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Power Management
A DIVISION OF TRIMBLE
60 Functionality of the Mercury6e
Power Management
The M6e is designed for power efficiency and offers several different power management
modes. The following power management modes affect the power consumption during
different periods of M6e usage and impact performance in different ways. The available
power management modes are:
Power Modes - set in /reader/powerMode - Controls the power savings when the
M6e is idle.
Transmit Modes - set in /reader/radio/enablePowerSave - controls power
savings while transmitting.
Power Modes
The Power Mode setting (set in /reader/powerMode) allows the user to trade off
increased RF operation startup time for additional power savings. The details of the
amount of power consumed in each mode is shown in the table under Power
Consumption. The behavior of each mode and impact on RF command latency is as
follows:
PowerMode.FULL – In this mode, the unit operates at full power to attain the best
performance possible. This mode is only intended for use in cases where power
consumption is not an issue. This is the default Power Mode at startup.
PowerMode.MINSAVE – This mode may add up to 50 ms of delay from idle to RF on
when initiating an RF operation. It performs more aggressive power savings, such as
automatically shutting down the analog section between commands, and then
restarting it whenever a tag command is issued.
PowerMode.SLEEP – This mode essentially shuts down the digital and analog
boards, except to power the bare minimum logic required to wake the processor.This
mode may add up to 100 ms of delay from idle to RF on when initiating an RF
operation. PowerMode.SLEEP is not supported when using the USB interface.
Using the setting PowerMode.MEDSAVE is the same as SLEEP.
Note
See additional latency specifications under Event Response Times.
Transmit Modes
The Transmit Mode setting (set in /reader/radio/enablePowerSave) allows the
user to trade off RF spectral compliance with the Gen2 DRM Mask for increased power
savings while transmitting. The details of the amount of power consumed in each mode is
- M6e Hardware Guide 1
- Revision Table 3
- Contents 5
- A DIVISION OF TRIMBLE 10
- Industrie Canada 15
- Authorized Antennas 16
- Industry Canada 19
- Mercury6e Introduction 21
- 22 Mercury6e Introduction 22
- Hardware Overview 23
- Hardware Interfaces 24
- Digital/Power Connector 25
- Hardware Overview 27 27
- Reset Line 28
- Power Requirements 29
- Power Supply Ripple 30
- Power Consumption 30
- Assembly Information 33
- M6e Mechanical Drawing 34
- M6e-A Authorized Cables 36
- Firmware Overview 37
- Boot Loader 38
- Application Firmware 39
- Custom On-Reader Applications 40
- Communication Protocol 41
- Serial Communication Protocol 42
- Reader-to-Host Communication 43
- User Programming Interface 44
- Frequency Setting 47
- Frequency Units 48
- Frequency Hop Table 49
- Protocol Support 50
- ISO 18000-6B 51
- Delimiter 52
- Antenna Ports 53
- Tag Handling 57
- Tag Read Meta Data 59
- DRM Compliant Mode 61
- Performance Characteristics 62
- Appendix A: Error Messages 65
- Appendix A: Error Messages 67 67
- 68 Appendix A: Error Messages 68
- Solution 68
- Bootloader Faults 69
- Appendix A: Error Messages 71 71
- 72 Appendix A: Error Messages 72
- Protocol Faults 73
- FAULT_NO_TAGS_FOUND – (400h) 74
- FAULT_AFE_NOT_ON – 405h 75
- FAULT_DATA_TOO_LARGE – 40Bh 77
- Appendix A: Error Messages 79 79
- Appendix A: Error Messages 81 81
- FAULT_POOR_RETURN_LOSS – 505h 82
- Tag ID Buffer Faults 84
- System Errors 86
- Devkit Hardware 87
- Connecting the Antenna 88
- Devkit USB Interfaces 89
- Devkit Schematics 91
- Demo Application 92
- Appendix C: Environmental 95
- Considerations 95
- Raising the ESD Threshold 98
- Environmental 99
- Tag Considerations 99
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