Version 8 firmware

Analysing R37_* data files (see https://elog.ph.ed.ac.uk/AIDA/160)

Usinmg MIDASsort, I generate a spectrum showing the time difference (10ns clock cycles)
between sequential ADC data items. There is an offset of 1000.

I observe peaks at 1000, 1200, 1400 etc - as expected

I also observe peaks at +/-10 clock cycles relative to these main peaks - not expected

I also observe some discrete intermediate peaks - not expected