Mindray DC-8 EXP Service Manual

Product Principle 4-3
4.2.1 Probe Board
Front-
end
analog
mother
board
Probe socket D
Probe socket C
Probe socket B
Probe socket A
Signal switch
( relay unit )
…
CPLD
Probe related control
signal
Pencil probe socket
245 drive
4D&
TEE
signal
socket
CW transmitting & receiving signal
CW_POUT
4D&TEE signal
Transmitting & receiving signal
Probe control
circuit
…
Probe control signal
A+12V/A+5V7/A+100
V/A-100V
Pencil probe/probe present signal
Signal switch
( relay unit )
Transmitting& receiving
signal POUT
Pencil
probe
signal
socket
Pencil probe
socket
Probe board
Fig 4-3 Schematic diagram of probe board
Hardware structure of the probe board is shown as the figure above:
Functions of the probe board are:
 Supports 256/192/128elements probes, 4D probes, 128/96/64-elements phased array probes
and TEE probes;
 Probe board only supports 128 channels; for 192/256elements probe, elements switching is
performed in the probe to match 128 channels on board. Including four 260-pin probe sockets.
 Supports 4 probe ports switching and ID recognition of probes on every port. The circuits for
ID recognition and probe switching are independent.
 Supports echo signal channel switching, outputting CW signal independently which can
improve CW signal-noise ratio.

Mindray DC-8 EXP Specifications

General

Brand	Mindray
Model	DC-8 EXP
Category	Medical Equipment
Language	English