Compliance West MegaPulse D5-PF, Instruction Manual

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1. Measure the energy with open circuit (No DUT connected to the D5-PF)
2. Measure the energy with the DUT connected on the output.
3. Subtract the two energies measured on steps 1 and 2, and the difference on these two readings must not
exceed the % established on the standard that the user is following.
Energy Measurement with an External Acquisition System
The MegaPulse D5-PF tester is equipped with two high voltage connectors located on the rear panel to have access
directly to the 100

resistor, allowing energy measurements with an external high voltage acquisition system. The
acquisition system must be capable of executing the advanced mathematical formula shown on figure 8. Figure 9
shows an example of how connect the external acquisition system.
Figure 9. Energy Measurement with an External Acquisition System
Measurement Terminals Y1 and Y2
There are two BNC jacks on the front panel of the D5-PF, labeled Y1 and Y2. These are used to verify that the Applied
Part or Chassis of the Equipment Under Test does not exceed 1 Volt peak in accordance with IEC/EN/UL 60601-1.
A marginally failing product will cause the voltage on the oscilloscope to rise to 1 Volt (ref. 60101-1 clause 17h).
Note that this voltage does not have the same wave shape as the defibrillation pulse. The measurement point has a
voltage rise time constant of 2 mS (derived empirically). The decay time of the measurement point is driven by the
impedance of the oscilloscope, which is typically 1 MΩ. In this case, the decay time would have a time constant of 1
second. When testing using the math function, the time base should be set at 500mS/division. If a smaller time base
is used, there could be transient noise on the waveform.
Pass Fail Reference Built in
The Pass Fail Reference Built in circuit is designed to allow the user perform a quick check test of the Y1-Y2
measurement system of the D5-PF tester.
To perform a quick test using the Pass Fail Reference Build in follow the next steps:
1. Set the Pass Fail switch to the ON position.
2.
Set Aux output switch to “Return” position.
1000:1 HV Probe