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I am using single SPDIF converter. I would like be able to switch between that and I2S from a teleporter. Would I use Sidecar or Otto-II for that?
In my testing I noticed that I2s volume level is much lower than SPDIF. I an guessing thats because there are no jumpers on JPCM1, JPCM2, and JPCM3. How is that handled when switching between the two kinds of signals?
Thanks, Mike
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That is what sidecar does. :) Just wire to only one SPDIF input.
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OK, I wil order the sidecar. Thanks for your reply
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OK, I got the Sidecar and installed it using the 2 pole switch method outlined in Leon's guide. SDPIF works but when PCM is switched in there is lock but no sound, the LED's get dim and voltage goes from 5.25 to 4.6 volts. Could I have installed the relays wrong. I installed them with the writing up when looking at the PCB with the writing up. I am using the Sidecar with the single SPDIF input board. What am I doing wrong? If I disconnect power to the Teleporter voltage only goes down to 5 volts when PCM is switched in. Is this normal? Edited by user Monday, December 24, 2012 1:21:29 AM(UTC)
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Relays should be installed as you said.  What are you using to power the Sidecar and what else does it feed? If you are not shorting out anywhere, it sounds like a power problem; not enough to cover additional load. The Teleporter pulls ~ 150mA, the Sidecar ~65mA. Your data shows you get less voltage drop with the Teleporter disconnected. Edited by user Monday, December 24, 2012 1:57:53 AM(UTC)
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Thanks for the picture.
I am using the Placid HD supply to power one BIII, the teleporter, Sidecar, and single spdif converter. Checking the current usage that adds up to 665mA. Maybe I could increase the current delivery of the Placid. Do you think I should get another power supply?
Thanks, Mike
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You're most welcome Mike. I am fairly sure the Placid HD can handle well over 800mA without adding noise in the supplied power. You would have to shunt enough to cover all loads possible plus the 50mA headroom amount, so the limit could/would be the temp of the shunting transistor. TP says 80C tops or reduce load/use better cooling (larger sinks, fan, etc). So I'm thinking temp could be an issue for you which might make another power supply a desirable option. I use an LCDPS to power my Sidecar, 4 channel SPDIF input board, Teleporter and future USB module (and possible OTTO II). If you crank up the Placid, use caution checking temp as the sinks will get very hot. I have calloused hands so it takes a couple seconds for me to realize I am being burned.....j/k, actually I use a Fluke temp sensor meter. Edited by user Monday, December 24, 2012 4:02:49 AM(UTC)
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I increased the current through the Placid to 700mA. Everything working fine now. One heatsink gets hotter but I think its still below 50 degrees celsius. I feel stupid for not thinking of that. Thanks for your help Rich.
Mike
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