High frequency accuracy: frequency accuracy can reach 10-6 order of magnitude High frequency resolution: full-scale frequency resolution is 10mHz No range limit: full-scale frequency is not divided into grades, directly set digitally High waveform accuracy: the output waveform is synthesized by function calculation value, with high waveform accuracy and low distortion Multiple waveforms: sine wave, square wave, triangle wave, sawtooth wave, dual-channel TTL level differential output Scanning characteristics: with frequency scanning function, the scanning start and end points can be set arbitrarily Storage characteristics: 20 groups of user-set instrument status parameters can be stored, which can be called and reproduced at any time Operation mode: full key operation, LCD1602 liquid crystal English display, direct digital setting or knob continuous adjustment Frequency measurement: with 60MHz frequency meter function, can measure the frequency signal of internal/external signals Buzzer prompt sound function: when the instrument is operated, the buzzer will emit an operation prompt sound, which can be turned on or off by the user. Output channel: one main waveform output, two TTL differential level outputs Output waveform: sine wave, square wave (adjustable duty cycle), triangle wave, rising sawtooth wave, falling sawtooth wave. Output amplitude: ≥10Vp-p (no load) Output impedance: 50Ω±10% DC bias: ±3V Frequency resolution: 0.01Hz (10mHz) Power supply conditions: DC5V 1A, including AC220V to DC5V power adapter Frequency scanning range: M1 preset frequency - M2 preset frequency Counting range: 0-4294967295 Frequency measurement range: 1Hz-60MHz Input amplitude: 2Vp-p-20Vp-p Colour:Black & Green Material:plastic note:without adapter Package Contents: 1 * frequency counter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.