Structure and Assembly/Disassembly of the Machine
Figure 3-42 High voltage pulse output
2.
Reception selection
The reception selection circuit is shown as follows:
Figure 3-43 Schematic diagram of the reception selection circuit
4.
Voltage-controlled amplifier
To make the echo signal match the monitor, the internal circuit structure of the machine is
comprised of three parts, namely, low noise pre-amplifier
(
LNP
)
, voltage-controlled
attenuator
(
VCA
)
and programmable gain amplifier (PGA).
5.
ATGC voltage generating circuit
The voltage of ATGC is generated by TLV5626
(
DAC
)
. TLV5626 can provide two-
channel DAC; one is used for generating PHV adjustment signal and the other is used for
DP-3300/DP-3200
Service Manual
(
V1.1
)
3-7
Summary of Contents for DP-3200
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