6  Transesophageal Transducer 
6 - 22  Instructions for Use 
Managing the Lens Surface Temperature (V5Ms) 
You can reduce the acoustic output to lower the lens surface temperature. 
See also: Imaging Functions that Change Acoustic Output, Safety and Care, Chapter 2, Instructions 
for Use 
To reduce the acoustic output: 
  Lower the transmit power. 
  Change the scanning mode. 
Follow the instructions included in the on-screen messages if the lens surface temperature 
approaches, reaches, or exceeds the thermal limit. 
Thermal Limit 
Near thermal limit. 
Advise lower output 
setting. 
The lens surface 
temperature 
approaches 40°C. 
1.  Click Close to remove the message. 
2.  Reduce the acoustic output. 
Thermal Limit 
At thermal limit. 
System frozen. Press 
Override to continue. 
The lens surface 
temperature reaches 
41°C (the thermal limit). 
1.  Click Override. 
2.  Reduce the acoustic output. 
Note: You can click Override and continue to scan the 
patient when the temperature indicator displays 41°C or 
higher without lowering the acoustic output. If the acoustic 
output is not reduced, the lens surface of the transducer 
array may reach 43°C during imaging. If this happens, the 
system automatically freezes the image and turns off the 
transmitted power to the transducer. 
Thermal Limit 
Maximum thermal limit 
exceeded. Disconnect 
transducer to continue. 
For more instructions, 
see user's manual. 
The lens surface 
temperature reaches 
43°C (the maximum 
thermal limit is exceeded). 
Note: When the lens surface temperature reaches 43°C, the 
system stops imaging and turns off the transmitted power to 
the transducer. 
1.  Click Close to remove the message. 
2.  Disconnect the transducer. 
3.  Reconnect the transducer after the transducer has 
cooled. Or, use a different transducer. 
Note: If the original transducer is left in place, it will not be 
operable until the lens surface of the transducer array has 
cooled sufficiently (typically less than one minute).