Boston Scientific RF 3000 Gebrauchsanweisung Seite 14

PoweR accuRacy teSt
CAUTION! To protect the test equipment, ensure that the electrosurgical analyzer
can dissipate 200W at 100% duty cycle.
The only active socket in the electrode receptacle is the center one; the three
peripheral sockets are for future use. Also, both pins of each of the four return
receptacles (8 pins total) are electrically common with all the other pins.
For each return pad receptacle, the current is limited to 0.79 A . Therefore,
rms
measuring the maximum power output of the generator will require separate loads
(100Ω to 400Ω each) connected in parallel to each return receptacle. If just one
load is connected to all four return receptacles, then even a small difference in
lead resistance between each return receptacle and the load can cause greatly
different currents to flow which can create an over-current condition (P-x error) before
maximum output is attained. One method for testing power accuracy at 200W is
to use four non-inductive 100Ω loads connected between the active receptacle and
each return receptacle. (The generator sees 25Ω in this configuration.)
Alternatively, a lower power level into a single 100Ω load can be used to test
power accuracy. Refer to the Technical Specifications section for power
accuracy specifications.
eRRoR teStinG
The "Recoverable" errors (E01, 02, 03, P-x) may be tested, as outlined below. The
"Unrecoverable" errors cannot be tested, since the conditions that lead to these
errors are difficult to replicate.
"E 01" indicates that the initial impedance is below 15Ω. If a 10Ω load is connected
between the active receptacle and one of the return receptacles, this error will be
displayed in the Power window after the START button is pressed. The Impedance
display will flash "LO" and the bar elements will flash until the RESET button
is pressed.
"E 02" indicates that the initial impedance is above 400Ω. This error can be tested
by pressing the START button with an open circuit between the active and return
receptacles. The Impedance display will flash "HI" and the bar elements will flash
until the RESET button is pressed.
"E 03" indicates that impedance is over 4000Ω. To test this error, connect a 50Ω
load, increase power to 10W, then disconnect the load. The Impedance display will
flash "HI" and the bar elements will flash until the RESET button is pressed.
"P-x" indicates that excessive current is flowing through return receptacle "x" .
To test this error, connect a short circuit from a return receptacle to the active
receptacle and press the START button. The error will immediately be displayed
since an RF current flows before the power increment button is pressed to measure
the initial impedance. Repeat this test for each return receptacle.
leakaGe cuRRent teStinG
Every generator is tested for leakage currents at 132V~ for the 115V~ model or
264V~ for the 230V~ model.
caSe leakaGe
Case (or "enclosure") leakage current is measured between the metal enclosure and
mains ground, with the safety ground open, at both normal and reverse polarity
of mains voltage. Case leakage must be below 100µA.
SouRce leakaGe, aPPlied PaRt
Source leakage current (or "patient leakage source current") is measured between
mains ground and all output receptacles, with the safety ground open, at both normal
and reverse polarity of mains voltage. Source leakage must be below 10µA.
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