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Post by sean on Oct 1, 2020 7:52:23 GMT -6
I have a Lexicon PCM92 that I'd like to hook up to a Avid HD I/O via AES. AES out of the Avid, AES in to Lexicon, AES out of the Lexicon, AES in to the Avid. However, I lose sync lock with 96K sessions. Works fine at 48K.
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Post by thirdeye on Oct 1, 2020 9:03:04 GMT -6
I definitely could be wrong, but I think by default HD i/o's AES outputs will mirror analog outputs 1-2. I'd suggest just to double check the i/o setup and hardware setup to make sure outputs 1-2 and AES outputs 1-2 are separate.
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Post by sean on Oct 1, 2020 9:39:13 GMT -6
I think I've got it working. I had a BNC cable coming out the loop sync and I guess that was fudging it up, but I’m still occasionally getting little clocking errors/spikes
It does sound good though!
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Post by Ward on Oct 1, 2020 13:25:43 GMT -6
I think I've got it working. I had a BNC cable coming out the loop sync and I guess that was fudging it up, but I’m still occasionally getting little clocking errors/spikes It does sound good though! I wanna hear more about this because I'm dying to get a Bricasti integrated into the system this way! If you can put a DVerb on each HDIO, that would be awesome! (or awesome sausages, as the kids say) |
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Post by sean on Oct 1, 2020 17:48:37 GMT -6
AES in and out, and Word Clock out of Avid into Lexicon. Working now.
Going to hook up my other Avid I/O using loop sync, and try the AES in and out and work clock out of that to a SPX2000 and see how nicely they play together.
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Post by thirdeye on Oct 1, 2020 19:06:05 GMT -6
AES in and out, and Word Clock out of Avid into Lexicon. Working now. Going to hook up my other Avid I/O using loop sync, and try the AES in and out and work clock out of that to a SPX2000 and see how nicely they play together. I think you could also select your clock source on the PCM 92 to AES, and it would work that way as well (no word clock cable needed). Regarding using the word clock input on the PCM92, this is from the PCM92 manual. "WORD CLOCK INPUT
This connection allows the PCM92 to lock to a Host system clock. It is
not terminated. For best results we recommend using “T” connectors
when setting up a BNC Word Clock network and terminating the end
of this network with a 75 ohm BNC terminator." |
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Post by svart on Oct 1, 2020 19:16:26 GMT -6
AES is biphase encoded. The data stream is also the clock. AES needs no external clock.
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Post by thirdeye on Oct 1, 2020 19:16:40 GMT -6
I think I've got it working. I had a BNC cable coming out the loop sync and I guess that was fudging it up, but I’m still occasionally getting little clocking errors/spikes It does sound good though! It should work great. You may find that you have a preference regarding the sound of the unit depending on how it's wired up, analog or digital. I have our Lexicon 300 wired up using analog and digital, since it can do "Dual Machine" mode. One stereo reverb using the analog i/o and one stereo reverb using the digital i/o. |
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Post by sean on Oct 1, 2020 19:18:23 GMT -6
I wasn’t able to get it to work using AES as the clock source
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ericn
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Post by ericn on Oct 1, 2020 19:58:17 GMT -6
I wasn’t able to get it to work using AES as the clock source Hey Sean from memory, and it’s been 5 years since I had a Lexicon 80/90 series and at least 20 since I used the digital I/O You have to dig pretty deep to switch the clock from AES / WC so if the one you have was set to WC it would work how you have it. I think the clock and digital setup is easier to get to on the SPX2K. Yamaha has all the manuals on line. |
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Post by sean on Oct 1, 2020 20:02:42 GMT -6
I have on the Lexicon Audio Source: AES. Clock Source: AES. Clock Rate: 96K (locked). As soon as I hit play in Pro Tools it loses the lock.
In Pro Tools Hardware, I have 15/16 input the AES/EBU. 15/16 out is Digital. Digital format is AES
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ericn
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Post by ericn on Oct 1, 2020 20:05:49 GMT -6
I have on the Lexicon Audio Source: AES. Clock Source: AES. Clock Rate: 96K (locked). As soon as I hit play in Pro Tools it loses the lock. Hmmmm just for fun try switching it to WC |
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Post by sean on Oct 1, 2020 20:11:54 GMT -6
It won't lock switching it to BNC with AES as the audio source
Do I need to terminate the WC in order to use AES as the clock source?
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Post by Ward on Oct 2, 2020 5:14:31 GMT -6
It won't lock switching it to BNC with AES as the audio source Do I need to terminate the WC in order to use AES as the clock source? IME, you should ALWAYS terminate the wordclock. |
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Post by sean on Oct 2, 2020 5:53:10 GMT -6
It won't lock switching it to BNC with AES as the audio source Do I need to terminate the WC in order to use AES as the clock source? IME, you should ALWAYS terminate the wordclock. But in this scenario, where I’m not using the BNC WC, would it have an effect? I would think not since the unit isn’t not sold terminate. |
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ericn
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Post by ericn on Oct 2, 2020 11:09:45 GMT -6
It won't lock switching it to BNC with AES as the audio source Do I need to terminate the WC in order to use AES as the clock source? IME, you should ALWAYS terminate the wordclock. Yes but you need to know how to do it correctly for the piece of gear |
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Post by sean on Oct 2, 2020 17:17:58 GMT -6
I bought some 75 Ohm BNC terminators...we'll see what happens when they arrive
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Post by Ward on Oct 2, 2020 19:10:27 GMT -6
I bought some 75 Ohm BNC terminators...we'll see what happens when they arrive Those would be the ones. in reference to your previous post . . . I found when using the sync or not, I still needed to terminate the WC. Otherwise it did create clocking error clicks that were very disturbing |
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ericn
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Post by ericn on Oct 2, 2020 20:45:10 GMT -6
I bought some 75 Ohm BNC terminators...we'll see what happens when they arrive Those would be the ones. in reference to your previous post . . . I found when using the sync or not, I still needed to terminate the WC. Otherwise it did create clocking error clicks that were very disturbing He just needs to check if the Lexicon and SPX have built in termination or not |
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Post by sean on Oct 2, 2020 22:01:26 GMT -6
Those would be the ones. in reference to your previous post . . . I found when using the sync or not, I still needed to terminate the WC. Otherwise it did create clocking error clicks that were very disturbing He just needs to check if the Lexicon and SPX have built in termination or not According to the manual the WC on the PCM92 is not terminated, but the SPX2000 is. |
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Post by sean on Oct 3, 2020 20:05:09 GMT -6
So, it works if the session is at 48K, but not when the session is at 96K (even though the PCM92 shows lock) any reason that could be?
I guess the PCM92 can’t do 96K via AES. The SPX2000 can, worked like a charm
This PCM92 is a nightmare. Going through the manual it says in the AES Setup section that to change the "mode" from Consumer to Professional to send information in AES format. Well...it's not possible to change the mode as far as I can figure.
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ericn
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Post by ericn on Oct 4, 2020 15:41:50 GMT -6
So, it works if the session is at 48K, but not when the session is at 96K (even though the PCM92 shows lock) any reason that could be? I guess the PCM92 can’t do 96K via AES. The SPX2000 can, worked like a charm This PCM92 is a nightmare. Going through the manual it says in the AES Setup section that to change the "mode" from Consumer to Professional to send information in AES format. Well...it's not possible to change the mode as far as I can figure. Yeah lexicons via AES were always a bit of a nightmare, it always felt like AES was an after thought. The question is Sean is it more useful to you to 1.work at 48k or lower 2. Run the Lexicon analog 3 find some inexpensive sample rate converter. Maybe check if you lex has the latest firmware? |
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Post by sean on Oct 4, 2020 15:50:02 GMT -6
Tried to update the firmware but, well, I’d have to find a PC or a Mac on an older OS.
I think I’ll probably just run it analog if I can figure it out
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