DAC alive

[Gordon McGregor]

RE: RMAA

I disagree. First of all RMAA is more flexible because we have the open source codes for measures, so you can do whatever you want with the programming.
Second - they use 1 kHz tone in the measurements of THD, then you can adjust the level - if you want it different then -3dB below FS, and get the FFT spectrum. Well, there is nothing to argue about, everyone prefer what he likes more.

 

[till]

a) off topic
b) before you do statements like that, please try spectralab.
c) i would be happy with open source that gives me same versatility like spectralab, but did not find until now

 

[Bricolo]

I remember that a member here wrote about a linux spectrum analyser
maybe you'll find some sources this way

 

[Gordon McGregor]

a) off topic
b) before you do statements like that, please try spectralab.
c) i would be happy with open source that gives me same versatility like spectralab, but did not find until now

a) sorry about that
b) I did, as well as WinMLS and EFT5.
c) you've found it - http://forum.rightmark.org/topic.cgi?id=4:480

 

[Gordon McGregor]

RE: measures

I forget to add - here is the test description:
http://audio.rightmark.org/downloads/tests.pdf
and here - are the sources for the measurements:
http://audio.rightmark.org/downloads/tests.dll.4.0.zip

 

[till]

I want to try another section between the reciver and the DACs digital input. I want follow Jim W.s suggestion and use a isolational amp. Also i want get rid of the 74xxx chip.

would this work, or is a single ended inverter with higher ouput impedance ok here?

 

[till]

next board for the DAC in progress

 

[Bernhard]

Doesn't iso amp have very small bandwith ???

 

[till]

check the datasheet

DATA RATE: 80M Baud, typ