9 Pin Null Modem Cable Pinout

This connector regardless what you call it is used for a variety of purposes.

9 pin null modem cable pinout.

Db 9 pin db 9 pin. Null modem is a communication method to directly connect two dtes computer terminal printer etc using an rs 232 serial cable the name stems from the historical use of rs 232 cables to connect two teleprinter devices or two modems in order to communicate with one another. Use this cable between two dte devices for instance two computers. The startech mxt100ff is an example of a straight through cable.

A standard null modem cable is the solution. The e refers to the shell size. Using com ports you can set up communication between two computers. A null modem or crossover cable is used to connect to dte devices together.

Pinout and signals for building a serial rs232 nullmodem cable use this cable between two dte data terminal equipment devices for instance two computers. Null modem communication refers to using a crossed over rs 232 cable to connect the teleprinters directly to one. D sub 1 d sub 2. Here s a good set of figures for db 9 male and female connectors as viewed from the pin side not the solder side.

Pinout of null modem cables and layout of 9 pin d sub female connector and 25 pin d sub female connectorde 9 to de 9 de 9 to de 25 cables. There are a lot of details to consider when arranging the pins between male and female connectors on a serial cable or serial device. The null modem s universal cable supports both 9 and 25 pin connectors enabling you to transmit data between your two machines. Use this cable to connect two devices equipped with serial rs 232 interface.

The two main things to be concerned about are the pinout and the gender. If you re using a serial cable or null modem cable for local serial connectivity or for modem replacement you might consider looking at the traversix network connectivity solutions. Null modem cable with handshake. Simple null modem cable.

9 pin d sub female to computer 2. The de 9 d sub 9 pin connector is often mistakenly referred to as the db 9 connector. Null modem cable db9 db9. 9 pin d sub female to computer 1.

Db 25 pin fg frame ground 1. Null modem cable pinouts. For this to work the transmit txd pin of one device needs to be connected to the receive rxd pin of the other device and vice versa. A db 25 connector has a b size shell but the common nine pin connector is smaller and has an e size shell.

You can use. Db9 pin d sub female to pc1. This cable may be used to connect any rs 232 equipped device to computer connect two computers via com serial port and so on.