Serial Port

• PC serial port buffer

  2007-10-07 03:44:32

  This is a simple serial port buffer circuit I designed for a friend to speed up his SLIP connection in campus computer network “TRINET” of Helsinki University of Technology. The problem in the network was that the RS232 commections from rooms to terminal server were long and made of bad quality wiring. The circuit is a [...]
• Serial port connections

  2007-06-06 09:07:00

  Monitor and Control ConnectionsThe monitor and Control port allows external control from a modem, ASCII terminal or PC. SeaTel supplies a windows based antenna control program called PCDAC with allows choosing satellites and tracking functions and dialog box control of tracking and searching functions.The DAC-97 is wired as a DTE device for direct connection to a modem. For connection to another DTE device such as a terminal or PC, a null modem cable is required . connect the null modem cable between J11 on the back of DAC-97 and the ASCII terminal or PC serial interface port. Set the terminal or PC to 4800 baud, 8 bits, no parity (9600 baud operation is available on the Aux serial Board only by installing a jumper at D1). Enable the interface by selecting the system TYPE parameter under the MODE/SETUP display and verify that 8 or a combination that includes 8 is selected.The DAC-97 is available with one or two NMEA/M&C ports installed at J13 and J11. if two ports are installed , use