Hello,
I have an Agilent 34401A and I want to command it by serial command (to catch voltage).
*IDN?
HEWLETT-PACKARD,34401A,0,11-5-3
With the command 'READ?', I can catch INPUT value.
BUT how can I catch input value of Sense/Ratio Ref? Is there a cmd like 'Read?' to catch this value?
Thank you
The READ? command will returned the measurement value for any measurement that is configured. For DCV:DCV ratio, the configuration is done with the CONF:VOLT:DC:RATIO command. The ratio reference voltage is connected to the Sense terminals as you know. It cannot be measured when using the RATIO function. You would have to change to the DCV measurement function and connect that voltage to the Input terminals of the 34401A and make a DCV measurement. Alternatively, you could do this without moving the leads by doing a DCV measurement of the signal, then changing to the ratio function, send READ? to get the ratio and divide by the signal voltage.
Hello,
Thank you for your answer. I help me a lot!
++
The READ? command will returned the measurement value for any measurement that is configured. For DCV:DCV ratio, the configuration is done with the CONF:VOLT:DC:RATIO command. The ratio reference voltage is connected to the Sense terminals as you know. It cannot be measured when using the RATIO function. You would have to change to the DCV measurement function and connect that voltage to the Input terminals of the 34401A and make a DCV measurement. Alternatively, you could do this without moving the leads by doing a DCV measurement of the signal, then changing to the ratio function, send READ? to get the ratio and divide by the signal voltage.