Chapter
2 Inspection
Please inspect the EBE-1 on arrival for any damage that may have occured during trans-
port or for possible loose screws. Check that the filament is well centred on the axial
hole in the copper block. If not, it may be possible to adjust it although the filament
will be very brittle. It may need to be replaced. The clearance between the filament
and any fitted crucible or rod should be at least 2 mm. It may be necessary to make a
new filament with a diameter to suit that rod or crucible in use (see later section on fil-
aments).
The resistance from the centre pin of the MHV feedthrough (on the thimble) to ground
should be >20 M . The resistance between the centre pin of the Ω MHV feedthrough and
the rod holder should be <0.5 . The resistance between pins A and B on the four pinΩ
feedthrough should be <0.5 .The resistance between either of these pins on the fourΩ
pin feedthrough and ground should be >20 M . The resistance between the centre pinΩ
of the BNC feedthrough (on one of the angled ports) and ground should be >20 M .Ω
The resistance between the centre pin of the BNC feedthrough (on one of the angled
ports) and the flux electrode should be <0.5 .Ω
EBE-1 3
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