REM Test Procedure
Maintenance Procedures
Force 2 Service Manual 6-7
Important
Monopolar Patient Return RF Leakage
Connect the 200 ohm load and RMS voltmeter in series from PATIENT
receptacle to chassis ground, connect a 30 pF capacitor between active
accessory and chassis ground.
a. Activate cut at 15 W and note leakage current. Increment the
setting by 5 W until 25 W is reached and ensure that the hot spot
between the incremental settings is less than 150 mA. Adjust R61
as needed to control leakage. Increase power settings to maximum
power.
b. Select blend 3 and activate to 25 W and note leakage current.
Increment setting by 5 W until 45 W is reached and ensure that the
hot spot between the incremental settings is less than 150 mA.
c. Select coag and activate at 10 W and note leakage current.
Increment setting by 5 W until 25 W is reached and ensure that the
hot spot between the incremental settings is less than 150 mA.
Increase to maximum power.
Use short leads on all connections.
Record readings at maximum power
settings in cut and coag.
Monopolar Accessory Active RF Leakage
Connect the 200 ohm load and RMS voltmeter in series from accessory
active to chassis ground and connect a 30 pF capacitor between PATIENT
receptacle and chassis ground.
REM Test Procedure
1. Connect a variable resistance across the two pins within the Patient
receptacle using a REM-type connector.
2. Set the resistance to 135 ohms and adjust R11 for the highest possible
voltage on TP3.
3. Turn R15 counterclockwise until EREM is below 4 V. Turn R15
clockwise until REMFT (TP5) goes high (5 V).
4. Monitor REM PW (TP2) and adjust R16 until one period of square
wave is 10 ms ± 0.5 ms. Decrease the resistance to 50 ohms.
5. Increase the resistance gradually and record the value at which the
REM alarm turns on (70 ohms ± 10 ohms). Decrease the resistance and
note that the REM alarm again turns off.
6. Decrease the resistance and record the value at which the REM alarm
again turns on (5 ohms ± 2 ohms).
Repeat above test setup not using a REM-type connector. Set the variable
resistance to 5 ohms. Note that the REM alarm is off. Gradually increase
resistance and record value at which the REM alarm turns on (less than
24 ohms). The REM alarm should remain off below this value and turn on
again if above this value.
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