Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz - Page 334 - diyAudio
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Old 17th August 2015, 09:21 PM   #3331
ylingf is offline ylingf  United States
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Join Date: Jun 2004
Location: New Jersey, US
Not sure what I did wrong. Reinstalled latest firmware and filters multiple times, but could not change filter.

F4


dam1021 uManager Rev 0.99 20150814 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS

# exit

F5


dam1021 uManager Rev 0.99 20150814 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS

# exit

F6


dam1021 uManager Rev 0.99 20150814 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS

# exit

F7


dam1021 uManager Rev 0.99 20150814 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS
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Old 17th August 2015, 09:24 PM   #3332
soekris is offline soekris  Denmark
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Join Date: Jun 2009
Is the dam1021 locked to something ? Don't remember, but it might need signal....
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Old 17th August 2015, 09:28 PM   #3333
ylingf is offline ylingf  United States
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Join Date: Jun 2004
Location: New Jersey, US
same problems with both 8/14/2015 and 8/17/2015 firmware:

# update
uManager Firmware Update, are you sure ? Updated, resetting.

R0.99
I3
F5
V+00
I3
I0
L352


dam1021 uManager Rev 0.99 20150817 FPGA Rev 0.99 Press ? for help.

# exit

F4


dam1021 uManager Rev 0.99 20150817 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS

# exit

F5


dam1021 uManager Rev 0.99 20150817 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS

# exit

F6


dam1021 uManager Rev 0.99 20150817 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS

# exit

F7


dam1021 uManager Rev 0.99 20150817 FPGA Rev 0.99 Press ? for help.

# filters

04 Bypass FIR1, 352.8 Ksps
08 Linear Phase FIR2, 352.8 Ksps, 0-83 Khz -1 db, 209 Khz -100 db
29 DC Blocking IIR, 352.8 Ksps, 2 Hz HP 1st order
30 Deemphasis IIR, 352.8 Ksps, 50/15 uS
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Old 17th August 2015, 09:36 PM   #3334
zfe is offline zfe
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Join Date: Dec 2014
At least in the .txt file there are only differnt filters for 44.1 and 48 kHz. For the higher rates there is only the 04 filter. You are running the DAM with 352.8

Last edited by zfe; 17th August 2015 at 09:38 PM.
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Old 17th August 2015, 09:39 PM   #3335
ylingf is offline ylingf  United States
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Join Date: Jun 2004
Location: New Jersey, US
Never mind. Figured out. I am oversampling in JRiver to 352.8 that caused FIR1 to be bypassed. You are correct ZFE. Thanks,

Last edited by ylingf; 17th August 2015 at 09:47 PM.
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Old 17th August 2015, 09:55 PM   #3336
leehan is offline leehan  United Kingdom
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Join Date: Jun 2010
Location: Kent, UK
normundss & Soren, THANK YOU guys! Locking and sample rate change clicks are gone!
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Old 17th August 2015, 10:41 PM   #3337
Priidik is offline Priidik  Estonia
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Join Date: Nov 2014
Location: Estonia
Can someone share the link for latest firmware?
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Old 18th August 2015, 03:01 AM   #3338
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Join Date: Feb 2015
Quote:
Originally Posted by spikestabber View Post
Has anyone seen anything like this before?

If both the SPDIF Toslink and Coaxial interfaces are providing a signal at the same time, while the Coaxial input is used there is an occasional noise/distortion in a periodic pattern. If the Toslink input is selected there are no issues, it happens only on the Coaxial input while there is a Toslink signal present. Disabling the Toslink source makes the issue go away. Its almost as if its taking SPDIF clock from the Toslink interface for Coaxial.

My setup is an X-Fi sound card connected via Toslink (all PC audio except music, resamples everything to 96khz with hardware mixing), Beis AD24QS on Coaxial for vinyl and USB for music with Audacious having exclusive access to the Amanero.
This problem no longer exists in the latest releases, fyi.
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Old 18th August 2015, 04:58 AM   #3339
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Join Date: Feb 2010
Location: Hong Kong
After firmware v0.99 is installed, can I connect serial signal to J3 "ISO RXD IN", "ISO TXD OUT" and "ISO GND"? (with ISO +3.3V power supply)

What if I connect to both J10 and J3 for serial connection? would it be response to the two terminals?
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Old 18th August 2015, 06:41 AM   #3340
Dimdim is online now Dimdim  Greece
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Join Date: Sep 2008
Location: Athens
Yes, the isolated serial port will work just fine with the connection that you mention. I tested it last night.

If you connect both serial ports, whatever you input (or output) to either serial port gets mirrored onto the other one. It is very convenient, especially if you are troubleshooting a microcontroller sending commands to one of the ports.
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