Simpson 260 - Measuring Direct Currents, 0 to 50 Microamperes

OPERATING INSTRUCTIONS
le Short the test leads together and adjust for
zero ohms (see instructions above).
5. Separate the test leads and connect them
across the resistance which is to be measured.
If there is a "Forward" and "Backward" resist-
ance such as in rectifiers, switch back and
forth between the two D.C. positions of the
function switch to reverse this polarity.
NOTE: The resistance of such rectifiers will meas-
ure different values on different resistance ranges
of the 260 and 270. Thus, a crystal diode which
measures 8C ohms, for example, on the R x 1 range
may measure 300 ohms on the R x 106 range. This
is normal, and is a result of the diode character-
istic. The difference in values does not indicate
any fault in the ohmmeter.
6, Read the indication on the OHMS arc at the
top of the dial. Note that this arc reads
from right to left for increasing values.
7. Multiply the reading by the multiplier factor
shown at the switch position to obtain the
resistance value in ohms. "К" on the dial
stands for "thousand."
MEASURING DIRECT CURRENTS, O to 5C MICRCAMPERES
CAUTION: Never connect the test leads directly
across any voltage when ¿he instrument is used as
а current meter, Always connect the meter in
series with the load across the voltage source
to avoid damage.
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