Features 1、The measurement results can be stored on an memory card inserted into the memory card slot, or sent to a PC via USB, and programs such as TimeLab can be run for further display and processing. 2、TinyPFA can display phase and frequency differences digitally, and display the relationship between measurement results and time in a graph. 3、The phase and frequency measurement accuracy is BetterThan 1 e-12 per second. 4、USB rechargeable design, you don/u0027t need to worry its battery. 5、Equipped with a 4-inch touchable display screen, very convenient to carry and operate. Specification TinyPFA is a phase frequency analyzer that can accurately measure the frequency and phase difference between signals applied to two input terminals. The input frequency can be any frequency between 1MHz and 290MHz. A typical use is to measure the difference between two 10MHz clocks. Features: TinyPFA can display phase and frequency differences digitally, and display the relationship between measurement results and time in a graph. The measurement results can be stored on an memory card inserted into the memory card slot, or sent to a PC via USB, and programs such as TimeLab can be run for further display and processing. The phase and frequency measurement accuracy is BetterThan 1 e-12 per second. USB rechargeable design, you don't need to worry its battery. Equipped with a 4-inch touchable display screen, very convenient to carry and operate. Note: TinyPFA is not a frequency meter and its internal reference is inaccurate and unstable. It is only used for measuring the deviation of two signals with similar frequencies. It can be used to compare a signal with a very accurate reference signal. TinyPFA is not a phase noise analyzer. TinyPFA is only available for specific users who require very accurate frequency analysis. Please read the relevant instructions on tinydevices.org to confirm if it is suitable for your use. We do not provides usage guidance. If you are unsure of the purpose of tinyPFA, please do not purchase it. Instructions for use reference: https://www.tinydevices.org/wiki/pmwiki.php?n=tinypfa.homepag Specifications: Main color: black Main material: ABS Battery: 3.7V, 2000mAh Item size: 133 * 75 * 18mm / 5.2 * 3.0 * 0.7in Package size: 170 * 110 * 52mm / 6.7 * 4.3 * 2.0in Package weight: 330g / 11.6ounce Packing List: 1 * Phase Frequency Analyzer 2 * 300mm SMA Male-to-Male ALSR100 RF Cable 1 * Memory Card (Already insert) 1 * Card Reader 1 * USB Cable 1 * Pick Package List 1 * Phase Frequency Analyzer 2 * 300mm SMA Male-to-Male ALSR100 RF Cable 1 * Memory Card (Already insert) 1 * Card Reader 1 * USB Cable 1 * Pick