User Manual

4
Mini-RFM - Reference Guide November ’00
Document Overview
Page
Chapter 1: Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 General............................................................................................... 6
1.2 System Overview ............................................................................... 6
1.3 Product Description ............................................................................ 6
1.4 Mechanical Construction .................................................................... 7
Chapter 2: Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 General............................................................................................... 9
2.2 Transmitter ......................................................................................... 9
2.3 Receiver ........................................................................................... 11
2.4 Antenna Circuit................................................................................. 11
Chapter 3: Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Connector Location .......................................................................... 14
3.2 Connector ST1 ................................................................................. 15
3.3 Connector ST2 ................................................................................. 16
Chapter 4: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Recommended Operating Conditions .............................................. 18
4.2 Electrical Characteristics.................................................................. 18
4.3 Timing Characteristics...................................................................... 20
4.4 Mechanical Data............................................................................... 21
Chapter 5: Installation and Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1 Mechanical Mounting ....................................................................... 23
5.2 Supply Voltage ................................................................................. 23
5.3 Receiver Signal Strength Output RXSS-.......................................... 25
5.4 Programming a Transponder ........................................................... 27
5.5 Antenna Requirements..................................................................... 27
5.6 Antenna Tuning................................................................................ 29
Chapter 6: Warnings, Cautions and Notices . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.1 FCC / Telecommunications Regulations.......................................... 32
6.2 Important Note to Purchasers/Users of the Mini-RFM in the USA ... 32
6.3 Warning ............................................................................................ 32
6.4 Cautions ........................................................................................... 32
List of Figures
Page
Figure 1: The RI-RFM-003B........................................................................... 6
Figure 2: Mini-RFM Block Diagram.............................................................. 10
Figure 3: Mini-RFM’s Antenna Circuit .......................................................... 12
Figure 4: Top View ....................................................................................... 14
Figure 5: Bottom View.................................................................................. 14
Figure 6: Maximum Supply Current I_VSP versus t_off (Power Stage)....... 19
Figure 7: Mechanical Dimensions - Top View.............................................. 21
Figure 8: Mechanical Dimensions - Side View............................................. 21
Figure 9: PCB Mounting Proposal................................................................ 23
Figure 10: Supply Line Wiring for Short Supply Lines.................................. 24
Figure 11: Supply Line Wiring for a Separated Power Supply ..................... 25
Figure 12: Synchronization output Control - Digital Adjustment................... 26
Figure 13: Synchronization output Control - Analog Adjustment ................. 26
Figure 14: Write Pulse Timing for TXCT- ..................................................... 27
Figure 15: Stick Antenna RI-ANT-P02A....................................................... 28
List of Tables
Page
Table 1: Module Connector - ST1................................................................ 15
Table 2: Antenna Tuning Connector - ST2 .................................................. 16