How does the boot-up circuitry work in cold temperatures?

Integrated Module heater

Upon power on, if the ePMP integrated module device temperature is at or below 32° F (0° C), an internal heater is activated to ensure that the device is able to successfully begin operation. The unit’s heater is only activated when the unit is powered on and will not apply heat to the device once startup is complete. When the unit temperature is greater than 32° F (0° C), the heater is deactivated and the integrated module continues its startup sequence.

The effect on integrated module startup time at various temperatures is defined below:

Initial Temperature

Startup time (from power on to operational)

-22° F (-30° C)

4 minutes

-4° F (-20° C)

2 minutes

14° F (-10° C)

1 minutes, 30 seconds

Un-synced Connectorized Radio heater

On startup, if the ePMP un-synced connectorized radio temperature is at or below 32° F (0° C), an internal heater is activated to ensure that the device is able to successfully begin operation. The unit’s heater is only activated when the unit is powered on and will not transfer heat to the device once the startup completes. When the unit temperature is greater than 32° F (0° C), the heater is deactivated and the unit continues its startup sequence.

The effect on device startup time at various temperatures is defined below:

Initial Temperature

Startup time (from power on to operational)

-22° F (-30° C)

20 minutes

-4° F (-20° C)

6 minutes

14° F (-10° C)

2 minutes, 30 seconds

Connectorized Module heater

At startup, if the ePMP connectorized module temperature is at or below 32° F (0° C), an internal heater is activated to ensure that the device is able to successfully begin operation. The unit’s heater is only activated when the unit is powered on and will not apply heat to the device once startup is complete. When the unit temperature is greater than 32° F (0° C), the heater is deactivated and the unit continues its startup sequence.

The effect on device startup time at various temperatures is defined below:

Initial Temperature

Startup time (from power on to operational)

-22° F (-30° C)

20 minutes

-4° F (-20° C)

6 minutes

14° F (-10° C)

2 minutes, 30 seconds

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