User Manual

Digital Hybrid Wireless Belt-Pack Transmitter
Rio Rancho, NM
5
DBa Block Diagram
Filters
Keypad
(2) AA
Batteries
Oscillator
VCTXO
I2S
I2S
Voltage Controlled
Oscillator
Final
Amplifier
Control
PLL Ref
Phase Locked Loop
DSP Clock
Switching
Power
Supply
Microprocessor
Power
LED
Tricolor
D-A Convert-
er
A-D
Converter
Shunt
Limiter
Limiter Control
Gain
Adj
HI/Lo
Pass
Filter
Input
Preamp
Input
Jack
Bias Voltage
0, 2 or 4V
Servo Bias
Supply
+5V
I + Q
Baseband
Signals
Low
pass
filters
IQ Modulator
UART
USB
Jack
Security Key
Audio
Firmware
Update
Key Received
Blue LED
Low
Pass
Filter
Buffer
DBa Transmitter