• Left rack with computer (switches inside back door to left and right)
• Middle (receiver) rack power (switch inside back door to left)
• Right (transmitter) rack power (Big black switch on front)
• the two synthesizers (Scomandl and Ailtech under the ledge) (small switch from standby to on)
• The computer (switch on front)
• (optional but useful) the oscilloscope

When the Tx is on, go to main menu (use <esc> to get out of a menu) F1 (schedule) and choose one.
Which schedules to run ? I suggest B12MIN or B6MIN for most experiments like CP-2, CP-7 or CP-1 (these run a B-mode sounding every 12 or 6 minutes, timed to miss the Digisonde interference .i.e. a sounding at 4, 16, 30, 40, 52 mins past each hour). I12MIN or I6MIN or even I3MIN could also be used. These are faster but contain less information.

For PMSE soundings at two frequencies (6.77 MHz, and 26.12 MHz) try PPMSE at the bottom of the menu (this saves large files to a ramdisk d:) which will be lost on power down. If you want to keep them copy them to the hard disk.

The data are stored in c:\fais\data\current Utility programs under F3 such as datmovie can be used to look at the data.

• The computer
• the two synthesizers to standby (Scomandl and Ailtech under the ledge)
• The left rack power switches (switches inside back door to left and right)
• Right (transmitter) rack power (Big black switch on front)
• Middle (receiver) rack power (switch inside back door to left)

If a sounding won't run, try RXVM (Voltmeter) from Utilities. If this does not show any green numbers, then there is something wrong with the 10 MHz reference.

If a sounding shows no echoes on the PC screen, there can be two reasons for this:

1. There may be so much absorption that there are no echoes.
2. One of the two receiver channels may be faulty. To check this look at the two

1. The dynasonde server PC (dynserv) must be running Windows for Workgroups, such that the Dynasonde computer (Dynas) has write access to the directory c:\fais\data\latest. This will happen automatically when booting up or starting windows on the PC with.
   When booting the Dynasonde (with option 5), it automatically logs on to this PC, so make sure that dynserv is running first.
2. The Web server must be running. This is also started automatically when starting windows. This allows other computers to access the file c:\httpd\htdocs\last-dyn.gif.
3. The program clocker must be started (it usually starts automatically on entering windows). This scheduler starts up the main analysis program usually every 6 minutes, although this can be altered.