Result changes when using one or more reference frequencies

[ciozi137]

f1 enabled (30 mV):

f2=f1 enabled (20 mV):

[ciozi137]

@Yh-lab I reproduced the issue on my computer. Investigating the source now.

Here is the output of the lockin vs the number of reference channels configured (fN = f1):

N	X	Y	R	Theta
1	1	0	1	0
2	0.5	0.5	0.7	45
3	0.7	0.3	0.7	26
4	0.5	0.5	0.7	45
5	0.6	0.4	0.7	32

I'm thinking the issue is where I convert the in- and out-of-phase signals into X,Y,R,Theta

[ciozi137]

[ciozi137]

Before:

After:

[ciozi137]

NO!

Problem was X and Y were being concatenated in the REF generation.

They need to be interleaved:

[ciozi137]

Test f_50 = f_1: