Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [duplex]

21 questions
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3 answers

What is the difference between full duplex and dual simplex?

What is the difference between full duplex and dual simplex? I can not really distinguish the difference. Is it the fact that in full duplex, data can be exchanged simultaneously in both channels while in dual simplex, it's only one at the time? PCI…
MysteryGuy
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Does the Bluetooth protocol inherently support bidirectional data transfer?

Bluetooth is used for a lot of devices that send data in one direction: keyboards, mice, headphones. If it was designed for that, I would think that it was originally specified to only send data in one direction. Is that true? Note that I am not…
user56384
2
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5 answers

Full-duplex communication between multiple microcontrollers in an enclosed system

I plan on creating a system with multiple microcontrollers which need to communicate with one another. All the microcontrollers will be placed inside a single enclosure, so no need for long distance solutions. What I am looking for is full-duplex…
Nicu Baciu
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1 answer

Transmitter and Receiver antennas in mobile phones

I understand that in old cellular systems where FDD were employed, we used to have same antenna at the mobile phone (User equipment) for transmission and reception.Moreover, a duplexer was used to separate them. In modern cellular systems (Say, 4G…
wanderer
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Is the communication between the USB or PS/2 keyboard and the computer simplex, duplex or half-duplex (unidirectional or bidirectional)?

I am curious to know if the communication between the computer and keyboards is unidirectional or bidirectinal. Until a few days ago i thought the communication is unidirectional because only the keyboard sends data to the computer and the computer…
yoyo_fun
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Uart Full Duplex vs Half Duplex

When uC1 wants to talk to uC2 via uart, the Tx of uC1 is connected to Rx of uC2 and vice versa. Half Duplex states that only 1 uC can use the communication line at a time and Full Duplex states that both uC can use the line at the same time. The Tx…
AlphaGoku
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Connecting a half duplex and a full duplex (2 slaves) to a MCU's UART

I need to connect a half duplex part (1 wire) and another full duplex part (2 wire) to the MCU's UART (only one available), the half duplex part (1 wire) will have a baud rate of 9600bps. The MCU is an ATMega128. The slaves will be controlled by the…
sami234
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How do single-optical-fiber bidirectional communications work?

In the past, I have dealt with fiber optic network communication devices that utilize two fibers, RX and TX, each being dedicated to one direction. I was under the impression that two fibers are always required for bidirectional…
Ryan Griggs
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Half duplex connection with a full duplex cevice

I have a sensor that I want to use with Modbus RTU and am not sure if I can use half duplex or if I need to use full duplex. I would also like to get some suggestions how to read from it with my laptop (USB.) Not the technical part but maybe a…
Moritz Pfennig
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Inverting Pairs in Full Duplex RS485

The following is the Full Duplex configuration for a Maxim 3292 RS-485 transceiver module. It is possible to invert the polarity of the pairs, lets say, exchange AB by BA and ZY by YZ at the Master end (at the left), without affecting the…
Brethlosze
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Using MAX485 with a full duplex device

I have MAX485 board. MAX485 is a half duplex 485 IC. There are A&B pins. The device which i should communicate it has the following pin diagram. I think this is full-duplex interface. Can i communicate with it using MAX485? Which pins of TEC3000…
Berker Işık
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Is GSM full-duplex?

GSM uses FDD (frequency division duplexing) and provides separate channels for uplink and downlink. I found however, in this link, that the mobile station does not receive and transmit at the same time. Also, in the link, a good explanation is…
NickG
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15 pin VGA configuration

I want to connect a 15 pin vga output from a computer to a TV input. However I do not want any data from the TV sent back to the computer. What I mean is that I do NOT want the TV to be a smart monitor but rather a dumb one. In other words the…
user13111321
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How to convert from 2 data line full duplex to 1 data line half duplex?

I'm trying to design a circuit that can convert from a two wire full duplex (think SPI), with one transmit line and one receive line, to a one wire half duplex (think i2c), with bidirectional communication over the same line, but I'm having no luck.…
T.S
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Lack of 'determinism' in Ethernet bus

While reading this website, I found out tha there is lack of 'determinism' in the Ethernet network bus as compared to some other buses like 1553. What I understand is that Ethernet is a single master full duplex serial data bus. But I cannot…
alt-rose
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