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TM 55-4920-383-13&P
(2) Set DISPLAY SELECT switch (8, figure 2-1) to RES (MEG) and RESISTANCE
RANGE switch (12) to LOW TEST position. Check that digital
megohm.
(3) Set RESISTANCE RANGE switch (12) to HIGH TEST
display (7) reads 0.1000
position. Check that digital
display (7) reads between 0.9400 and 0.9600 megohm.
(4) Set test fixture switch S1 (fig. 1-2) to position 1. Perform resistance range
checkout by setting test fixture switches S2 and S3 and RESISTANCE RANGE switch
(12, figure 2-1) to position listed for tests 1 through 17 of table 4-3. Check that digital
display (7) reads between minimum and maximum values listed in table 4-3 for each test.
(5) Set RESISTANCE RANGE switch (12) to 1-10 position. Set test fixture switch S2
to position 2 and S1 to position 1. Check that digital display reads 0.000 with underrange
blinking.
(6) Set test fixture switch S2 to position 6. Check that digital display reads 9.900
megohms with overrange blinking.
(7) Set RESISTANCE RANGE switch (12) to 1K-10K position and RESISTANCE FUNC-
TION switch (11) to A-C position. Set test fixture switch S2 to position 10 and S3 to position 2.
Check that digital display (7) reads between 4000 and 6000 megohms.
(8) Set RESISTANCE FUNCTION switch (11) to A-GND position. Set test fixture
switch S3 to position 3. Check that digital display reads between 4000 and 6000 megohms.
(9) Set RESISTANCE FUNCTION switch (11) to B-GND position. Set test fixture
switch S3 to position 4. Check that digital display reads between 4000 and 6000 megohms.
(10) Set RESISTANCE FUNCTION switch (11) to C-GND position. Set test fixture
switch S3 to position 5.
Check that digital display reads between 4000 and 6000 megohms.
(11) Set RESISTANCE FUNCTION switch (11) to EXT RES position.
switch S3 to position 6. Check that digital display reads between 4000 and
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Set test fixture
6000 megohms.
4-11
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