You have to load the Notch correction file into REW once. After that, you can make manual RTA measurements and automated stepped measurements like normal. No special workflow required.Do you mean that the measurements aren't automated WHEN THE NOTCH FILTER IS USED?
You may look at my review/measurements of Topping D50 IIIDoes anyone know how the E1DA APU improves the SINAD that you can measure?
Assuming Amir fed both ADCiso inputs from the same signal source, effectively paralleling them (not sure if the AP has two independent signal generators).There is no unbalancing, it is a result from the used setup for the ADC. With its volume control at max the left output channel is the average of left and right input channel and right output channel is the right input channel.
That's where the 3dB better noise values of the left channel comes from, but actually it's the same as the right channel (give or take a fraction of a dB).
How would that be useful? Almost any other ADC you could connect would be worse.An alternative version with spdif-in would be fantastic...
Their Aliexpress shop no longer sells to Germany because some expensive certification is needed that they will pay for recycling. But in my experience, Sunny (Ivan's wife) replys within 24 h and I have bought directly from them. Linsoul and Hifiexpress had them in stock, too, a few days ago when I last looked.Tried to buy one. Not available. Contacting the developer page eMail address gave no reply. What I saw is that the input impedance is pretty low for some measurements like preamps and specific tube preamps.
From the Dashboard it seems clear that both inputs were fed, with the same signal. The older AP's only have one analog generator but two fully independent output stages, the APx probably similar.Assuming Amir fed both ADCiso inputs from the same signal source, effectively paralleling them (not sure if the AP has two independent signal generators).
Judging by the last sentence, if I understand this correctly, this is the analyzer's DR including the auto scaler?APx555 analyzer attempts to justify its 100 times higher price with this level of performance:
View attachment 365918
Note again that AP's measurement is with 200K Ohm input impedance with automatic maximum input voltage of 160 volts
Available at Audiophonics as well:Their Aliexpress shop no longer sells to Germany because some expensive certification is needed that they will pay for recycling. But in my experience, Sunny (Ivan's wife) replys within 24 h and I have bought directly from them. Linsoul and Hifiexpress had them in stock, too, a few days ago when I last looked.
Thanks, that makes more sense! I wonder if this can be used to make synchronous measurements. One would need a soundcard / pro audio interface that accepts the wordclock signal from the ADC in ordner to not have to depend on the PLL in the interface for synchronization.I assume @Groom most certainly meant SPDIF-Output.
Does anyone know how the E1DA APU improves the SINAD that you can measure?
I must have missed this firmware then, where can I download it?With the latest firmware it provides an SPDIF source signal at an internal pin... you "only" need to make your own little PCB and fit the output circuitry of SPDIF and/or TOSLINK there.
Find attached the latest versions, for standard ADC and for ADCiso.I must have missed this firmware then, where can I download it?
The firmware I updated the last time is one that offers the Masterclock on an internal pin, but it doesn't offer SPDIF signal directly
I will be using RME ADI-2 Pro for this, it can sync on SPDIF input for USB connection, even at mutiples of the sample rate. From there I can connect a DUT on SPDIF out and have the whole shebang in sync.Thanks, that makes more sense! I wonder if this can be used to make synchronous measurements. One would need a soundcard / pro audio interface that accepts the wordclock signal from the ADC in ordner to not have to depend on the PLL in the interface for synchronization.