |
180.3 ms |
| Average Update Rate |
110028 Hz |
55464 Hz |
| Average Update Interval |
9.09 µs |
18.0 µs |
| Update 1 Port (8 Channels) |
| Measurement |
Results Computer 1 |
Results Computer 2 |
| Total Time Elapsed |
86.9 ms |
176.5 ms |
| Average Update Rate |
115080 Hz |
56694 Hz |
| Average Update Interval |
8.70 µs |
17.7 µs |
| Update All Channels (96 Channels) |
| Measurement |
Results Computer 1 |
Results Computer 2 |
| Total Time Elapsed |
208 ms |
421.2 ms |
| Average Update Rate |
48838 Hz |
23742 Hz |
| Average Update Interval |
20.8 µs |
42.1 µs |
Related Links: Products and Services: PXI-6509Product Manuals: NI 6509 User Guide and Specifications Developer Zone Tutorial: Complete Industrial Digital I/O and Counter/Timer Tutorial KnowledgeBase 3EQEQOLE: Transfer Rates for 650x Devices
Attachments: 
Report Date: 11/07/2005
Last Updated: 08/04/2007
Document ID: 3R6J4RX6
