Precautions for selecting high frequency signal generator

Signal generator is a kind of equipment that can generate frequency signal source by itself . If there is a sine signal generator according to the output waveform 、 Square wave signal generator 、 Function signal generator, etc . If divided according to the frequency range of the output signal , There is an ultra-low frequency signal generator 、 Low frequency signal generator 、 Video signal generator 、 High frequency signal generator and ultra-high frequency signal generator . High frequency signal generator is also called RF signal generator , The frequency range of the signal is 350MHz～4G Between , It is widely used in high frequency circuit testing . To test the communication equipment , This instrument has one or more combined modulations （ Including sine amplitude modulation 、 Sinusoidal frequency modulation and pulse modulation ） function . The frequency of its output signal 、 level 、 The adjustment system can be adjusted within a certain range and can read accurately .SYN5651 Type signal generator

The eight elements of high frequency signal generator selection .

1. Sampling rate ; Generally, the sampling rate of high frequency signal generator is expressed in millions of samples per second or Gigabit samples per second , It indicates the maximum sampling rate that the high frequency signal generator can operate . The sampling rate mainly affects the frequency of the output signal . Generally speaking , It should be selected that the sampling frequency is the highest spectral frequency component of the generated signal 2 Times the instrument , To ensure accurate reproduction of the output frequency signal . The maximum sample rate also determines the minimum time increment that can be used to create the waveform .

2. Memory depth ; Also known as storage length , Generally, memory depth or record length plays an important role in signal fidelity , Because the memory depth determines how many data points can be stored to define the quality of a waveform . Deeper memory , Stored waveform details more , The higher the number of cycles required to store the waveform .

3. Vertical resolution ; High frequency signal generator vertical resolution and instrument DAC The binary word length of , Expressed in digits , The more digits , The higher the resolution of the high-frequency signal generator .DAC The vertical resolution determines the amplitude accuracy and distortion of the waveform reproduced by the high-frequency signal . Although the higher the resolution, the better , But most arbitrary waveform instruments have an overall compromise , Because the higher the resolution , The lower the sampling rate .

4. Features and functions ; When selecting the signal generator , However, the stability and smoothness of the standard waveform should also be evaluated before purchasing 、 Modulation function 、 Output amplitude and waveform editing software , Make sure the instrument meets your needs .SYN5651 Type signal generator

5. Meet the signal types and functions required by the application . From an application point of view , If used for digital signal test , Vector signal source is more suitable for ; If it is mainly used to adjust the sensitivity of interphone , High frequency signal generator is needed .

6. The high frequency signal generator meets the frequency range and output amplitude range required in practical use . The frequency coverage of the signal generator is 350MHz～4G The modulation mode and signal output amplitude shall meet the needs of the application .

7. The price is within budget . High and middle grade signal generators are high-value instruments , The high-grade signal generator has excellent performance , Easy to use , But if there is not enough budget , You can also consider renting instead of buying . In addition to the guaranteed performance index of high-end instruments , To a certain extent, it also supports the scene for you , Increase the trust of knowledgeable customers in your test results , Represents the strength of the testing organization .

8. Reliable after-sales guarantee . In addition to instruments , After sales service and maintenance guarantee for purchasing high-value instruments are also very important , Some products have different warranty prices for different years , When buying, you can't just be greedy for cheap . During maintenance , It can provide alternative instruments without affecting the use during maintenance , It's also important. .SYN5651 Type signal generator Quality assurance 1 year , Lifetime maintenance .

Domestic high-end signal generators are mainly Xi'an synchronous electronics , And customize the asset management scheme according to customers' needs , Help customers within budget 、 Meet the latest or changing needs , Don't worry about the use of instruments in the after-sales process .

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