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|  MIL-C-50743(MU)
8 August 1973
(PFN Charge). Change the load between J2-b and J2-c from 100 kilohms
to 32.4 Kilohms and measure the output at J3-A to determine compliance
with 3. 3. 1. 9.
4.6.11 PFN voltage sensing test. Adjust the PFN voltage at J3-A
to +1200 15V, connect the microammeter listed in table XI between J5-t
and J5-e, and measure the current to determine compliance with 3.3.1.10.
4.6.12 FIRE signal test. Adjust the PFN voltage at J3-A to
+1200 200 V, and establish the input conditions for the table V items
in the items number order. Measure the corresponding ordered out-
puts at J2-e to determine compliance with 3.3.1.11.
4.6.13 Malfunction 4 signal test.
a. Adjust the PFN voltage at J3-A to +1200 200 V, and
establish the input signal conditions for the table VI items
in the items number order. Measure the corresponding
ordered outputs at J1-d to determine compliance with
3.3.l.12a.
b. Connect the 66.5 kilohm resistor (item 1.5) of table I as
specified, and measure the output at J1-d to determine
compliance with 3.3.1.12b.
4.6.14 Malfunction 2 signal test. Apply the digital type-B signals
(item 3.2) of table I, as follows:
a. Logical one to J1-f, J1-h, and J1-AA
b. Logical zero to J1-e, J1-g, and J1-z_
c. Logical zero to J1-q.
Then apply a momentary logical zero to J1-t, and measure the output
at J1-c to determine compliance with 3.3.1.13. Repeat application of
signals as specified in (a), (b), and (c), and then apply a logical on
and a logical zero simultaneously to J1-z and J1-AA, respectively,
and measure the output at J1-c to determine compliance with 3.3.1.13.
4.6.15 Continuity test. Remove the primary power and perform
resistance measurements between terminal pins as listed in table VII,
to determine compliance with 3.3.1.14.
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