Aug. 25, 2021
A function/arbitrary waveform generator is an instrument that generates standard function signals and can produce arbitrary waveforms. There are several important parameters to consider when selecting a function/arbitrary waveform generator, including the maximum signal output frequency, sampling rate, amplitude range, accuracy, signal quality, arbitrary waveform length and so on. Each of these parameters is relevant to the actual test requirements and application. The next step is to introduce some of the parameters that need to be considered in choosing the right signal generator.
The sampling rate indicates the maximum clock rate or sampling rate. The sampling rate affects the frequency of the main output signal. In general, you should choose an instrument with a sampling rate that is twice the highest spectral frequency component of the generated signal to ensure accurate signal reproduction.
The highest sampling rate in our product is the TFG2900A series of signal generators, with a maximum of 1.2GSa/s.
2. Memory Depth (Record Length)
Memory depth or record length plays an important role in signal fidelity, as it determines how many data points can be stored to define a waveform. The deeper the memory, the more waveform detail is stored and the higher the number of cycles required to store the required waveform.
The TFG3900A series signal generators can store up to 16384 points in length.
3. Features and Functions
When choosing a signal generator, you should evaluate the standard waveform, modulation features to ensure the instrument meets your needs.
The standard waveforms in our signal generators include: sine, rectangle, ramp, pulse, etc. The modulation function is also diverse, including: AM, FM, PM, PWM, FSK, ASK, QPSK, etc. The TFG2900A series of signal generators have a more comprehensive modulation function, so you can choose an instrument with different modulation functions according to your needs.
From the application point of view, if it is mainly used for basic circuit experiments and general electrical appliance repair, then a general function generator is more suitable; if it is mainly used for adjusting the sensitivity of intercoms, then a high frequency signal generator is needed. The highest frequency of our products can reach 3GHz.
5、Frequency and amplitude
The frequency coverage of the signal generator and the signal output amplitude should meet the needs of the application.