The Rovelight / Jinbei HD600 does not pulse to (briefly) emulate continuous light. It relies on the long burn and early trigger, as mentioned above. The Strobe needs to be set to its 'H' setting and a suitable trigger needs to be extracting the early signal usually associated with HSS.
Jinbei have tweaked things slightly to reduce but not eliminate the gradation associated with 'Long burn' techniques, as mentioned with examples & a duration plot in other threads:
eg:
https://photography-on-the.net …/showthread.php?t=1441160



