Toshiba Aplio SSA-770A Service Manual page 266

Diagnostic ultrasound system
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No. 2D730-148E*O
(3)
Operations
As shown in figure 17-3, the 3D position sensor consists of the control unit, the position
sensor transmitter, the position sensor receiver, and the power unit. They are connected to
the system by a cable and a g-pin D-sub connector.
The power unit is supplied with
100/240 VAC by the system and supplies DC voltage to the control unit. The control unit
receives the positional data transmission
request command from the system and transmits
a pair of positional and directional data sets (x, y, z: a, 8, y) via a serial interface (RS-232C)
at IO-ms intervals.
The data must be input to the COM2 port on the system, which is a
serial interface*.
The control unit calculates the position and directions based on the
amount of current that is induced in the position sensor receiver in each of the three
magnetic field directions x, y, and z that are generated
at different times.
* For a protocol, select a COM port not used by the VCR or 3D position sensor.
The FLYKTDBY
switch, which is intended to switch the status of the control unit between
running and standby, must be set to FLY at all times.
1
AC1 00-240V
Aplio
COM2
I
I
D-Sub9
Power
unit
I
RS-232C
POWER
&OR
Control
unit
b
Position
sensor
receiver
rl
Position
sensor
transmitter
Figure 17-3 System configuration
17-2

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