ThingMagic Micro Hardware - Manual (Page 67)

Power Management
A D I V I S I O N O F T R I M B L E
62 Functionality of the Micro
Power Management
The Micro 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 Micro 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
Micro is idle.
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 .