Sealevel offers several accessories for interfacing many serial connections. The universal D-Shell Converter Kit (Item# DB101) includes DB9 and DB25 Male and Female connectors, D-sub hoods and wires. The DB101 makes it easy to build a custom gender adapter…

There are only a few cases where you would want to change a COM number assignment. Your application only works at COM1 through COM4 and the Sealevel serial device you just installed comes in at COM5 or higher. Or, you just installed a multiport serial card…

Only the data pins (TX and RX) are necessary for a loop back test. Unless you need to test the modem control signals (RTS, CTS, DCD, DTR, DSR, and RI) there is no need to connect them. Please refer to your manual for the correct pin assignments for your serial…

The GPS modified boards are designed to work primarily with the Rockwell Collins GPS receiver with a data rate of 76.8 Kbps. The modification is necessary because 76.8 Kbps is not a standard baud rate. To get 76.8 Kbps select 115.2 Kbps as your data rate…

Make sure connections are clean and secure and thumbscrews are tightened If running long distances, choose a low capacitance cable Avoid running communication cables near AC power lines, fluorescent lights, motors, transformers or any devices with a strong…

Most of our bus based adapters, including PCI Express, PCI, PCMCIA, PC/104 and ISA, can be used. The adapter must have a 16C950 UART installed and support the Ring Indicator (RI) signal. The 16C950 UART is necessary to allow the SeaCOM driver to put the adapter…

Sealevel recommends using the installed COM numbers if at all possible to avoid system conflicts. If you previously installed a USB or PCMCIA serial interface, it will have resources assigned by the operating system. If the device is not currently connected…

You are describing the "crazy mouse" syndrome, a common condition when Microsoft Windows receives NMEA 0183 data from a serial GPS device. The condition occurs when the GPS data is misinterpreted as mouse data by the Windows serial enumerator and will cause…

By default, SeaLINK Ethernet serial servers use Nagle's algorithm to reduce network traffic and increase serial data throughput, with the side effect of increasing latency. Both SeaLINK devices and the virtual COM port driver have settings to disable Nagle's…

To optimize a SeaLINK Ethernet serial server for lower latency, disable Nagle’s algorithm on both the SeaLINK device and virtual COM port driver. SeaLINK devices and drivers use Nagle’s algorithm, also referred to as “nagling”, to increase serial…