Two vaisala PMB220 barometers, U4110004 and NCAR0003 have
failed during this project.
They will work if one sets an internal dip switch to
"use factory defaults". Switch bank S1,
SW8=ON=factory defaults, OFF=user settings.
The barometers do not work if set to OFF=user settings.
The factory defaults for the serial port are 9600,even,7.
My plan for using these barometers is to install them
on stations that are configured for the barometer
on a serial port (choose from 1,4,5,7,8), and change
the serial port config from none,8 to even,7.
The current stations without a barometer are 6 and 9.
So the plan is to put U4110004 at station 1, and take
whatever barometer that was at 1 to station 9.
Then put NCAR0003 at station 4 and take 4's barometer to 6.