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passing digital audio signal through an rgbhv switcher

kctkmcmahon
3/29/09  

I bought an In-line rgbhv matrix switcher on ebay. It works great for rgb signals. I was hoping to also use one of the h,v inputs/outputs to switch digital audio signals. However, this doesn't work. The digital audio will switch on any of the rgb connectors. The manual says it has 475mhz bandwidth.

Any ideas on why digital audio signals won't work on the h/v connectors?
Is it because they are for synch signals?


Thanks,

Ken
3/29/09  

I can't speak for any of the Inline stuff, but Extron makes it quite clear that the sync boards in their RGBHV matrices are for TTL-level sync only and are not capable of passing video. Since sync is far less demanding than video this makes for a less expensive product vs. if all 5 boards had xxx MHz of video bandwidth when it wouldn't be utilized in 99% of the installations.

Digital audio has far more in common with video than it does TTL sync, so I'm not surprised that it wouldn't work on the Sync boards if Inline took a similar approach (IIRC, on the other hand, most Autopatch matrices have the specified bandwidth on all video levels...which seems like a waste to me)

Lincoln

--
Lincoln King-Cliby, CTS
Applications Engineer
ControlWorks Consulting, LLC
V: 440.729.4640 x1107 F: 440.729.0884 I:http://www.controlworks.com
Crestron Authorized Independent Programmer

-----Original Message-----
From: Crestron@... [mailto:Crestron@...] On Behalf Of kctkmcmahon
Sent: Sunday, March 29, 2009 11:40 PM
To: Crestron@...
Subject: [Crestron] passing digital audio signal through an rgbhv switcher

I bought an In-line rgbhv matrix switcher on ebay. It works great for rgb signals. I was hoping to also use one of the h,v inputs/outputs to switch digital audio signals. However, this doesn't work. The digital audio will switch on any of the rgb connectors. The manual says it has 475mhz bandwidth.

Any ideas on why digital audio signals won't work on the h/v connectors?
Is it because they are for synch signals?


Thanks,

Ken





------------------------------------

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A contact list of Crestron dealers and programmers can be found in the Database area.
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Steve Kaudle
3/29/09  

I've actually done this in the past with Autopatch RGBHV matrices. That said, I would never design a system in this way without first getting the blessing of the manufacturer of the switch gear in question. I would think a majority of the RGBHV matrices on the market would not be able to perform in such a capacity.

--- In Crestron@..., "kctkmcmahon" <ken.mcmahon@...> wrote:

I bought an In-line rgbhv matrix switcher on ebay. It works great for rgb signals. I was hoping to also use one of the h,v inputs/outputs to switch digital audio signals. However, this doesn't work. The digital audio will switch on any of the rgb connectors. The manual says it has 475mhz bandwidth.

Any ideas on why digital audio signals won't work on the h/v connectors?
Is it because they are for synch signals?


Thanks,

Ken
kctkmcmahon
3/29/09  

Thanks....guess i will forget the digital audio and use the audio outputs of the switcher to send l/r audio signals to the remote rooms.

The manual states:
Video input groups — Eight groups of five female BNC connectors
(numbered 1 to 8) for RGBHV, RGBS, RGsB, RsGsBs, or component video
input.

What does RGBS mean (and for that matter rsgsbs, rgsb)

--- In Crestron@..., Lincoln King-Cliby <lincoln@...> wrote:

I can't speak for any of the Inline stuff, but Extron makes it quite clear that the sync boards in their RGBHV matrices are for TTL-level sync only and are not capable of passing video. Since sync is far less demanding than video this makes for a less expensive product vs. if all 5 boards had xxx MHz of video bandwidth when it wouldn't be utilized in 99% of the installations.

Digital audio has far more in common with video than it does TTL sync, so I'm not surprised that it wouldn't work on the Sync boards if Inline took a similar approach (IIRC, on the other hand, most Autopatch matrices have the specified bandwidth on all video levels...which seems like a waste to me)

Lincoln

--
Lincoln King-Cliby, CTS
Applications Engineer
ControlWorks Consulting, LLC
V: 440.729.4640 x1107 F: 440.729.0884 I:http://www.controlworks.com
Crestron Authorized Independent Programmer


-----Original Message-----
From: Crestron@... [mailto:Crestron@...] On Behalf Of kctkmcmahon
Sent: Sunday, March 29, 2009 11:40 PM
To: Crestron@...
Subject: [Crestron] passing digital audio signal through an rgbhv switcher

I bought an In-line rgbhv matrix switcher on ebay. It works great for rgb signals. I was hoping to also use one of the h,v inputs/outputs to switch digital audio signals. However, this doesn't work. The digital audio will switch on any of the rgb connectors. The manual says it has 475mhz bandwidth.

Any ideas on why digital audio signals won't work on the h/v connectors?
Is it because they are for synch signals?


Thanks,

Ken





------------------------------------

******************************************************************************************

Check out the Files area for useful modules, documents, and drivers.

A contact list of Crestron dealers and programmers can be found in the Database area.
******************************************************************************************Yahoo! Groups Links
3/29/09  

RGBS - RGB with separate composite (horizontal and vertical on one wire) sync
RGsB - RGB with composite sync on green
RsGsBs - RGB with composite sync on all colors
RGBHV - RGB with separate horizontal and vertical sync

--
Lincoln King-Cliby, CTS
Applications Engineer
ControlWorks Consulting, LLC
V: 440.729.4640 x1107 F: 440.729.0884 I:http://www.controlworks.com
Crestron Authorized Independent Programmer

-----Original Message-----
From: Crestron@... [mailto:Crestron@...] On Behalf Of kctkmcmahon
Sent: Monday, March 30, 2009 12:06 AM
To: Crestron@...
Subject: [Crestron] Re: passing digital audio signal through an rgbhv switcher

Thanks....guess i will forget the digital audio and use the audio outputs of the switcher to send l/r audio signals to the remote rooms.

The manual states:
Video input groups - Eight groups of five female BNC connectors
(numbered 1 to 8) for RGBHV, RGBS, RGsB, RsGsBs, or component video
input.

What does RGBS mean (and for that matter rsgsbs, rgsb)


--- In Crestron@..., Lincoln King-Cliby <lincoln@...> wrote:

I can't speak for any of the Inline stuff, but Extron makes it quite clear that the sync boards in their RGBHV matrices are for TTL-level sync only and are not capable of passing video. Since sync is far less demanding than video this makes for a less expensive product vs. if all 5 boards had xxx MHz of video bandwidth when it wouldn't be utilized in 99% of the installations.

Digital audio has far more in common with video than it does TTL sync, so I'm not surprised that it wouldn't work on the Sync boards if Inline took a similar approach (IIRC, on the other hand, most Autopatch matrices have the specified bandwidth on all video levels...which seems like a waste to me)

Lincoln

--
Lincoln King-Cliby, CTS
Applications Engineer
ControlWorks Consulting, LLC
V: 440.729.4640 x1107 F: 440.729.0884 I:http://www.controlworks.com
Crestron Authorized Independent Programmer


-----Original Message-----
From: Crestron@... [mailto:Crestron@...] On Behalf Of kctkmcmahon
Sent: Sunday, March 29, 2009 11:40 PM
To: Crestron@...
Subject: [Crestron] passing digital audio signal through an rgbhv switcher

I bought an In-line rgbhv matrix switcher on ebay. It works great for rgb signals. I was hoping to also use one of the h,v inputs/outputs to switch digital audio signals. However, this doesn't work. The digital audio will switch on any of the rgb connectors. The manual says it has 475mhz bandwidth.

Any ideas on why digital audio signals won't work on the h/v connectors?
Is it because they are for synch signals?


Thanks,

Ken





------------------------------------

******************************************************************************************

Check out the Files area for useful modules, documents, and drivers.

A contact list of Crestron dealers and programmers can be found in the Database area.
******************************************************************************************Yahoo! Groups Links



------------------------------------

******************************************************************************************

Check out the Files area for useful modules, documents, and drivers.

A contact list of Crestron dealers and programmers can be found in the Database area.
******************************************************************************************Yahoo! Groups Links
3/30/09  

--- In Crestron@..., Lincoln King-Cliby <lincoln@...> wrote:

Digital audio has far more in common with video than it does TTL sync, so I'm not surprised that it wouldn't work on the Sync boards if Inline took a similar approach (IIRC, on the other hand, most
... Digital Audio is from an electrical point of view identical to composite video as this was the reason why Sony & Philips designed it that way back in the early 80ies with their SPDIF (=Sony Philips Digital Interface). As a matter of fact the first CD mastering recorders where more or less off the broadcast shelf Video Recorders from SONY which got a Digital Audio front end to. For the curious these are your keyword to search for:
SONY PCM-1600 PCM-1630 DMR-2000 DMR-4000 and the legendary PCM-F1.
http://www.thevintageknob.org/SONY/sonyvault/PCMF1/PCMF1.html

Sorry for the long post but I just wanted to show how smart these guys were to use what was already there..

Starry
3/30/09  

I have used the Kramer VPS88ETH (and its variants) to successfully
switch YUV on the RGB inputs, CVBS and DA on the HV inputs, and stereo
audio.



However this switcher series does have a couple of switches on the back
that switch the HV input types between TTL (synch only) and 75Ohm
(video/DA).
Matt
3/30/09  

If you look at the Sierra Video line of RGBHV routers, you can order them with 5 levels of video capability. 88V5VS is the model for 5 levels of 8x8. The nice thing about these routers is that you can route levels of an input independantly (not to different levels of course, different outputs). Not the best serial protocol, but workable.


I bought an In-line rgbhv matrix switcher on ebay. It works great for rgb signals. I was hoping to also use one of the h,v inputs/outputs to switch digital audio signals. However, this doesn't work. The digital audio will switch on any of the rgb connectors. The manual says it has 475mhz bandwidth.

Any ideas on why digital audio signals won't work on the h/v connectors?
Is it because they are for synch signals?


Thanks,

Ken
Chip Moody
3/30/09  

I have to go look up the definition of "Workable" now... :)

"You keep using that word. I do not think it means what you think it means" (OPBQOTD)

- Chip

--- In Crestron@..., "Matt" <mjrtoo@...> wrote:

If you look at the Sierra Video line ... Not the best serial protocol, but workable.
Matt
3/30/09  

capable of being dealt with...right?



I have to go look up the definition of "Workable" now... :)

"You keep using that word. I do not think it means what you think it means" (OPBQOTD)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

If you look at the Sierra Video line ... Not the best serial protocol, but workable.
Chip Moody
3/30/09  

I was looking for the inclusion of "akin to chewing tinfoil" or words to that effect... :)

- Chip

--- In Crestron@..., "Matt" <mjrtoo@...> wrote:

capable of being dealt with...right?




I have to go look up the definition of "Workable" now... :)

"You keep using that word. I do not think it means what you think it means" (OPBQOTD)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

If you look at the Sierra Video line ... Not the best serial protocol, but workable.
Matt
3/30/09  

If there's another router that can do matrix mapping like that, in that price category vs. quality, I would choose it... ;)



I was looking for the inclusion of "akin to chewing tinfoil" or words to that effect... :)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

capable of being dealt with...right?




I have to go look up the definition of "Workable" now... :)

"You keep using that word. I do not think it means what you think it means" (OPBQOTD)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

If you look at the Sierra Video line ... Not the best serial protocol, but workable.
Steve Kaudle
3/30/09  

I figured the correct answer was "Inconceivable" or something along those lines [2nd OPBQOTD].

;-)

--- In Crestron@..., "Chip Moody" <cfm@...> wrote:


I was looking for the inclusion of "akin to chewing tinfoil" or words to that effect... :)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

capable of being dealt with...right?




I have to go look up the definition of "Workable" now... :)

"You keep using that word. I do not think it means what you think it means" (OPBQOTD)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

If you look at the Sierra Video line ... Not the best serial protocol, but workable.
Chip Moody
3/30/09  

If we're not careful, we're not going to leave an opening for Foo to chime in...

<http://www.thinkgeek.com/tshirts-apparel/unisex/popculture/9f70/>

Oh, what I wouldn't give for a holocaust cloak...

- Chip

--- In Crestron@..., "Steve Kaudle" <steve@...> wrote:

I figured the correct answer was "Inconceivable" or something along those lines [2nd OPBQOTD].

;-)

--- In Crestron@..., "Chip Moody" <cfm@> wrote:


I was looking for the inclusion of "akin to chewing tinfoil" or words to that effect... :)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

capable of being dealt with...right?




I have to go look up the definition of "Workable" now... :)

"You keep using that word. I do not think it means what you think it means" (OPBQOTD)

- Chip


--- In Crestron@..., "Matt" <mjrtoo@> wrote:

If you look at the Sierra Video line ... Not the best serial protocol, but workable.

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