Tait TB7100, Installation And Operation Manual

Page: 13 / 142

TB7100 Installation and Operation Manual Introduction 13
© Tait Electronics Limited December 2005
1.3 Power Supply Options
The base station is available with or without an internal AC power supply.
All base stations have an external DC input power connector which is used
as main power supply when no internal AC power supply is fitted.
When the internal AC power supply is fitted, the DC input can be used as
a DC backup power option. In case of AC mains failure the base station will
automatically and seamlessly switch to DC power input.
If no internal AC power supply is fitted, an external Tait T809-10-87xx
power supply can be used to supply the DC voltage required.
Warning!!
The internal AC power supply unit contains
voltages that may be lethal. Refer to the ratings
label on the rear of the base station. The internal
AC power supply contains no user-servicable
parts.
Important
Wrong mains voltage! Before connecting to the AC power
connector, ensure that the internal 115V/230V voltage
mains selector switch is set to the correct mains voltage.
1.4 Mechanical Configurations
The base station is available in two different mechanical configurations—
with or without provision for an internal AC power supply unit.
The mechanical configuration with provision for an internal AC power
supply has the following distinguishing features:
■
larger air intake on the right-hand side of the front panel
■
provision for AC connector on the left-hand side of the rear panel (refer
to
Figure 1.1 on page 11 )
■
ground point on the right-hand side of the rear panel rather than on the
left-hand side
■
different SI board and internal cables.
The mechanical configuration without provision for an internal AC power
supply unit cannot be upgraded with an internal AC power supply unit.
The product codes of the base station (see below) do not distinguish
between the mechanical configurations.