Meteor Communications Corporation MCC-545C, Operation And Maintenance, Page: 17 / 88

DESCRIPTION 2-12
O&M of the MCC-545C PACKET DATA RADIO
12/2000
MCC 545C BLOCK DIAGRAM
FIGURE 2.2
OPTION
GPS
4.192
PROCESSOR
NB ENABLE
ANT 54505304-01 MHZ
BPSK TRANSCEIVER
OSC
GPS
PIC 54506303-01
NOISE BLANKER
PCI BUS
MICRO
CONTROL
CONTROL
TO SYNTH 2ND IF 14.2 MHZ
RS 232 CERAMIC
LOG
ONE
COMP
PROCESSOR
VCXO
2 ND IF TP FILTER AMP SHOT
4 OPER
CTL
0
LPF LBPF
DATA QUAD GATE
4.2 MHZ
FC=50 MHZ 10.7 MHZ
1 39-50 MHZ
USART
AUX
A1
LIMITED COSTAS 2
RX DATA
A1 BPF1 BPF2
CERAMIC
FIRST IF 10.7 MHZ
USART FILTER RX CLK
CERAMIC LO1
I&D DATA
RXLOCK
FILTER
FILTER
FILTER
SWITCH
CRYSTAL
COSTAS
CRYSTAL BPSK BASEBAND
16 DB 16 DB
A2 A2 A2
PLL
FLASH
BRATE DET RF
VCO Fr+10.7 MHZ
16 DB
MAIN RSSI AD607
LOCK
MEMORY
DUAL
DC CTRL
PHASE LOCKED
1MEG X 16
PROCESSOR
DET RF
DC CTRL
IF AMP/DETECTOR
LOOP
I/O
68332 VCO TCXO
PHASE
DC CTRL
VCO
LOCKED
REF OSC
Ft
LO2 114.9 MHZ
SP
LOOP
FREQ DEV = +/- 2400 HZ COMPARE
CONN
RAM
12.8/10.0 MHZ GMSK MODULATION 0 DBM
512K X 16
RX ENABLE PIC CONTROL
DATA RATE = 9600 BAUD
/2
44 PIN
SYNTH LOCK SYNTH LOCK
BT = .5
IMEG (OPTIONAL)
I I I
COMPLEX
(3) DISCRETE
Q
Q
D/A
PHASE
Q
OUTPUTS DUAL
MODULATOR
TXKEY
MODULATOR OUT
(2)
RELAY A1
OUTPUTS
+13 DBM
ERA-5SM
RX INPUT
(4)
OPTO
INPUTS DATA +12BATT 5.7VRX
CO-AX
SYNC
CO-AX
ANALOG INPUTS (6)
TX DATA
TX KEY
V_R
TXLIMIT EMI
DET RF
I/O7
A/D V_F
TEMP
EMI
10 BIT
VF
POWER
11 CH VR VCC3
CONTROL & SWITCH
EMI
+12VBATT
TX CLK
VCC2
EMI
I DATA VCC1
BRATE 9600 BAUD
5.7V
VR
VF
5.7VPR
SWITCH DSP
LPF
.020W
REGULATOR
2W
100W
DIR
20W
T/R
.1W
G=7DB G=13DB G=10DB G=10DB
FC = 60 MHZ
COUPLER
SWITCH
PROCESSOR
VHB121-12T 54505305-01
19.6608 MHZ
Q DATA
VLB1-12
FINAL POWER AMP 54505306-01
FRONT END PA & POWER CONTROL
VLB100-12 MRF 455
CLK
COUNTER
F1/16
F1
CO-AX
+12 VOLT POWER
12 V BATT
PROCESSOR RUN (ON) LED (FLASH)
LED
TX POWER OK = AMBER LED VSWR = RED LED
LED
ANTENNA BNC