Help Desk

Omnibus/columbus

Shields9538 — Fri, 07 Aug 2009 17:08:45 GMT

Anyone with Omnibus experience?

VDCP Communication

wagassonkar — Wed, 05 Aug 2009 06:12:50 GMT

Hello I am new to broadcast engineering and needed to play videos from an Air Speed using VDCP commands.

I could make to play, stop, pause, list IDs using commands but failing in CUE command. It is very much needed to make a perfect setup. I am unable to find any good example to help me out. I am using VB.net for the development. My sample effort is as following where I am trying to cue an ID 'FRED1---', please take a look as its not working out for me. Please help me with some good example as I am feeling all helpless.

Private Sub PlaySelectedID()

If SerialPort1.IsOpen = False Then

SerialPort1.Open()

End If

Try

Dim bb() As Byte = {&H2, &HA, &H20, &H24, &H46, &H52, &H45, &H44, &H31, &H20, &H20, &H20, &HF6}

''PLAYSELECTED ID

Dim intByteToRead As Integer = 0

SerialPort1.Write(bb, 0, 13)

intByteToRead = SerialPort1.BytesToRead()

Dim intReadReturn As Integer = 0

Dim byteRead(intByteToRead) As Byte

intReadReturn = SerialPort1.Read(byteRead, 0, intByteToRead)

MessageBox.Show("done") Catch ex As Exception

End Try

End Sub

High Pitched Noise from Audio Consol

franderson — Mon, 03 Aug 2009 20:54:53 GMT

Recently, while working with a Calrec Sigma audio consol, there was a loud high pitched noise whenever the mics are opened. A file reload and consol reset did not help. A reset from the equipment rack finally corrected the problem. The problem only occurred with the mics both hardwired and RFmics.

Any idea what the cause may have been?

Timing & phasing problems

lholhos — Sat, 01 Aug 2009 10:45:24 GMT

I got TV studio and from now nd then I have to use third party equipment( Graphics computer)..the thing is evertime i try to time and phase it using the Vector scope i neva get it ryt coz on the scope its time and phased properly, but when one look at the picture (colors) are wrong..any explanation for this..

Video router crosspoint redundancy

menelaos — Thu, 30 Jul 2009 17:29:12 GMT

Hi,

I'm an engineer to a post production facility and we are looking for an HD/SD router with 128x128 inputs/outputs.

I like the Sirius from Probel, does anyone knows if it supports crosspoint redundancy ???

I know that Utah & Nvision does. Probel also but for the larger systems.

Thanks,

Tri-Level Sync Question

RKupillas — Sat, 25 Jul 2009 06:12:43 GMT

If Tri-Level Sync is a NTSC signal as I believe it is because I can see it on a ntsc scope, then what is the purpose of a setting on our sync generaton that switches it between 1080i 59.94 and 720p 59.94.

Help required in broadcast time delay

nandils — Sat, 11 Jul 2009 07:49:15 GMT

I need to delay a composite Audio Video input for 10 hours and to get a firewire outpu. I bought Sony DSR-DR1000AP. It nevers allows me to play while continous recording. Is there anyway out ?

Blasting near Antenna Farm

loho — Thu, 14 May 2009 04:28:01 GMT

We live near a large antenna farm. A neighbor to the antenna farm is proposing a gravel quarry, which will include blasting. Our neighborhood association is fighting the quarry. Since the antenna farm is on public land we are not sure that the operators of the antennas were given proper notification. So the question (finally!) is, would blasting and heavy machinery close to an antenna farm be a problem for alignment and equipment?

Thank you!

help anyone please...

mallarilawrence — Tue, 28 Apr 2009 03:05:25 GMT

Here's the scenario, we have a 3-camera setup outside on one of our studios. The problem is, everytime we are switching to one of those cameras, the audio is being clipped resulting to loss of audio on-air. What do you think is the best explanation here? We are using triaxial cables on all of our cameras. Thanks a lot! any replies will be appreciated.

Prepare My Video to be Broadcasted.

Yveworth — Mon, 13 Apr 2009 22:44:31 GMT

Hello Everyone. I really hope you can help me out here, I'm on a bit of a time crunch.

I am making a commercial that will be broadcasted on Satellite Television. I need to know, basically, what I need to do prepare my commercial to be broadcasted. Or at least where to begin.

Also, I know that some parts of my question will be dependent on some specific information from the broadcast station. If that is the case I need to know what information I need to acquire from them and then once I have it then what do i do with it?

1) How do I make my Video's colors Broadcast safe? I'm using Final Cut Pro.

2) I am shooting on a Panasonic HVX. If the station can accept HD footage, Am i fine? And if they can't what do I need to do to make my footage acceptable?

On top of those two questions I basically just need general guidance. I am experienced with video and editing and all that but broadcast is something I never tackled.

Where can I find the 2007 April Freeze Frame question ?

yoelp — Thu, 20 Mar 2008 11:00:52 GMT

Wohler Amp2-VSA Audio Monitor Dropping Out

Treytrumpet1 — Fri, 27 Mar 2009 21:27:12 GMT

Hello,

I have a question concerning our house Wohler audio monitor (Model # Amp2-VSA). It is rack mounted and hooked up through an Ocelot Routing System. Whenever previewing audio from one of our DVCPro decks or BETA decks, the audio will consistently drop out for about 2 seconds. The frequency of this drop out is seemingly consistent, but sometimes it is not. We do have the Wohler monitoring via 1 BNC cable that is an SDI signal. That SDI signal is being converted multiple times through AJA boxes. I'm not a full blown broadcast engineer yet, but I'm going to school to be one. I can't figure out this problem, and the way it everything is hooked up in the racks is quite confusing. None of the patch fields are labeled, and there are multiple conversions from digital to analog and back to digital along the pipeline. I'm not sure if this has something to do with the problem or not. Any suggestions or ideas?

Thanks,

Trey Cook

Video Editor/3D Artist/Aspiring Broadcast Engineer

Chattanooga, TN

I'm Not An Engineer. . .

carmstrong813 — Fri, 09 Jan 2009 18:48:30 GMT

yet my boss seems to think that I am. we recenly purchased a Helius system and need to integrate it into our on-site closed-circuit television system. Am I wrong in thinking that running the computer system out to a scan converter and then to the receiver is the only step that we need to take?

Once again, I'm not an engineer, just the sole production guy at a small agency, and am looking for any advice on incorporating a computer into our closed-circuit television system. And advice would be great. Thanks.

Dirt removal from image

AsadUllahKhan — Sat, 02 Aug 2008 13:14:34 GMT

Hi All,

I m working on images stored and finding a solution for old time or bad images those got dirt in the form of dust, tea or some other and these dirt get scanned as part of image while original contents of image are visible under that dirty shade. Is there any possible software solution to remove these old time dirt or some missing contents due to folding of original paper which was scanned.

Comparison information sought - models of DigiBeta cameras

GP — Fri, 04 Jul 2008 12:33:54 GMT

Hello everyone, I am getting ready to buy into DigiBeta PAL (16:9 and 4:3) but I have not been able to find any information that compares the features and capabilities of the different models. An Aussie shooter with the DVW-700WSP tells me that while his machine has 10-bit processing at the camera head, the 790WSP has 12-bit. I understand that there is also a model 709P.

And that's all I've been able to find out.

Does anyone out there have practical experience with these various cameras, to be able to offer up an opinion? There's a significant difference in re-sale prices, so I have to assume the 'features and benefits' graduation is at least perceived to be significant.

Grant.

Strange technical issue

paulthurston — Mon, 03 Mar 2008 19:12:29 GMT

I have a dilemma and I was wondering if somebody could help me analyze this out. I have an online digital component, NTSC frame rate, video editing system that has an issue I can’t seem to figure out. The dilemma:At times, the video images will begin to flicker so slightly for no apparent reason. It’s like RF gets into the cable but this is SDI video (I figured if RF was causing the interference, I would probably lose the digital component video signal all together.) I began noticing this issue when one of our camcorders was tilted up one day. After that, the images that came from that camcorder had this flicker anomaly. Then the flicker went away. Then two years after that, at times the flicker would return. I thought at first our camcorder was dying. Then the flicker would at times show up on images recorder from other sources. This flicker is unlike what you record when you shoot fluorescent tubes under 50 Hz lighting with a shutter speed of 1/60. This flicker is less noticeable. As stated, all video equipment is interconnected via SDI cables. All cable is brand new and all BNC connectors are true 75 Ohm. The cables and connectors are well installed. All cable runs are less than 9 feet (3 m.) All the video system is properly genlocked. Electrically, all video equipment is powered via a symmetrical power system. The power provided is 115V at 50 Hz. All video equipment is 50-60 Hz compatible. The flicker is recorded and is not just an anomaly of analog video connections to the video monitors. All video equipment is about 10 years old.

Has anybody seen flicker situations like this before?

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