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Customer Spotlight - Isolated USB to 16 Serial Ports

From Sealevel Systems, Inc.
 

 
A leading manufacturer of semiconductor fabrication equipment needed a way to communicate with a large number of serial devices from an industrial computer running their process control software. They preferred using the system's USB port, but required isolation to protect the computer from potentially harmful voltage spikes. Sealevel leveraged our expertise in USB and serial connectivity to design a custom isolated USB to 16 port serial solution. Using extensive experience in USB to serial solutions and custom chassis design, Sealevel delivered working prototypes meeting all functional requirements in only six weeks. RJ45 connectors were chosen for the RS-232 serial ports with each connector providing separate Tx & Rx indicator LEDs. Achieving fast, error-free operation on multiple serial ports simultaneously required careful design considerations. Isolating the USB signal was done using a CPLD (Complex Programmable Logic Device) along with high-speed digital isolators.
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Product Announcements
Sealevel Systems, Inc. - Item# 2807: USB to 8-Port Serial Adapter
USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter The SeaLINK+8.VC 8-port USB to serial adapter offers an easy way to connect multiple RS-232 or RS-485 devices via a single USB port. With... (read more)
Sealevel Systems, Inc. - USB to Isolated Serial Adapters w/ Locking USB
Isolated serial interface adapters offers an easy way to connect serial devices to a USB port. The serial port is configurable for RS-232, RS-422, or RS-485 without opening the case. Optical isolation... (read more)
Sealevel Systems, Inc. - Item# 270U: Isolated USB Hub w/ Locking Connectors
Sealevel Systems' SeaI/O-270U, is a seven-port optically isolated USB hub that protects computers from damaging power surges, spikes, and ground loops commonly found in industrial and OEM... (read more)
B&B Electronics Manufacturing Co. Inc. - Connect Serial Devices to Your USB-only PCs
Get the extended range and multi-drop capability of RS-232 or RS-422/485 from your PC's USB port. Up to 3000 VDC optical isolation and 15kV ESD surge protection for PCs and laptops from dangerous... (read more)
Sealevel Systems, Inc. - Software Configurable 4-8 Port USB Serial Adapters
Product Highlights • Each port is software configurable for RS-232, RS-422, or RS-485 • Electrical interface settings are maintained across multiple computers • Includes two USB... (read more)
B&B Electronics Manufacturing Co. Inc. - Connect and Isolate Serial Devices on USB Ports
Connect multiple serial or legacy RS-232 or RS-422/485 devices to your PC or laptop USB port. Get 3000V optical isolation from voltage spikes and group loops. 2 or 4 port versions, USB port powered,... (read more)
Sealevel Systems, Inc. - Embedded Software Configurable USB Serial Adapters
Product Highlights • Serial ports are software configurable for RS-232, RS-422, or RS-485 • Automatic RS-485 enable/disable • DB9M connector(s) with full modem control signals... (read more)
Sealevel Systems, Inc. - Software Configurable 1-2 Port USB Serial Adapters
Product Highlights • Each port is software configurable for RS-232, RS-422, or RS-485 • Electrical interface settings are maintained across multiple computers • USB bus powered... (read more)
Sealevel Systems, Inc. - Relio R4000 I/O Expandable 1U Rackmount Computer
Sealevel Systems, Inc. announces the Relio R4000 rackmount computer designed for use in space-critical environments. Available with up to a 1.4GHz Intel Pentium M processor, the R4000 offers... (read more)
Sealevel Systems, Inc. - Relio™ R1300 Industrial Computer, AMD Geode™ LX800
Product Highlights • High-performance, low-power AMD Geode™ LX800 processor • Compact footprint and rugged metal case are ideal for industrial applications • Trouble-free... (read more)
Topics of Interest
A customer designing a new hazardous area computer system required all external connections to the host to be isolated in order to meet certification requirements. The single board computer used in... (Read More)
The USB-ADP-PC serial adapter is to be used with either the USB2000 or the HR2000 spectrometer when interfacing with PCs. To install the USB-ADP-PC adapter, refer to Figure 2 and use the following... (Read More)
AN1169 USB Mass Storage Class on an Embedded Device FEATURES Author: Sean Justice Microchip Technology Inc. This application note provides key components of an MSD device function driver. The... (Read More)
The RS-232 serial interface is no longer a common port found on a personal computer (PC). This is a problem because many embedded applications use the RS-232 interface to communicate with external... (Read More)
11.08 Configuration Configuration of the communications driver is very simple because all you have to do is change a few #defines to accomodate your environment. COMM_PC.H (or CFG.H):... (Read More)
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