Performance Characteristics
4-4
Force EZ-C Series Service Manual
Audio Volume
The audio levels stated below are for activation tones (bipolar, cut, and coag) and
alarm tones (REM and system alarms) at a distance of one meter. Alarm tones
meet the requirements for IEC 60601-2-2 and AAMI HF18.
Activation Tone
Alarm Tone
REM Contact Quality Monitor
REM current is measured according to IEC 60601-1, Ed. 1988, Figure 15.
Acceptable Resistance Range
REM resistance measurements are ± 10% during RF activation and ± 5% when
RF output is not activated.
REM patient return electrode: 5 to 135 ohms or up to a 40% increase in the initial
measured contact resistance (whichever is less)
Patient return electrode without the REM safety feature (single section electrode):
0 to 20 ohms
If the measured resistance is outside the acceptable range(s) noted above, a REM
fault condition occurs.
Volume (adjustable)
45 to
≥
65 dBA
Frequency
Bipolar: 554 Hz
Cut: 440 Hz
Coag: 554 Hz
Duration
continuous while the generator is activated
Volume (not
adjustable)
≥
65 dBA
Frequency
440 Hz
Duration
250 to 500 ms. The pulse train is repeated for REM
and dosage error alarms at 30 second intervals.
Measurement
frequency
80 kHz ± 10 kHz
Measurement current
< 10 µA
