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Instrument Control (GPIB, Serial, VISA, IVI)

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Agilent E4426, Sin Gen. Initialize.vi failed (unterminated querry)

Hi LV Expert,
Please help. I am writing aplication for Agilent E4426B Sig Generator, and getting error when run initialze.vi, Labview timedout and Instrument displayed Error -420, querry unterminated. Please explain how can I debug this problem. The driver is IVI type. I down loaded it from NI website.

Thanks,

Huy Tran
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Hi Huy,

The Error -420 means the instrument was addressed to talk, but there was no message.

The "initialize.vi" VI has the ID query input defaulted to TRUE. Try setting that to FALSE and see if that works.

Regards,
Salvador Santolucito
Applications Engineering
National Instruments
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You can also try the hpesgd LabVIEW Plug and Play source code driver. Currently, the driver only officially supports the E443x series models but it should also work with the E442x models if you disable the ID Query in the Initialize VI. We are currently working on adding models supported by this driver.

Jason Hobbs
Instrument Drivers
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