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Three basic oscilloscope systems were employed for recording the alpha signal: a 100-ohm three scope system, a
100-ohm two scope system,
and a 120-ohm three scope system.
Other combinations were used from time to time as the requirements of individual shots dictated.
Three types of
4ndicators (Rossi, linear, and creep-Rossi), together with
their power supplies and associated test equipment, were
rack-mounted in the blockhouse instrumentation room.
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EG&G oscilloscopes, types 3343 and 3445, were the basic ur‘‘s
in the system; however, they were supplemented by a number of
other commercial units.
,
The alpha stations were operated from three timing ‘gignal
originating at the
Control Point: a - 30 minute signal,
which provided the AC power; a -15 minute signal, which’ turncc
on the high voltage; and a -1 second signal, which activated
relays to open camera shutters and arm each oscilloscope,
GO, NO-GO circuitry was used to provide an interlock against
failure of the equipment or of the power supply.
Results.
-
Records of ‘the oscilloscope traces were analyzed by means
of precision comparators and the data obtained were reduced
for reporting purposes on an IBM 704 EDPM Computer.
The
detailed results, by shot, are included in reports issued by
EG&G at the Eniwetok Proving Grounds; these reports are listed
in Table 6,
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