GPIB Control Scope VDIV Problem

[uranus]

Hi,

can anyone help me on the issue I met for GPIB control? The romote controlled instrument is LeCroy waverunner LT584M. I programmed the code ibwrt(scope, "C1:VDIV 2V", 10); to try to set scope volt div as 2v/div. however the scope was set as 20V/Div.

whatever what value I pass to scope to set volt div, the scope always converts the value 10 times larger. While when I try TDIV any other setting commands, so such problem happened.

Anyone know why?

Thanks,

CC

[nyc_(is_out_of_here)]

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@uranus wrote:

Hi,

can anyone help me on the issue I met for GPIB control? The romote controlled instrument is LeCroy waverunner LT584M. I programmed the code ibwrt(scope, "C1:VDIV 2V", 10); to try to set scope volt div as 2v/div. however the scope was set as 20V/Div.

whatever what value I pass to scope to set volt div, the scope always converts the value 10 times larger. While when I try TDIV any other setting commands, so such problem happened.

Anyone know why?

Thanks,

CC

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What does the programmer's manual say?

If indeed this is a bug with the instrument's firmware, you need to contact LeCroy directly.

[crossrulz]

It almost sounds like you set the probe to be a 10X.

[JÞB]

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@crossrulz wrote:

It almost sounds like you set the probe to be a 10X.

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It sounds EXACTLY like that.  The V/Div setting on those scopes does not adjust for probe gain.