User's Manual

ManualsBrandsCANBERRA ManualsElectronicsGPS-COM SUPERVISOR/REPEATER

This document describes how works the 915MHz RF part of the Repeater/Supervisor system in order to

show conformity to part 15-247 of the FCC rules.

The following items are detailed:

- System description

- Timing

Le Val d'Ombrée - 49520 COMBREE

tél: 02.41.94.63.63

fax: 02.41.94.26.10

www.eolane.com

ESIGNATION DU PROJET

CANBERRA04

Référence du document :

CAN04_08301_A (Repeater supervisor

915MHz RF System

description).doc

Evolutions

Indice Date Nature des évolutions Opérateur

A 23/07/2008 Création C. QUENTEL

B 30/07/2008 Clarify §3.2 C. QUENTEL

Summary of content (6 pages)

PAGE 1
This document describes how works the 915MHz RF part of the Repeater/Supervisor system in order to show conformity to part 15-247 of the FCC rules. The following items are detailed: - System description - Timing Le Val d'Ombrée - 49520 COMBREE tél: 02.41.94.63.63 fax: 02.41.94.26.10 www.eolane.com DESIGNATION DU PROJET : Référence du document : Indice A B Date 23/07/2008 30/07/2008 CANBERRA04 CAN04_08301_A (Repeater supervisor 915MHz RF System description).
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CONTENTS 1. OUTPUT POWER AND CHANNEL SEPARATION OF A RADIOFREQUENCY DEVICE..................3 2. FREQUENCY RANGE OF A RADIOFREQUENCY DEVICE ...................................................................3 3. SYSTEM DESCRIPTION.................................................................................................................................3 4. RECEIVER INPUT BANDWITH....................................................................................................................
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1. OUTPUT POWER AND CHANNEL SEPARATION OF A RADIOFREQUENCY DEVICE The operating mode doesn’t influence the ouput power and the chanel spacing. There is only one transmitter which is driven by identical input parameters concerning these two parameters.
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frequency link and to send data received from the slave to the PC through the wired serial link. When the Repeater/Supervisor device is powered on it is set on the idle state (no RX, no TX). When the Repeater/Supervisor device receives a start command (from its wired serial link) sent by user, it starts sends a packet of synchronisation data on all channels according to the hopping frequencies table in order to synchronize the slaves.
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3.2. SUPERVISOR MODE CONNECTED TO A PC THROUGH A RADIO FREQUENCY LINK This mode is identical to the previous mode, with the difference that a second RF module is used to transmit data to the PC on a radio frequency link instead of the wired serial link. The second RF module is synchronised with the first RF module that is used to communicate with slaves GPS-COM or CSP-COM.
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5. SYSTEM RECEIVER HOPPING CAPABILITY There is only one hopping sequence. The Repeater/Supervisor and the slave follow this sequence. Both devices shift between Rx and Tx time slot according to the clock of the Repeater/Supervisor. There isn’t repeating of a packet. Data are sent independently of the frequency. 6. DWELL TIME Repeater/Supervisor dwell time = 17,3ms max each 165ms. 7. EQUAL HOPPING FREQUENCY USE During each time slot, Repeater/Supervisor is sending only frames.