Simpson 650 - Page 15

OPERATING INSTRUCTIONS
NOTE
If the transistor has long leads, it may be
more convenient to use test leads and the
three jacks marked E, B, and C (see figure
4).
2. Set the FUNCTION switch to the posi-
tion corresponding to the type transistor being
tested. The meter pointer will move near mid-
scale.
3. Adjust the BAT. ADJ. control for an
exact mid-scale indication; i.e., a meter reading
of 25 on the 0-50 D.C. scale.
NOTE
If the pointer cannot be positioned to mid-
scale, check for weak batteries.
4. Set the BETA switch to the ZERO
position.
5. Allow a few minutes for the transistor
to temperature-stabilize.
6. Rotate the ZERO ADJ. control for a
zero indication on the 0-50 D.C. scale, If the
meter cannot be made to zero, set the ZERO ADJ.
push-pull switch in its PULL position and repeat
the zero adjustment.
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