Nera Inmarsat-c, Service Manual

Page: 49 / 228

2.3 Terminal unit, IC-215
2-29
2.3.4 PWR board (16P0211)
The input voltage of this switching power supply is from 10.8 V to 31.2 V. The maximum
output current is 13 A when the input voltage is 10.8 V.
Fig.2.3.16 shows the block diagram of the PW board.
Fig.2.3.16 Block diagram of PW board
Output voltage
- +29V (TX: 3A)/+7V (RX:0.2 A): Antenna unit power supply (Controlling by the HPA ON
signal from RF CON/CPU board.)
- +6.5V, +3.3V and +5.0V
- VH1 and VH 2: Power supply for LCD (Controlling CFL CTRL signal from TERM CPU
board.)