Simpson 2 Series - Page 7

General Description
set at -D.C. or +D.C., depending on the polarity of curren
or voltage. Reversing the test lead connections without
removing them from the circuit under test is accomplished
by using the function switch.
ZERO OHMS
The control at the lower right on the panel is marked ZERO
OHMS. This variable resistance in the ohmmeter circuit is
used to compensate for the aging of the internal batteries.
Use it to adjust the meter indication to zero (at the right
end of the scale) with the test leads shorted together
whenever the ohmmeter circuit is used.
CIRCUIT JACKS
There are eight jacks, two being located in each corner of
the front panel. These are the connection points for the
test leads. Plug the prods of the test leads into the proper
jacks to obtain the circuit and range desired for each
application.
At the lower left are COMMON- and * jacks. These are
the jacks that will be used most. Connect the black test
lead to COMMON- for all circuits and ranges except 10
amperes D.C. Connect the red test lead to the + jack for
all circuits and ranges except those designated by the
other circuit Jacks.
Across the top of the panel are jacks marked -10 A.,
OUTPUT, 50uAMPS, and +10 A. For all audio frequency
output voltage ranges, use the red test lead connected to
the OUTPUT jack. For the 50 microampere or 250 milli-
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