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Acutime 2000 Synchronization Kit User Guide F-11
F Theory of Operation
Figure F-1 Acutime 2000 Block Diagram (RS-232 Version)
Figure F-2 Acutime 2000 Block Diagram (RS-422 Version)
Microcontroller/
GPS Receiver
ASIC
Preamp
Internal Patch Antenna
Switching Power Supply
RF In Tx
Rx
Tx
PPS Out
Event In
Port A
Port B
Vcc
RF
ASIC
Flash
EPROM
RAM
TCXO
12.504MHz
Clk In
MCU Bus
4
9
1
7
2
Port B Tx
Event In / Port A Rx
PPS Out (+)
PPS Out (-)
DC Power In
Ground
Acutime 2000
12-Pin
Connector
Port B Rx
Port A Tx
Rx
11
12
6
VBack8
Backup
Voltage
Microcontroller/
GPS Receiver
ASIC
Preamp
+
-
+
-
Internal Patch Antenna
Switching Power Supply
RF In Tx
Rx
Tx
PPS Out
Event In
Port A
Port B
Vcc
RF
ASIC
Flash
EPROM
RAM
TCXO
12.504MHz
Clk In
MCU Bus
5
4
9
1
12
11
6
7
8
10
2
3
Port B Tx(+)
Port B Tx(-)
Port B Rx(+)
Port B Rx(-)
Port A Tx(+)
Port A Tx(-)
Event In / Port A Rx (+)
Event In / Port A Rx (-)
PPS Out (+)
PPS Out (-)
DC Power In
Ground
Acutime 2000
12-Pin
Connector
Rx