MIL-T-47303A (MI)
Firing current.
The test set shall function to
3.4.1.1
indicate that a satisfactory firing signal has been received when
In addition, upon
stimulated with a proper current and time flow.
receipt of a correct firing signal the load produced in the test
set shall automatically disconnect between 10 and 14 milliseconds.
The current firing signal is defined as a current of 0.810 ampere
or greater for 10 milliseconds or longer.
The test set shall
indicate non-satisfactory condition if the stimulating signal is
less than 0.810 ampere or its duration is less than 10 milliseconds
(see 4.6.2.1).
3.4.1.2 Ground.
The test set shall provide, through the
indicator lamp and protection circuit, a current to the test leads.
It is essential that the test set shall not, under any conditions,
deliver an output current through the external circuit greater than
15 milliamperes direct current (de) (see 4.6.2.2).
3.4.1.3 Stray current test.
The test set shall function to
indicate that a "stray" signal has been received when stimulated
with a specific current and time flow.
In addition, upon receipt
of a "stray" signal the load produced in the test set shall
automatically disconnect between 10 and 14 milliseconds.
The
"stray" signal is defined as a current of 0.054 ampere or greater
for 10 milliseconds or longer.
The test shall indicate no stray
current if the stimulating signal is less than 0.054 ampere or its
duration is less than 10 milliseconds.
3.4.1.4
Test switch.
The test switch is used to check if the
test set system is operating properly.
With test leads shorted the
selector switch is placed in position 1.
The indicator lamp shall
come on and remain lit until the test switch is depressed.
When
the selector switch is placed in position 2 and/or 3 the indicator
lamp (PLI) shall not come on until the test switch is depressed.
3.4.2 Operating environments.
The MK IV electrical test set
shall comply with requirements of the applicable conditions
specified in MIL-T-21200 as listed herein and other conditions
specified in table I.
3.4.2.1
Electromagnetic compatibility.
The test set shall
meet the requirements of MIL-STD-461 with respect to conducted and
radiated emissions (see 4.6.3).
3.4.2.2 Temperature/altitude.
The test set shall operate at
all possible combinations of temperature from -40° Celsius (C) to
+71°C and altitudes from 0 to 10,000 feet.
In addition, the test
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