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MIL-DTL-62545 Module, Standard Electronic ControlThis specification covers the Module, Standard Electronic Control \(MSEC\), a component of Halon 1301 fire extinguishing systems used in military vehicles. The MSEC continuously monitors the system condition. Upon receipt of a fire signal, it issues crew warning and extinguisher discharge commands.

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MIL-DTL-62545E
1/ 2 kΩ, 0.5 watt resistor.
FIGURE 3. Harness variations for one to four OFSA systems.
3.3.10 Voltage characteristics. The MSEC shall meet the requirements of MIL-STD-1275 without sustaining loss
of effectiveness or causing damage or malfunction to any components which could result in loss of system
effectiveness (see 4.6.5).
3.3.10.1 Input power. The MSEC shall be effective over an input voltage range of 16 to 30 V dc and shall not
require more than 40 A when active or more than 140 mA during quiescent operation (see 4.6.5.1).
3.3.10.2 Start-up. The MSEC shall not false alarm (generate extinguisher drive signals, fire warning signals, or
ventilation fan activation signals) upon the application of 16 to 30 V dc step inputs to pins A and N of connector J1
(initial power-on condition) (see 4.6.5.2).
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