CU Medical Systems i-PAD NF1200, Руководство по обслуживанию

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Test Procedure
1. Set the load impedance from 25 Ω to 175 Ω . As most defibrillator analyzers have only 50 Ω of load
impedance, achieve the other values by varying resistances X and Y. For example, if the defibrillator
analyzer has a 50
Ω impedance, to get a total impedance load of 25 Ω , short resistance X and set
resistance Y to 50 Ω .
2. Connect the defibrillator analyzer to the i-PAD NF1200 (DUT – defibrillator under test) using banana-
type connectors (defibrillator side end – defibrillator electrode pads connector, analyzer side end –
banana-type connector).
3. Adjust the values of resistances X and Y (hereinafter to be referred as the load adjustment network) to
achieve the desired impedance load.
4. Hook the current probe to the connector between the DUT and the impedance load adjustment network.
5. Connect the high voltage probe to the connector as shown in the test setup above.
6. Set the output of the i-PAD NF1200.
7. Set the defibrillator analyzer to output a shockable rhythm.
8. Set the defibrillator analyzer to measure the energy of the DUT output.
9. Set the oscilloscope for a single sequence operation and set the trigger level accordingly.
10. Set the oscilloscope horizontal scale to 4 ms/div. Set the vertical scale so that the oscilloscope could
accommodate at least 4000 V peak to peak.
11. Turn the setup ON.
12. Press the shock button when prompted in order to deliver the shock.
After the test, there must be measurements for all the combinations in the following matrix.
Output, Energy in Joules
200
25
50
75
100
125
150
Im
pedance L
oad
Ω
175
13.
Verify that the energy of the shock delivered is within ±15% of 200 Joules.
14. Verify from the oscilloscope display that a biphasic shock waveform is delivered.