101 lines
1.8 KiB
Org Mode
101 lines
1.8 KiB
Org Mode
#+TITLE: Measurements
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* Measurement of the slip-ring noise when turning
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Voltage amplifier:
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- 60db
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- AC
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- 1kHz
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Additionnal LPF at 1kHz
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- meas30: All off
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- meas31: Slip-ring on
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- meas32: slip-ring 6rpm
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- meas33: slip-ring 60rpm
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Channel 1: direct
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Channel 2: slip-ring
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* Measuremeent of the noise of the slip-ring when turned ON using geophones
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Voltage amplifier:
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- 60db
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- AC
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- 1kHz
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Additionnal LPF at 1kHz
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- meas35: All off
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- meas36: slip-ring ON
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geophone at the sample location
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slit into 2 BNC:
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- first one (column one): direct wire
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- second one (second column): slip-ring wire
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Each of the signal is amplified by voltage amplifier:
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- 60db
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- AC
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- 1kHz
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Additionnal LPF is added before the voltage amplifiers
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* Measure of the ground and marble velocity
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One geophone is located on the marble, the other one on the floor.
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col1: floor
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col2: marble
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Each of the signal is amplified by voltage amplifier:
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- 60db
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- AC
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- 1kHz
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- meas 37: Z direction
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- meas 38: N direction
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- meas 39: E direction
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* Measure of the vibration when rotating the Slip-ring and Ty
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All the stages are OFF except Ty and Slip-Ring.
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Each of the signal is amplified by voltage amplifier:
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- 40db!!!
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- AC
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- 1kHz
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col1: marble
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col2: sample
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Rotating the slip-ring at 60rpm and scans with the Ty at 1Hz.
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Everything on the Z direction
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- meas 50: Rz at 1Hz, Ty OFF
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- meas 51: Rz at 1Hz, Ty ON (The current and cnt error of Ty is also registered)
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- meas 52: Rz at 1Hz, Ty 1Hz 600000cnt
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* Measure of the vibration induced by Ty motion
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One geophone at the sample position
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One geophone on the marble
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Each of the signal is amplified by voltage amplifier:
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- 40db!!!
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- AC
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- 1kHz
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col1: marble
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col2: sample
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Ty Scans:
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- sin @ 1Hz with amplitude = 600 000 cnt (= 3mm)
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- meas 40: Z direction
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- meas 41: E direction
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- meas 42: E direction without any motion (Ty OFF)
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