Honeywell International Inc. IM11PRT Manuale Utente

* You cannot turn off the RTC unless you remove power Pin 2 
(VBATT) on the mini-PCI connector.

* < 6 ms required to load the software to load the module. After loading the 
software, the module stays idle (~110 mW) until a read is requested. When a 
read is finished, the unit returns to idle. Duty cycling is employed to quiet 
tags that have already been read and to ensure the host system transmitter 
does not stay on all the time.

This section explains the power draw of the IM11 under various 
operating conditions. These are the four tests that were conducted:

Test A: READ REPORT=EVENT: This test uses default values 
and starts a continuous read. It takes advantage of the duty cycle 
to save power, and resets the tags after every inventory round so 
the tags keep responding.

Test B: ATTRIB UNSELTRIES=0, READ REPORT=EVENT: 
This test uses the default values of the reader except for 
UNSELTRIES. The continues read takes advantage of the duty 
cycle to save power. Setting UNSELTRIES=0 prevents the reader 
from resetting the tags. After the initial inventory round, the tags 
remain quiet until session 2 persistence wears off. This is the 
recommended configuration for reading large tag populations in 
continuous mode.

Transition State

Transition Time

Off to Deep Sleep

100 ms

Deep Sleep to Tag Read

< 6 ms*

Idle to Tag Read

Time for USB device to respond to USB 
wakeup is about 10 ms.

Time for serial to respond is about 100 ms for a 
10 byte command will take 100 ms at 115.2 
kbps.