Signal generator structure

The signal generator consists of a reference oscillator, a frequency synthesis unit, a modulation unit, and a level control unit.
1. Internal frequency sweep output function (full band frequency sweep time less than 5 seconds)
The low-frequency signal generator has the function of automatically changing from low frequency to high frequency (or vice versa), that is, completing the low to high or high to low change process of all frequencies between 100Hz and 20KHZ, and the time for this process is 5 seconds.
Principle and structure of square wave generator with double crystal oscillator
2. With external frequency sweep control input interface (control signal is voltage 0-5V, control current is less than 1mA)
The frequency output by the low-frequency signal generator can be controlled externally (with an external control interface). The voltage at which the external control frequency changes is 0-5V, and the control current is less than 1mA. When the external control voltage varies between 0-5V, the output of the low-frequency signal generator can vary between 100HZ and 20KHZ.