JOTP-053
11 March 2015
5.1.5 Test Procedure - Brownout/Surge.
a.
Perform the steps below:
(1) Monitor voltages and the test points detailed in the test plan.
(2) Allow the UUT to begin its functional mission. Apply a 50 ms brownout condition
of 20% less than the minimum specified supply voltage on one of the source supplies. This
brownout condition shall occur before the enabling of any safety features (as shown on the UUT
event timeline within the test plan).
(3) Allow the UUT to begin its functional mission.
(4) Apply a 50 ms brownout condition of 20% less than the minimum specified supply
voltage on one of the source supplies. This brownout condition shall occur after the enabling of
the first safety feature (as shown on the UUT event timeline within the test plan).
(5) Repeat steps 2 through 4 for the remaining source supplies.
(6) Allow the UUT to begin its functional mission.
(7) Apply a 50 ms surge condition of 20% greater than the maximum specified supply
voltage on one of the source supplies. This surge condition shall occur before the enabling of any
safety features (as shown on the UUT event timeline within the test plan).
(8) Allow the UUT to begin its functional mission.
(9) Apply a 50 ms surge condition of 20% greater than the maximum specified supply
voltage on one of the source supplies. This surge condition shall occur after the enabling of the
first safety feature (as shown on the UUT event timeline within the test plan).
(10) Repeat steps 6 through 9 for the remaining source supplies.
(11) Repeat steps 1 through 10 for each of the remaining UUTs.
b. Test Rationale. This test shall be conducted on electronics to evaluate their safety during
and after exposure to various intermittent stresses. The objective of this test is to determine the
effect of intermittent stresses on the safety features of the unit. The units will be subjected to a
50 ms brownout/surge of all power sources at the times specified in the test plan. It is important
to monitor the voltages in addition to the test points detailed in the test plan to verify that no safety
system failures, faults, or anomalies occur during the conduct of this test.
5.1.6 Test Procedure - Floating Input / Output (I/O).
a.
Perform the steps below:
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