User's Manual

GLOSSARY OF TERMS

516.80540.UM-Rev. D 1-Jun-07 Page 37 of 38

PCB Printed Circuit Board

Phase Linearity Implies a linear relationship between the phase of a signal

and the frequency of that signal. A linear phase response

ensures constant input to output delays regardless of

frequency, import for wireless communication systems.

Phase Noise A measure of the purity of a discrete frequency (expressed

in –dBc/Hz at some offset frequency).

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.

SLIP Serial Line Internet Protocol. Protocol that allows connection

to the Internet via a dial-up connection.

SMT Surface Mount Technology – electronic components, which

makes 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.