User's Guide
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Radio 148221 User Guide
RADIO 148221 TRANSCEIVER
The compact Radio 148221 900MHz transceiver replaces miles of cable in harsh industrial environments. Using field-
proven FHSS technology, which needs no additional FCC licensing in the Americas, OEMs can easily make existing
systems wireless with little or no RF expertise.
OVERVIEW
The Radio 148221 is a cost effective, high performance, frequency hopping spread spectrum (FHSS) transceiver
designed for integration into OEM systems operating under FCC part 15.247 regulations for the 900 MHz ISM band.
Radio 148221 transceivers operate in a Masterless architecture. The Radio 148221 instead uses a Timekeeper to
synchronize the network. The Timekeeper can be selected manually or the network can use built in a.i. to pick a
timekeeper. Timekeeper can act as a pseudo gateway in order to synchronize signals or devices can communicate
directly to one another when synchronization is not necessary.
All Timekeeper devices broadcast an RF sync pulse on periodic intervals along with timing information for secondary io
beacons that are pulsed on a digital output line.
Serial data will be routed according to the destination serial number.
Digital input signals will be broadcast and then synchronized on the timekeeper pulses.
To boost data integrity and security, the Radio 148221 uses FHSS technology with data whitening and 16bit CRC data
integrity checks. Configuration data is stored in an on-board EEPROM.
All frequency hopping, synchronization, and RF system data transmission/reception is programmed in the factory and
is performed by the transceiver, transparent to the OEM host.
The manufacturer is responsible for ensuring the final product meets all appropriate regulatory agency requirements
listed herein before shipping any product.
Note: Unless mentioned specically by name, the Radio 148221 modules are referred to as the radio or transceiver.
Individual naming is used to dierentiate product-specic features.
The host (any device to which the Radio 148221 is connected, such as a PC) are referred to as OEM host.
FEATURES
Standard IO - One digital input, 2 digital output lines,
host serial lines for OTA serial.
Options - 10 additional IO/serial communication lines are
available for customization via custom factory rmware
modication.
Standard RF data rate options for 1Watt mode
*123kBaud
Serial data rate is 19,200Baud.
Green LED signaling RF Transmission and Timekeeper
Beacons.
RED LED signaling RF Packet Reception.
Ratings
Operating Temperature -40 to 80C
Operating Voltage 5VDC at Vin relative to ground
Operating Voltage on all io/serial lines is 0V to 3.3V DC.
Operating Humidity < 90%
When operating outdoors use an appropriately rated
enclosure to prevent moisture from contacting the module.
RF Output Maximum 1Watt
RF Frequency range >= 902.4MHz and <= 927.6MHz