User's Manual

PTRL-LCD & RXRL-LCD
ELETTRONICA
27 / 36
User Manual
Rev. 2.3 - 26/06/19
MAIN CARD
PANEL CARD
POWER SUPPLYPOWER AMPLIFIER CONTROL CARD REDUCING CARD
24V-12V
DC CONNECTION
RF CONNECTION
A brief description of the functions of each module will follow, while the complete
schemes and the layouts of the cards are shown in the appendix.
7.1 Spare parts
The list below identifies the spare parts codes for a simple replacement of modules
in case of maintenance.
Spare Parts Name
Spare Parts Code
Band
200-400 MHz
400-500 MHz
780-980 MHz
Switching power supply
KPSL2804V01B + SP-SRG085A
RF final section
SP-FIN007A
SP-FIN007B
SP-FIN007C
Main audio card + PLL + VCO
SP-MBD007A
SP-MBD007B
SP-MBD007C
CPU panel & Display
SP-PAN175A
Fan
VTL0824UB
7.2 Power supply
The power supply of the PTRL-LCD is a switching unit whose 24V main output
will formerly be reduced in order to supply the RF stage of the unit.
The stabilizers for the 5V and 18V continuous voltage generation for the supply of
the other circuits of the unit are present on the power supply. Please note that the
power supply is “direct from the AC line”, therefore without transformer, and it can
be connected to any of the voltages comprised between 100 and 230 V without
making any regulations or manual settings. The auxiliary 24V continuous voltage
inputs are connected to the power supply and intervene automatically in order to
collide with possible AC supply absences.