Connect an oscilloscope at EZ119 X7 large focus or X5 small focus
and monitor the filament current behavior. Set kV-mA-ms technique
with 50% of the max mA value at any kV value with an exposure time
of 50ms. Any deviation between mA_set and mA_measured will cause
a reaction in the filament current. If mA_measured is lower compared
to mA_set the filament current will rise (up to filament max), if
mA_measured is higher compared to mA_set the filament current will
drop down to min 0.5A.
Check the mA measuring circuit in standby against oscilloscope
screenshotma_pulse.pcx.
If warnings appear during normal work and if the tube has not been
adapted for long time carry out the Tube
Adaptation Procedure.
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