What is serial cable used for?

A serial cable is a cable used to transfer information between two devices using a serial communication protocol. The form of connectors depends on the particular serial port used. A cable wired for connecting two DTEs directly is known as a null modem cable.

Also to know is, what is serial port used for?

A serial port is a general-purpose interface that can be used for almost any type of device, including modems, mice, and printers (although most printers are connected to a parallel port).

Secondly, what is an RS 232 cable used for? The current version of the standard is TIA-232-F Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange, issued in 1997. The RS-232 standard had been commonly used in computer serial ports and is still widely used in industrial communication devices.

In this manner, what is a serial DCE cable?

DTE stands for Data Terminal Equipment, and DCE stands for Data Communications Equipment. DTE is typically either a dumb terminal or the serial port on a computer/workstation. DCE is typically a modem, DSU/CSU, or other piece of data communications equipment, hence the names.

What type of cable is most commonly used to terminate a serial connection to a modem?

The null modem cable (crossover cable) should be used when interfacing between a serial port and a DTE device. To enable handshaking between the two devices, the Request to Send (RTS) pin of one device must be connected to the Clear to Send (CTS) pin of the other device.

39 Related Question Answers Found

Is USB a serial port?

A Serial port is an asynchronous port on the computer used to connect devices serially to the computer. A USB is a standard cable connection interface between personal computers and electronic devices of consumer. USB allows the USB devices to be connected to each other and transfer digital data over the cable.

Is USB serial or parallel?

USB communication is a serial bus. USB sends data in serial mode i.e. the parallel data is serialized before sends and de-serialized after receiving.

What do you mean by serial port?

In computing, a serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. Throughout most of the history of personal computers, data was transferred through serial ports to devices such as modems, terminals, and various peripherals.

Is Ethernet serial communication?

Ethernet (IEEE 802.3) is the most broadly used network protocol these days. It is also a serial communication standard. Since it is used in so many modern networks, the question is why hasn't it replaced RS-485 and its other variations (RS-232, RS-422).

What is the maximum length of a serial cable?

50 feet

How many pins are in a serial port?

How does a serial connection work?

Serial ports lower cable costs and make cables smaller. Before each byte of data, a serial port sends a start bit, which is a single bit with a value of 0. After each byte of data, it sends a stop bit to signal that the byte is complete. It may also send a parity bit.

Is a router a DCE?

The router is the DTE (Data Terminal Equipment) and the external device is the DCE (Data Communications Equipment), where the DCE provides the clocking.

What is null modem cable vs serial cable?

Null modem, also called crossover, is a term associated with serial (RS-232) cables. A standard serial cable, also called an AT cable, has the wires inside the cable running straight through. Take a DB9 cable as an example. Pin 1 on one end of the cable would be connected to Pin 1 on the other end.

What does a DCE do?

Data communications equipment (DCE) refers to computer hardware devices used to establish, maintain and terminate communication network sessions between a data source and its destination. DCE is connected to the data terminal equipment (DTE) and data transmission circuit (DTC) to convert transmission signals.

What is a DCE interface?

DCE is a function of the cable pinout. The DCE end of the cable usually has a set of looped or grounded pins that tell the cable type and interface clocking specs. Your sim either has a bad diagram or the other side is supposed to be DCE.

Why clock rate is used in router?

Clock rate is to be used in DCE in serial link to configure the clock speed for the link. When connecting two routers together with a serial cable, one of the routers needs to host the DCE (Data Communications Equipment) side of the cable, and the other will host the DTE (Date Terminal Equipment) side.

What is a DCE connection?

A data circuit-terminating equipment (DCE) is a device that sits between the data terminal equipment (DTE) and a data transmission circuit. It is also called data communication(s) equipment and data carrier equipment. Usually, the DTE device is the terminal (or computer), and the DCE is a modem.

What is an example of a DCE?

Data Communications Equipment, or DCE, is any device that supports data transmission over a serial telecommunications link. An example of a DCE is an analog modem, which provides a connection between a computer (the DTE) and the local loop POTS phone line (the serial transmission line).

Is null modem cable straight through?

A null modem cable is a RS-232 serial cable where the transmit and receive lines are crosslinked. In some cables there are also handshake lines crosslinked. In many situations a straight-through serial cable is used, together with a null modem adapter. The adapter contains the necessary crosslinks between the signals.

What is Modem explain?

A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between these two forms.

Does rs232 need a ground?

1 Answer. You need to wire the signal ground (Pin 5 on DB-9 RS232) always. Using only TX and RX is simply not a valid wiring IMHO. If this causes a ground loops between two devices, or unwanted potential shifts, using fully opto-isolated RS232 as mentioned earlier is the only correct way.