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PTX-LCD
25 / 58
User Manual
Rev. 2.3 - 18/07/07
Reading and setting of the audio input level. The reported value indicates the
audio level that generates 100% modulation. Pushing the encoder while the
cursor is on this item, will put you through the menu that permits to modify the
audio input level setting.
Figure 7-10
The level can be changed between -13 and +14 dBm, at 1 dB steps. On the
back of the exciter there are the trimmers to perform fine regulations of the
input levels.
This status bar reports some settings that can be modified in the administration
menus and that will be described in the following of this manual.
Ste
Audio setting: Stereo/Mono/MPX_U/MPX_B
50u
Preemphasys: 0, 25, 50, 75 microsec
Cl
Clipper function, activated (On) or deactivated (Off)
Pl
Pilot tone included (On) or excluded (Off)
001
this machines address, comprised between 001 and 256, that is
meaningful when the exciter is included in a telemetrized transmission
system.
Selecting this menu item you will be presented with the menu of time anlaysis
of modulation level.
Figure 7-11
100
sampling time of the graphic, selectable out of 100,500 or 1000
millisec; the indicator in the higher part of the display notes the cycle
starting point.
Each bar corresponds to the modulation level in an interval long as
the sampling time
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