From: Milton Aupperle <maupperl@gmail.com>

Date: May 27, 2015 3:20:32 PM MDT

To: Astro_IIDC@yahoogroups.com

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

Hi Kevin;

Thanks for the info..

You only see "Packet Size" mentioned if your running in Format 7.

Your running in Fixed size Format 2 - Mode 7 at 7.5 fps which means each packet is 4 kilobytes in size. With two cameras running your running at 8 kilobytes per packet, and that's completely filling each packet in the stream. So your running on the edge of what can be carried over the isochronous stream. Dropping to 8 bit for one or both cameras would likely make it more reliable for streaming. However if the video stream starts up just fine, then I'd keep using it at 16 bit.

HTH..

Milton Aupperle

On 2015-05-27, at 12:18 PM, Kevin in Fort Davis fsm79734@gmail.com [Astro_IIDC] <Astro_IIDC@yahoogroups.com> wrote:

Hi Milton, here is the CAP file for a single frame, and then a short movie that I just captured.  However, unlike your capture file, on the "IIDC Format" line, ours does not include any information regarding Packet Size.  Hmmm...

=================== File:20150527_124832.47_L.tiff #frames 1

Monochrome Camera = Model:'Flea3 FL3-FW-20S4M' SerialNumber: 0xBA28DB

IIDC Format: 2 Mode: 7 FrameRate: 7.50

Camera Display Format: 1600 x 1200 16 bit

CCD Image Left: 0

CCD Image Top: 0

CCD Image Width: 1600

CCD Image: Height 1200