AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
  AIDA  ELOG logo
Message ID: 798     Entry time: Mon May 13 10:13:26 2019
Author: TD 
Subject: AIDA with 25MHz external clock does not work ... ! 
OH setup AIDA external clock using  Tektronix AFG3102 - settings as follows

CH1 ON - amplitude +5V, phase 0n deg, offset 0V, frequency 50.000000MHz

JA setup DTAS/BigRIPS clock using Tektronix AFG3102 - settings as follows

CH2 ON - amplitude -0.8V, phase 0n deg, offset 0V, frequency 25.000000MHz

Unfortunately the AGF3102 was set to CH1 frequency = CH2 frequency and this changed the AIDA external
clock frequency from 50MHz to 25MHz.

This stopped the DAQ. Interestingly it was possible to Resync successfully and *all* system wide
checks were OK *except* Check Clock Status which produced errors - see attachment 1.

CH1 & CH2 now set to 50MHz and 25MHz respectively.

AIDA DAQ now running OK.
Attachment 1: 2.png  198 kB  Uploaded Mon May 13 11:18:31 2019  | Hide | Hide all
2.png
ELOG V3.1.4-unknown