Reports 1-1 of 1 Clear search Modify search
VIS (PR2)
fabian.arellano - 10:43 Thursday 23 May 2019 (8952) Print this report
LVDT driver settings, part 1.

With Fujii-kun.

There are similar entries for SRM, SR2 and BS, which I write here for reference: 7215, 8941 and 8951.

  • Input signal: 5.63 Vpk-pk at 10 kHz.
  • Nominally, the external signal generator is set to 6 Vpk-pk at 10 kHz. Note this amplitude is different from SRs and BS and other PRs.
  • The input gain is the amplitude measured at the probe point (P0, P1, P2) divided by the amplitude of the reference signal (measured at probe point REF_SIG at the central board).
  • Phase measurements were recorded in photos which are uploaded to NAOJ's Google Photos on 23-05-2019.
  • A picture of the notebook can be found here.
  • This information should also be found in the PR2 information page.
LVDT Input gain Output gain resistance (Ohm) Phase (µs) Board and probe point
BF 0.971 38.8 0 left board, P0
SF 0.971 38.4 8, signal at probe point ahead. left, P1
BF V1 0.964 26.0 40, signal at probe point ahead. right, P0
BF V2 0.964 25.5 38, signal at probe point ahead. right, P1
BF V3 0.964 29.2 40, signal at probe point ahead. right, P2
  • In the pictures of the oscilloscope screen, channel 1 is the reference signal and it's shown in yellow.
  • Channel 2 is the LVDT signal (e.g. BF, SF, etc.) shown in green.
  • The X2 cursor measures the position (in time) of the peak of the LVDT signal in channel 2.
  • The X1 cursor measures the position (in time) of the peak of the reference signal in channel 1.

There is still another LVDT driver box whose settitngs haver to be measured.

Search Help
×

Warning

×