Increase acquiring rate of Agilent 34401A multimeter

[yuriscoelho]

Hello, 

I'm using Agilent 34401A to measure DC voltage from a Hall Sensor through GPIB connection. It reads 3 points per second, approximately. I need to increase this number.

Can anyone help me? I've already tried but no sucess.

[njacacia]

I am not sure where you are getting 3 points per second.

It looks to me you are reading as fast as your WHILE loop allows.

[yuriscoelho]

Ps: I achieved a better acquiring rate by using agilent driver instead of Visa. I have configurated to the lowest resolution (4.5) and turned Autozero OFF so it takes a measure each 252 ms approximately. I need even more speed in acquisition.

Can someone help me?

Thanks

[Albert.Geven]

I did not look at your code, but do you use auto ranging?

Most often that is a reason for slow measurements.

[yuriscoelho]

Is there any way to increase the while loop speed?

[yuriscoelho]

I have already tried turning autorage OFF but the measure takes a constante value. I don't know why. However, I noticed that speed acquisition increased to 80ms. But my DC voltage values are now constants.

Ps: I found this on the manual: "If the input signal is greater than the present range can measure, the multimeter gives an overload indication: “OVLD” from the front panel or “9.90000000E+37” from the remote interface." That's exactly what's is happening.

How could I solve this problem?

[yuriscoelho · Accepted solution]

I have turned Autorange to OFF and used manual range. Now I am taking measures each 80ms!!

Problem solved.

Thank you all