DF3390B digital frequency meterDetailed product description：

Features:
Adopting large-scale frequency measurement integrated circuits and ultra high speed frequency division circuits.
Equipped with equal precision measurement and easy touch button control.
It has four measurement functions: frequency measurement, cycle measurement, cumulative counting, and self checking.
There are two measurement channels, HF and UHF.
Eight digit digital display.
Automatic decimal point positioning.
The unit indicator light automatically displays.
Equipped with overflow indicator.
There is a standard frequency self-test function.
Equipped with a low-pass filter.
Novel plastic casing, compact and beautiful in appearance.

Main technical parameters of DF3390B digital frequency meter:

HF frequency measurement range: 1Hz~100MHz
UHF frequency measurement range: 100MHz~2.4GHz
Periodic measurement range: 10Hz to 2.5MHz
Counting measurement range: 108-1 (10Hz~10MHz)
Frequency stability: 1 × 10-5/day
Maximum measurement sensitivity: better than 25mVrms
Input impedance: 1M Ω/35pF (HF channel) 50 Ω (UHF channel)