User Manual

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USERS MANUAL
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2 Integrating the CM52 Module
2.1 Overview
The CM52 is a dual band, dual mode CDMA transceiver module. It operates in the 800
MHz band for CDMA and AMPS and in the 1900 MHz band for CDMA. It is designed
for consumer and OEM industrial voice and data applications.
The CM52 module is intended for mounting into an application developer’s chassis to
provide wireless communication capability for the product. The target chassis could be
in a wide variety of forms such as a residential electric meter, a point of sale terminal,
an alarm panel, or an automobile console. All initial configuration, mode control, and
operational commands are issued to the module over an RS-232 serial port using a
flexible AT command format. The module circuitry has been designed to meet the
environmental requirements of a large range of commercial and industrial users.
2.2 Mechanical Description
The CM52 has no mechanical elements other than the main PCB assembly. All critical
electronic components are shielded using six cans to prevent internal and external
electromagnetic interference from degrading the module’s performance and to prevent
the module from interfering with other nearby devices. The module is plugged into the
fixed mating connector and secured with four screws.
The antenna interface is provided via a board mounted RF connector at the opposite
end of the board from the system connector. See Section 2.8 for more information on
antenna connector options.
The module has no keypad, display, microphone, speaker, or battery. The following
figures show a mechanical drawing and physical dimensions of the module.
Note! All the measurements are in millimeters.
Figure 1: CM52 Primary Side Figure 2: CM52 Secondary Side