Siemens SONOLINE G50 Service Manual page 27

Chapter 2 - System Architecture
The complete E module is a spare part; the individual component boards discussed
below cannot be replaced individually.
Note: Do not break the seal on the E module; doing so can invalidate equipment
warranty.
The A25 MFIL (Mother Filter) filters the incoming +3 Vdc supply received from the
A07 power distribution PCB.
The A36 PSEL (Probe Select) receives echo data from either the A36-1 XSEL
(Transducer Select) PCB or the A36-2 A3RD (Array Third) PCB. Onboard functions
include transmit power fault detection and 192 element to 64 channel high voltage
multiplexing (HV/MUX). HV/MUX control and the transmit pulses are received from
the A42 TXBF (Transmit Beamformer) PCB The multiplexed echo signal is sent to the
A40 PAMP (Preamplifier) PCB.
The A36-1 XSEL (Transducer Select) is used with array transducers only, and has
two array sector ports physically attached. This PCB is only used to attach
transducers to the A36 PSEL (Probe Select) PCB.
The A36-2 A3RD, Array Third PCB, is an array port that is installed on systems that
require the ability to use specialized transducers. This PCB is standard equipment on
the G60 S and optional equipment on the G50. These systems can include 3D, multi-
plane transesophageal, and bi-plane endocavity transducers. This PCB receives
commands from the A66 DTPS (Data Transfer/Power Supply) PCB via an SS-bus.
Onboard functions include motor control for specialized transducers, and transducer
thermal sensing. The received echo signal is sent to the A36 PSEL (Probe Select)
PCB for processing, and thermal sensing signals are sent to the A50 SUBC
(Subcontroller).
The A40 PAMP (Preamplifier) receives 64 channels of echo data sent from the A36
PSEL (Probe Select) PCB. The primary function of this PCB is to receive foldover
using a 64 channel to 32 or 64 channel cross-point switching circuit. The output echo
signal is sent to both the A46 RXBF-A and B (Receive Beamformer) PCBs. Steered
CW (SCW) transducer signals are sent to the A44 STRX (Steerable CW Receive/
Transmit) PCB.
The A40-1 CWRX (CW Receive) is present on systems that require CW transducers
and is standard equipment for the G60 S. This PCB directs transmit and receive
signals from the CW probe to the A44 STRX (Steerable CW Receive/Transmit) PCB.
This PCB is a daughter card to the A40 PAMP (Preamplifier).
The A40-3 RX32 (Receive 32) is not installed on the systems that require 64 transmit
and 64 receive channels (RX64). The G50 employs the RX32 while the G60 S
employs the RX64. This PCB is a daughter board to the A40 PAMP (Preamplifier).
The primary function of this PCB is receive foldover using a 64 channel to 32 channel
cross-point switching circuit. This PCB works in conjunction with the A40 PAMP
(Preamplifier) PCB. The output echo signal is sent to the A46 RXBF-2 (Receive
Beamformer) PCB only.
The A42 TXBF (Transmit beamformer) provides HV/MUX control, high voltage fault
detection control and transducer transmit pulses for the A36 PSEL (Probe Select)
PCB.
Siemens 7482255 Rev 01
October 2002
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