Composite to Scart - Revision history

Marks Polakovs at 12:58, 6 August 2023

2023-08-06T12:58:21Z

← Older revision		Revision as of 12:58, 6 August 2023
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			{{Outofdate}}
	{{OldKit\|Want to convert from one format we don't use to another? If you're not the [[hist:Heads of Archives\|Head of Archives]] you probably won't find anything useful here.}}		{{OldKit\|Want to convert from one format we don't use to another? If you're not the [[hist:Heads of Archives\|Head of Archives]] you probably won't find anything useful here.}}
	{{HDNO}}		{{HDNO}}

Marks Polakovs: 7 revisions imported: Imported from docswiki

2023-08-06T12:45:16Z

7 revisions imported: Imported from docswiki

← Older revision	Revision as of 12:45, 6 August 2023
(No difference)

docs>Jw2199 at 16:46, 3 August 2021

2021-08-03T16:46:13Z

← Older revision		Revision as of 16:46, 3 August 2021
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			{{OldKit\|Want to convert from one format we don't use to another? If you're not the [[hist:Heads of Archives\|Head of Archives]] you probably won't find anything useful here.}}
	{{HDNO}}		{{HDNO}}
	These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This instructs the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.		These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This instructs the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.

Connor.sanders at 09:02, 23 July 2021

2021-07-23T09:02:31Z

← Older revision		Revision as of 09:02, 23 July 2021
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	20 = Vid Sig		20 = Vid Sig

	~~[[Category:Technical]]~~
	[[Category:Vision Path]]		[[Category:Vision Path]]
	[[Category:Home-Made]]		[[Category:Home-Made]]

docs>Robert.walker at 13:48, 11 July 2013

2013-07-11T13:48:12Z

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			{{HDNO}}
	These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This instructs the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.		These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This instructs the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.

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	[[Category:Technical]]		[[Category:Technical]]
	[[Category:Vision Path]]		[[Category:Vision Path]]
			[[Category:Home-Made]]

docs>Robert.walker at 20:11, 9 July 2013

2013-07-09T20:11:09Z

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	[[Category:Technical]]		[[Category:Technical]]
			[[Category:Vision Path]]

docs>Robert.walker at 20:09, 9 July 2013

2013-07-09T20:09:27Z

← Older revision		Revision as of 20:09, 9 July 2013
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	20 = Vid Sig		20 = Vid Sig

			[[Category:Technical]]

docs>Malcolm.chambers: subtle corrections

2009-12-24T16:50:02Z

subtle corrections

← Older revision		Revision as of 16:50, 24 December 2009
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	These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This ~~instruct~~ the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.		These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This instructs the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.

	The 12V input is such that the outside should be deemed Ground, and the centre should carry +12V.		The 12V input is such that the outside should be deemed Ground, and the centre should carry +12V.
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	The pin assignments of the four pins on the Scart plugs are as follows (I think):		The pin assignments of the four pins on the Scart plugs are as follows (I think):

	8 = +12v,		8 = +12v,

docs>Malcolm.chambers: Initial description

2009-12-24T16:48:18Z

Initial description

New page

These are not quite as simple as they first appear. They send the composite video signal of up to four inputs to the correct pins of a corresponding Scart plug. ''Additionally'' they send 12 volts (from the DC input) to the appropriate pin of the Scart plug. This instruct the television to switch to its Scart input and tells it the Scart input is in 4:3 resolution. On some televisions it automatically switches the television 'ON' out of standby mode.

The 12V input is such that the outside should be deemed Ground, and the centre should carry +12V.

The grounds of each of the four composite inputs are not connected together, nor to the 12V ground, as either is pointless and silly (groundloops?).

The pin assignments of the four pins on the four-pin XLR sockets are as follows:

1 = 12V Gnd,

2 = Vid Gnd,

3 = Vid Sig,

4 = +12v

Note: the power is such that the 0V and +12V are the same as for our cameras, so the cameras shouldn't be damaged if somebody foolishly (or perhaps as part of a desperate bodge) plugs the camera into the box - provided the power supply at the DC plug is the correct polarity. However, if the mains to 12V supply used isn't powerful enough the camera will probably quickly turn itself off.

The pin assignments of the four pins on the Scart plugs are as follows (I think):
8 = +12v,

21(outer metal) = 12V Gnd,

17 = Vid Gnd,

20 = Vid Sig