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TM 55-4920-383-13&P
RESISTANCE RANGE switch position
Overrange blinking number
0.1-1
.9900
1-10
9.900
10-100
99.00
100-1K
990.0
1K-10K
9900
10K-100K
99000
(2) The Test Set, in the insulation resistance measurement mode, also indicates an
underrange condition when the resistance being measured is less than the range as selected
by the RESISTANCE RANGE switch (12). The underrange condition is indicated by a
blinking display. The blinking condition for each position of the RESISTANCE RANGE
switch (12) is as follows:
RESISTANCE RANGE switch position
Underrange blinking number
0.1-1
.0000
1-10
.000
10-100
.00
100-1K
.0
1K-10K
0.
10K-100K
00.
(3) The combined overrange blinking and underrange blinking indication force the
Test Set operator to automatically position the RESISTANCE RANGE switch (12) in the
correct position for measuring the unknown resistance. For overrange blinking, the
RESISTANCE RANGE switch (12) must be rotated clockwise to obtain a resistance reading
and for underrange blinking the RESISTANCE RANGE switch (12) must be rotated counter-
clockwise to obtain a resistance reading.
2-15
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