User's Manual

COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-6848
FCC ID: NQE-900SSHOPPER
Page 79 of 109
Exhibit 8
The unit operates on 50 discrete frequencies within the ISM band, each frequency
about 400kHz apart. Using a high-speed phase-locked loop synthesizer, the receiver is
able to quickly acquire synchronization with the transmitter and receive the transmitted
data.
The Data Radio is connected to a host device using a 20-pin dual in-line header. This
connection provides the radio with the required DC power source and allows the Data
Radio to be programmed, configured and provides all I/O lines for a fully compliant RS-
232 port.
Data is transported across the RF channel in a transparent, promiscuous mode. In
other words, data sent into the serial port on one radio will be presented out of the
serial port on all other radios that are within range and have the same group code.
Data verification and retries are the responsibility of the host (DTE) device.
The transceiver also provides visual indication of proper operation and valid packet
reception using on-board LED indicators.
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Programming and Configuring Selections