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How to select a suitable signal generator?

Mar. 31, 2021

Signal generator is a common instrument in area of education, science, telecommunication, industry, etc., which can generate standard function or arbitrary waveform signal. Then how to select a suitable signal generator? Parameters such as

maximum frequency, output channels, frequency resolution, sample rate, accuracy, amplitude, waveforms, etc. should be considered.

 

Here we introduce key factors for your reference:

 

1.    Sample Rate

Sample rate indicates the maximum clock rate or sample rate when generator works, usually expressed in XXX M points per second or XXX G points per second (MSa/s or GSa/s). Generally speaking, you need to select the ones whose sample rate is twice of the highest frequency component of the signal to guarantee the signal is shown accurately. It also influences the minimum time increment of the waveform.

2.    Waveform Length

Waveform length plays an important role in the signal fidelity, because it can define a waveform by storing the data points. The more points the waveform has, the more details of waveform can be stored.

3.    Vertical Resolution

Vertical resolution is related to generator’s DAC binary word length, expressed in bits. The more bits are, the higher resolution is. DAC vertical resolution influences waveform’s amplitude accuracy and distortion. Although the higher the better, most generators use the compromise, because the higher the resolution is, the lower the sample rate is.

4.    Features and Functions

The standard waveform, modulation function, amplitude and waveform editor, etc. should also be taken into your consideration.

5.    Competitive price and better after sale service

 

Attached the selection guide of generators provided by Suin.

And welcome to contact us if you are interested in any one.



TFG6800 SeriesTFG2900A SeriesTFG3600 SeriesSU3630TFG3900A SeriesTFG6900A SeriesTFG1900B SeriesTFG1900A Series
Max Frequency100MHz400MHz1500MHz3GHz160MHz60MHz20MHz20MHz
Channel22 or 4212212
Frequency   Resolution1μHz1μHz1μHz3Hz1μHz1μHz10μHz1μHz
Best Accuracy20ppm1ppm1ppm±5ppm2ppm50ppm50ppm20ppm
Sampling Rate250MSa/s1.2GSa/s50MSa/s500MSa/s120MSa/s100MSa/s100MSa/s
Vertical   Resolution16 bits14 bits10 bits14 bits14 bits8 bits10 bits
Output level Max 20VppMax 10Vpp   -127dBm ~+13dBm   -60dBm ~+10dBm Max 20Vpp Max 20Vpp Max 20Vpp Max 20Vpp
Waveform165   kinds including Sine, Square, Ramp, Pulse, Noise, DC, PRBS, user-defined   Arbitrary waveform, user-defined harmonic, etc165   kinds including: Sine,  square,  ramp,    pulse,  noise, PRBS, Arbitrary   waveforms and user-definedCHA:   Sine, Square                             CHB: Sine, Square, Ramp, Pulse, and 4 built in waveforms Sine150   kinds including: Sine,  square,  ramp,    pulse,  noise, PRBS, Arbitrary   waveforms and user-definedSine,  square,    ramp,  pulse,  noise +50 built in Arbitrary waveforms + 5   user-definedSine,  square,    ramp,  pulse, Exponent,   Logarithm, Noise, etc. totally 16 waveforms11   built in waveforms + 5 user-defined
DC Offset
TTL
Sweep
Modulation

FM,AM,

PM,PWM,

Sum,FSK,

4FSK,NFSK,PSK,4PSK,

NPSK,ASK,OSK

FM,   AM, PM, PWM, Sum, FSK, 4FSK, NFSK, PSK, 4PSK, NPSK, ASK, OSKFM, AM, FSK, PSKPulseFM,AM,PM,PWM,   Sum,FSK,4FSK, QPSK,,ASK,OSKFM,AM,PM,PWM,   Sum,FSK, BPSKFM,AM,PM,PWM,   FSKFM,AM,PM,PWM,   FSK
Burst
Frequency   Counter0.1Hz~350MHz0.01Hz~350MHz1Hz~100MHz
Display7''   TFT LCD touch screen7''   TFT LCD touch screen4.3'' TFT LCD4.3'' TFT LCD4.3'' TFT LCD4.3'' TFT LCDVFDVFD
InterfaceUSB   Host & Device and LAN, WIFIUSB   Host & Device , LAN, WIFIUSB Device, RS-232USB   Device, RS-232USB   Host & Device and LANRS-232,   USB Host & DeviceUSB DeviceUSB   Host & Device 
OptionsTCXO,   Power Amplifier, IOT interfaceFrequency CounterGPIB,   Frequency CounterGPIBAmplifierAmplifier, TCXO