Clear-Com Communication Systems Page 23 of 100
Tempest 2400 Wireless Intercom System
Power Connections
AC Power Connection
The Tempest base station can be powered from AC or DC (battery) power sources.
Always connect the power cord to the Tempest base station before connecting to the outlet.
Only use approved IEC AC power cords.
Only use AC power from 85 to 260 VAC at 50 – 60 Hz.
DC Power Connection (Battery)
To power the Tempest base station from DC power you must provide an appropriate DC power input
cable. The DC power input jack on the base station is a Switchcraft 722RA. The mating plug is a
Switchcraft S760 - 2.1mm x 5.5mm power plug. The connector should be wired as center positive. Always
use appropriate wire of an acceptable gauge and length for your application. The minimum recommended
wire is 26 gauge at not more than five feet. If 10 feet is required the minimum gauge would be 24.
Only use DC power from 11 to 32 VDC. The Tempest base station will draw approximately 12 Watts
(990mA at 12VDC)
Powering On the Base Station
The Tempest base station can be powered from AC or DC power. The front panel ON/OFF switch
controls AC and DC power coming into the base station. If AC and DC are both connected, the DC will
act as a power supply backup in the event AC power is interrupted.
Turn the front panel ON/OFF switch to the ON position.
The base station undergoes an initialization cycle. During this power up cycle the LEDs flash and the LCD
screen updates.
Approximately 4 seconds after turning on the power switch you will see a splash screen showing the
installed firmware version. The splash screen last approximately 6 seconds before advancing to the
normal Operation screen. If connected to a Local Area Network, the DHCP settings (IP address, MAC
address, etc) will then display until MENU is pressed to escape or until the normal timeout is completed.
The system will then display the main Operation screen and will be ready for normal use.
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