Absolute Pulling Range (APR)
Published by Crystek Corporation
A VCXO is a crystal oscillator where its output frequency changes in direct proportion to the application of an input control voltage. There are many names given or assigned to this output frequency being changed with the control voltage, which can be confusing.
Absolute Pulling Range (APR) has become a very common way to specify a VCXO with simply one parameter which will guarantee the PLL remains locked under all conditions.
Download this whitepaper to learn more.