Intermec IM11, Руководство по интеграции

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IM11 RFID Reader Module Integration Guide (Confidential) 17
In most situations, Overtemperature mode adequately protects the
module against very high temperatures. However, if you use the
module in a high duty-cycle operation for extended periods of time at
elevated temperatures, you may want to attach a heatsink to the
perforated top shield of the IM11. For proper placement, refer to the
illustration of the page 14
For optimal thermal performance, connect the top shield of the
module to a metal surface with good air flow or access to the lower
temperature case exterior. To connect these surfaces, use a low
thermal resistance material, such as themal grease or a thermally-
conductive spacer.
Electrical Integration
The module communicates either over USB or through serial:
• The USB client communication follows the CDC profile (a
Microsoft standard driver) and is USB 2.0-compliant, operating at
12 Mbps (full speed). For more information, see
“Open a USB
Connection” on page 32 .
• In Serial mode, the module communicates as a standard PC COM
port, operating at 115.2 Kbps. It has eight general purpose inputs
and outputs for monitoring and controlling external signals. For
more information, see
“Open a Serial Connection” on page 31 .
A Digital Signal Processor (DSP) controls the radio functions and
provides communication with the host. This interface allows direct
reprogramming and updating of the on-board FLASH memory. It has
64 MB of DDR and 4 MB of SPI FLASH available.
Power Requirements
The module operates off power input from 3.15 VDC to 5.2 VDC. If
the input is 3.3 V DC or less, you must account for significant
increased current demand. If the input drops below 3.15 VDC, 1 Watt
output is not possible.