Recorded signal paths
The following signal path can deviate from the voltage values. The sequence should, however, match at the marked positions.
For the CVBS signal, the color information of the colors green, red and blue are transmitted across a single cable. The signal path has three important points that are independent of the image transmitted at that moment. This is why these can be used for measurement
For measurement, the following voltage differences must be examined.
Difference |
With adapter |
Without adapter |
|---|---|---|
Point 1, Point 2 |
0.4 V |
0.8 V |
Point 2, Point 3 |
0.3 V |
0.6 V |
In the case of measurement without adapter, the second Control module (SG2) is disconnected. Upper circuit. For this measurement, the signal level is only measured via the resistance R. This is why a measurement without adapter leads to a double signal level.
In the case of measurement with adapter, the second Control module (SG2) remains connected. The signal level is then measured via the parallel circuit of resistances R and R2. Lower circuit.
