NI-SPY time resolution

[hershey1]

I am using a GPIB-HS-USB controller connected to usb port of redhat linux PC. 2 Questions

1) Can I use a GPIB analzyer to measure reads

2) if not , how accuraqte is NI-SPY for doing this

[Justin_E]

Hello,

You won't be able to use the GPIB Analyzer with the GPIB-USB-HS, as you need hardware that supports the analyzer to be able to use the software, which the GPIB-USB-HS does not. At this time I think the hardware that supports the analyzer is only available on Windows operating systems.

NI-SPY is able to monitor a GPIB bus in software. The major difference between the GPIB Analyzer and NI-SPY is that NI-SPY can only monitor the bus lines, whereas the GPIB Analyzer can monitor and interact with the bus. If you simply want a way to monitor GPIB communication, then NI-SPY is an excellent tool for doing this. I'm not entirely sure what you mean by the accuracy of NI-SPY, but it will capture every GPIB call when ran.

[hershey1]

I just meant when measuring time of GPIB reads/writes, what is resolution of NI-SPY

[Justin_E]

The time resolution I see when using NI-SPY on my machine is in thousandths of a second (00:00:00.000)