Cambium Networks Force 4600C User Manual

Chapter 2: System Hardware
78
ePMP 4600 Access Point heater
At startup, if the ePMP 4600 AP module temperature is at or below 32°F (0°C), an internal heater is
activated to ensure that the device can 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 the 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 in Table 25.
Table 25 ePMP 4600 Access Point startup times based on ambient temperature
Initial Temperature
Startup time (from power on to operational)
-22°F (-30°C) H
20 minutes
-4°F (-20°C)
6 minutes
14°F (-10°C)
2 minutes, 30 seconds
ePMP 4600 Access Point wind loading
Ensure that the device and the structure on which it is mounted are capable of withstanding the
prevalent wind speeds at a proposed ePMP site. Wind speed statistics are available from national
meteorological offices.
The device and its mounting bracket are capable of withstanding wind speeds of up to 200 kph
(124 mph).
Wind blowing on the device will subject the mounting structure to significant lateral force. The
magnitude of the force depends on both wind strength and the surface area of the device. Wind loading
is estimated using the following formulae:
Force (in kilograms) = 0.1045aV
2
Where:
Is:
a
the surface area in square meters
V
wind speed in meters per second
Force (in pounds) = 0.0042
Av
2
Where:
Is:
A
the surface area in square feet
V
wind speed in miles per hour
Applying these formulae to the ePMP device at different wind speeds, the resulting wind loadings are
shown in Table 26 and Table 27.

Cambium Networks Force 4600C Specifications

General

Brand	Cambium Networks
Model	Force 4600C
Category	Network Hardware
Language	English