Keysight_53230A sometimes misses input pulses during TIC
The Keysight 53230A used as Time Interval Counter (TIC) sometimes misses
a signal on the input channel leading to a misalignment of TIC values
with respect to the values measured by the WR software (in mode
abs_cal). Measurements simply get out of synchronization.
The counter can give proper results for many hours without showing this issue but sometimes it seems that the 53230A is in an erratic state and it misses input signals once every 5-10 measurements.