HP 34401A Multimeter Interface
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SuiHerger
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SuiHerger Posted messages 8 Registration date Status Member Last intervention -
Hello,
I am communicating with an HP34401A multimeter via an RS232 connection. I have a Python script that allows me to send commands and receive responses. Everything works quite well.
My problem is that when I use the multimeter in this remote mode, its display is frozen. It remains stuck on the value of the previous acquisition commanded by Python. However, I would like the display to be "free." Indeed, I need to adjust a voltage source and I want to see the voltage "changing" live on the multimeter before launching an acquisition through Python.
In short, I am looking for the command or commands to configure the multimeter in a mode that does not freeze the display. This must be related to some sort of trigger...
If it helps, here are the commands I send during initialization:
*RST
*CLS
SYST:REM
CURR:NPLC 10
I hope I am in the right forum...
Thank you in advance for your responses and have a good day.
Configuration: Windows 7 / Chrome 35.0.1916.114
I am communicating with an HP34401A multimeter via an RS232 connection. I have a Python script that allows me to send commands and receive responses. Everything works quite well.
My problem is that when I use the multimeter in this remote mode, its display is frozen. It remains stuck on the value of the previous acquisition commanded by Python. However, I would like the display to be "free." Indeed, I need to adjust a voltage source and I want to see the voltage "changing" live on the multimeter before launching an acquisition through Python.
In short, I am looking for the command or commands to configure the multimeter in a mode that does not freeze the display. This must be related to some sort of trigger...
If it helps, here are the commands I send during initialization:
*RST
*CLS
SYST:REM
CURR:NPLC 10
I hope I am in the right forum...
Thank you in advance for your responses and have a good day.
Configuration: Windows 7 / Chrome 35.0.1916.114
1 answer
-
Hi everyone,
I found the solution. In fact, it's very simple.
When initializing the device, I send the command SYS:REM. This means REMote (remote-controlled). All I have to do is send the counterpart of this command, which is SYS:LOC, meaning LOCal.
From that moment on, the multimeter displays the value. This allows me to adjust my power supplies before making a measurement, and it's really cool...
Well, I see that the question didn't interest many people, but at least it's resolved!
See you soon!