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I have an old Walker Scientific Gaussmeter model MG-3d.
We are trying to get digital output from it for a computer.
Is anyone familiar with the interface and how we could go from the analog? output to digital via USB or other means?
Not certain what voltage is coming off this. There is a picture of the back here
http://www.google.com/imgres?um=1&hl...9,r:0,s:0,i:91
Also, little information / manual online but I did come across a blurb supposedly copied from the physical manual:
Model Number:
MG-3D
Serial Number:
K7570-4
Electrical Requirements:
120 Volts AC, 60 Hz
Condition:
Used, removed from service, guaranteed working with 30 days parts and labor less shipping
General Description:
The MG-3 Gaussmeter is designed to measure magnetic fields from 1.0 gauss to 100 kilogauss at frequencies ranging from DC to 400Hz. The MG-3D has a digital display feature. The unit provides an analog output signal for direct monitoring of the measured field strength. For AC field measurements, the instrument displays the RMS (root-mean-square) value of the magnetic field. The frequency response of the analog output is DC to 400Hz. The RMS field readings cover a range of 10 to 400Hz.
Accuracy of measurement is assured through the use of pre-calibrated probes. These probes are directly interchangeable and do not require calibration. They are calibrated in high accuracy fields standardized by Nuclear Magnetic Resonance techniques which permit traceability to the National Institute for Testing and Standards (NIST). A selection of probes suitable to the field geometry (i.e., transverse, axial, etc.), and the field measurement range are available.
Provisions are made for operating the MG-3 from a 50/60 Hz AC line at a nominal voltage of 115 or 230 Volts AC.
Can anyone make sense of this?
Any help is much appreciated!!
We are trying to get digital output from it for a computer.
Is anyone familiar with the interface and how we could go from the analog? output to digital via USB or other means?
Not certain what voltage is coming off this. There is a picture of the back here
http://www.google.com/imgres?um=1&hl...9,r:0,s:0,i:91
Also, little information / manual online but I did come across a blurb supposedly copied from the physical manual:
Model Number:
MG-3D
Serial Number:
K7570-4
Electrical Requirements:
120 Volts AC, 60 Hz
Condition:
Used, removed from service, guaranteed working with 30 days parts and labor less shipping
General Description:
The MG-3 Gaussmeter is designed to measure magnetic fields from 1.0 gauss to 100 kilogauss at frequencies ranging from DC to 400Hz. The MG-3D has a digital display feature. The unit provides an analog output signal for direct monitoring of the measured field strength. For AC field measurements, the instrument displays the RMS (root-mean-square) value of the magnetic field. The frequency response of the analog output is DC to 400Hz. The RMS field readings cover a range of 10 to 400Hz.
Accuracy of measurement is assured through the use of pre-calibrated probes. These probes are directly interchangeable and do not require calibration. They are calibrated in high accuracy fields standardized by Nuclear Magnetic Resonance techniques which permit traceability to the National Institute for Testing and Standards (NIST). A selection of probes suitable to the field geometry (i.e., transverse, axial, etc.), and the field measurement range are available.
Provisions are made for operating the MG-3 from a 50/60 Hz AC line at a nominal voltage of 115 or 230 Volts AC.
Can anyone make sense of this?
Any help is much appreciated!!