PED® CALL SOFTWARE
AND
EXTERNAL MODULATORFor Reliable Mine Wide Communication
 Emergency Evacuation Warning Personal Paging
WWW.MINESITE.COM.AU

PED® SYSTEM ELEMENTS
PEDCALL COMPUTER – THE OPERATOR INTERFACE AND EXTERNAL MODULATOR
The computer, a Windows PC running PEDCall,

CUSTOM SOLUTIONS

controls the PED transmission system. The PEDCall

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software provides the interface from the operator toaugue pecus. Venio regula ea

the PED system in a simple and efficient manner.

fatua incassum. Nisl quia etThe operator inputs information, such as thealiquip, scisco roto minim ali quip

destination and the message content, thenmacto duis. Wisi regula eum

PEDCall will encode this information. Encoding ofconsectetuer ut mos tamen enim,

the destination and message utilizes advanced

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encryption methods to eliminate any chance ofinvalid

information

beingtransmitted.

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These

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encryption methods also ensure the receivers can
decode the information in adverse signal conditions.

CONTACT KEY PEOPLE WHER EVERE THEY AREPED ® S YSTE M B EN EF IT S
•MINE WIDE PAGING•EMERGENCY EVACUATIONflexible solutions forunderground mines•OVERALL COMMUNICATIONS•NO COMMUNICATIONThe PED External Modulator is connected to the•SIGNALS PASS THROUGH THE
EARTH OR ROCK STRATA•NOT SUSCEPTIBLE TO DAMAGE
DUE TO UNDERGROUNDFLOODING, EXPLOSION, FIRE OR
CAVE-INS.

wherever they are underground. This simple, one-way text
message can save time and money, for example:
reason for a power failure or that the conveyor system is goingPED® MODULATORUNDERGROUNDPED® can send a private text message to any individual,• Groups of miners can receive information, such as theWARNINGINFRASTRUCTURE IN THE

CON TACT EVER YON E IN AN EMERGENC Y

to be stopped outbye, etc.

PEDCall Computer via the serial port. This provides
theinterfacetotheTransmitter.

The

9600 baud, 8 data bits, 1 stop bit and no parity.
The External Modulator, as its name suggests,modulates the encoded information and produces afrequency shifted output signal. The output signal is a
0-20mA Current Loop.
The output is connected to the Transmitter by apair.

Otheralternatives

toainvestigation (e.g. belt slip re-set).
• A transport driver can be advised of an urgently needed part.

External

Modulator communicates with the PC using RS232 attwisted• A beltman can be quickly advised of a problem that requires

hardwiredconnection can also be utilized, where necessary,such as fibre or radio links.
The External Modulator, as its name suggests,
modulates the encoded information and produces afrequency shifted output signal. The output signal is a
0-20mA Current Loop.

®

HOW PED OPERATESW E B S O L UT I O N S
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duis. Wisi regula eum consectetuer
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PED® uses ultra low frequency (ULF) signals to send signals directly
through rock, so called “through-the-earth” transmissions. The maindifference between PED® and other so called through-the-earthsystems is that PED® is proven and is operating in many mines, 24hours a day, 7 days a week. PED® has been installed in over 150
mines since 1990. The system has been refined and enhanced overthis time, but the basic working principles remain the same. The ULF
transmission system transmits to a number of receiver types to allow
a range of applications.

E B U SI N ES S S O L U T I O NS
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Modulator to PC connection

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The output is connected to the Transmitter by apaulatim. Haero ut nutus accum

twistedhardwired

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pair.

Other

alternatives

such as fibre or radio links.

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