TFG1900B Series

Cheap frequency signal generator for sale


TFG1900B Series belonging to a low price function generator, with one channel output, 3MHz/5MHz/10MHz/20MHz for Sine, high precision PCB designed, can make the test quickly and accurately. Working at AC 100-240V voltage power, adopting the DDS technique, it is an inexpensive electronics test and measurement instrument for R&D, education, etc.

Product Model



* Simple structure and highly cost-effective

* Output 16 waveforms

* AM,FM,PM,PWM and FSK modulation

* Provide frequency sweep and burst

* Standard configuration interface: USB Device


RangeSine10μHz ~ 3MHz10μHz ~ 5MHz10μHz ~ 10MHz10μHz ~ 20MHz
Square10μHz ~ 5MHz
Others10μHz ~ 1MHz
Type16 waveform, Sine, Square, Ramp, Exp, Log, Noise, etc.
Length1024 points
Sampling Rate100 MSa/s
Vertical Resolution8 bits
SineHarmonic Distortion



Total Distortion≤0.5% (20Hz ~ 20kHz, 20Vpp)   
SquareRise/Fall Edge Time≤35ns        Overshoot: ≤ 10 %
Duty Cycle0.1% ~ 99.9%
RampSymmetry0.0% ~100.0%
RangeFrequency≤8MHz0 ~ 10Vpp(50Ω),0 ~ 20Vpp(Open circuit)
Frequency>8MHz0 ~ 9Vpp(50Ω), 0 ~ 18Vpp(Open circuit)
DC Offset (Ampl.   0Vpp)
Range±5Vdc (50Ω), ±10Vdc (Open circuit)
FM,AM,Carrier Waveform

16 waveforms, Sine, Square, Ramp, etc.

(only Pulse for PWM)

PM,PWMModulating Waveform16 waveforms, Sine, Square, Ramp, etc.
Modulating Frequency40mHz ~ 20kHz
FSKCarrier Waveform16 waveforms, Sine, Square, Ramp, etc.
Modulating WaveformSquare
FSK Rate40mHz ~ 100kHz
Frequency Sweep
TypeLinear or Logarithmic
Sweep Time50ms ~ 500s
Trigger SourceInternal/External/Manual
Burst Waveform16 waveforms, Sine, Square, Ramp, etc.
Burst Count1 ~ 1000000
Internal Period1μs ~ 20s
Start Phase0° ~ 360°
Trigger SourceInternal/External/Manual
SYNC Output
Electrical Level
TTL compatible
Waveform   CharacteristicSquare, edge time ≤ 20ns
Output Levellow   level<0.3V, high level>4V
General   Characterisctics
PowerAC 100 ~ 240V, 45 ~ 65Hz, < 20VA
DisplayLCD display
Dimension &   Weight322×256×102mm, Approx.1.5kg

When looking for cheap signal generators for sale, it's essential to understand what "cheap" means in this context. A cheap signal generator doesn't necessarily imply compromised quality or unreliable performance. Instead, it refers to affordable options that cater to specific requirements and limited budgets.

The Advantages of Affordable Signal Generators

Investing in an affordable signal generator can offer several advantages, including:

Cost-Effectiveness: Budget-friendly signal generators allow you to access essential features without breaking the bank, making them ideal for entry-level projects and educational purposes.

Learning Opportunities: For students and beginners, affordable signal generators provide valuable hands-on learning experiences without a significant financial burden.

Hobbyist Projects: Enthusiasts and hobbyists can explore their creative ideas and experiment with electronics using cost-effective signal generators.

Factors to Consider When Choosing Affordable Signal Generators

While searching for affordable signal generators, consider the following factors to ensure you find a suitable option:

Frequency Range: Determine the required frequency range for your projects. Choose a signal generator that meets your specific frequency needs.

Output Power: Depending on your application, select a signal generator with sufficient output power to drive your system effectively.

Modulation Capabilities: Verify that the signal generator supports the modulation types essential for your applications, such as amplitude modulation (AM) and frequency modulation (FM).

Signal Purity and Accuracy: Even in budget-friendly options, look for signal generators with low phase noise and high signal purity for accurate waveform generation.

Connectivity Options: Check the available connectivity options, such as USB, Ethernet, or GPIB, to ensure seamless integration into your setup.

User Interface: Consider the user interface and control options. An intuitive interface can significantly impact your user experience.

Standard Accessories

Power Cord:1pcs

CD(Software+ User's Guide):1pcs


Power Amplifier  (output power:10W)