Simpson 1000 - Page 9

TUBE INFORMATION
perform the following steps:
1. Connect the correct voltage source and value to each
tube socket terminal for the tube which you will test.
2. Establish the meter sensitivity to provide a percentage
type evaluation of tube condition.
3. Measure the inter-element leakage resistance between
adjacent tube elements.
4. Evaluate the relative operating ability of the tube under
test.
OBSOLETE AND SELDOM-USED TUBE INFORMATION
All obsolete and seldom-used tube types are listed in
the Obsolete and Seldom Used Tube Supplement, All of
the receiving tube types currently used are shown on the
latest roll chart for the Simpson Model 1000. The roll chart
is shortened because the old and seldom used tubes are
not listed together with those to which you refer every day.
The
advantage
of
shortening
the
roll
chart
is
to
permit
faster testing.
NEW TUBE INFORMATION
As new tube types are released, samples will be examined,
rated, and tested in the Simpson laboratories. Data for set-
ting the controls of Model 1000 to test these tubes will be
established.