Codan Radio MT-4E Paging - Manual (Page 20)

USER GUIDE | MT-4E PAGING SYSTEMS
Chapter 2: MT-4E Paging Applications Page 12
SIMULCAST PAGING
Simulcast Paging enables a message to be sent to all pagers in an overlapping coverage region
simultaneously. There are two basic methods of controlling the remote paging transmitters, with RF
links sending PURC® tones to transmitter controllers, or with a network sending TNPP data to wireless
data encoders.
Simulcast Paging with RF Links
Simulcast paging with RF links operates the same as remote paging except that high stability
frequencies are required to frequency synchronize the multiple paging transmitters and a transmitter
controller is used to equalize the audio phase delay and audio amplitude (modulation level) of the
paging transmitters. Simulcast paging with RF links is capable of supporting analog or digital encoded
paging information. Simulcast paging with RF links is shown in Figure 2-4
Figure 2-4: Simulcast Paging with RF Links.
PTT
Balanced Audio
Balanced Audio
LINK
TRANSMITTER RF OUT
RF LINK TO
PAGING REMOTE
(PURC® TONES)
PAGING BASE STATION
ZETRON
Model 15/32/64
PAGING
NETWORK
CARD
PAGING ENCODER
OR TERMINAL
ZETRON
Model 33
RF LINK FROM
PAGING BASE
(PURC® TONES)
Balanced Audio
Balanced Audio
LINK
RECEIVER RF IN
PAGING REMOTE STATION
Direct Mod
RF REF
A/D Mode Control
PTT
Balanced Audio
Balanced Audio
Balanced Audio
Digital Data
Balanced Audio
A / D Select
PTT
TRANSMITTER RF OUT
PAGING
MODULATOR
PAGER
10 MHz
HIGH STABILITY
REFERENCE
(GPS)
Balanced Audio
Balanced Audio
LINK
RECEIVER RF IN
PAGING REMOTE STATION
Direct Mod
RF REF
A/D Mode Control
PTT
Balanced Audio
Balanced Audio
Balanced Audio
Digital Data
Balanced Audio
A / D Select
PTT
ZETRON
Model 66
with Simulcast
Delay Option
TRANSMITTER RF OUT
PAGING
MODULATOR
TRANSMITTER
CONTROLLER
PAGER
10 MHz
HIGH STABILITY
REFERENCE
(GPS)
PAGER
RF LINK FROM
PAGING BASE
(PURC® TONES)
ZETRON
Model 66
with Simulcast
Delay Option
TRANSMITTER
CONTROLLER
RECEIVER
NORM
SQ. DISABLE
OFF
CNTL
BUS
A D
RF N I
REF
IN
USB
FREQUENCY (MHz)
MADE IN CANADA MODEL # CODE
RECEIVER
NORM
SQ. DISABLE
OFF
CNTL
BUS
A D
RF N I
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
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
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