Figure 17.2 Multi-Reciter Control Panel High Level Block Diagram - Tait TB8100 Service Manual

Figure 17.2 Multi-reciter control panel high level block diagram
Switched
Signals
to subrack
interconnect board
via 26-way D-range
Fixed
Signal Lines
TB8100 Service Manual
© Tait Electronics Limited September 2006
Open Collector RS-232
RS-232
Translation
Microphone
Microphone Audio
Pre-emphasis
& Gain Control
2
I C Bus
I C
Translation
Fan Rotation
Speaker Audio
Channel Select
V , GND
Power
IN
Supply
Reciter Counter
Channel LED
Control &
Channel LED Signalling
Decoding
RS-232 Bus
Speaker
Enable
Speaker
2
Volume &
Gain Control
Control Panel Circuit Description
RS-232
Connector
Microphone
PTT
Connector
Control
Panel Type
Speaker
Monitor LEDs
& Switches
Channel LEDs
275