OK - I've gone through UD6-UD9 pins 9, 10 and 11 (DA0-DA2) and got some varying results.
UD6
If I use Pin 20 on UD9, I get waves of c. 2V on pin 9, 4V pin 10 and 4V pin11.
However, if I use Pin 20 on UD7, the waves on UD9 definitely go up to c. 4V, 5V and 5V
UD7 and 8 are giving me consistent waves of 3v, 5V (spiking to 6) and 5v (spiking to 6) on pins 9, 10 and 11 respectively.
UD9 will only give me square waves if I use pin 20 on another IC (eg UD8) - the same voltages as UD7 and 8. However, if I use pin 20 on UD9, I get waves but they are very much not square ones like the others.
Would a document with some graphs be more helpful?
Colin.
Quote:
Originally Posted by SiriusHardware
Resistances certainly look more uniform now although DA0 is a tad lower than the rest in both directiions.
What about DA0 and DA2 compared to the others on scope?
DA0 still half the size of the others?
DA2 still flatlined?
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