Measuring Of Primary Currents - Philips Optimus Manual

Converter test kit OPTIMUS for OPTIMUS 50/65/80 gen‐
erators release 3.x with converters 4512 104 7231x
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MEASURING OF PRIMARY CURRENTS

▪ Switch OFF the generator and wait 1 minute for the converter DC to be discharged.
▪ Measure with the oscilloscope:
Signals:
Optimus 50:
Establish one oscilloscope probe (signal and screen) at the current transformer secondary side.
Establish the second probe at EZ130 X3 AV_HT (actual value high voltage) and ground EZ130 X6.
Optimus 65/80:
Establish both oscilloscope probes at the current transformers secondary side.
Check that signal and ground are at the same 1 + 2 transformer connections (polarity).
Trigger:
Use external trigger negative slope with low active CTRL_X_C/ signal at EX74 (backpanel).
If a third probe for an external trigger is not available:
Optimus 50:
Use channel 2 (kV actual value AV_HT = 20kV/Volt) positive slope, trigger value according to probe divider.
Optimus 65/80:
Set the trigger point level at channel 1 or 2 according to the expected amplitudes (see charts).
Time base:
According to charts. A trigger delay time (settings see charts) can be useful to see the start of the signals.
NOTE
The following charts were made with a 100MHz oscilloscope with different magnification factors
(= time base).
▪ Switch the generator back ON.
▪ Set 40kV, 50mA, 10ms (any focus). In case the tube is not adapted set 40kV, 0.5mAs.
▪ Compare waveforms with the charts on the following four pages.
Conv test Optimus
Digital oscilloscopes sometimes display waveforms and spikes that do not exist
or only parts of the signal are displayed.
CSIP Level 1 (08.0)
© 2008 Koninklijke Philips Electronics N.V.
ALL RIGHTS RESERVED
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