System Overview 2-15 
2.8.2  I/O extend module 
  Overview 
 
No.  Symbol  Function 
<1>, <2>
USB port   
Connects USB devices. 
<3>  ECG Port    Connects the ECG module 
<4> 
Serial port   
Connects serial port devices 
<5>, <6>
Audio output port   
Used for audio signals of Doppler mode sound 
from DVD output or audio comments 
<7> 
Mic In port   
Reserved.(Connects a microphone used for 
receiving audio comments when a recorder is 
used to record images) 
<8> 
Remote control port   
Connects the control port of the video printer 
<9> 
Composite video output port 
 
Used for receiving the output image signal of 
the video printer or DVD recorder 
<10> 
DVI-I output port   
Connects a display or projector 
  To connect the module: 
Connect the I/O extend module to the main unit via the I/O extend port, thus the data port 
is extended. As shown in the following figure. 
 
 
CAUTION:
When connects serial port devices (via port <4>) or the ECG 
module (via port <3>), you should first freeze the image or power 
off the machine, or malfunction may result.