Valleylab Force FX-C - REM Contact Quality Monitor

Performance Characteristics
3-4
Alarm Tone
Frequency 660 Hz
REM Contact Quality Monitor
REM current is measured according to IEe 601-1, Ed. 1988, Figure 15.
Measurement frequency: 80 kHz ± 10 kHz
Measurement current: < 10 pA
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. For more information, refer to the REM
Contact Quality Measuring
System in Section 4.
REM Alarm Activation
REM patient return electrode: When the measured resistance exceeds the
standard range of safe resistance (below 5 ohms or above 135 ohms) or
when the initial measured contact resistance increases by 40% (whichever
is less),
the REM Alarm indicator flashes red, a tone sounds twice, and RF
output is disabled. The indicator remains illuminated red until you correct
the condition causing the alarm. Then, the indicator illuminates green and
RF output is enabled.
Patient return electrode without the REM safety feature: When the measured
resistance between the patient return electrode pins exceeds 20 ohms, the
REM Alarm indicator flashes red, a tone sounds twice, and RF output is
disabled. The indicator remains illuminated red until you correct the
condition causing the alarm. Then, the red indicator is extinguished and
RF output is enabled.
Force FXTM-C Service Manual