Summary of Contents for Texas Instruments RI-MOD-TX2A
- Page 1 Texas Instruments Registration Identification System Multiplexer Module RI-MOD-TX2A (discontinued) RI-MOD-TX4A (discontinued) Reference Manual 11-06-21-034 18 November 1996...
- Page 2 (figure 6) showing how to connect the Multiplexer Module to the S25x0 has been included. Texas Instruments reserves the right to change its products or services at any time without notice. TI provides customer assistance in various technical areas, but does not have full access to data concerning the uses and applications of customer's products.
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Page 3: Table Of Contents
18 November 1996 Multiplexer Module (TX2A/TX4A) Contents 1. Introduction ....................... 5 1.1 General ......................... 5 1.2 Product Description ..................... 5 1.3 Product Option Coding ..................5 1.4 Conventions ......................5 2. Product Function ....................... 6 2.1 Description ......................6 2.2 Multiplexer Connectors and Jumpers ..............11 2.2.1 Connectors .................... - Page 4 Multiplexer Module (TX2A/TX4A) 18 November 1996 MUX-4...
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Page 5: Introduction
1.1 General This document provides information about the TIRIS Transmit/Receive Multiplexer (MUX) Modules RI-MOD-TX2A and -TX4A. It describes the modules and how to install them. 1.2 Product Description The 2 Channel Multiplexer Module allows the use of 2 transmit/receive (TX/RX) antennas with one RF Module and the 4 Channel Multiplexer Module allows the use of up to 4 transmit/receive (TX/RX) antennas with one RF Module. -
Page 6: Product Function
A layout of the Multiplexer viewed from the top is shown in figure 1 (the parts in dotted lines are not mounted for the Module RI-MOD-TX2A). A block schematic of the Multiplexer is shown in figure 2. The Multiplexer is described in the following section. -
Page 7: Figure 1: Top View
18 November 1996 Multiplexer Module (TX2A/TX4A) Connector for Power Supply and for channel select signals Connection to RF Module antenna terminals TX/RX TX/RX TX/RX TX/RX antenna 4 antenna 3 antenna 2 antenna 1 Figure 1: Top View The Multiplexer switches the selected antenna to the RF Module. The Multiplexer switches both the transmit and receive functions of the antenna. -
Page 8: Figure 3: Configuration Of Tiris Standard Tx/Rx Antennas
Multiplexer Module (TX2A/TX4A) 18 November 1996 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 characteristics of the TX/RX antennas are shown in figure 3. Figure 3: Configuration of TIRIS Standard TX/RX Antennas For more details refer to Section 4 “Installation and Use of the 4 Channel Multiplexer”. -
Page 9: Figure 5: Connection Of Multiplexer To Rf Module
18 November 1996 Multiplexer Module (TX2A/TX4A) Figure 5: Connection of Multiplexer to RF Module Note: The lines ANT and GNDTX, which connect the Multiplexer board to the RF Module must be connected as shown. They must not be swapped, otherwise the Multiplexer will not work. -
Page 10: Figure 6: Connection Of Multiplexer To S25X0 Reader
Multiplexer Module (TX2A/TX4A) 18 November 1996 Notes: If you are not using the TIRIS Add-on Module ‘Dynamic Auto Tuning’ remember that the antennas are not individually tuned to resonance when used together with the Multiplexer. So either tune the RF Module to the best resonance condition for all the antennas being used, or include a ‘Dynamic Auto Tuning’... -
Page 11: Multiplexer Connectors And Jumpers
18 November 1996 Multiplexer Module (TX2A/TX4A) 2.2 Multiplexer Connectors and Jumpers 2.2.1 Connectors Table 1 lists the pin functions for connector J1. The connector type is a 4-pin Phoenix connector with 5.08 mm pin spacing. Tables 2 lists the pin functions for the antenna screw block terminal J4. The Multiplexer is connected to the RFM antenna terminals via connector J4. -
Page 12: Table 3: J3 Pin Functions
Multiplexer Module (TX2A/TX4A) 18 November 1996 Table 3: J3 Pin Functions Pin# Signal Direction Description A_OUT4 IN/OUT Switched antenna signal (switched to ground GNDTX, when active). Connected to TX/RX antennas. IN/OUT Antenna resonator signal. Connected to TX/RX antennas. A_OUT3 IN/OUT Switched antenna signal (switched to ground GNDTX, when active). -
Page 13: Jumpers
18 November 1996 Multiplexer Module (TX2A/TX4A) 2.2.2 Jumpers There are 3 jumpers on the Multiplexer, for location of the jumpers please refer to figure 7. The jumpers are described in detail following: Figure 7: Jumper Locations This jumper is used to enable all TX/RX channels. When this jumper is open, all TX/RX channels are disabled. -
Page 14: Specifications
Multiplexer Module (TX2A/TX4A) 18 November 1996 3. Specifications 3.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) Supply voltage V_IN Antenna resonance voltage V_ANT Vpeak -25 to +70 o C Operating free-air temperature range T_oper -40 to +85 o C Storage temperature range T_store Notes: Free-air temperature: air temperature immediately surrounding the Multiplexer module. -
Page 15: Electrical Characteristics
18 November 1996 Multiplexer Module (TX2A/TX4A) 3.3 Electrical Characteristics Symbol Parameter min. typ. max. Unit R_Cha Additional antenna resonator resistance per channel V_U1 Internal stabilized logic supply voltage V_U2 Internal stabilized driver supply voltage 10.8 12.0 13.2 Low level input voltage of signals CSA, CSB and Enable signal High level input voltage of signals CSA, CSB and Enable signal (J2) -
Page 16: Mechanical Data
85.54 130.81 135.89 Figure 8: Module Layout and Dimensions Table 6: Size and Weight Parameter typical Unit 135.89 ± 1.0 Length 90.17 ± 1.0 Width 36.0 ± 2.0 Height(including mounting bolts) Weight of complete Multiplexer RI-MOD-TX4A Grams RI-MOD-TX2A Grams MUX-16... -
Page 17: Installation And Use Of The 4 Channel Multiplexer Module
18 November 1996 Multiplexer Module (TX2A/TX4A) 4. Installation and Use of the 4 Channel Multiplexer Module 4.1 Power Supply 4.1.1 Supply Requirements Note: The Multiplexer must not be supplied by Switched Mode Power Supplies (SMPS). This is because most SMPS operate at frequencies around 50 kHz. The harmonics of the generated field can interfere with the TIRIS receiver. -
Page 18: Connecting Cable
Multiplexer Module (TX2A/TX4A) 18 November 1996 Table 8: Antenna Characteristics Parameter Conditions min. typ. max. Unit µH L_ANT Antenna inductance range, within which 26.0 27.0 27.9 the antenna can be tuned to resonance using the tuning coil on the RF Module Q_ANT Recommended quality factor of antenna coil for proper operation...
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