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TM 55-4920-383-13&P
reads 7998.0 pF with overrange blinking.
d. Capacitance Simulation Range Checkout.
(1) Set CAPACITANCE FUNCTION switch (1, figure 2-1) to SIM SET-COMP position
(4) Rotate SIMULATORS-PROBE control (24) fully clockwise. Check that digital
and set CAPACITANCE RANGE switch (6) to 1000 pF. Rotate SIMULATORS-COMP control
(13) fully counterclockwise. Check that digital display (7) reads less than 15.0 pF.
(2) Rotate SIMULATORS-COMP control (13) fully clockwise. Check that digital
display (7) reads greater than 390.0 pF.
(3) Set CAPACITANCE FUNCTION switch (1) to SIM SET-PROBE position. Set
SIMULATOR-PROBE 0-7000 pF (22) and 0-800 pF (23) switches to 0 pF and rotate SIMU-
LATORS-PROBE control (24) fully counterclockwise. Check that digital display (7) reads
less than 15.0 pF.
display (7) reads greater than 390.0 pF.
(5) Adjust SIMULATORS-PROBE control (24) to obtain digital display (7) reading of
100.0 pF.
(6) Perform probe simulator checkout by setting SIMULATORS-PROBE 0-7000 pF
switch (22), SIMULATORS-PROBE 0-800 pF switch (23) and CAPACITANCE RANGE switch
(6) to positions listed for tests 1 through 11 of table 4-1.
Check that digital display (7) reads
between minimum and maximum value for each test listed in table 4-1.
e.
Digital Circuit and Display Checkout.
(1) Set CAPACITANCE FUNCTION switch (1, figure 2-1) to A/C TEST-UNSH position
(2) Perform high range capacitance measurement checkout by setting CAPACITANCE
RANGE switch (6) to positions listed for tests 1 through 18 of table 4-2. For each test,
4-5
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