Texas Instruments Tiris 2000 Series User manual

July ’00 Preface

Series 2000 Reader System

4-Channel TX/RX Multiplexer Module

for Remote Antenna RFM RI-MOD-TX8A

Reference Guide

11-06-21-039 July 2000

S2000 RA-RFM MUX Module - Reference Guide July ’00

Edition Three - July 2000

This is the third edition of this manual, it describes the following Series 2000 Module:

Series 2000 4-Channel TX/RX Multiplexer for RA-RFM RI-MOD-TX8A

Texas Instruments (TI) reserves the right to make changes to its products or services

or to discontinue any product or service at any time without notice. TI provides cus-

tomer assistance in various technical areas, but does not have full access to data

concerning the use and applications of customer's products.

Therefore, TI assumes no liability and is not responsible for customer applications or

product or software design or performance relating to systems or applications incor-

porating TI products. In addition, TI assumes no liability and is not responsible for

infringement of patents and/or any other intellectual or industrial property rights of

third parties, which may result from assistance provided by TI.

TI products are not designed, intended, authorized or warranted to be suitable for life

support applications or any other life critical applications which could involve poten-

tial risk of death, personal injury or severe property or environmental damage.

The TIRIS logo and the word TIRIS are registered trademarks of Texas Instruments

Incorporated.

This document may be downloaded onto a computer, stored and duplicated as nec-

essary to support the use of the related TI products. Any other type of duplication,

circulation or storage on data carriers in any manner not authorized by TI represents

a violation of the applicable copyright laws and shall be prosecuted.

PREFACE

Read This First

About This Guide This manual describes the TIRIS 4-Channel Transmit/Receive Multiplexer (TX/RX

MUX) Module RI-MOD-TX8A. It describes the module itself, how to install it and how

to use it.

Conventions

If You Need Assistance

Application Centers are located in Europe, North and South America, the Far East

and Australia to provide direct support. For more information, please contact your

nearest TIRIS Sales and Application Center. The contact addresses can be found on

our home page:

http://www.tiris.com

WARNING:

A WARNING IS USED WHERE CARE MUST BE TAKEN, OR A

CERTAIN PROCEDURE MUST BE FOLLOWED IN ORDER TO PRE-

VENT INJURY OR HARM TO YOUR HEALTH.

CAUTION:

This indicates information on conditions which must be

met, or a procedure which must be followed, which if not

heeded could cause permanent damage to the equipment

or software.

Note:

Indicates conditions which must be met, or procedures which must be

followed, to ensure proper functioning of the equipment or software.

Information:

Indicates information which makes usage of the equipment or soft-

ware easier

S2000 RA-RFM MUX Module - Reference Guide July ’00

Document Overview Page

Chapter 1: Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Introduction......................................................................................... 6

1.2 Product Description............................................................................ 6

Chapter 2: Connectors and Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 Connectors....................................................................................... 10

2.2 Jumpers............................................................................................ 12

Chapter 3: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1 Recommended Operating Conditions.............................................. 14

3.2 Electrical Characteristics.................................................................. 14

3.3 Timing Characteristics...................................................................... 14

3.4 Mechanical data............................................................................... 15

Chapter 4: Installation and Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.1 Connecting Multiplexer to Remote Antenna RFM............................ 17

4.2 Power Supply ................................................................................... 18

4.3 Antenna Requirements..................................................................... 18

4.4 Connecting Cable............................................................................. 19

4.5 Antenna Resonance Tuning............................................................. 19

List of Figures Page

Figure 1: Top View......................................................................................... 7

Figure 2: Block Diagram................................................................................. 8

Figure 3: Configuration for Input Signals CSA and CSB................................ 8

Figure 4: Jumper Locations.......................................................................... 12

Figure 5: Module Layout and Dimensions.................................................... 15

Figure 6: Connection of Multiplexer to RA-RFM .......................................... 17

List of Tables Page

Table 1: 1 Pin Functions .............................................................................. 10

Table 2: J4 Pin Functions............................................................................. 10

Table 3: J3 Pin Functions............................................................................. 10

Table 4: J6 Pin Functions............................................................................. 11

Table 5: TX/RX Channel Selection .............................................................. 11

Table 6: Size and Weight............................................................................. 15

Table 7: Antenna Characteristics................................................................. 19

CHAPTER 1

Product Description

Chapter 1: Product Description

This chapter will introduce you to the Multiplexer Module and the products with which

it works. It also provides an overview of the function of the RA-RFM multiplexer.

Topic Page

1.1 Introduction................................................................................................6

1.1.1 General ..................................................................................................6

1.2 Product Description...................................................................................6

1.1.2 Reference...............................................................................................6

1.2.1 Description.............................................................................................6

S2000 RA-RFM MUX Module - Reference Guide July ’00

1.1 Introduction

1.1.1 General

This document provides information about the TIRIS 4-Channel Transmit/Receive

Multiplexer (TX/RX MUX) Module RI-MOD-TX8A. It describes the module and how

to install it.

The multiplexer module allows the use of up to 4 transmit/receive (TX/RX) antennas

with one Remote Antenna Radio Frequency Module (RA-RFM) System.

1.1.2 Reference

This document should be used in conjunction with the High Performance Remote An-

tenna RFM (RI-RFM-008B) Reference Manual (Manual Number: 11-06-21-047).

1.2 Product Description

1.2.1 Description

The multiplexer is connected between an RA-RFM and the Tuning Board (TB). The

active antenna (TX/RX channel) is selected by two digital input signals. All antennas

can be disabled by removing one jumper.

The supply voltages and channel selection signals are connected via a 4-pin connec-

tor.

Connection to the RA-RFM and to the antennas is made via two screw block termi-

nals.

The channel select input signals, connected to a data processing unit (for example:

TIRIS Series 2000 Control Module, or a customer designed Control Unit), are Low

Power Schottky TTL and HCMOS Logic compatible.

The Multiplexer includes circuitry to reduce crosstalk of transmit function.

There are four connectors on the multiplexer, they are:

J1 which is used to connect the supply voltage and channel select signals

J3 which is used to connect up to 4 antennas

J4 the antenna resonator connector, which is used to connect the multi-

plexer board to the Antenna terminals of the RA-RFM

J6 which can be used to connect the multiplexer ground to earth

The multiplexer can be mounted by means of four M3 mounting bolts on the under-

side of the module.

A layout of the multiplexer viewed from the top is shown in Figure 1. A block sche-

matic of the multiplexer is shown in Figure 2. The multiplexer is described in the fol-

lowing section.

July ’00 Chapter 1. Product Description

The multiplexer switches the selected Antenna to the RA-RFM. The multiplexer

switches both the transmit and receive functions of the Antenna. Low resistance high

voltage switches (MOSFETs) are used to switch the antenna connection because of

the high voltage used during transmitting.

Figure 1: Top View

C6-3 C6-2 C6-1

R4-4

R4-3

C7-4 C7-3 C7-2 C7-1

ZD4 ZD3 ZD2 ZD1

IC4

R4-2

R4-1

R8-4

R7-4

R6-4

R8-3

R7-3

R6-3

R8-2

R6-2

R7-2

R8-1

RN1

Q25-4

Q25-3

Q25-2

Q25-1

Q24

Q21

Q18

Q15

Q12

Q23

Q20

Q17

Q14

Q11

Q22

Q19

Q16

Q13

Q10

R3-4

R3-3

R3-2

R3-1

IC5-4IC5-3

IC5-2IC5-1

R7-1

IC2

IC1

R6-1

C10

1J2

1J5

C12

C11

IC3

C6-4 L4 L2

1J7

Q29

V_IN

GND

CSA

CSB

onnec

ower

for channel select signals

Connection to

RA RF Module

antenna terminals

TX/RX

TB1

TX/RX

TB2

TX/RX

TB3

TX/RX

TB4

S2000 RA-RFM MUX Module - Reference Guide July ’00

Figure 2: Block Diagram

All multiplexed antennas have one common terminal, which is the antenna terminal

ANT. The other antenna terminals are connected to ground GNDTX via a switch.

The active TX/RX channel is selected by the two binary weighted channel select sig-

nals CSA and CSB, table 5 shows the binary configuration needed to select each

channel. The configuration of the input signals CSA and CSB is shown in Figure 3.

Figure 3: Configuration for Input Signals CSA and CSB

WARNING:

CARE MUST BE TAKEN WHEN HANDLING THE RA-RFM. HIGH

VOLTAGE ACROSS THE ANTENNA TERMINALS AND ALL

ANTENNA RESONATOR PARTS COULD BE HARMFUL TO YOUR

HEALTH. IFTHE ANTENNA INSULATION IS DAMAGED IT

SHOULD NOT BE CONNECTED TO THE RA-RFM.

Channel

Selection

GNDTX

Connection to

RF Module

antenna

terminals

ENTX-

ANT

GNDTX

CSA

CSB

TX/RX

TB1 TX/RX

TB2 TX/RX

TB3 TX/RX

TB4

CHAPTER 2

Connectors and Jumpers

Chapter 2: Connectors and Jumpers

This chapter describes the connectors and jumpers on the multiplexer.

Topic Page

2.1 Connectors...............................................................................................10

2.2 Jumpers....................................................................................................12

2.2.1 Jumper J2 ..................................................................................12

2.2.2 Jumper J5 ..................................................................................12

2.2.3 Jumper J7 ..................................................................................12

S2000 RA-RFM MUX Module - Reference Guide July ’00

2.1 Connectors

Table 1 lists the pin functions for connector J1. The connector type is a 4-pin plug-in

screw connector with 5.08 mm pin spacing.

Table 2 lists the pin functions for the antenna screw block terminal J4. The multiplex-

er is connected to the RA-RFM antenna terminals via connector J4.

Table 3 lists the pin functions for the antenna screw block terminal J3. The TX/RX

antennas must be connected to the RA-RFM antenna terminals via the tuning boards

to connector J3.

Table 4 lists the pin function for ground post J6.

Table 5 shows the logic switching of the active channel.

All connectors are accessible from the top.

Table 1: 1 Pin Functions

Pin# Signal Direction Description

1 V_IN IN Supply voltage input

2 GND IN Ground

3 CSA IN Channel Select signal CSA (LSB)

4 CSB IN Channel Select signal CSB (MSB)

Table 2: J4 Pin Functions

Pin# Signal Direction Description

1 ANT IN/OUT Antenna resonator signal. This pin must be

connected to signal ANT_1 on the RA-RFM.

2 GNDTX IN/OUT Antenna ground. This pin must be connected to

ANT_2 on the RA-RFM.

Table 3: J3 Pin Functions

Pin# Signal Direction Description

1 A_OUT4 IN/OUT Switched antenna signal (switched to ground

GNDTX, when active). Connected to Tuning Board.

2 ANT IN/OUT Antenna resonator signal. Connected to Tuning

Board.

3 A_OUT3 IN/OUT Switched antenna signal (switched to ground

GNDTX, when active). Connected to Tuning Board.

4 ANT IN/OUT Antenna resonator signal. Connected to Tuning

Board.

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