Patient Parameter Specifications Appendix
6 - 6 0070-10-0666-01 Trio™ Operating Instructions
Electrical Surgical Unit (ESU) Use:
ECG Filters:
Protection: 3 and 5 Lead ECG meets ANSI/AAMI EC13 
requirements for functionality following ESU 
energy exposure. The system is capable of 
withstanding ESU stress with no permanent 
damage and regain normal function within 
10 seconds after removal of the disturbance.
Withstand: 3 and 5-Lead ECG will withstand ESU stress 
from a High Frequency Surgical Unit 
operating at 300 Watts in cut mode and 
100 Watts on coagulate mode.
Noise Suppression: 3 and 5-Lead ECG peak noise is less than + 
2 mV from ECG baseline when used with 
AAMI compatible cables. 
ESU Interference Filtering: An ESU Interference filter will provide 
greater than 90 dB attenuation at 500 kHz. 
The ESU Filter is turned ON by selecting 
SURGICAL mode and OFF by selecting 
either MONITOR or EXTENDED modes.
50/60 Hz Notch Filtering: A Notch Filter is provided from 50 to 60 Hz. 
The Notch Filter is ON when in MONITOR 
or SURGICAL modes and OFF when in 
EXTENDED mode.
Pacemaker Pulse Display: Pacer rejection/enhancement is able to be 
turned ON or OFF.
Rejection: Pacer signals from ±2 mV to ±700 mV (RTI) 
amplitude and 0.1 ms to 2 ms in duration, 
and a maximum of 100 μs rise time are 
rejected from the display when the Pacer 
Rejection Mode is ON.
Enhancement: Pacer signals within the range ±6 mV and 
±700 mV (RTI) amplitude with a maximum 
rise time of 100 μs and with duration in the 
0.1 ms to 2.0 ms range are enhanced on the 
display when the Pacer Enhancement Mode 
is turned ON. 
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