Cosman G4, Service Manual

Page: 24 / 115

Cosman G4 Radiofrequency Generator Service Manual (SPI
11291
Rev A)
Section 7
7.1 Electrode Setup Settings
The Electrode Setup settings determine which electrode output connections (Section 2.1) are to be
delivered Stimulation, Thermal RF, and/or Pulsed RF output.
•
RF Type : This setting determines the polarity of active electrode output connections.
•
Standard:
(a.k.a. "Monopolar") A Reference Ground Pad must be used for return Currents from
active electrodes flow into Reference Ground Pad Connection (G).
•
Bipolar
: Return Currents flow from active electrode output connections into other active
electrode output connections. Connections 2 and 3 are at reference potential in this
configuration. Voltage, Current, and Impedance readings are displayed for “Bipolar Pairs” of
electrodes, i.e. “Electrode 1+2” and “Electrode 3+4”, of which one is at reference potential and
the other is at potential indicated by the displayed Voltage reading.
•
Active Electrodes : The number of electrode output connections to which active electrodes should
be attached.
•
Labels: Text may be assigned to each electrode if RF Type = Standard, and to each bipolar
electrode pair if RF Type = Bipolar. Labels are displayed on the Stimulation, Thermal RF, and
Pulsed RF screens, and are logged to the Summary Record.
The current Electrode Setup settings are indicated using the following labeling in the upper-right corner of
the Stimulation, Thermal RF, Pulsed RF, and Notes screens, as well as in the Summary Record.
RF Type
Active
Electrodes
Electrode Setup Indicator
Standard 1 One Electrode
Standard 2 Two Electrodes
Standard 3 Three Electrodes
Standard 4 Four Electrodes
Bipolar 2 Two Electrodes: One Bipolar Pair
Bipolar 4 Four Electrodes: Two Bipolar Pairs