Hi,
I'm still new on this forum.
I'm trying to transmit 8-bits data from A location to B location which is 20 meters long. Do i need to do any enhancement design on both A and B location so the data can able to transmit more stable condition?
I'm using 8052 MCU. The MCU port will connected it to 74HC573 to pull out the 8-bits data at location-A then transmint the data to location-B (location-B most of that is TTL device, the location-A 8-bits data will link it to 74HC259 and some other logic device. The HC259 output will be connected to x8 LEDs). Between location A and B will be very long distance, 20 Meter. I just plan to use parallel method to transmit the data. I know serial method can solve this problem. I just want to take experience on it. Hope can use parallel method to solve it.
I already did the design but is on testing board. But haven't test it in long distance.
1) How to solve the transmission line effects?
2) the switching rate is not so frequent. If can turn ON the output LED within 1sec will be nice. Is it possible to do that?
3) driver impedance - using normal TTL driver HC573 (data output driver), HC259(input device), 4077, HC153, HC00 and so on..
5) Normal parallel port 25-pin connector and cable.
What other issue i have to consider? For your experience this design able to achieve? Please advice...
Thank you.
I'm still new on this forum.
I'm trying to transmit 8-bits data from A location to B location which is 20 meters long. Do i need to do any enhancement design on both A and B location so the data can able to transmit more stable condition?
I'm using 8052 MCU. The MCU port will connected it to 74HC573 to pull out the 8-bits data at location-A then transmint the data to location-B (location-B most of that is TTL device, the location-A 8-bits data will link it to 74HC259 and some other logic device. The HC259 output will be connected to x8 LEDs). Between location A and B will be very long distance, 20 Meter. I just plan to use parallel method to transmit the data. I know serial method can solve this problem. I just want to take experience on it. Hope can use parallel method to solve it.
I already did the design but is on testing board. But haven't test it in long distance.
1) How to solve the transmission line effects?
2) the switching rate is not so frequent. If can turn ON the output LED within 1sec will be nice. Is it possible to do that?
3) driver impedance - using normal TTL driver HC573 (data output driver), HC259(input device), 4077, HC153, HC00 and so on..
5) Normal parallel port 25-pin connector and cable.
What other issue i have to consider? For your experience this design able to achieve? Please advice...
Thank you.
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