User's Manual

GLOSSARY
2003 IPMobileNet, Inc. 41 IPSeries MR User Manual / Rev. A / 04-September-03
PLL Phase Locked Loop - A circuit configuration used to lock the
frequency of a VCO (voltage controlled oscillator) to a high
stability reference oscillator.
ppm Parts Per Million
RF Radio Frequency
RFI Radio Frequency Interference
SINAD The ratio of Signal + Noise + Distortion to Noise + Distortion.
Sensitivity The measure of a receiver’s ability to capture and faithfully
reproduce weak signals.
SMT Surface Mount Technology – electronic components, which
make electrical contact on the surface layer of a PCB (as
opposed to thru-hole components). SMT devices provide
reduced size and increase performance.
SNR Signal-to-Noise Ratio
TCVCXO Temperature Compensated Voltage Controlled Crystal
Oscillator
TIA Telecommunications Industry Association
Transmit Attack Time The elapsed time from transmit key assertion to 90% rated
RF power is achieved.
VCO Voltage Controlled Oscillator – An oscillator whose
frequency can be adjusted by a DC control voltage.