Keysight Technologies
A Cost-effective Way to Test
Sub 1-GHz Wireless Modules
Application Note
Introduction
Sub 1-GHz wireless modules are used in a wide variety of internet of things (IoT) systems, such as the
automatic meter reading (AMR), traffic signs and signals, security and social alarms, barcode readers,
and motion detection solutions.
Take an AMR system for example, this technology primarily saves utility providers the expense of
periodic trips to each physical location to read a meter. Another advantage is that billing can be based
on near real-time consumption rather than on estimates based on past or predicted consumption.
This timely information, coupled with analysis, can help both utility providers and customers better
control the use and production of electric energy, gas usage, or water consumption.
In an AMR system, sub 1-GHz wireless modules play an essential role in collecting data from terminal
locations. They transmit the meter data to the data collector using the ISM band and it is critical that
they comply with regional and international performance standards such as is FCC Part 15. 247/249,
ETSI EN300 220, ARIB T-96/108.
Water
meter
Electric
meter
Gas meter
Wireless
connectivity
Water
meter
Electric
meter
Gas meter
Wireless
connectivity
Data
collector
Data
collector
Central
database
Figure 1. Block diagram of automatic metering system