Spectrum scale seems to show 2x f

[grendell]

I have just started using the 2206 and upgraded to the latest software.

I was using the spectrum mode to check a phone line dial tone. The two frequencies detected were twice what I expected.

As a test I set the generator to 1KHz and the sweep to 5Khz and fed it to CHA. Again the scale showed a 2KHz main peak (and slight peak at 4KHz).

Changing to scope mode showed the frequency was indeed 1KHz as expected.

What am I doing wrong ?

G

[Martyn]

This has been fixed in the R6.6.28(RC) version which you can download from the usual links