R.V.R. Electronica PTRL, Руководство пользователя

Страница: 23 / 48

PTRL & RXRL LCD
19 / 44 User Manual Rev. 1.2 - 31/01/05
As for the stereo version, there is an appropriate menu in which the levels of the of
the right and left channels with the corresponding nominal level indicators for the
maximum 75Khz deviation are indicated separately.
The position of the DIP switches that are needed to select the available options is
indicated on the silk-screen.
• Deenphasis (switch [18] Chap. 7.5):
50
µ
s 75
µ
s
6.4 Software
The unit is equipped with an LCD display with 2 lines on which several menus are
shown. A general view of the menus of the unit are shown in the illustration.
On the left side of the display, in function of the cases, one of the following symbols
can be present:
The parameter indicated by the arrow can be modified
The arrow indicates the current line, whose parameter cannot be modified. This
symbol is present in the menus composed of several lines as an help for the
scrolling of the menus.
When the unit is switched on, the LCD display shows the predefined view, with the
graphical representation of the instantaneous modulation level and the indication of
the value of the direct power erogated:
The vertical bars under the key "Mod" indicate the progress of the modulation in real
time; the hachured bar indicates the maximum 75 kHz nominal modulation level
(100%).
The above line displays the instantaneous reading of the signal level received on
analog scale, while the bar indicates the setted level. In order to increase the level,
keep the RIGHT/DOWN button pressed, in order to reduce it press the LEFT/UP
button. As the setted level increases or decreases, the bar gets longer or shorter in
order to enable the display of the current setting. Once the desired level is reached,
press ENTER to confirm and exit the predefined menu. Please note that the setted
value is anyway memorized, therefore when you press ESC or when the timeout
period is passed and no button was pressed, the power will remain on the last setted
level.