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== Meeting note with Zsuzsa ==

=== Suggestions (random order) ===
 * You may not want more IRIG-B boards because there is Dsub output on the back of IRIG-B board with which we can convert to BNC to use more outputs.
 * It's better to connect two GPS antennas to Master board so that one can be used when the other signal is lost.
 * In the master board, VCXO is not available in the market anymore. However Szusza has spares.
 * In the comparator board, there is one chip which gets very hot. Make sure to cool it down.
 * Check if the leap second is correctly compensated in the oldest IRIG-B (one arrived on 5/7/2012, installed in the front room). iKAGRA timing might have been off 1 sec!


KAGRA Timing System


Meeting note with Zsuzsa

Suggestions (random order)

  • You may not want more IRIG-B boards because there is Dsub output on the back of IRIG-B board with which we can convert to BNC to use more outputs.
  • It's better to connect two GPS antennas to Master board so that one can be used when the other signal is lost.
  • In the master board, VCXO is not available in the market anymore. However Szusza has spares.
  • In the comparator board, there is one chip which gets very hot. Make sure to cool it down.
  • Check if the leap second is correctly compensated in the oldest IRIG-B (one arrived on 5/7/2012, installed in the front room). iKAGRA timing might have been off 1 sec!

Reference

LIGO Documents

KAGRA/Subgroups/DGS/Projects/Timing (last edited 2021-08-11 18:12:00 by shoichi.oshino)