4.4
Computer Diagnostics
TracVision SA has been designed to provide diagnostic readouts
viewed on the TV screen (DSS only) or on a personal computer
having an RS-232 serial communication port. If you are unable to
isolate a system problem with the foregoing troubleshooting
tools, set up for computer diagnostics as described below. System
problems will most likely be found somewhere through the
diagnostic readouts.
The diagnostics procedure requires terminal emulation software
such as PROCOMM, Windows Terminal, or Windows 95
Hyperterminal. Use the settings appropriate to your application.
1. Connect one end of the PC cable to the DB9
connector on the switchplate. Connect the other
end to the serial port on the PC (a 9-pin/25-pin
connector adapter may be needed for some PCs).
2. Open the terminal emulation software and
establish the following settings:
• 9600 baud
• no parity
• 8 data bits
• 1 start bit
• 1 stop bit
• no flow control
3. Apply power to the TracVision SA system and
allow the system to complete full initialization.
Data should be scrolling on the PC display to
identify any system problems detected. If no data
is seen, recheck your connections and the terminal
software setup.
4.5
Maintenance Port Parser
Commands
TracVision SA system parser commands are detailed in
Appendix F
.
4-5
Troubleshooting
54-0149 Rev. B
Most terminal emulation programs
have a parameter for local
character echo. Select this
parameter to see what is being
typed without any system delay.
