Nautel VS1 - Page 25

VS1 Operations and Maintenance Manual
Issue 3.1 2013-10-01 Page 1-7
Figure 1.1: Block Diagram - VS1 Transmitter
RF
PWB
PWB
ADC
ADC
DAC
I/O
RF IN
PWB
4
2
3
1
4-WAY
+15V +5V
B2110002 V2
USB
ARM
ASRC
CONTROL/DATA
INTERFACE
BASEBAND
"I/Q"
DSP
OCXO
ADC
IPA BIAS
PRE-AMP BIAS
PRE-AMP V
AMP
PA TEMP 1
PA TEMP 2
OUTPUT REFLD PWR
COMBINER
HEATSINK TEMP
SENSE CIRCUITRY
PA CURRENT
PA V
ADC
SENSE
HEATSINK TEMP
SENSOR 2
CONVERTER
DC-DC
CONVERTER
DC-DCDC-DC
PROCESSOR
REMOTE
ADC
DIGITAL
PLL
CONTROL/EXCITER PWB
PRE
IPA FWD PWR
OUTPUT FWD PWR
IPA
INTERFACE
+48V
4-WAY
SPLITTER
SENSOR 1
POWER AMPLIFIERS
COMBINER
FAN x 3
SECTION
FILTER
HARMONIC
+5V
AC POWER SOURCE
(180-264VAC)
10MHz TCXO
10MHz
EXTERNAL
INTERFACE
SELECT
PROCESSOR
ETHERNET
AUDIO PLAYBACK/
AES/EBU
SCA/RDS
HIGH SPEED
AUDIO
COMPOSITE
DUC + DAC
AUDIO INPUTS
SCA GENERATOR
1PPS
SERIAL CONSOLE
RDS/RBDS DATA /
REMOTE I/O
(OPTIONAL)
PA POWER SUPPLY
+15V
FAN V
+5V-A
CURRENT SAMPLE
CONTROL/MONITOR I/O
FAN V
PA BIAS 1
IPA V
STAGE 2
RF OUT
FILTER
+48VDC
DISTRIBUTION PWB
CURRENT
CONTROL/MONITOR I/O
CONVERTER
+7-53VDC
POWER AMPLIFIER
RF SAMPLE
RF MONITOR
1-PHASE
INPUT
(OPTIONAL)
STREAMING
COMPOSITE
OSCILLATOR
QUADRATURE
ANALOG L & R /
PILOT OUT
USER INTERFACE
AUDIO
PROCESSOR
POWER SUPPLY
PRE-AMP V
+5V-B
FAN TACH x 3
BANDPASS
BLOCK DIAGRAM - VS1
POWER SUPPLY
CIRCUITRY
IPA/PRE-AMP
RF OUT