SVP DCM-1070, User Manual

Page: 13 / 69

Chapter 1: VT-70 Modulator
VR-70 and DCM User’s Manual Page 13
2. Connections
The figure below shows every connection of both, VR-70 demodulator and
DCM up-converter.
Figure 2.1 VR-70 demodulator and DCM Down-converter connections
2.1 Power Supply
The VR-70 modulator can be feed by and AC source between 100 and 240V
or by a DC source of 12 to 14V. The -48V power supply is optional; range
from -36 to -72V.
When the equipment is fed by an AC source, this is connected to a switched
power supply that gives a 12V/4,2A output.
The power-supply board receives either the 12V supply from that power
source or a DC voltage between 12 and 14V from the DC power input.
Then, converts the input to the supply voltages required by the equipment:
+5V, +10V, +12V, -12V and +24V. In this way, the equipment can be fed
by a 12V voltage signal coming from a battery.
The equipment has a power supply that operates when the equipment is
fed with 220V AC to feed all the receiver’s modules. The output current of