Differences

This shows you the differences between two versions of the page.

--- fmkpfm [2025/02/25 10:43] – pklapetek
+++ fmkpfm [2025/02/25 10:43] (current) – pklapetek
@@ Line 11: / Line 11: @@
 {{ :fmkpfm_sweep2.png?direct&400 |}}
-Goal is to use signal that is steepest in its response when changing DC bias, here L2y (cosine). This can be mnow chosen in the KPFM tab in the main Gwyscope window and regime can be switched to "FM KPFM" to switch on the KPFM feedback. In contrast to [[amkpfm|AM KPFM]], here we don't bother with any lifts and KPFM feedback is run all the time.
+Goal is to use signal that is steepest in its response when changing DC bias, here L2y (cosine). This can be mnow chosen in the KPFM tab in the main Gwyscope window and regime can be switched to "FM KPFM" to switch on the KPFM feedback. In contrast to [[amkpfm|AM KPFM]], here we don't bother with any lifts and KPFM feedback is run all the time. Note that the lock-in 2 low pass filter value has to be set to value that is lower than the KPFM frequency, as seen below:
 {{ :fmkpfm_run2.png?direct&600 |}}