Introducing the bit "Teleporter" - Page 19 - diyAudio
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Old 20th April 2012, 09:56 AM   #181
Corpius is offline Corpius  Netherlands
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Default PSB for teleporter

Hi,

I just received my teleporters and going to build one of them into my cdpro2 transport. Because this is housed into a tight chassis the power supply needs to be small in size.
Brian Donegan also told me that the supply is not that critical because the teleporters have their own voltage regulators, but is should be descent. So I'm planning to use a LM317 based power supply. The LM317 should have low ripple (80 db rejection). Would the supply be good enough for the teleporter?
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Last edited by Corpius; 20th April 2012 at 10:02 AM. Reason: misspelling
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Old 20th April 2012, 01:05 PM   #182
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Quote:
Originally Posted by Corpius View Post
Hi,

I just received my teleporters and going to build one of them into my cdpro2 transport. Because this is housed into a tight chassis the power supply needs to be small in size.
Brian Donegan also told me that the supply is not that critical because the teleporters have their own voltage regulators, but is should be descent. So I'm planning to use a LM317 based power supply. The LM317 should have low ripple (80 db rejection). Would the supply be good enough for the teleporter?
Abosultely. I would make it output 5-6V.

The LDO on the teleporter is very good. So you have a lot of flexibility.
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Old 20th April 2012, 01:06 PM   #183
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Quote:
Originally Posted by merlin el mago View Post
How much jitter add the Teleporter?
Refer to the data-sheet. As that is all the information I have.
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Old 20th April 2012, 01:09 PM   #184
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Quote:
Originally Posted by Russ White View Post
Pulse skew (which is the major cause of jitter) is about 55ps.

Propagation delay (not actually that critical as it will be the same for all four channels) is about ~3ns.

Channel to channel skew is a mere 60ps.

And of course The bottom line is - it sounds absolutely excellent when used with B3.

Cheers!
Russ
Thanks Russ, it's just answered for you
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Old 20th April 2012, 01:15 PM   #185
Corpius is offline Corpius  Netherlands
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Quote:
Originally Posted by Russ White View Post
Abosultely. I would make it output 5-6V.

The LDO on the teleporter is very good. So you have a lot of flexibility.
Thanks!

should I connect my cdpro2 I2S output like this? Assuming that the serial clock is the same as the bit clock.

EDIT: What about the ground from the I2S
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Old 20th April 2012, 01:23 PM   #186
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Quote:
Originally Posted by Corpius View Post
Thanks!

should I connect my cdpro2 I2S output like this? Assuming that the serial clock is the same as the bit clock.

EDIT: What about the ground from the I2S
From the source you must connect GND and the signals to the Teleporter.

I can't speak for the CDPro output, but what you say sounds correct. One thing to keep in mind is that as far as I know the CDPro has a 48fs bit clock. Keep in mind that many DACs including the Buffaloes need a 64fs bit clock.
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Old 20th April 2012, 01:26 PM   #187
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Quote:
Originally Posted by Russ White View Post
From the source you must connect GND and the signals to the Teleporter.

I can't speak for the CDPro output, but what you say sounds correct. One thing to keep in mind is that as far as I know the CDPro has a 48fs bit clock. Keep in mind that many DACs including the Buffaloes need a 64fs bit clock.
I going to use the Metronome to tackle this difference in bit clocks.
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Old 20th April 2012, 01:37 PM   #188
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Originally Posted by Corpius View Post
I going to use the Metronome to tackle this difference in bit clocks.
Perfect.
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Old 20th April 2012, 01:44 PM   #189
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For those who are interested, I quoted this from Brain at the TPA support forum:

Quote:
There is some variation in terminology between Phillips and Wolfson, so here's how you want to hook it up...

CDPRO I2S Header -> DAC header
===========================================
Pin 2 SCLK (Serial Clock) -> BCK (Bit Clock)
Pin 3 WCLK (Work Clock) -> LRCK (Left Right Clock)
Pin 4 DATA -> DIN (Data In)
Pin 5 GND -> G (Ground)

Optional Clock Header -> DAC Header
===========================================
Pin 2 CLK16 -> SCK (System Clock) (Commonly called Master Clock)

If you use the Metronome, you run the four I2S outs of the CDPro to the metronome in (no Metronome SCK input), then run the five metronome outs to the Opus DAC(s).
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Old 20th April 2012, 01:56 PM   #190
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Dou you know how much fs bit clock has the CEC TL1?
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