Error: VISA Timeout expired before operation completed

[Yuchen]

Hi,

I am using Labview to communicate with my electrometer (Keithley 6514). Now I simply connected them by RS232 DB9 - USB cable. When I was running the example file found in NI for this electrometer, I always got the error: 

Error -1073807339 occurred at VISA Read in Keithley 6517.lvlib:Initialize.vi->Keithley 6517 Acquire Measurement.vi

Possible reason(s):

VISA: (Hex 0xBFFF0015) Timeout expired before operation completed.

What I did: 

1) change the timeout value: 2000ms to 10000ms, not working

2) check the settings of my electrometer, seemed to work fine, RS232 communication ON

3) check the port setting, all looks fine, serial configuration in NI matches with the driver. Selected the right port & model.

4) eletrometer, definitely works fine in displaying and measuring.

Any suggestions?

Thanks

[crossrulz]

This is where I normally pull out Putty and make sure the instrument takes the commands properly. My guess is that some UART setting is not correct, most likely the baud rate.