comes at the cost of many treatments as applied to electronic video signal that the audio signal. It is, indeed, mix the following SECAM standards, and then use this mixture to modulate a mini-UHF transmitter. For its part, the TV show that will then perform the inverse operations so as to restore its image. This dual treatment, a total useless except to use the plug directly from the TV antenna, tends deteriorate the quality of the recording. This loss of quality is also more pronounced if the facility is connected to a wired network to receive many channels or a distribution group carrying electrical signals of a magnitude often high. In the latter case, the video channel has often find it difficult to find a free frequency range, or simply not to be covered by other programs. Problems such as streaks or bad color quality can then assign the image from the tape. The solution to these problems is disappearing using a VCR-TV association totally independent of the aerial plug. Scart plug TV gives us that opportunity, and I therefore propose to make a patch cord to use it. All VCRs today, in addition to the plug connector to Canal Plus in their decoder has two outputs equipped with small round pin. One for video and one audio. It is the latter that we will use to send signals from the VCR to the TV. This will be done by simply wiring RCA male (VCR side) details on SCART (TV side) using shielded wire. Note that we also equipped our cord with a small 9-volt battery. This allows us to mount compatible with older TVs do not include a position called broadcasting. On this type of device, the commissioning of the SCART plug is controlled effectively by applying a voltage to pin number 8 of the latter. A switch, mounted on our assembly will thus activate or stop the VCR on whatever channel watched the departure. Note that the power consumption for this order is extremely low, the life of the battery is very high. Recall that, if the TV has an audio-visual position, it will be useless to make this part of the assembly.
wiring of this cable is very simple: it is, in fact, essentially connecting son. However, we will use a small plate to make wiring connections between own son shielded from the RCA, one having 4 drivers with a tank from the SCART plug, and the son of the clip connecting the battery. The toggle switch on the VCR will be soldered in series with the more-9-volt and resistance will limit the current applied to the control mode switch Scart.
For my part, j'ait with this montage of a plastic housing. The latter is especially useful if the use of the battery is essential, and it will set the switch. Otherwise, the plate can simply be surrounded by an adhesive insulation for electrical wire.
Testing and commissioning of this cable is also very simple. SCART and RCA plugs, taking care to follow video and sound, will be connected. Then the TV and VCR will be turned on. If the installation works without batteries, the audiovisual mode will selected, we will check an image and sound from playing a cassette are properly returned. In the case of a TV requiring the use of the stack, we must ensure that to do well on the switch causes the switching between the receipt of a string and reading the tape. If this is the case, the assembly is ready for use.
wiring diagram - a nomenclature
RCA black
a red RCA plug a SCART
1 m Scart plug wire
1 m single conductor shielded wire
1 plate wiring R1 = 4.7 kilohms (yellow, purple, red, gold) 1 switch
a 9 volt battery clip to a 9 volt battery
a plastic box for VCR. For
son shielded for RCA, we recommend using a wire with two independent and shields, if possible, do not pass under a jacket overall. This will provide a cleaner wiring plugs. This type of cabling is available from most retailers of electronic equipment and looks much over extension cords. This will make it possible to separate the shield wire for the video of the sound. The use of wire comprising a single two-conductor shielded useful is prohibited. The sound, in particular, might be tainted by snoring and the image of dark areas related to his fugitive.
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