NEC DTU-70 - Page 49

GWP-G22996
3 - 1
SECTION. 3 FUNCTIONAL DESCRIPTION
This section furnishes the operator with sufficient information pertaining to the functions of
the DTU-70D series by reference to the circuit sections introduced in 2-5, as well as to the block
diagram of Fig. 3-1.
Power
Supply
EXCITER
CIRCUITS
See 3-1
TS
OUTPUT
FILTER
See 3-4
To Antenna
POWER
AMPLIFIER
See 3-2
TRANSMITTER
CONTROL
SYSTEM
See 3-5
COOLING
SYSTEM
See 3-3
Fig. 3-1 Simplified block diagram of digital transmitter