Codan-radio MT-4E Paging Bedienungsanleitung PDF herunterladen (Seite 20)

USER GUIDE | MT-4E PAGING SYSTEMS

Chapter 2: MT-4E Paging ApplicationsPage 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

LINK

TRANSMITTER

RF OUT

RF LINK TO

PAGING REMOTE

(PURC® TONES)

PAGING BASE STATION

ZETRON

Model 15/32/64

PAG ING

NETWORK

CARD

PAGING ENCODER

OR TERMINAL

ZETRON

Model 33

RF LINK FROM

PAGING BASE

(PURC® TONES)

Balanced Audio

LINK

RECEIVER

RF IN

PAGING REMOTE STATION

Direct Mod

RF REF

A/D Mode Control

PTT

Balanced Audio

Digital Data

Balanced Audio

A / D Select

PTT

TRANSMITTER

RF OUT

PAG ING

MODULATOR

PAG ER

10 MHz

HIGH STABILITY

REFERENCE

(GPS)

Balanced Audio

LINK

RECEIVER

RF IN

PAGING REMOTE STATION

Direct Mod

RF REF

A/D Mode Control

PTT

Balanced Audio

Digital Data

Balanced Audio

A / D Select

PTT

ZETRON

Model 66

with Simulcast

Delay Option

TRANSMITTER

RF OUT

PAG ING

MODULATOR

TRANSMITTER

CONTROLLER

PAG ER

10 MHz

HIGH STABILITY

REFERENCE

(GPS)

PAG ER

RF LINK FROM

PAGING BASE

(PURC® TONES)

ZETRON

Model 66

with Simulcast

Delay Option

TRANSMITTER

CONTROLLER

RECEIVER

NORM

SQ. DISABLE

OFF

CNTL

BUS

RF NI

REF

USB

FREQUENCY (MHz)

MADE IN CANADA

MODEL # CODE

RECEIVER

NORM

SQ. DISABLE

OFF

CNTL

BUS

RF NI

REF

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

ANALOG

DIGITAL

NORM

OFF

KEY TX

MICMODE

REF

USB

FREQUENCY (MHz)

MADE IN CANADA

MODEL # CODE

TRANSMITTER

CNTL

BUS

MIC RF OUT

ANALOG

DIGITAL

NORM

OFF

KEY TX

MICMODE

REF

USB

FREQUENCY (MHz)

MADE IN CANADA

MODEL # CODE

TRANSMITTER

CNTL

BUS

MIC RF OUT

ANALOG

DIGITAL

NORM

OFF

KEY TX

MICMODE

REF

USB

FREQUENCY (MHz)

MADE IN CANADA

MODEL # CODE

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