Hi Stefan, all,
In the past I used the ADuM1100 to isolate some
instruments on a sailing boat.
And I was surprised that the GPS receiver losed the
satellites...
Examining with a spectrum analyzer I saw
spurious from abt 600 MHz to more than 2 GHz spaced abt 3 MHz...
It was the ADuM causing the QRM at 5 meters up
to the GPS antenna !
Now perhaps the defect is fixed with the new
references...
As a precaution verify the WiFi link (and GPS if
present) when the ADuM works... :)
73, Jean / F6HCC
----- Original Message -----
Sent: Friday, September 19, 2014 3:40
PM
Subject: LF: Breaking ground loops in
PC-sound cards
Hi all,
We all know the problems with QRM on the
VLF/LF/MF devices in combination with computers. Sometimes even with good
grounding, adding loads of common mode chokes, some QRM remains.
At work i
just jumped over that device: ADuM4160
I
can very well imagine there are many of you (as well as me) who would benefit
at least a bit when using that device.
Worth to play with?
73,
Stefan/DK7FC
PS: Maybe be used in combination with an ADuM5000
as shown in this image: http://www.dajac.com/blog/wp-content/uploads/2009/07/adi_usb_isolator_4160_circuit.png
if that doesn't add QRM again...
