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klausdieterborrmann Dear jluyt123 Regarding question 1: The supplied second card (U2) is plugged into the slot on the motherboard at 90 degrees. So that this is not inserted too deeply, I use two wire ends, which are inserted into the first and last hole of the second circuit board above the circuit board. Solder the connections in the middle and then the last ones on the front. Then I solder the last two on the back of the second board. To question 2: If you look at the side of the second board where you see the IC chip (black circle), the connections are from left to right as follows: 1 - SEL2 2 - VSS 3 - irrelevant 4 - OUT 5 - SEL1 7 - VDD 8 - OSC1 (top edge) 9 - OSC2 (top edge) The power connections mean VSS = + pole VDD = - pole, both connections are marked on the main board. The power supply is: 4.5V - 5V I hope to have answered your questions.

2021-03-17 10:02:20 Utile (0)
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klausdieterborrmann Jumper 1 ist zum Umschalten der Messarten. Zum Messen einer externen Frequenz muss der J1 so gesteckt sein, dass die beiden unteren Stifte überbrückt sind. Das Eingangssignal darf 30V nicht überschreiten, sonst wird das Gerät beschädigt. Um einen unbekannten Quarz (Kristal) zu messen, stecken Sie den J1 um, das heisst er muss die oberen beiden Stifte überbrücken. Ich hoffe ihnen damit geholfen zu haben.

2020-11-03 09:00:50 Utile (2)
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