<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div data-marker="__QUOTED_TEXT__"><p>Hello,</p><p>The DSG HDice work schedule is attached to this email.</p><p><br></p><p>During the development of synchronization for the external current shunt, a hardware limitation in the lock-in amplifier has been found. <br></p><p>When triggered externally at frequencies ~ >300Hz, the lock-in amplifier's trigger efficiency is less than 100%. <br></p><p>Two lock-in amplifiers were tested and gave the same result.<br></p><p>The trigger efficiency needs to be 100% so the data from the current shunt and the lock-in amplifier are synchronized in time up to max 16.3K buffer depth.</p><p>If a shorter scan time is necessary, the number of data points (DP/sec) will be reduced to achieve 100% trigger efficiency.</p><p>However, when triggering externally, we are not limited to the frequency step size only available with the internal lock-in amplifier's oscillator.</p><p>The external trigger frequency can be set via the CT-Box up to the 100% trigger efficiency limit, which is reached at a frequency of ~ 300Hz.</p><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p><br></div></div></body></html>