Tait TB7100 Service Manual

30 Functional Description TB7100 Service Manual
© Tait Electronics Limited October 2005
The PROG/MIC connector may be used for the connection of a handset or
programming lead. The T
X/RX switch changes the LCD display to
transmitter or receiver, it also determines which board will be programmed
by the programming or calibration applications.
The function keys may have functions assigned to both short and long key
presses. A short key press is less than one second, and a long key press is more
than one second.
Connectors and
Circuit Boards
There is an 18-way electrical interface between the UI board and the
transmitter module, and another from the UI board to the receiver module.
The physical connection is via two 18-way ribbon cables. The internal
speaker is connected to the UI board via a lead with a mating connector so
that it can be easily disconnected.
Figure 3.6 UI board high-level block diagram
Volume Control
Speaker
connector
Receiver
Transmitter
Fan Power
TXD
RXD
PTT
Mic Audio
Microphone and
Programming Jack
Programming Data
and Microphone
Mic Aud
PTT
TXD
RXD
Function Switch
and LED Control
Audio
Speaker
Volume Control
LEDs and
Function Switches
Programming
Switch
3v3
13v8

Tait TB7100 Specifications

General

Brand	Tait
Model	TB7100
Category	Accessories
Language	English