Electrical Engineering Stack Exchange
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Questions tagged [manchester-coding]

32 questions
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2 answers

Effects of impedance matching between 50 and 75 Ohm coaxial cables for 10 Mbit/s, Manchester-coded signals (20 MHz)

TL,DR: This is quite a bunch of text because I have included plenty of background info. However, there will finally be a good, and precise question: Should I use an impedance matching network when connecting cables of different impedance such as…
zebonaut
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What is the advantage of differential Manchester

I can see the advantage of Manchester code over NRZ: you get clock and data in one signal combined. But what does differential Manchester add to that?
amadeus
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6 answers

Manchester encoding

As I understand, in Manchester coding known bits are sent before start a transferring. But I didn't understand why - One of the main benefits of Manchester, is the fact that sync between the two side is easier. So why I need to send bits before the…
Adan Sh
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Manchester Decoding

Is a Phase Locked Loop compulsory for decoding Manchester encoded data? Is the PLL used so that Manchester encoding supports different data rates? useful links: http://www.electronicspoint.com/manchester-decoder-t68939.html, …
Mike George
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How to analyze/decode a Manchester encoding?

I have a barcode scanner working on 433Mhz (FSK). Since this is a relatively old product and the PC software is not working with Windows 10's and I can't use the SDK anymore. I, therefore, have decided to make my own receiver hardware and a PC…
Sener
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Why does timing change in dataframe using Manchester encoding

I have successfully received a couple data frames from an RF transmitter. I compared couple consecutive frames and the timing deviation between them is marginal, so I am convinced it is reasonably accurate to a 50µs resolution. I think it is using…
jippie
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Decoding waveform from RFID 125 khz reader

I've recently bought a chinese reader for EM4100 and compatible cards: it has an USB to UART converter to get commands from the software and an STM8S10 MCU responsible for the RFID comunication. I would like to record the waveform and to read the…
sguerrini97
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how to design an electronic circuit that convert a binary sequence to Manchester code

I want to design an electronic circuit that convert a binary signal to Manchester code. I have already put a XOR operator between the binary signal and the clock, I got the allure of Manchester but the the low level is coded with 0 V and I want it…
Abdelaziz Mokhnache
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Low cost UART over fibre

I need to extend an existing 5V UART over fibre for isolation reasons. Digital isolators / optos are no good as I need more isolation than that (0.1pF coupling max. from one side to the other). UART content is fixed due to backward compatibility…
stefandz
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Circuit for decoding Manchester encoding (retrieving clock and data) - how to create delay circuit

This video describes a decoder circuit for Manchester encoded signals, and the same circuit is also mentioned in this article. I can understand the circuit, and I'm interested in what different approaches exist for creating the delay in the delay…
BipedalJoe
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Hardware/software needed to decode Differential Manchester?

I have a differential manchester encoded 0 to 5v data stream at 62500bps. What hardware do I need to get this into something I can work with, ie arduino, pi, etc? I have searched for chips/eval boards on digikey and can't find anything that can…
David Sindar
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Differential Manchester Encoding

I am trying to understand Differential Manchester Encoding. The way I understand it is that the representation depends on the previous bit. If the previous bit was 0 there is a transition, but if it was one there is no transition. Given that, would…
Rick
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FSM derivation for a digital Manchester encoder

I am looking at an FSM example in a digital design literature book where the idea is to create a simple FSM using a Moore machine for a Manchester encoder. The FSM takes two inputs. d is the data signal, and v is the data valid signal. d is the…
Theo
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signal types and wire types

I am trying to understand the selection criterion for choosing between a signal types and wire type out of the following: Signal types: Gnd reference uni-polar signal Gnd reference bi-polar signal Differential signal Balanced signal Encoded signal…
scico111
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What kind of serial encoding is this?

I'm involved in some reverse engineering of a device I need to interface with. With what little I know, and being able to capture a single data transmission, I think I've narrowed down the encoding method. I suspect it might be a custom or obscure…
Sparky961
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