From: Milton Aupperle <maupperl@gmail.com>

Date: May 24, 2015 7:16:10 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] IR Cut Filter Necessary?

Hi Kevin;

On 2015-05-24, at 3:50 PM, "Kevin in Fort Davis fsm79734@gmail.com [Astro_IIDC]" <Astro_IIDC@yahoogroups.com> wrote:

I thought of something that did occur to me that I failed to mention

regarding the presumed bandwidth issue and on which the 8/16 bit

setting might or might not have any bearing.  The problem I normally

see is that, when launching Astro IIDC and selecting which of the

(now) two cameras I want to use, either it only lists one of the

cameras, and sometimes neither of them.  Then again, sometimes it

works fine and lists both of them.

That's "odd". I have seen that in the past when I had a bad cable, bad connectors or bad camera. One camera basically fried itself, main chip was a hot plate and would not show up on the Bus. In another case a FW800 cable was faulty and each time the camera was moved, it would go on or off the bus.

Check the Console log in case some message shows up when this happens. Also if you launch the Apple's "SystemInformation.app" (in Utilities folder in 10.8.5 - Apple may have "hiddne" it as the dumb OSX down to iOS level), and then click on the "Hardware" item on the left side and select "FireWire" from the sub list - that shows you which devices are on the bus. If the Camera doesn't show up, then there is something at a much lower level happening.

The reason that I bring this up is, regardless of the 8/16 bit

setting, shouldn't Astro IIDC see both of the cameras upon launch?  In

other words, I would think that if my problem is a bandwidth issue and

the 8/16 bit setting were to make a difference with that, then that

would occur only after I had chosen a resolution/bit depth setting and

"starting video" in Astro IIDC.  Does that make sense?

It would not be a bandwidth issue if you don't see the camera. Basically, if there isn't enough to run your camera at the chosen setting, then you get a warning from Astro IIDC for FireWire cameras. For USB, there is no bandwidth allocated because it's bulk transfer - in that case, you might never receive frames of video data if the USB is being over tasked.

So if it doesn't find the camera, that likely means it isn't showing up on the Bus properly. I would see if the "SystemInformation.app" or console log show anything too.

Also when I'm back into work on Tuesday, I will send you a sample

capture file so that you can see some of the details.

Again, thanks so much for taking time to assist with this!

-Kevin

No problem .. hope some of this helps..

Milton Aupperle