Trap current limiting problem on the AutoSpec 1 - WKB96173
Article number: 96173
SYMPTOMS
- The EI trap regulating current may regulate correctly but then drops shortly after; the filament current increases to maximum, and the emission current increases; the electron energy remains constant at the set value
- CI control of the source/filament works correctly
ENVIRONMENT
- AutoSpec Premier
- AutoSpec Ultima
CAUSE
Poor connection on the outer source trap wiring.
FIX or WORKAROUND
- The wire connecting the Outer Source trap contact to the Contact Rail, left-hand rail - contact 4, is loose
- Verify push fit of the Cambion connector on the contact ring, LHS positon 4, underneath the outer source assembly.
- Check the M1.6 screw/nut connection securing the copper wire to the trap contact itself. It should be tight with no play in the connection.
- Tighten as necessary with care. Small thread, 1.6 mm. Nut size across the flats, 3.2 mm.