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Serial Protocol:

Network / Bus:

Data Rate:

Number of Ports:

Connector:

Mounting / Form Factor:

Operating Temperature:

Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
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Operating Humidity:

%
Allow up to: overrange/margin
Use the overrange/margin to restrict your search to items whose full-scale range is close to your requirements.
(Overrange/margin requires both 'From' and 'To' values to work.)

Help with Serial Hubs specifications:

General Specifications
   Serial Protocol       
   Your choices are...         
   RS232       RS232 is a popular serial communications standard which provides asynchronous communication capabilities with hardware flow control, software flow control, and parity check. Most gears and instruments with a digital-control interface use RS232. The typical transmission speed for RS232 is 9600 bps at 15 m. 
   RS422       RS422 uses a differential transmission technology and provides high-speed transmissions up to 10 Mbps, and maximum transmission distances up to 1.2 km at 110 kbps. RS422 supports much longer transmission distances than RS232, but with less signal line. Unlike RS423, a serial interface which supports only point-to-point connections, RS422 supports multipoint connections. 
   RS232/422/485       The device has selectable ports. 
   RS485       RS485 is similar to RS232, but uses three-way instead of two-way transmissions. Often, RS485 is used in applications where a single controller needs to control multiple devices (as many as 64). RS485 is an enhanced, backwards-compatible version of RS422 and provides a two-wire bus topology. Although this two-wire bus can be used to establish an inexpensive network, RS485 only defines electronic signal specifications. Users must define the software protocol for two-wire communications by themselves. 
   Other       Other unlisted serial protocols such as I2C (Inter-Integrated Circuit), SPI (Serial Peripheral Interface), Microwire, 1-Wire, etc.  
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Network / Bus      An agreed-upon format for transmitting data between two devices.
   Your choices are...         
   10Base-T       10Base-T uses twisted-pair cables with a maximum length of 100 m. This adaptation of the IEEE 802.3 (Ethernet) standard is also called twisted-pair or twisted-pair Ethernet. 10Base-T cables connect with RJ-45 connectors and are thinner and more flexible than the coaxial cables used with 10Base-2 and 10Base-5. 10Base-T networks operate at 10 Mbps and use baseband-type transmission. 
   10Base-2       10-Base 2 uses 50-ohm coaxial cable (RG-58 A/U) with a maximum length of 185 m. This adaptation of the IEEE 802.3 (Ethernet) standard is also called thinnet. 10-Base 2 cables connect with BNC connectors and are thinner and more flexible than the coaxial cables used with 10Base-5. 10-Base 2 networks operate at 10 Mbps and use baseband-type transmission 
   100Base-T       100Base-T or Fast Ethernet is the 100-Mbps Ethernet specification. Although 100Base-T uses the medium access control (MAC) protocol, different options are used with different transmission media. For example, 100Base-X alternatives use two physical links between nodes. One link is for transmission. The other link is for reception. 
   10/100Base-T       Fiber distributed data interface (FDDI) is a reliable, high-speed backbone for mission-critical and high-traffic networks. FDDI can transport data at a rate of 100 Mbps, and can support up to 500 stations on a single network. FDDI was designed to run through fiber cables, transmitting light pulses to convey information between stations, but can also run on copper using electrical signals. 
   Gigabit Ethernet       Gigabit Ethernet is the high-speed Ethernet standard approved by the IEEE 802.3z Gigabit Task Force in 1996. 
   Fibre Channel       Fibre channel is a high-speed, serial data transfer architecture that uses links of twisted-pair, coaxial, or fiber optic cable. Small computer system interface (SCSI) devices can use fibre channel arbitrated loop (FC-AL), the most popular fiber channel typology. Using optical fiber, FC-AL supports full-duplex data transfer rates of 100 Mbps. Eventually, FC-AL is expected to replace SCSI in high-performance storage systems. 
   IEEE 1394 (Firewire®)       IEEE 1394 or FireWire® (Apple Computer) is an interface standard adopted by the Institute of Electrical and Electronics Engineers (IEEE) for very fast digital data transfers such as streaming video. IEEE 1394 connections are used to transmit and receive data among FireWire devices, and are designed to replace external high-speed peripheral connections to personal computers (PCs), including hard disks, CD-ROMs, DVDs, graphics cards, high-speed scanners, direct video, monitors, etc. 
   USB       Universal serial bus (USB) is a 4-wire, 12-Mbps serial bus for low-to-medium speed peripheral device connections to personal computers (PC), including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc. The USB design is standardized by the USB Implementers Forum (USBIF), an organization that includes leading companies from the computer and electronics industries. The current USB specification is USB 2.0, which supports data transfer rates of up to 480 Mbps. 
   Fieldbus       Fieldbus is a bi-directional communications protocol used for communications among field instrumentation and control systems. 
   Bluetooth®       Bluetooth® provides wireless connectivity for short-range radio communication applications. Bluetooth is a registered trademark of Bluetooth SIG, Inc. 
   CANbus       Controller area network bus (CANbus) is a high-speed serial data network designed for harsh electrical environments and real-time control applications. It operates at data rates up to 1 Mbps and provides excellent error detection and confinement capabilities. 
   ControlNet       Control network (ControlNet) allows multiple controllers to control I/O on the same link. It is well-suited for peer-to-peer systems and offers deterministic, repeatable performance for both discrete and process applications. 
   DeviceNet       DeviceNet uses controller area network (CAN) network protocol to connect industrial devices such as limit switches, photoelectric cells, valve manifolds, motor starters, drives, and operator displays to programmable logic controllers (PLCs) and personal computers (PCs). 
   ARCNET       Attached resource computer network (ARCNET) is an embedded, high-speed, token-based network technology that provides local area network (LAN) communications between computers. ARCNET relies on a bus or star topology and can support up to 255 nodes. Different versions run at speeds of 1.5 Mbps, 20 Mbps (ARCNET Plus), and 100 Mbps. 
   PROFIBUS®       The process fieldbus (PROFIBUS®) is a popular, open communication standard used in factory automation, process automation, motion control, and safety applications. PROFIBUS is standardized in IEC 71158 and IEC 61784 and is suitable for both fast, time-critical applications and complex communication tasks. PROFIBUS is a registered trademark of PROFIBUS International. 
   PCI       Peripheral component interconnect (PCI) is a local bus system designed for high-end computer systems. PCI buses transfer 32 or 64 bits of data at a clock speed of 33 MHz. They also support 3 to 5 critical peripherals, which are either integrated directly onto the motherboard or added via expansion cards. PCI buses fully support cards that were developed for standard I/O buses. 
   PCMCIA (PC Card)       PCMCIA devices or PC cards are credit card-sized peripherals used mainly in laptop and notebook computers. They plug into a 68-pin host socket that is connected either to the motherboard or an expansion bus. An adapter takes the place of a COM port and translates the PCMCIA signals into a format that is usable by the computer’s bus. PC cards adhere to standards developed by the Personal Computer Memory Card International Association (PCMCIA). Originally, these standards were designed for adding memory to portable computers; however, standards now apply to many types of devices. There are three types of PC cards: Type I, Type II, and Type III. All types have the same width (54 mm) and length (85.6 mm), but vary in thickness. 
   PC/104 (PC/104-Plus, EBX, ETX)       PC/104 derives its name from the acronym for personal computers (PC) and the number of pins used to connect cards (104). PC/104 cards are much smaller than ISA bus cards and stack together, eliminating the need for a motherboard, backplane, and/or card cage. PC/104-Plus combines the PCI bus with the PCI/104 form factor for faster data transfers. Embedded board expandable (EBX) is a small (5.75” x 8”) form factor for single-board computers that supports PC/104 expansion.   Embedded technology extended (ETX) is a form factor for developing embedded systems that eliminates cables and connectors. The ETX-PC has a small footprint, 114mm x 95mm, and a maximum thickness of 12mm. 
   CompactPCI (cPCI)       Compact PCI (cPCI) is a high-performance industrial bus that uses the electrical standards of the PCI bus and is packaged in a Eurocard. Specifications for the CompactPCI bus are developed and maintained by the PCI Industrial Computers Manufacturers Group (PICMG). cPCI buses are used extensively in systems that require high speed data transfers. Examples include data communication routers and switches, real-time machine control, real-time data acquisition, military systems, etc. 
   PXI       PCI extensions for instrumentation (PXI) is a superset of CompactPCI that adds timing and triggering functions, imposes requirements for documenting environmental tests, and establishes a standard Windows®-based software framework. Windows is a registered trademark of the Microsoft Corporation. 
   GPIB       The general-purpose interface bus (GPIB) is designed to connect computers, peripherals and laboratory instruments so that data and control information can pass between them. It was originally developed by Hewlett Packard (HP) and called the HPIB bus. GPIB is also known as the IEEE 488 bus, and is electrically equivalent to the IEC 625 bus. 
   SCSI       Small computer systems interface (SCSI) is an intelligent I/O parallel peripheral bus with a standard, device-independent protocol that allows many peripheral devices to be connected to the SCSI port. A single SCSI bus can drive up to eight devices or units: the host adapter or controller, and seven other devices. Each device is assigned a different SCSI ID, ranging from 0 to 7.  SCSI formats include SCSI-1, SCSI-2, SCSI-3, Wide SCSI, Fast SCSI, Wide Fast SCSI, Ultra SCSI, Ultra2 SCSI, Ultra3 SCI (Ultra160), Ultra 320 SCSI, and Ultra640 SCSI. 
   VME / VXI       VersaModule Eurocard bus (VMEbus) is a popular, 32-bit bus used in industrial, commercial and military applications. The VMEbus is based on the VME standard, which defines mechanical specifications such as board dimensions, connector specifications and enclosure characteristics, as well as the electronic specifications for sub-bus structures, signal functions, timing, signal voltage levels, and master/slave configurations.  The VMEbus uses 3U and 6U Eurocards, rugged circuit boards that provide a 96-pin plug instead of an edge connector for durability. Several VMEbus varieties are available.  VME extensions for instrumentation (VXI) are an electrical and mechanical standard used mainly with automatic test equipment (ATE). VXI allows equipment from different vendors to work together in a common control and packaging environment. 
   Wi-Fi / WiMAX / Wi-Mesh       WiFi is based on the IEEE 802.11 standard. WiMAX is based on the IEE 802.16 standard. WiFi is an abbreviation for wireless fidelity. WiMAX is an abbreviation for worldwide interoperability for microwave access. The IEEE 802.16 or WiMAX standard is also known as WirelessMAN®, a registered trademark of the Institute of Electrical and Electronics Engineers (IEEE). Wi-Mesh is designed to extend the reach of WiFi networks over long distances by allowing multiple access points to carry each others' traffic. Unlike Wi-Fi hotspots, which need a direct connection to the Internet, mesh networks pass the data request until a network connection is found. 
   ZigBee       ZigBee (802.15.4) is a cost-effective, standards-based, wireless networking solution that provides low data-rates, low-power consumption, security, and reliability. 
   Modbus®       Modbus® is a family of simple, vendor-neutral, serial communication protocols that are designed for the supervision and control of automation equipment. Modbus is both a registered trademark and fully-owned product of Schneider Automation. 
   BACnet       Building automation and control networks (BACnet) is a data communication protocol especially designed for building automation and control. BACnet is developed, supported, and maintained by the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE). 
   DNP3       Distributed network protocol 3 (DNP3) is a suite of data communication protocols used in process-control and automation systems. 
   Other       Other unlisted network / bus protocol. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Performance
   Data Rate       The rate (in bits/sec) at which serial data is transferred. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Number of Ports       The number of available serial ports. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Connector       
   Your choices are...         
   DB9       D-Subminiature connectors are shaped like the letter "D" and referred to by their number of pins or sockets. Examples include DB-9 and DB-25 connectors. Except for the color of their shell, D-Subminiature connectors vary little between manufacturers. 
   DB25       D-Subminiature connectors are shaped like the letter "D" and referred to by their number of pins or sockets. Examples include DB-9 and DB-25 connectors. Except for the color of their shell, D-Subminiature connectors vary little between manufacturers. 
   RJ-11       RJ-11 connectors are used for telephone connections and network connections. 
   RJ-45       RJ-45 connectors resemble standard telephone connectors, but are twice as wide with eight wires. RJ-45 connectors are used for connecting computers to local area networks (LANs), and for telephones with many lines. 
   BNC       Bayonet Neil-Concelman (BNC) connectors were designed for military applications, but are used widely in video and RF applications to 2 GHz. BNC connectors have a slotted outer conductor and a plastic dielectric that causes increasing losses at higher frequencies. BNC connectors are usable above 4 GHz as long as the slots radiate signals; however, these devices may not be mechanically stable to 10 GHz. Both 50-ohm and 75-ohm BNC connectors are available. BNC connectors are also known as bayonet navy connectors or baby Neil connectors. 
   Wireless Link       The device uses a wireless link to communicate with the network. 
   Other       Other unlisted port type. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Mounting / Form Factor
   Mounting / Form Factor:       
   Your choices are...         
   Rack Mounted       Devices mount in racks and come with hardware such as rail guides, flanges, or tabs. Some rack-mounted devices fit in a standard 19” telecommunications rack. 
   Desktop / Tower       Devices are designed to sit atop a desk or fit inside a tower. 
   Portable       Devices have handles, a case, or wheels for ease of movement. They are not necessarily handheld. 
   Shelf Mounted       Devices are shelf-mounted. 
   DIN Rail Mounted       Devices mount on a standard DIN rail. DIN is an acronym for Deutsches Institut für Normung (DIN), a German national organization for standardization. 
   Panel Mounted       Devices fit a depression within a panel so that they are flush or nearly flush with the panel. 
   Printed Circuit Board (PCB)       Devices are printed circuit boards (PCBs) that attach to enclosures or plug directly into computer backplanes. 
   Other       Other unlisted mounting styles or form factors. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Environment
   Operating Temperature       This is the full-required range of ambient operating temperature. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
   Operating Humidity       This is the full-required range of ambient operating humidity. 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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