Search found 519 matches

by PID_Stop
Thu Apr 19, 2018 9:58 am
Forum: TV Studio Engineering
Topic: RDL ST-SSR1
Replies: 2
Views: 38

Re: RDL ST-SSR1

It might possibly work, but RDL categorizes it as analog gear on their website. I would be concerned about what happens at switch transitions, since this product is intended to perform a crossfade, which will yield corrupt data during the transition. My inclination would be to use an ordinary DPDT r...
by PID_Stop
Fri Apr 13, 2018 11:43 am
Forum: Master Control
Topic: X-Y protocol??
Replies: 20
Views: 225

Re: X-Y protocol??

w9wi wrote:
Fri Apr 13, 2018 8:11 am
Thing is, you're using it for its intended purpose:)
Yeah, that does constitute cheating, doesn't it? :lol:
by PID_Stop
Fri Apr 13, 2018 7:27 am
Forum: Master Control
Topic: X-Y protocol??
Replies: 20
Views: 225

Re: X-Y protocol??

Problem is, it told the computer it supported 1080i/60. Not 59.94 -- 60.00. When connected to the computer, the computer refused to output 59.94. Monitors & the router didn't care -- but the control room switcher & video servers sure did.ough times...) The microconverters we're using tell the compu...
by PID_Stop
Fri Apr 13, 2018 7:20 am
Forum: Digital Television
Topic: MPEG1 Audio Layer II vs. AAC which one is better?
Replies: 1
Views: 51

Re: MPEG1 Audio Layer II vs. AAC which one is better?

I should think that the audio encoding format you choose depends on where you are located. I infer from your question that you are not in the United States, where the ATSC standard calls for Dolby AC3. MPEG1 layer 2 (also known as MP2) is somewhat older, is less efficient, and is less flexible -- fo...
by PID_Stop
Thu Apr 12, 2018 3:36 pm
Forum: Master Control
Topic: X-Y protocol??
Replies: 20
Views: 225

Re: X-Y protocol??

Not a fan of the Cobalt stuff. Had way too many failures, particularly with their crappy power supply design. Interesting. We have something approaching 200 Cobalt OpenGear cards of various descriptions... everything from D/As to up/down/cross converters to CALM processors. We even have a handful o...
by PID_Stop
Thu Apr 12, 2018 9:49 am
Forum: Master Control
Topic: X-Y protocol??
Replies: 20
Views: 225

Re: X-Y protocol??

Not a big fan of Imagine hardware, it's always something with them. Agreed. We have had a lot of Leitch gear over the years, and it was remarkably robust. I was unimpressed when they were acquired by Harris, and even less impressed when Harris imploded into Imagine and Gates Air. Ross and Cobalt ha...
by PID_Stop
Tue Apr 10, 2018 10:37 am
Forum: Master Control
Topic: X-Y protocol??
Replies: 20
Views: 225

Re: X-Y protocol??

To be clear: there's the physical layer, which on a Leitch router was generally either coax (between router frames and control panels) or a 5-pin miniature connector (linking multiple frames for multi-level switching). Many of the frames also had a serial interface in order to extend control and con...
by PID_Stop
Mon Apr 09, 2018 3:16 pm
Forum: Master Control
Topic: X-Y protocol??
Replies: 20
Views: 225

Re: X-Y protocol??

The X-Y data protocol also applies to the RS-232 / RS-422 ports that you find on various Leitch and newer switchers (Xplus, Panacea) and the SPT translator. If you have a specific question, I might be able to answer it: I've written quite a bit of software over the years to control Leitch routers. J...
by PID_Stop
Mon Mar 26, 2018 6:47 am
Forum: TV Engineering
Topic: Transmitter Nitrogen Issue
Replies: 25
Views: 444

Re: Transmitter Nitrogen Issue

Okay that makes sense, but in terms of a leak in my waveguide, if I did indeed have a leak, would any pressurized air in the waveguide escape through the leak. So in theory when I remove my nitrogen input to the waveguide, I wouldn't feel air pushing back out if I had a leak? Depends on how big the...
by PID_Stop
Thu Mar 22, 2018 12:25 pm
Forum: TV Engineering
Topic: Transmitter Nitrogen Issue
Replies: 25
Views: 444

Re: Transmitter Nitrogen Issue

And as stated which is the most confusing to me (it may not be as confusing to someone with more experience) is the fact that pressurized air is pushing back out from the waveguide to my regulator. Let's suppose you're pressurizing 1,000 feet of 3-1/8" transmission line... that line has a volume on...
by PID_Stop
Mon Mar 19, 2018 10:24 am
Forum: AM Radio
Topic: GatesAir suspends AM TX sales (Radio World)
Replies: 25
Views: 757

Re: GatesAir suspends AM TX sales (Radio World)

...They will be supplying FM transmitters as well as TV transmitters because of the Repack...so AM Rigs take a back seat. Just curious, beyond a few FM's going with lower gain antenna's and higher power TX's to clear tower space, and an even fewer that builds full power aux sites rather than lower ...
by PID_Stop
Wed Mar 14, 2018 7:11 am
Forum: Ask the Engineers
Topic: Sony BVH2000PS tension adjustment.
Replies: 18
Views: 581

Re: Sony BVH2000PS tension adjustment.

Good morning, I just watched the video, and have a couple of ideas you might try. One note: when you get an alarm and the buzzer is beeping, pressing STOP will silence the buzzer. It's easier to concentrate when the machine isn't making so much noise! Anyway, these steps should be done in the order ...
by PID_Stop
Mon Mar 12, 2018 7:28 am
Forum: Ask the Engineers
Topic: Sony BVH2000PS tension adjustment.
Replies: 18
Views: 581

Re: Sony BVH2000PS tension adjustment.

You're really making some excellent progress with that machine! It's hard for me to be objective about the audio quality because I tend to compare it against other analog VTRs. It's much better than the 2" Ampex machines we used to have, and also much better than the U-matic 3/4" machines that we we...
by PID_Stop
Fri Mar 09, 2018 8:16 am
Forum: Ask the Engineers
Topic: Sony BVH2000PS tension adjustment.
Replies: 18
Views: 581

Re: Sony BVH2000PS tension adjustment.

Hooray! Good for you. As far as I know, there is no difference between the potentiometers -- they are both 15k linear taper. Reversing the wires is something I would only have thought of if the pot had just been replaced; one of the things I tend to ask myself during troubleshooting is "what's the l...
by PID_Stop
Thu Mar 08, 2018 12:50 pm
Forum: Ask the Engineers
Topic: Sony BVH2000PS tension adjustment.
Replies: 18
Views: 581

Re: Sony BVH2000PS tension adjustment.

There are several things that are not obvious here! If you look at the schematic for the TT-01 board (volume 2 page C-160), you'll notice that the feeds from both supply arm amplifiers are called "X" and "Y". "X" tends to rise in direct proportion to the voltage coming from the potentiometer, while ...