How To Add a Serial Port to Laptop & Notebook PCs

  Hardware: Today’s Notebook PCs ship with one or, in some cases, zero onboard serial ports. Sealevel USB Serial and PCMCIA Serial I/O products bypass this limitation by providing additional serial ports for all of your mobile data acquisition, automation, and control needs. Isolated USB products are also available to eliminate the effects of ground […]

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How To Construct Serial Loopback Adapter Plugs

  Sealevel serial I/O devices typically include a loopback plug with each shipment that can be used to test data lines. Additional loopback plugs can be purchased for a small charge. Item number LB101 is a DB-9 loopback that is specially constructed to test data signals on RS-232 and Sealevel RS-422, RS-485 serial ports. Item […]

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How To Control an Acromag® 906MB Modbus RTU Module

  Controlling a Modbus RTU Module Hardware: A PC with Sealevel DIN rail interface converter (Part# 1104 or 1105) connected to a Modbus RTU Module. The 1104 provides RS-232 to RS-485 conversion and our exclusive autobaud feature that automatically syncs to your data rate and controls the RTS enable/disable signal. The 1105 includes the same […]

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How To Control an Analog Devices® 6B50 I/O Module

  Hardware: A PC or Laptop with Sealevel RS-485 serial adapters (Part# 7105, 7201, or 7205) PCMCIA serial adapter (Part# 3602) or SeaLINK USB serial adapters (Part# 2102, 2202, or 2203) along with serial cables with DB25 connectors (Part# CA104) or DB9 connectors (Part# CA176) can be used to connect the PC to the TB04 […]

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How To Control RS-422 SMPTE VTR / Editing Decks

  Hardware: A PC with Sealevel PCI RS-422 Serial Adapter (Part# 7201, 7204, or 7205) or USB SeaLINK RS-422 Serial Adapter (Part# 2202, 2203, 2402, or 2403), connected to Studio Gear with a Sealevel CA190 cable. The CA190 cable is available for use with any Sealevel DB9 RS-422 serial adapter.  

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How To Update SeaLINK Ethernet Serial Firmware

  The Firmware Update Process Updating the firmware on a SeaLINK Ethernet serial server takes approximately one minute to complete. This article details the steps required to update the firmware and covers two methods. Prior to SeaLINK v2.3.22 firmware, the SeaLINK Configuration Utility is required. With SeaLINK v2.3.22 firmware and later, the SeaLINK web administration […]

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SeaI/O RS-232 Communication via Bluetooth

  Bluetooth Communication Communicating via wireless connection has become commonplace in the 21st century. Cell phones, laptops, PDAs and other electronics constantly remind us of this trend. As this capability has become more widespread, so has the desire to enjoy the benefits of wireless communications in traditionally wired applications. In this application note, you will […]

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