User's Guide

Radio 148221 User Guide
5
HOST LAYOUT
TAPCO suggested Host layout using Samtec SMM-116-02-S-S
*Host layout may use any 2mm pitch connector suitable for mating with Samtec TMM-116-01-S-S-SM.
Frequency Hopping Spread Spectrum
A FHSS radio does just what its name implies – that is, it ‘hops’ from frequency to frequency over a wide band. The
specific order in which frequencies are occupied is fixed but in a pseudo random order.
Modes of Operation
The Radio 148221 has 4 operating functions:
 Transmit serial data
 Receive serial data
 Hardware IO control
 Hardware Beacon outputs
Hardware IO mode acts like a one to many remote controls so when Digital input one on any device is activated,
the radio broadcasts this information to all other radios on a synchronized beacon. When a remote device receives
information that one of the other radios Digital Input 1 has been activated, it activates its Digital Output 1.
Hardware Beacon outputs are configurable at the factory to output a beacon pulse on Digital Output 2 in any 1
second period increment. The Fundamental System Timekeeper generates the timing for this pulse and keeps
Listener radios updated as to the status of this Hardware Beacon Pulse.