Is anyone using the Panasonic AV-HS300G to Imag

[TrevoreMoran]

Hi I really need some help we are trying to move to IMAGing. This is what we have

Switcher-Sony Anycast

Projectors-Benq SP830 DLP Projector

And I ton a Lag about a half a second between real and what shows up on screen

I am looking at moving to the Panasonic for more inputs and the Multi viewer. So is anyone using the the the AV-HS300G switcher for IMAGing??

[waynehoskins]

Is there any computer in-between camera and projectors?

What kind of signal are you taking from the camera head?

[TrevoreMoran]

We have Cannon XLH1 and we are carrying the signal bnc and there is no computer

[tdangelo]

The reason the Anycast is creating video delay is because the unit has internal frame synchronizers to deal with non-genlockable equipment (or a system set-up which is not using genlock).

In this respect the small Panasonic switchers operate in the same manner (although there may be a way to turn off the frame syncs on the Panasonics, I am not sure).

The ultimate answer is to use a switcher which does not use internal frame synchronizers and genlock and time all sources at the switcher. Depending on what equipment you have available and skill set, this may involve a waveform monitor and a video engineer.

Aside from this the next major culprit for video delay are any up, down, cross conversion which may be going on upstream of the projectors.

- Tom D'Angelo
All Mobile Video
NYC

[tomtv]

if eight inputs is enough the panasonic is nice for the money. for a bit more you can get the new for-a multi format switcher that expands to 12 inputs. i like the broadcast pix solution as well since it has the same frame delays as the panasonic etc. that are multi-format plus you get playback and graphics included. they offer the multiview as a touchscreen too, works nice. upgrading to syncable cams will help too.

[waynehoskins]

Originally Posted by TrevoreMoran

We have Cannon XLH1 and we are carrying the signal bnc and there is no computer

What kind of signal is on the BNC-terminated line(s)? BNC is only the type of connector on the cable and doesn't tell us a thing about either the kind of cable or the signal on the cable. One of my switchers uses a pair of coaxial lines (with BNCs) for RS-423 front-panel communication. It's also common in radio.

I can only see having a full half-second of frame delay if you're running SDI out of the head, especially unsynchronized. Frame syncs will cost you about a frame each, but a half-second is 15 frames.

Another possibility -- are things in time on your program monitors? The delay could be in your projectors.

[rlahoda]

I'm using the Panasonic AV-HS400a and it works great. Not the same as the 300, but I love it. You can get input cards for DVI/VGA, composite, component and SDI. Up to 8 inputs, built in multiviewer, frame sync on all inputs, the input cards have scalers built in for SD to HD conversion, output cards for DVI/VGA, component, SDI also with scalers, AUX output, 1 Key (chroma, luma, full), 1 DSK (luma, full), PnP, 3D warp transitions and a flying Key. I know I sound like an ad, but hey, It's a great box!

[petereit]

I know this is an old thread, but I thought I should throw in my $.02 since we're using a Panasonic AV-300G switcher for IMAG. Here's my complete chain:

JVC GY-HD110U camera
Component cable out
BlackMagic component-to-SDI converter
100' SDI cable
Panasonic switch
100' SDI cable
AJA SDI-to-HDMI converter
2' HDMI cable
Hitachi UXGA Projector

Through all of those conversions, there is only a barely perceptible delay. I'll guess maybe 3 frames. I use it for IMAG every service. Works great!

[manu4jc]

Thanks for sharing your setup petereit ... I am starting to think the camera has a lot to do with the lag issue... I have a similar setup as yours but using a Canon XH-G1 camera with HD-SDI out and GENLOCK and have a noticible delay its not 1/2 a second like Trevoremoran stated he is having with his H1 but it is a good 1/5 of a second which is just enough to upset the viewers.

I am going to try different cameras... and will post my setup once it works.

Regards