Products > Test Equipment
HP 34401A 3457A 3456A 3478A Standalone Software
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todorp:
Hi, I tried to run the latest binary available in git on win 7 pro 32 bit. I am connected to the HP34401A using an USB serial dongle. The serial comm settings on the instrument are: baud - 9600, parity - none, stop bits - 2, flow control - hardware. With this settings when I try to send the *IDN? command the program hangs and I have to kill it from task manager. If I push the 'Connect' button the program crashes. If I leave all the default serial port settings and push connect the program seems happy and closes the settings window. However if then I start a measurement the program crashes.
Anyone had similar issues with the serial comm connectivity? The hardware usb serial dongle works because I am able to connect to the instrument using BenchVue and TestController.

Thanks a lot,
    Tod
Nx-1997:
The correct serial settings on the instrument should be 9600 Baud, None: 8 Bits, SCPI. Navigate to the I/O menu and set these settings and see if that works.
todorp:

--- Quote from: Nx-1997 on July 06, 2021, 06:40:44 am ---The correct serial settings on the instrument should be 9600 Baud, None: 8 Bits, SCPI. Navigate to the I/O menu and set these settings and see if that works.

--- End quote ---

Yes, that is exactly what I have - the only difference is stop bits = 2. Using a serial console I also determined that I have to set the flow control to 'hardware' in order to be able to connect to the meter...

I will download the code from git and try to debug to see what is going on. Thanks a lot for the software and the help :-).
beanflying:

--- Quote from: Nx-1997 on July 06, 2021, 06:40:44 am ---The correct serial settings on the instrument should be 9600 Baud, None: 8 Bits, SCPI. Navigate to the I/O menu and set these settings and see if that works.

--- End quote ---

Not sure what the 'correct' settings are but mine is working fine on Even parity, 7 bits at 9600. Those settings are what worked on the Agilent freebie thread linked earlier and this software worked so I stuck with them.
todorp:
@beanflying could you post your values for the other fields in the Rs232 Settings, like hardware control, etc.
Thanks a lot
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