R.V.R. Elettronica PTX-LCD, User Manual

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PTX-LCD
21 / 58 User Manual Rev. 2.3 - 18/07/07
7. Operating System
The exciter is microprocessor-controlled. The software structure can be divided
into a start-up phase and a main cycle.
7.1 Start-up
7.1.1 Operating system loading
When you switch the exciter on, a window appears on the display, showing some
information about the device (Fig. 7-1). Note that "CCIR" in the figure, refers to
the set of values that would be used in case of EEPROM error and software re-
initialization.
Figure 7-1
After about 10 seconds, a new window will show up, while the buzzer emits an
intermittent sound (Fig. 7-2).
Figure 7-2
While this window is displayed, pushing the encoder will cause RF power to be
set "Off": in this way it's possible to change the various parameters before starting
transmitting.
After 5 seconds, or when the encoder is pushed, the software jumps into its main
cycle.
7.1.2 EEPROM Re-initialization
At start up, the PTX-LCD software check the coherency of the data stored in the
non volatile memory (EEPROM) with respect to the software version. A discrepancy
will be detected in case software upgrade.