Glossary
Band-Pass Filter (BPF)
An electronic device or circuit that passes frequencies within a certain range and rejects frequencies
outside that range.
Cat-M1
LTE-M User Equipment (UE) category with a single RX antenna, specified in 3GPP Release 13.
Cat-NB1
Narrowband Internet of Things (NB-IoT) User Equipment (UE) category with 200 kHz UE bandwidth
and a single RX antenna, specified in 3GPP Release 13.
Clear to Send (CTS)
In flow control, the receiving end is ready and telling the far end to start sending.
DK (Development Kit)
A development platform used for application development.
Fast Identity Online (FIDO)
A bundle of hardware and software modules serving as a tracing interface between traced device(s)
and user application.
Global Positioning System (GPS)
A satellite-based radio navigation system that provides its users with accurate location and time
information over the globe.
Hardware Flow Control (HWFC)
A handshaking mechanism used to prevent an overflow of bytes in modems. It is utilizing two
dedicated pins on the RS-232 connector, Request to Send and Clear to Send.
Inter-integrated Circuit (I
2
C)
A multi-master, multi-slave, packet-switched, single-ended, serial computer bus.
Low-Dropout Regulator (LDO)
A linear voltage regulator that can operate even when the supply voltage is very close to the desired
output voltage.
Low-Noise Amplifier (LNA)
In a radio receiving system, an electronic amplifier that amplifies a very low-power signal without
significantly degrading its signal-to-noise ratio.
nRF Cloud
A cloud solution for visualizing data from Nordic reference designs. See nRF Cloud.
Operational Amplifier (op-amp)
A high-gain voltage amplifier that has a differential input and, usually, a single output.
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