YSTV's home-made Devices: Difference between revisions

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=== [[Three Composite along Cat-5]] ===
=== [[Three Composite along Cat-5]] ===
* Active senders & recievers
Active video sender for 3 channels
* For VGA
* Add on bodge gets 3 composites down the CAT5


=====Dirty Little Box=====
===[[Dirty Little Box]]===
Turns 50hz RGB into composite


Dirty, in this case, because it's not very sophisticated. This will convert a 50Hz, interlaced RGB video signal (like the output of a Comodore / Acorn / BBC computer) to a composite video signal. It doesn't do any resolution changing or frame rate conversion, so if your input video isn't at the right rate (and most PC VGA cards won't do the right rate) then the output will go to pieces. As a result this isn't the most useful piece of kit in the station.
Dirty, in this case, because it's not very sophisticated. This will convert a 50Hz, interlaced RGB video signal (like the output of a Comodore / Acorn / BBC computer) to a composite video signal. It doesn't do any resolution changing or frame rate conversion, so if your input video isn't at the right rate (and most PC VGA cards won't do the right rate) then the output will go to pieces. As a result this isn't the most useful piece of kit in the station.


=====VGA DA=====
===[[VGA DA]]===
* 1 in
Distribution Amp for Computer screens
* 2 out
* Active amplified


=====VGA to Composite Dongle=====
=====[[S-Vid switcher]]===
([[User:Malcolm.chambers|Malcolm.chambers]] 03:31, 2 January 2010 (UTC)I don't think I've ever seen this)
Passive 4 to 1 switcher


A rather nasty widget that converts a VGA output from a PC (at any sensible low resolution) to composite and S-video outputs. It's powered from a USB plug (to get 5V), which can if necessary be put in another PC's USB port. It should be noted that as there is no USB data connection, the PC doesn't know that any power is being drawn from the port.
===[[S-Vid to Composite exchange]]===
An Active convertor with filtering


=====S-Vid switcher=====
===[[S-Vid DA]]===
Distribution Amp for S-video


* 4-to-1 or 1-to-4 passive switcher(although it can also be used on composite with the relevant adaptors).
=====[[VT C-E switch]]=====
* No syncing, and no framestore.
2 way composite switch
* Not clear whether the inputs are terminated when not selected or not.
 
=====S-Vid to Composite exchange=====
 
* Composite into S-video.
* S-video into composite.
* Active.
* Avoids the signal loss and resolution loss by actually extracting the relevant signals and sending them down the required cores, and actively combining the s-video signals to the composite output.
* One channel one way, 1 channel the other.
 
=====S-Vid DA=====
 
* Splits an S-video input into three identical outputs.
* Also provides gain and HF boost controls for the chroma channel, to correct for colour loss on long cables.
* Can be used on composite video through the S-video luma channel as a 3-ouput DA (chroma channel is a bit oddly behaved).
 
=====VT C-E switch=====
 
* A metal box
* Three BNC connectors and a switch in it.
*Shove two sources in, and the switch chooses what come out.
*Also supposed to do appropriate termination for unused source.
*C-E switch? why? - originally used to swap between VTC (Umatic) and VTE (VHS) due to a shortage of mux inputs.


== [[SpiDer]] ==
== [[SpiDer]] ==

Revision as of 15:56, 9 May 2011

Old page

http://old.ystv.co.uk/internal/docs/index.php?page=YSTVUserManuals

The Mux

32 in 4 out video router

Composite to Scart

Bodge lead with power for auto-switching TV's

S-Video to Composite

  • little bodge cables

Three Composite along Cat-5

Active video sender for 3 channels

Dirty Little Box

Turns 50hz RGB into composite

Dirty, in this case, because it's not very sophisticated. This will convert a 50Hz, interlaced RGB video signal (like the output of a Comodore / Acorn / BBC computer) to a composite video signal. It doesn't do any resolution changing or frame rate conversion, so if your input video isn't at the right rate (and most PC VGA cards won't do the right rate) then the output will go to pieces. As a result this isn't the most useful piece of kit in the station.

VGA DA

Distribution Amp for Computer screens

==S-Vid switcher

Passive 4 to 1 switcher

S-Vid to Composite exchange

An Active convertor with filtering

S-Vid DA

Distribution Amp for S-video

VT C-E switch

2 way composite switch

SpiDer

Spider can talk to hardware, including the NetMux for switching things to net & stream.

Sceduling

Monitor Rack

A description of the layout of what each of the 18 monitors usually displays.

Camera / Rifle-Mic

After many problems with using the rifle mic with Sony HDV and Canon DV cameras, this page has been created.

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