R.V.R. Electronica PTRL, User Manual

Page: 15 / 48

PTRL & RXRL LCD
11 / 44 User Manual Rev. 1.2 - 31/01/05
For the regulation of the levels of the sub-carriers' inputs, a similar procedure can be
followed, with the help of the option "X10" which can be selected from the menu Fnc.
With this option, the indicated modulation level is multiplied per the factor 10, so that
the hachured indication of the predefined menu coincides with a deviation value of
7,5 kHz.
As for the stereo version, there is an appropriate menu in which the levels 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.
• Preenphasis (switch [7] Chap. 7.2):
ON
1 2 3 4
50
µ
s
ON
1 2 3 4
75
µ
s
• Impedance of L&R inputs (XLR type) (switch [27] Chap. 7.2):
Switch 1: Impedance of R XLR ON input = 600
Ω
, OFF = 10 k
Ω
Switch 2: Impedance of L XLR ON input = 600
Ω
, OFF = 10 k
Ω
• Functioning modes / Impedance of MPX input ([8] Chap. 7.2):
Switch 1: Functioning mode ON = Mono, OFF = Stereo
Switch 2: impedance of MPX ON input = 50
Ω
, OFF = 10 k
Ω
5.4 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, depending on the case, 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: