Model 618B Sect.IV Page 13
Figure 4-8. Exploded View of Klystron Mounting Parts
3) Insert the klystron tube (6) into the cavity until 4-12 ADJUSTMENTS FOLLOWING REPLACE-
it engages the spring (8). Firmly press the tube MENT OF KLYSTRON V114
straight into the cavity at the same time giving
it a clockwise twist. The twist will cause the Following replacement of V114, it is important
spring to expand and pass the tube allowing it to that certain adjustments be made as soon as the
seat firmly in the cavity. signal generator is turned on. The following pro-
cedure ~ is recommended. Step references are
4) Tighten the retaining nut moderately with socket
steps included in trouble shooting chart.
wrench supplied.
5) Insert the clamping rings (5) making certain 1) With the signal generator removed from the
that they encircle the grid ring of the klystron cabinet and with MOD. SELECTOR on OFF, turn
which may be seen just inside the retaining nut. on signal generator.
When the rings are inpositionthreeorfour threads
2) Check the voltage of the -looo volt supply as
of the nut (7) should be visible between the clamp-
in step 2, Table 4-4.
ing rings and the outside face of the nut.
3) Check the voltage of the -585 volt supply as in
6) Thread the cover sleeve (4) into the retaining
step 4, Table 4-4.
nut so that it seats against the clamping rings,
causing the clamping ring to grip the grid ring of 4) With the MOD. SELECTOR set to CW, adjust
the klystron. Tighten the sleeve firmly by hand. the klystron cathode current (25 ma maximum) as
in step 7, Table 4-4.
7) Install the tube socket and housing (3), pressing
the socket straight into position. 5) With the MOD. SELECTOR set to OFF, adjust
the klystron cutoff bias as in step 8, Table 4-4.
8) Position socket housing. Attach capscrews (l),
and tighten with large key wrench supplied. A new klystron tube should now operate at least |
ACEC
HEWLETT-PACKARD
