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Page Title:
Time delay and latching circuit |
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|  MIL-P-62341/1A
3.5.6 Relay operation.
Not applicable.
3.5.7 Transient voltage characteristics. With 1.0 0.5 mA applied
thorugh a 2.4 K 10% ohm resistor to P1-17 (positive) and P1-15 (ground),
the voltage from pin P1-17 (positive) to P1-15 (ground) shall be 39 3 V dc
(see 4.8.4.8).
3.5.8 Time delay and latching circuit.
3.5.8.1 Class 2. With a 24 6 V dc power source applied through an
MS25237-387 test lamp to P1-28, and through a second MS25237-387 test lamp to
P1-12, and with the 24 6 V dc power source connected to P1-19 and the power
source return connected to P1-15 (for a 10 second period), the two test lamPs
shall not Illuminate. With the power source connected to P1-27 (for a 5 1
second period) and the power source return connected to P1-15, both test
lamps shall illuminate and remain illuminated. Momentary interruption of the
24 6 V dc power source to P1-19 shall cause both test lamps to extinguish
(see 4.8.4.10).
Not applicable.
3.5.9 Fire warning circuit.
4.8 Methods of inspection.
4.8.3 Weight. Conformance to 3.4.2 shall be determined by weighing the
printed circuit card on a scale.
4.8.4.4 Diode circuit characteristics.
4.8.4.4.1 Diode circuits. To determine conformance to 3.5.3.1.1 and
3.5.3.2.1, utilizing a power supply of 0.5 0.05 A individually to each of
the positive pins of tables I or II. With the multlmeter verify that the
voltage measured between each positive pin and P1-17 (ground) is 0.7 to 1.3
v dc.
4.8.4.4.2 Reverse leakage current (Class 1). To determine conformance
to 3.5.3.1.2, a multimeter shall be used to measure leakage current in the
reverse direction.
4.8.4.5 Blocking diodes. To determine conformance to 3.5.4.1 and
3.5.4.2, utilizing a power supply apply 24 + 6 V dc through an MS25237-387
lamp to (each) positive pins P1-2 and P1-5. Connect the power source return
to P1-17 (ground) and verify that only the lamp at P1-2 illuminates.
4.8.4.6 Resistors. To determine conformance to 3.5.5, the power supply
of 4.8.4.1 shall be used to apply 24 1.0 V dc across P1-19 and each of the
pins specified in tables III or IV. Connect a multimeter of 4.8.4.1 in
series with the individual resistor pins under test and the return lead of
the power supply. verify the current flowing through each resistor is 37
7.0 mA.
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