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No. 2D730-148E*O
4.1.1
TI
(1)
Outline
The TI board (Transducer
Interface board) includes the three array transducer connectors
and enables switching of the transducers to be connected to the pulser/preamplifier.
(2)
Description of functions and operation
(a)
Array transducer switching
This board contains the three 360-pin ZIF connectors for the array transducers
and
switches between the 192-ch echo line and the required control line using a relay.
The transmission/reception
signals are transferred
to the pulser/preamplifier
mounted
on the TR board through the Backplane
board.
(b)
Pencil transducer transmission/reception
signal connection
The connector box for the pencil transducer is installed in the cabinet and is thus
connected to the TI board via a cable. The transmission/reception
signals coming
from the pencil transducer are transferred to the pencil pulser/pencil
preamplifier
mounted on the CB board through the TI and Backplane boards.
(c)
Support of the M-TEE transducer
l
Thermistor line
Transfers signals coming from the temperature
detection thermistor embedded
in
the M-TEE transducer to the ADC mounted on the RC board. (Up to two
thermistors are supported.)
l
Angle detection line
Transfers signals coming from the angle detection potentiometer
embedded
in the
M-TEE transducer to the ADC mounted on the RC board.
(d)
Support of transducer with impedance
converter
This board supplies power for collector bias of the impedance
converter.
An over-
current detection circuit is provided.
The emitter bias power supply is provided from
the TR board.
(e)
Support of 1.5 D transducer including a HVSW
l
This board receives the control data for the HVSW embedded
in the transducer
(walking bus) from the RC board and transfers it to the transducer.
l
This board supplies f 100 V for the HVSW embedded
in the transducer.
(f)
Power supply for circuit inside the transducer
This board supplies + 5 V for the circuit inside the transducer.
An over-current
detection circuit is provided.
4-5
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