MDS TransNET 900 Guía para resolver problemas descargar pdf

05-4481A01, Rev. A GE MDS TransNET Quick Start Guide 1

MDS TransNET

Publication No. 05-4481A01, Rev. A

The transceiver, shown in Figure 1, is a spread spectrum radio

designed for license-free operation. These units employ Digital

Signal Processing (DSP) technology to provide highly-reliable

long-distance communications, even in the presence of weak

signals or interference.

The transceiver is housed in a compact and rugged die-cast

enclosure that need only be protected from direct exposure to the

weather. It contains a single printed circuit board with all necessary

components for radio operation. No jumper settings or manual

adjustments are required to configure the radio for operation.

In addition to these instructions, the MDS TransNET Reference

Manual (05-2708A01) provides helpful guidance on TransNET

systems. Electronic copies of all user documents and data sheets

are available free of charge at

www.GEmds.com.

1.1 Transceiver Features

Listed below are several key features of the transceiver. These are

designed to ease the installation and configuration of the radio,

while retaining the ability to make changes in the future.

• 902–928 MHz operation using the TransNET 900

• 2400–2482 MHz ISM band operation with the TransNET

2400

• User-selectable option to skip sub-bands with constant

interference

• 65,000 available network addresses

• Network-wide configuration from the Master station elimi-

nates most trips to Remote sites

• Data transparency ensures compatibility with virtually all

asynchronous SCADA system RTUs

• Peak-hold RSSI averaged over eight hop cycles

• Operation at up to 115,200 bps continuous data flow

• Store-and-Forward repeater operation

• Data latency typically less than 10 ms

• Same hardware for Master or Remote configuration

• Supports RS/EIA-232 and RS/EIA-485 user interface

• Low current consumption; typically less than 3 mA in “sleep”

mode

Figure 1. MDS TransNET Series Transceiver

NOTE: Some radio features may not be available on all models,

or limited by the options purchased, or the applicable

regulatory constraints for the region in which the radio will

operate.

1.2 Typical Applications

1.2.1 Multiple Address Systems (MAS)

This is the most common application of the transceiver. It consists

of a central control station (Master) and two or more associated

Remote units, as shown in Figure 2. An MAS network provides

communications between a central host computer and remote

terminal units (RTUs) or other data collection devices. The

operation of the radio system is transparent to the computer

equipment. When used in this application, the transceiver provides

an excellent alternative to traditional (licensed) MAS radio

systems.

Figure 2. Typical MAS Network

1.2.2 Point-to-Point System

A point-to-point configuration (Figure 3) is a simple arrangement

consisting of just two radios—a Master and a Remote. This

provides a half-duplex communications link for the transfer of data

between two locations.

Invisible place holder

Figure 3. Typical Point-to-Point Link

1.2.3 Adding a Tail-End Link to an Existing

Network

A tail-end link can be used to extend the range of a traditional

(licensed) MAS system. This might be required if an outlying site is

blocked from the MAS Master station by a natural or man-made

obstruction. In this arrangement, a TransNET radio links the

outlying Remote site into the rest of a licensed MAS system by

sending data from that site to an associated TransNET installed at

one of the licensed Remote sites (see Figure 4 on Page 2).

As the data from the outlying site is received at the licensed

Remote site, it is transferred to the licensed radio (via a local cable

connection) and is then transmitted to the MAS Master station in

1.0 INTRODUCTION

MDS TransNET

Remote

MDS TransNET

Remote

MDS TransNET

Master

MDS TransNET

Remote

MDS TransNET

Remote

RTU

Host System

RXD

TXD

SYNC

PWR

RXD

TXD

SYNC

PWR

RXD

TXD

SYNC

PWR

RXD

TXD

SYNC

PWR

RXD

TXD

SYNC

PWR

MDS TransNET

Master

MDS TransNET

Remote

Host System

1 2 3 4 5 6

Indice de contenidos

Pagina 1 - MDS TransNET

05-4481A01, Rev. A GE MDS TransNET Quick Start Guide 1MDS TransNETPublication No. 05-4481A01, Rev. AThe transceiver, shown in Figure 1, is a spread sp

Pagina 2 - 2.0 HARDWARE INSTALLATION

2 GE MDS TransNET Quick Start Guide 05-4481A01, Rev. Athe usual manner.Figure 4. Typical Tail-End Link Arrangement1.2.4 Extending a TransNET Network w

Pagina 3 - 3.0 RADIO PROGRAMMING

05-4481A01, Rev. A GE MDS TransNET Quick Start Guide 3• Radio interference checksFor more information on how to perform these optimization steps, refe

Pagina 4 - —Display Only (Continued)

4 GE MDS TransNET Quick Start Guide 05-4481A01, Rev. AXRSSI [NONE, -40...-120]Minimum RSSI level required to preserve synchronization with a non-prima

Pagina 5 - 4.0 TROUBLESHOOTING

05-4481A01, Rev. A GE MDS TransNET Quick Start Guide 5Successful troubleshooting of an MDS transceiver system is not difficult, but requires a logical

Pagina 6 - 4.4 Technical Assistance

GE MDS, LLC175 Science ParkwayRochester, NY 14620MDS TransNET Quick Start Guide General Business: +1 585 242-960005-4481A01, Rev. A FAX: +1 585 242-96