Hi all,
With my DAC + Amp layout the way it is, i could not mount the optical spdif TORX recievers on the DAC PCBs.
So the TORX recievers (there are 3) are mounted on the chassis with 3 wires braided for each running to the DAC PCBs.
The length of the longest wire from TORX to the PCB is ~20cm.
The two recievers with the shorter length wires, work perfectly all the time.
The one with the 20cm long run has problems syncing 🙁
Is there anything i can do it fix this problem (besides making the recievers closer)?
Thanks.
With my DAC + Amp layout the way it is, i could not mount the optical spdif TORX recievers on the DAC PCBs.
So the TORX recievers (there are 3) are mounted on the chassis with 3 wires braided for each running to the DAC PCBs.
The length of the longest wire from TORX to the PCB is ~20cm.
The two recievers with the shorter length wires, work perfectly all the time.
The one with the 20cm long run has problems syncing 🙁
Is there anything i can do it fix this problem (besides making the recievers closer)?
Thanks.
I think we need more info to give any usable advice,
What kind of cables are you using between the torx and the dac board and how have you connected the cable ie grounding, additional resistors, caps ...etc?
A schematic would also help.
/Michael
What kind of cables are you using between the torx and the dac board and how have you connected the cable ie grounding, additional resistors, caps ...etc?
A schematic would also help.
/Michael
The inductance of the wires is probably causing problems.
Add a bypass cap across the power supply pins of the TORX receivers. I'd try around 10 uF, but you can also try bypassing that with a smaller ceramic like 0.1 uF. Also consider adding a small (10 Ohm or so) resistor in series with the +5 V supply just before the TORX (before the capacitor). This will help reduce high frequency garbage in the power supply for the TORX.
Add a bypass cap across the power supply pins of the TORX receivers. I'd try around 10 uF, but you can also try bypassing that with a smaller ceramic like 0.1 uF. Also consider adding a small (10 Ohm or so) resistor in series with the +5 V supply just before the TORX (before the capacitor). This will help reduce high frequency garbage in the power supply for the TORX.
If you have proper decoupling, as macboy has outlined, it should work fine.
TORX are susceptible to induced interference, but I have never encountered a problem with this in practice.
TORX are susceptible to induced interference, but I have never encountered a problem with this in practice.
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