Hi, people.
I'm a physics student, and currently I'm measuring some stuff in the lab, and I have hit a wall, and would kindly ask for help. So, my problem is as follows: I am using a certain measurement device (Agilent RLC meter, not sure about the exact model; it measures R and X components of the complex impedance [or |Z|-θ, whatever]) to measure the electrical properties of certain samples. However, there is a cryostat between the sample and the measurement device, and it's influence on the signal can't be neglected. I am attaching a crude 'schematic' of my measurement system.
So, I need to find a way to get the cryostat out of my measurements. It's impedance is too complex to approximate with some replacement circuit. I am not at all interested in it's properties or internal structure. What I have is a few sets of complex impedance measurements where the DUT is a known resistor, in [20Hz, 30kHz] range.
What I need now is a way to process the data raw data I get off my measurement device, in order to remove the 'black box' in the middle. I believe the best way to do it is to construct a transfer function of the box, but I don't know how to do it from the measurements I have. Any help would be appreciated.
Thanks in advance to everyone.
P.S. please forgive my limited drawing skills.
I'm a physics student, and currently I'm measuring some stuff in the lab, and I have hit a wall, and would kindly ask for help. So, my problem is as follows: I am using a certain measurement device (Agilent RLC meter, not sure about the exact model; it measures R and X components of the complex impedance [or |Z|-θ, whatever]) to measure the electrical properties of certain samples. However, there is a cryostat between the sample and the measurement device, and it's influence on the signal can't be neglected. I am attaching a crude 'schematic' of my measurement system.
So, I need to find a way to get the cryostat out of my measurements. It's impedance is too complex to approximate with some replacement circuit. I am not at all interested in it's properties or internal structure. What I have is a few sets of complex impedance measurements where the DUT is a known resistor, in [20Hz, 30kHz] range.
What I need now is a way to process the data raw data I get off my measurement device, in order to remove the 'black box' in the middle. I believe the best way to do it is to construct a transfer function of the box, but I don't know how to do it from the measurements I have. Any help would be appreciated.
Thanks in advance to everyone.
P.S. please forgive my limited drawing skills.
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