Description

• For sale: new 6 feet RS232 Null Modem cable, DB9 female to DB9 female, in sealed plastic bag.

• Our line of null modem serial cables allows two DTE or DCE devices to communicate with no conflict in data transmission. The transmit and receive signals are crossed to ensure proper data transmission. 

• Each null modem cable is designed with a rugged, overmolded construction that provides added strain relief and a solid connection each time.

• The cable is foil shielded for EMI/RFI protection from surrounding office equipment and flourescent lights. 

• Thumbscrew connectors provide a fast, easy connection every time.

Specifications

• Color : Beige

• Length : 6.00 Foot

• Weight : 0.260 LB

General information

The null modem cable has the transmit pin on side 1 connected to the receive pin on side 2, and receive pin on side 1 connected to transmit pin of side 2.

The null modem cable is frequently called a crossover cable. It is used to allow two serial Data Terminal Equipment (DTE) devices to communicate with each other without using a modem or a Data Communications Equipment (DCE) device in between. For this to happen, the Transmit (TXD) pin of one device needs to be connected to the Receive (RXD) pin of the other 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. Because these pins are "crossed" on the two cable terminals, the name crossover cable is used.