MIL-S-52860 Switch, Alarm, Latching, Sa-1954/Fss-9VThis specification covers a floor or wall mounted manually operated duress switch which allows an alarm to be initiated by its operator when placed under duress. It is a component of the Joint-Services Interior Intrusion Detection System J-SIIDS.

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MIL-S-52860D

APPENDIX

TEST METHOD 3

LAS DURABILITY TEST

1.  TEST APPARATUS:

a.  DC power supply - constant output or adjustable to provide a voltage of

20  0.3 Vdc at currents up to 40 mA, load regulation <0.5%, ripple <100 mv p-p, total voltage canmge due to ambient temperature change and drift with time during the test period <0.5 Vdc.

b.                DC voltmeter - between 19 and 21 V minimum resolution 0.1 Vdc, minimum accuracy 1.5%.

c.                DC ammeter - between 10 and 30 mA, minimum resolution 0.1 mA, minimum accuracy 2%, maximum full scale voltage drop (burden voltage) 0.3 V.

d.  Ohmmeter - resolution 1 % of reading, accuracy 2% of reading.

2.  TEST PROCEDURE:

a.  Perform test method 1.

b.  Manually or mechanically activate switch S1, using the actuator.

c.  Manually or mechanically activate reset switch S2.

d.  Repeat steps b. and c. 1500 times each.

e.  Repeat test method 1.

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