agilent 4395a impedance analyzer

[cstorey]

For some reason the author of the code wrote an auto-detect sequence for the instrument.  Rather than just hard code GPIB addresses, it goes out and searches for all instruments on the bus that respond to the *IDN?.  Then it tries to match the responses to *IDN? with the string that describes the particular instrument and when it finds a match it saves that instrument address as a global to be used in all other parts of the code.  Cute, but potentially problem causing if the string changes at all due to firmware or say company name changes HP->Agilent->Keysight.

It look like the string its trying to match in the "Address Check.vi" is 4396A, not 4395A.  Try chaning that to 4395A and resaving the VI or it looks like you can specify a string yourself in teh Front panel code as below..

[oli.HUB]

Hi everyone 

Thanks for your helps. 

The dashboard of the “4395A front panel” is partially working, but for some reason some part of the code doesn’t work. And it is always showing me the same error message “internal error wrong memory zone accessed GPIB controller not addressed correctly” I looked online and apparently GPIB is not addressed correctly (see below).

It's strange because a part of the code is working fine so I don’t believe it's the GPIB that is not addresses correctly, but it is more coming from the code itself,

Below I circled the failure button in red and in green the ones which are working properly.

Here are some samples of the code which are failing.

1. Button “single Sweep”

1. Get data

 

the string “aaaa” looks weird to me.

3. (A-B)/R

Have you ever had this kind of problem ?

Thank in advance for your reply.

[cstorey]

Use debugging mode to watch the code execute, while at the same time watching the instrument for errors.  The code has next no error handling so if the instrument throws an error the code after that probably won't run!

Post your results and we can go from there.

[oli.HUB]

Hi 

I used the debugging mode for each button which are not working.

If I press “get data” : When the program comes to the bloc "get data" I have the following error message (see below)

If I press the button "single sweep", When the program comes to the bloc "sweep" I have the following error message (see below)

 

When I press “graph for printing” , there is not error message but for some reason the graph is not displaying the values (see below)

If I press Calibrate, 

when the code comes to the bloc "net cal" It opens an windows, and than I have the following error message when I press one of the button

I hope this is more clear.

[cstorey]

Ok, so 3/4 are the same error. Did you follow the debugging into the Get Data subVI to see what the problem was internally? 

I still think its a GPIB address not being set issue.   But follow the code to the end and use probes on all inputs so you can see what the values are.  Post if that doesn't solve your issues.

Craig

[mmcinnes2021]

Hi I am using the same driver and have my laptop connected to the impedance analyser. NI MAX shows that it's connected. When I open the driver in LABVIEW and run it I get the following:

After I click continue I get:

Not sure what to do to resolve this. Any help would be great thanks.