reading fast ke 2000

[mysimba]

Hello everybody,

I'm using a keithley 2000 to read a frequency, the problem I'm facing is I must put a wait of 2500 ms to become the right measurement.

I use the subVi read single to read the measurement.

Is there a simple method to read the frequency measurement from my ke2000?

I only need a initialize, read frequency and then close.

Please help me

I attached the subVi's for ke 2000

[Dennis_Knutson]

The ke2000 drivers that I downloaded have a configure system function that can turn autozero off and and configure hold function that will turn this off as well. These will speed up the measurement at the expense of accuracy. You also want to check to see how you set up the triggering. The Read Single Sample example in the driver from NI has bus triggering. You can quicly modify this example to read frequency. Do that and see how long it takes to do a measurment. Attaching the code that you've written would help. The ke2000 Data Read Single also enables SRQ and then does a wait for SRQ. If the instrument is working properly, you shouldn't need to add any additional waits after triggering the instrument.

[mysimba]

Thanks for your answer, but I don't understand what you mean.

You said you have downloaded drivers for ke2000 that turns fast. could you please attach me a solution on how taking mesurement of frequency fastly?

Best regards,

[Dennis_Knutson]

What I mean is that the llb you attached does not have all of the functions that are in the llb I downloaded from NI. Get the driver from https://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=E3B19B3E90B0659CE034080020E74... and look at the functions I mentioned. The top-level example I mentioned (ke2000 Read Single Example) can be modified to take a frequency measurement in about 1 minute. It should look like this. Report back with how long this takes to return a measurement.

Message Edited by Dennis Knutson on 12-05-2006 12:08 PM