R.V.R. Elettronica PTX-LCD, Руководство пользователя

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PTX-LCD
47 / 58 User Manual Rev. 2.3 - 18/07/07
11.1.1 Adjustings, settings and indicators
The switching mode power supply doesn’t need any adjusting, while the power
supply board features a number of indicators and adjustable components.
D52 lit: fault of the power amplifier fuse
D53 lit: fault of PF1 fuse
D54 lit: v5V OK
D55 lit: v15V OK
D57 lit: voltage -12V OK
D58 lit: power amplifier power supply OK
RV1 adjustment of the temperature sensor
R17 adjustment of the level for external AGC
R18 adjustment of the level for external AGC
R30 adjustment of the measurement of PA current
R35 adjustment of the maximum PA current
R39 adjustment of the measurement of forward power
R51 adjustment of the measurement of reflected power
R98 adjustment of the measurement of driver stage current
JP6 1-3, 2-4 the Remote connector pins are used as analog input
3-5, 4-6 the Remote connector pins are used for I
2
C communication
11.2 Audio motherboard
This board (Fig 11-4) is the interface between the audio section boards and the
PLL with the other modules of the exciter. The audio motherboard is in the lower
left part of the exciter (Fig. 10-1 4). It contains the connectors on which the other
boards are directly plugged in.
This module also contains the circuit mixing MPX signals and SCA/RDS subcarriers.
D4
D5
D6
D2
JP8
Figure 11-4