Calibrating the Generator
Setup, Tests, and Adjustments
Force FX-8C Service Manual 5-35
Checking the Reactance Gain for Bipolar Output
1. Connect the test equipment for bipolar output.
a. Connect the two test cables to the Bipolar receptacle.
b. Pass one test cable through the current transformer and connect the
current transformer to the voltmeter.
c. Connect the 30 ohm resistor across the output jacks at the end of the
test cables.
d. Connect the bipolar footswitch to the Bipolar Footswitch
receptacle.
2. Adjust the Z factor for bipolar output.
a. Press the Standard button.
b. Press the bipolar footswitch pedal and check the voltmeter for a
reading equivalent to 1250 ± 12 mA rms.
c. Stop activation. If the output current reading was too high, lower
the Z factor. If the reading was too low, raise the Z factor.
To change the Z factor by ones, press the Coag up (∆) or down
(∇) arrow buttons. To change it by hundreds, press the Cut up (∆)
or down (∇) arrow buttons.
Repeat this step until the voltmeter reading is within the stated range.
The Z factor for the Precise and Macro modes is adjusted
automatically.
3. Disconnect the test cable and remove the 30 ohm resistor.
Checking the Reactance Gain for Monopolar Output
1. Connect the test equipment for monopolar output.
a. Connect one test cable to the left jack in the Monopolar 1/CEM
Instrument receptacle. Pass the test cable through the current
transformer and connect the current transformer to the voltmeter.
b. Use a test cable to short the two pins on the Patient Return
Electrode receptacle.
c. Connect the second test cable from the voltmeter to both pins of the
Patient Return Electrode receptacle.
d. Connect the 200 ohm resistor to the test cables through the current
transformer for monopolar output.
e. Connect a monopolar footswitch to the Monopolar 1 Footswitch
receptacle on the rear panel.
2. Adjust the Z factor for the Low and Pure cut modes.
a. Press the Pure button.
b. Press the footswitch cut pedal and check the voltmeter for a
reading equivalent to 949 ± 3 mA rms.
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