Serial cable db9 rs232

Hello, guest Please sign in or create an account. Site Search:. Shop Products. Live Chat Tech Support. Add Cart. Out Of Stock , available on August 8 th. Add To Cart View Cart. Our CMG-rated line was specifically engineered to meet this requirement while overcoming common challenges faced by installers in these environments.

Low-Profile connectors 1. The fully molded cable design delivers excellent strain relief, while connector thumbscrews provide a quick and easy connection every time.

The transmit and receive signals are crossed to ensure proper data transmission. Product Certifications Tap an icon to learn more:. Product Specifications Color : Black Length : 3. Customer Reviews. Rated 5 out of 5 by SerialCable from High quality and fast shipping Very high quality cable. Ends are some of the smallest available. Date published: I just want to confirm the pinouts on this cable.

In the description it mentions that the transmit and receive pins are crossed for proper communication. What is the current level of RoHS Compliance for your part number ? The whole assembly is not UL, however the bulk cable is and is marked accordingly.

Answered by: Thomas. Despite the shortcomings and the technology advancements, RS interfaces are still very much in use with large industrial machines, networking equipment and scientific instruments where point to point, low speed wired data connections is sufficient. A PC serial port interface is single ended.

This means that you can only connect two devices using a RS serial cable. The data that is transferred between these two devices is transferred at a rate less than 20 kbps. RS allows for full-duplex communication — this means that both devices can interface with each other simultaneously. A common ground between the computer and the connected serial device is mandatory.

This is represented by voltage levels defined by the RS protocol. With RS, hot-plugging or hot-swapping is not supported, though it is sometimes possible to plug in a serial device and it will work while the computer is running. With current technology, only a 9-pin connector is in use with most personal computers. A RS transmission begins with a start bit. A start bit notifies the receiving computer of the incoming transmission. The data packets consist of 7 or 8 bit words.

The data bits then follow the start bit on a LSB basis least significant bit - this is the bit with the lowest numerical value. A parity bit would generally follow the data, and then the transmission is ended with a stop bit. A serial mouse comprises sensors, mouse controller, communication link, data interface, driver and software.

Movement of the mouse as well as button clicks is detected by the sensors. The mouse controller takes note of the current mouse position as well as the state of the various sensors. It is the mouse driver that is installed on the computer that receives the data packet and decodes it, then executing the appropriate action based on the instructions received.

A standard mouse expects a RSC output signal with an approximate 12V level as its input signal. The RSC port will have a number of output lines from which the mouse can take current about 10mA. The data being sent must be at a level that can be understood by the receiver chip. Negative supply for the transmitter is taken from the TD pin. A standard serial mouse takes 10 mA total current operating at a voltage range between 6 and 15 volts. The data is sent using standard asynchronous RSC serial format:.

The negative pulse width is at least ms. This is a cold boot, after which the RTS line will be set to negative. Here is the layout and function of the 9 pins:.