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Pictures of the Strobe Signals |
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Bild 1:
Signals at J1 and J2 pin 1 to 9. The picture shows a high-signal that has low-pulses. The second pulse shows the start of the second sequence. The high-level between the two pulses has little steps. This shows the other 15 pulses. |
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Bild 2:
After the NOR-Gates U1 - U4 the strobes are inverted. The NOR-Gates receive their inhibit signal from the Blanking signal of the pinball CPU. |
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Bild 3:
Shows the strobes after U5 and U6. As you can see the signals are inverted again. |
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Bild 4:
Shows the strobes direct before they enter the bases of the transistors T1 - T16. |
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Bild 5:
Shows the strobes after the collectors of transistors T1 - T16 directly before they enter the LEDs. |
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Pictures of the segment data |
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Bild 6:
Shows the different information which comes from the pinball CPU board. They enter the PinLED Display board at J4 and J5. It is a composition of different pulses which control the single segments. |
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Bild 7.
After the inverters U7 - U12 the signal is inverted. |
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Bild 8:
Shows the signals after the drivers U13 - U16. |
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Bild 9:
Shows the signals after the resistors direct before they enter the LEDs. |