Simpson 1000 - Page 27

OPERATING INSTRUCTIONS
turn the instrument on. Set the control for a meter in-
dication at ADJ. LINE.
4. Turn the roll chart with either wheel until the settings
for the tube show through a plastic window. If there is
more than a single test shown for the tube, use the first
listing for the first test. Find obsolete and seldom-used
tubes in the list at che back of the manual.
5. Set the FILAMENT, BIAS, and RANGE controls and all
twelve TOGGLE switches in the positions shown in the
chart listing.
6. Plug the tube into the socket which matches its base.
If the rectangular sub-miniature socket is used, turn the
tube so its red index matches the red dot. Insert its
leads in each successive socket terminal, beginning at
the red dot. If there is a top or side cap on the tube,
connect the cap clip to it. If there are two caps on the
tube, use the special cap lead for the second cap con-
nection. Notes on the chart will tell how to do this.
7. Allow a warm-up period, to heat the filament of the
tube.
8. Press the push buttons listed under SHORTS on the
chart. Press one at a time, and read each leakage re-
sistance or short indication on the OHMS scale of the
meter. Discard any tube which shows too low a resis-
tance on any of these tests.
‘9. Press the push button (or buttons) listed on the chart
under VALUE.
10. Press the LINE TEST push button. Reset the LINE AD-
JUSTMENT control if necessary to make the meter read
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