USBG-4X232FTDI.jpg' alt='Ftdi Usb To Db9 Serial Port Adapter Cable' title='Ftdi Usb To Db9 Serial Port Adapter Cable' />USB to Serial adaptor Electronics Forums. Tim Williams lt wrote in messagenews l. I have a Kingwin adapter cable USB shield connects to braided cable shield. Not sure if cable shield goes anywhere at the other end. No apparent electrical connection. Pin 5 lt 1. USB ground pin I measure 0 ohms to computer chassis once plugged in. DE 9 shield not connected. Voltage levels meet RS 2. USB to Serial Converters For computers without native serial ports available, Optec recommends the FTDI chipset converters see our 4port and single port USBto. Raspberry Pi unit Serial port in your PC or USB to serial adapter MAX3232CPE or similar RS232 to 3. V logic level transceiver 5 x 0. F capacitors I used. RS232 RS485 RS422 TTL USB Serial Fiber Optic Converters, Ethernet Media Converters, 5year warranty, 30day money back satisfaction guarantee Same day express shipping Buy BTECH PC03 FTDI Genuine USB Programming Cable for BTECH, BaoFeng, Kenwood, and AnyTone Radio TwoWay Radios Amazon. FREE DELIVERY possible on eligible. Compact Mini USB Serial Adapter, Great for Laptop users no bulky cabling. USB Serial Adapter has LED indicators For Power TX and RX, DB9 Male connector. SOIC to DIP Programming Adapter, 150 mil body, 0. SOIC to DIP Programming Adapter, 208 mil body, 0. SOIC to DIP Programming Adapter, 50mil. ICUSB232FTN.C.jpg' alt='Ftdi Usb To Db9 Serial Port Adapter Cable' title='Ftdi Usb To Db9 Serial Port Adapter Cable' />V, withsome ripple from the charge pump evident. Not good for a really longcable where the original 1. V would be better suited, but certainlylegitimate, not some phony 3 0. V compatible interface. Chip is Prolific probably PL2. TTLLVCMOS interface. Pokemon Liquid Crystal Phone'>Pokemon Liquid Crystal Phone. Dontknow what RS 2. MAXx. 23. 2 clone. Works well in my limited experiments seems to have sufficient baud rateprecision and selection range. Doesnt seem to transmit framescontinuously, but that may be a limitation of the programs sendingcapability, or the drivers or USB. Does correctly recieve continuousframes i. Tim Seven Transistor Labs. Electrical Engineering Consultation. HTB1MquWOpXXXXc_XXXXq6xXFXXXp/USB2-0-USB-2-0-to-RS485-RS-485-RS422-RS-422-DB9-COM-Serial-Port.jpg_640x640.jpg' alt='Ftdi Usb To Db9 Serial Port Adapter Cable' title='Ftdi Usb To Db9 Serial Port Adapter Cable' />FTDI driver for windows OS. FTDI driver Download working FTDI USB Driver Download Linkhttp latest Supported OS Windows 8,7,8. Website http seventransistorlabs. USB to Serial Adapter Wiki. USB to Serial adapter Wiki by Magneto Tech Research. What is a USB to Serial adapter and how is it used How do I choose the right model and how do I connect itWhat to look for when shopping for a USB to Serial adapter. Here are answers to all your basic and possible advanced USB to Serial questions in an easily understandable language. What is a USB to Serial adapter The USB to Serial adapter comes in many models, sizes and shapes, here are a few examples What are the differences between USB to Serial adaptersSo what is the main differences between these USB to serial adapters The most obvious difference is the physical size of the adapters this is mostly due to the number of ports the particular adapter has. For example a one port adapter is much smaller than a four port adapter. However mostly the physical size of the USB to serial adapter is actually the least important feature, more importantly are the electrical features of the adapter. More about that later. Other differences are that some adapters has a female DB9 port instead of a male DB9 serial port. Some have thumb screws for attaching the DB9 connector to a device while others have screw nuts for connecting devices. Most USB to Serial adapters has a DB9 connector however some adapters has a screw terminal header instead, this applies to industrial adapters and converters in particular. One of our favorite features of the USB to serial adapter is the type of adapter which have indication lights for the TX and RX communication lines. This is a very helpful feature when troubleshooting. Okay, but how about the inside of the adapter Well, the circuitry inside the adapter is even more important that the outside. The main parts of the inside circuitry consists of two processor chips a USB to Serial processor chip, this chip converts all the USB data to serial data and all the serial data to USB data, and a Serial driver chip, this chip provides the power for your the device connected to the serial port of the adapter it kind of amplifies the signals. We highly recommend a USB to serial adapter designed with a. USB processor and driver chip. Examples of well known brands are FTDI and Silicon Labs. The seller of the adapter should be able to tell you which processor brand is inside the chip, if they cant tell you, dont buy it. The problem with an unknown or low cost processor and driver ship is that it will most likely cause you more problems when installing the drivers or when trying to communicate with your serial device. The reason is that low cost processor chips are often poorly designed and have incompatible drivers. Interface types. USB to Serial adapters comes in several different variations in regards to interface types. The most commonly used interface type is serial RS2. Other frequently used interfaces are RS4. RS4. 22. Regardless of which interface type the adapter has it usually looks the same, with the one difference that RS2. DB9 connector for connecting to the serial device where as the RS4. RS4. 22 adapters usually have a screw terminal header for connecting a serial device. We will not go into the details of how the RS2. RS4. 85 or RS4. 22 protocol works, but if you are interested in this then there are lots of RS2. RS4. 85 and RS4. 22 information on Wikipedia. How to use a USB to Serial adapter. Before you can start using a you need to install the drivers for the adapter. The drivers are small files programs which makes it possible for your computer to find the adapter and help in converting the data sent and received from your serial device. Usually drivers are available for Windows, Linux and Mac operating systems, however some low cost adapters only have drivers for Windows, which is another reason for selecting a quality USB to Serial adapter. Free Dvd Download Reviewer For Civil Service Exam more. Installing the drivers are easy if you have a good USB to serial adapter, usually you can install the drivers. However, some of the higher level high quality adapters offers an option to install the driver files manually, this can be an advantage it you want to control exactly what is installed. After the drivers has been successfully installed you will be able to find the new virtually created. COM port in your operating systems Device Manager where different parameters for the COM port, such as baud rate and data bits can be configured. A standard RS2. 32 USB to serial converter with a DB9 connector is usually very easy to connect to a serial device, simply connect the DB9 connector to the serial device, the DB9 connectors needs to be female male to be able to connect, and it is an advantage if one of the connectors has thumb screws and the other has nuts. Connection Examples. RS2. 32 interface. Lets take a look at one of the most simple setups using a USB to serial adapter with RS2. This setup simply connects one computer with a serial device by a 1 port USB to serial adapter. It is recommended to keep the USB cable less than 5 feet to maintain reliable data transfers. Multiport RS2. 32 interface Below is a typical setup of a 4 port USB to serial converter with RS2. With this setup there are four virtual COM ports visible in Device Manager within the computers operating system. The COM port number can be individually changed and several parameters for each COM port can be configured. RS4. 85 interface As mentioned earlier, the USB to RS4. RS4. 85 or RS4. 22 interface usually has a screw terminal header instead of a DB9 connector for connecting the communication wires. Below is an example of a setup using RS4. One of the advantages of using a RS4. For this reason RS4. RS2. 32 is usually only use as a converter between two types of data signals. Port powered and externally powered adapters. In regards to powering the USB to Serial adapter, there are two ways of doing this. Usually a single port USB to serial adapter is powered by the USB port, even many four port converters are powered by the USB port. This is the most convenient way because it does not require any additional power cables. However, most adapters with more than four serial ports are powered by an external power supply. The reason is that a standard USB port does not have sufficient power to provide power for multi port adapters. Also, most isolated industrial grade adapter is using an external power supply due to its isolation requirements. Optical isolated adapters. Some USB to Serial adapters can be either non isolated or isolated. An isolated USB to Serial adapter have optocouplers and TVS Transient Voltage Suppressors separating the data lines inside the unit to prevent high voltage spikes, surges, ground loops and noise from damaging and interfering with your computer or the device you have connected to the serial port. Some USB to Serial adapters even have the external power supply isolated from the rest of the adapter, this provides additional protection and reliability. Usually isolated adapters and converters are used only if the user wants to additionally protect the device or equipment connected to the network in case the equipment is of high value, or if there are reasons to suspect high voltage spikes or similar in the network. A non isolated converter usually only has high speed surge suppressor at each communication line as a simple protection against static electricity and low voltage spikes which is sufficient for general use. How to choose the right USB to Serial adapter. When shopping for a USB to RS2.