Simpson 260 Series - Measuring Semiconductor Resistance

Operation
charged. Disconnect shunted component from the circuit be-
fore measuring its resistance.
b. Set the range switch to one of the resistance range positions as
follows (Figure 4-8):
1. Use R X 1 for resistance readings from 0 to 200 ohms.
2. Use R x 100 for resistance readings from 200 to 20,000
ohms.
3. Use К. Хх 10,000 for resistance readings above 20,000 ohms.
с. Set the function switch at either -DC or + DC position:
Operation is the same in either position except if there are
semiconductors in the circuit. (See Paragraph 4.2.1) Adjust
ZERO OHMS control for each resistance range.
d. Observe the reading on the OHMS scale at the top of the dial.
Note: The OHMS scale reads from right to left for increasing
values of resistance.
e. To determine the actual resistance value, multiply the reading
by the factor at the switch position. (K on the OHMS scale
equals one thousand.)
420 RESISTANCE MEASUREMENT OF
SEMICONDUCTORS
Make sure that the OHMS range being used will not
damage any of the semiconductors (refer to Table 1-1,
item 8, Section 1).
4.20.1 If there is a "forward" and "backward" resistance such
as in diodes, the resistance should be relatively low in one direc-
tion (for forward polarity) and higher in the opposite direction.
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