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Hardware Interfaces
A DIVISION OF TRIMBLE
20 Hardware Overview
Hardware Interfaces
Antenna Connections
The Micro supports two monostatic bidirectional RF antennas through two U.FL
connector or edge vias. See
Cables and Connectors for more information on antenna
connector parts and
Micro Hardware Integration for antenna edge via locations and layout
guidelines.
The maximum RF power that can be delivered to a 50 ohm load from each port is 1 Watt,
or +30 dBm (regulatory requirements permitting).
Note
The RF ports can only be energized one at a time.
Antenna Requirements
The performance of the Micro is affected by antenna quality. Antennas that provide good
50 ohm match at the operating frequency band perform best. Specified sensitivity
performance is achieved with antennas providing 17 dB return loss or better across the
operating band. Damage to the module will not occur for any return loss of 1 dB or
greater. Damage may occur if antennas are disconnected during operation or if the
module sees an open or short circuit at its antenna port.
Antenna Detection
CAUTION!
!
!
Unlike the M6e and M5e modules the Micro DOES NOT support automatic
antenna detection. When writing applications to control the Micro you
MUST explicitly specify the antennas to operate on. Using the Mercury-
API this requires creation of a SimpleReadPlan object with the list of
antennas set and that object set as the active /reader/read/plan. For
more information see the MercuryAPI Programmers Guide | Level 2 API
| Advanced Reading | ReadPlan section.
- Micro Har dwar e Guide 1
- Revision Table 3
- Industry Canada 7
- Industrie Canada 8
- A DIVISION OF TRIMBLE 10
- Contents 11
- 12 Contents 12
- 14 Contents 14
- 16 Contents 16
- Micro Introduction 17
- 18 Micro Introduction 18
- Hardware Overview 19
- Hardware Interfaces 20
- Digital/Power Interfaces 21
- Control Signal Specification 22
- Hardware Overview 23 23
- 24 Hardware Overview 24
- USB Interface 24
- Input Mode 24
- Output Mode 24
- Reset Line 25
- Shutdown Line 26
- Power Requirements 27
- Power Consumption 28
- Environmental Specifications 29
- 30 Hardware Overview 30
- Thermal Management 31
- Thermal Resistance 31
- WARNING! 32
- Authorized Antennas 33
- 34 Hardware Overview 34
- Assembly Information 35
- Micro Mechanical Drawing 36
- Micro Hardware Integration 37
- M6e-Micro Module Integration 38
- 38 Hardware Overview 43
- Firmware Overview 44
- Boot Loader 45
- Application Firmware 46
- Custom On-Reader Applications 47
- Communication Protocol 48
- Serial Communication Protocol 49
- Reader-to-Host Communication 50
- User Programming Interface 51
- Functionality of the Micro 52
- Regulatory Support 53
- Note: CN was 54
- Frequency Setting 55
- Frequency Hop Table 56
- 52 Functionality of the Micro 57
- Protocol Support 58
- ISO 18000-6B 59
- Delimiter 60
- Antenna Ports 61
- Port Power and Settling Time 63
- Tag Handling 64
- Tag Read Meta Data 66
- Power Management 67
- Performance Characteristics 68
- 64 Functionality of the Micro 69
- Appendix A: Error Messages 70
- Appendix A: Error Messages 67 72
- 68 Appendix A: Error Messages 73
- Solution 73
- Bootloader Faults 74
- Flash Faults 75
- Appendix A: Error Messages 71 76
- 72 Appendix A: Error Messages 77
- Protocol Faults 78
- FAULT_NO_TAGS_FOUND – (400h) 79
- FAULT_AFE_NOT_ON – 405h 80
- FAULT_DATA_TOO_LARGE – 40Bh 82
- Appendix A: Error Messages 79 84
- 80 Appendix A: Error Messages 85
- Appendix A: Error Messages 81 86
- FAULT_POOR_RETURN_LOSS – 505h 87
- Tag ID Buffer Faults 89
- System Errors 91
- Devkit Hardware 92
- Connecting the Antenna 93
- Devkit USB Interfaces 94
- Devkit Jumpers 95
- Devkit Schematics 96
- Demo Application 97
- Appendix C: Environmental 100
- Considerations 100
- Raising the ESD Threshold 103
- Environmental 104
- Tag Considerations 104
- Multiple Readers 105
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