Codan Radio MT-4E Paging - Manual (Page 21)

MT-4E PAGING SYSTEMS | USER GUIDE
Chapter 2: MT-4E Paging Applications Page 13
Simulcast Paging with TNPP Data Links
Simulcast paging with TNPP data links uses a wireless data manager that sends TNPP data over a
network to the multiple paging transmitters through wireless data encoders. The TNPP data includes
a time stamp that is referenced to GPS time, indicating when the data will be sent. Each wireless data
encoder is connected to the GPS time clock for time synchronization accuracy. Simulcast paging with
TNPP data links is capable of supporting digitally encoded paging information only. Simulcast paging
with TNPP data links is shown in Figure 2-5.
Figure 2-5: Simulcast Paging with TNPP Data Links
TNPP DATA LINK
(SATELLITE, TELEPHONE
DATA CIRCUITS, PACKET
NETWORKS, WAN OR
RF MODEMS)
PAGING BASE STATION
PAGING REMOTE STATION
Direct Mod
RF REF
A/D Mode Control
PTT
Digital Data
PTT
TRANSMITTER
RF OUT
PAGING
MODULATOR
PAGER
PAGING REMOTE STATION
Direct Mod
RF REF
A/D Mode Control
PTT
Digital Data
PTT
TRANSMITTER
RF OUT
PAGING
MODULATOR
PAGER
10 MHz
HIGH STABILITY
REFERENCE
(GPS)
PAGER
ZETRON
Model 600
WIRELESS DATA
MANAGER
ZETRON
Model 620
WIRELESS DATA
ENCODER
ZETRON
Model 620
WIRELESS DATA
ENCODER
1 PPS TIME
SYNCHRONIZATION
DATA
(GPS)
1 PPS TIME
SYNCHRONIZATION
DATA
(GPS)
10 MHz
HIGH STABILITY
REFERENCE
(GPS)
1 PPS TIME
SYNCHRONIZATION
DATA
(GPS)
TNPP DATA LINK
(SATELLITE, TELEPHONE
DATA CIRCUITS, PACKET
NETWORKS, WAN OR
RF MODEMS)
TNPP DATA LINK
(SATELLITE, TELEPHONE
DATA CIRCUITS, PACKET
NETWORKS, WAN OR
RF MODEMS)
TRANSMITTER
CNTL
BUS
MIC RF OUT
A D
ANALOG
DIGITAL
NORM
OFF
KEY TX
MIC MODE
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA MODEL # CODE
TRANSMITTER
CNTL
BUS
MIC RF OUT
A D
ANALOG
DIGITAL
NORM
OFF
KEY TX
MIC MODE
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA MODEL # CODE
SET
DEV
4 LEVEL
SETUP
MODE
DATA
MODE
A D
2 LEVEL
SET MOD
NORM
REF IN
REF OUT
PAGING
MODULATOR
DATA
INT
FREQ REF
EXT DATA / CTRL PORT
PULL DOWN
TO REMOVE
SET
DEV
4 LEVEL
SETUP
MODE
DATA
MODE
A D
2 LEVEL SET MOD
NORM
REF IN
REF OUT
PAGING
MODULATOR
DATA
INT
FREQ REF
EXT DATA / CTRL PORT
PULL DOWN
TO REMOVE