Clear-Com Tempest900 - Manual (Page 30)

24 Tempest®900 2-Channel Wireless Intercom System
Power Connections
The Tempest BaseStation can be powered from AC or DC power. The front panel ON/OFF switch controls AC and DC power
coming into the BaseStation. If AC and DC are both connected, the DC will act as a power supply backup in the event AC
power is interrupted.
AC Power Connection
» Always connect the power cord to the Tempest BaseStation 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 BaseStation from DC power, you must provide an appropriate DC power input cable.
» The DC power input jack on the BaseStation 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 BaseStation will draw approximately 12 Watts (990mA at
12VDC).
Powering ON the BaseStation
Plug in the BaseStation.
Turn the front panel ON/OFF switch to the ON position.
The BaseStation 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 lasts 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 use.