Questions tagged [duplex]
The duplex tag has no usage guidance.
16
questions
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1answer
38 views
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 ...
0
votes
1answer
54 views
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 ...
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2answers
98 views
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 ...
0
votes
1answer
140 views
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 ...
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2answers
108 views
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 ...
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3answers
530 views
RS422 Full-Duplex Cable Shielding
I need to interface two PCBs via RS422 (250kbps) in full-duplex mode (4-wire, 2-twisted pairs 100ft cable). This system will operate in a noisy (CNC) industrial environment, ie, industrial controls ...
2
votes
1answer
640 views
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 ...
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1answer
3k views
What is the difference between full duplex and dual simplex? [closed]
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 ...
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1answer
225 views
Fastest working Wireless communication method between two devices
I attempted to ask this question on the network engineering forum but the mods there think superuser.com is a better place for it, but when I posted there, they think here is the best place for this ...
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2answers
1k views
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 ...
3
votes
2answers
2k views
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 ...
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1answer
34 views
Noise floor of a FM duplex
If these 2 signals, that form this duplex, have ranges of 15-30 [kHz] and 30-45 [kHz] using:
\$NoiseFloor_{dBm} =10\log _{10}(k\times T_{0}\times 1000)+NF+10\log _{10}(BW)\$
and if \$K,T,F\$ and \$\...
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1answer
205 views
bi-directional half-duplex communication between two AT89C2051's micros without serial port
I'm trying to do a direct two-way communication between two AT89C2051 microcontrollers with only two GPIO pins so that I have other GPIO lines free for other tasks.
P3.7 is the data wire, and P3.2 (...
0
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1answer
341 views
Simplex and Duplex are types of ______?
When describing telecommunication systems, it is often important to note whether it is a simplex, half-duplex, or a full duplex communication.
In trying to explain this variable or attribute, I ...
0
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1answer
481 views
SPI Half-Duplex for the Holtic HI-3593 ARINC429 IC
I am having some problem understanding half duplex SPI. My understanding of SPI is when you send a byte you read the garbage byte, and if you want to read a value you send a dummy byte to read the ...
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votes
3answers
19k views
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 ...
