Zhejiang, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Computer Products, Consumer Electronics, Electrical & Electronics, Lights & Lighting, ...
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Signal Generator, Digital Signal Generator, Digital Generator manufacturer / supplier in China, offering Techwin RF Digital Signal Generator, Techwin Mini Optical Fiber Tester OTDR Tw3100 with The Highest Performance, Techwin OTDR Fiber Testing Measurement and so on.

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Techwin RF Digital Signal Generator

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Min. Order: 1 Piece
Port: Shanghai, China
Transport Package: Packaged in Standard Carton
Payment Terms: L/C, T/T, Western Union
Frequency Range: 250kHz~6GHz
Display: Digital
Frequency Resolution: 0.01Hz (0.001Hz Is Also Available)
Sweep Mode: Step Sweep, List Sweep and Power Sweep
Harmonic2: < -30dbc
Sub-Harmonic2: None

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Basic Info

Model NO.: TW4100
Non-Harmonic3: < -62dbc
Max. Weight: Approx. 20kg
Relative Humidity: 5%-95%, ±5%Rh
Trademark: Techwin
Origin: China
Techwin RF Digital Signal Generator
Product Overview:
Techwin TW4100 RF Signal Generators are completely new products designed and developed for communication applications by using the latest technology, covering all commonly-used ranges of radio frequency. Designed with modular structure, all Chinese interfaces, large LCD menu control, extremely low phase noise of output signal, high frequency resolution and accuracy and wide output dynamic range, they are available in abundant analog modulation, digital modulation and program control functions etc. This product can provide complex high-performance analogue signals for testing on communication and radar equipment in product research & development, production, detection and maintenance, etc.

Main Characteristics:
ο Extremely low phase noise and high pure spectrum 
ο Power output of +7dBm~-135dBm 
ο Available in abundant analogy modulation and digital modulation functions 
ο Optional 1Hz~1MHz low frequency signal generator 
ο Chinese/English operation interfaces 
ο List sweep and step sweep 
ο Update with USB Disk

ο Large LCD operation interface
 Designed with completely independent software,Techwin TW4100 RF Signal Generator uses large screen and Chinese operation interfaces which offers a panoramic view of the current state. The operation interface can be set in English according to different purposes and occasions for your convenience.

ο Extremely low phase noise and high pure spectrum
Techwin TW4100 RF Signal Generator provides good close-to-carrier phase noise (-124dBc/Hz, measured at 1GHz and 20kHz) and excellent spectrum purity, which can satisfy the test requirements for pure radio frequency and stimulus signals in radar system development and satellite communications.

ο Update with USB Disk
 With the wide application of USB Disk to modern life,Techwin TW4100 RF Signal Generator provides a USB interface available for smart software update and data backup through which you can easily use a USB disk to update software and maintain the instrument, thus this function is simple and convenient and practical.

ο Expansion of rear panel function
Techwin TW4100 RF Signal Generator provides RS232 interface, GPIB interface, LAN interface, base-band output interface etc. additional expansion interfaces for system building during which LAN interface can be used to achieve the functions of remote control and network update, etc. for user's convenience.
Typical Applications:
Relying on its powerful functions, Techwin Radio Frequency Signal Generator has become widely-used modern intelligent radio frequency measuring instrument, which can provide complex analogy signal for testing on dynamic range, sensibility, adjacent channel property, digital modulation performance etc. internal and external channel's performance index of high-performance transmitter and receiver of various radar and communication equipments as well as local oscillator substitution, distortion test, phase noise test, etc. fields.
Technical Specifications:

Frequency Range




250kHz ≤ f ≤ 250MHz


250MHz <f ≤ 500MHz


500MHz <f ≤ 1GHz


1 GHz <f ≤ 2 GHz


2 GHz <f ≤ 3GHz


3 GHz <f ≤ 6GHz


Frequency Resolution

0.01Hz (0.001Hz is also available)

Timebase Aging Rate (typical value)

1×10-9/day (after 7 days of continuous poweron)

Sweep Mode

Step Sweep, List Sweep and Power Sweep


< -30dBc




< -62dBc

SSB Phase Noise (20kHz frequency offset)


<-127 dBc/Hz


<-121 dBc/Hz


<-115 dBc/Hz


<-110 dBc/Hz


<-109 dBc/Hz


<-104 dBc/Hz

SSB Phase Noise
(dBc/Hz, adding high pure option)

        Freq. offset





250kHz ≤ f ≤ 250MHz





250MHz <f ≤ 500MHz





500MHz <f ≤ 1GHz





1 GHz <f ≤ 2 GHz





2 GHz <f ≤ 3GHz





3 GHz <f ≤ 6GHz





Residual FM (typical value)

< N×1Hz

Output Power Range 

-20dBm~ +7dBm
Adding option 1: -120dBm~+7dBm(-135dBm is also available)

Power Accuracy
(25ºC ±10ºC)

When option 1 programmable step attenuator is not available (-10~-20dBm is typical value)





When option 1 programmable step attenuator is available (≤ -60dBm is typical value)







Modulation Performance


Pulse modulation on/off ratio


Pulse modulation rise/fall time


Internally leveled min. pulse width


Level hold (ALC is off)


Amplitude Modulation5

Modulation mode: exponential mode, linear mode
Modulation rate (3 dB bandwidth, 30% modulation depth): DC~100kHz
Max. amplitude modulation depth: 90% 
Accuracy (1kHz modulation rate, 300Hz~3kHz demodulation bandwidth): 
±(6%×set value+1%)
Distortion (1kHz modulation rate, 30% depth, linear mode, total harmonic distortion): <1.5%

Frequency Modulation5

Modulation rate (3 dB bandwidth, N×100kHz frequency modulation offset): DC~1MHz
Max. frequency modulation offset (typical value): N×1MHz
Accuracy (1kHz modulation rate, 300Hz~3kHz demodulation bandwidth, frequency modulation offset <N×100kHz, except residual frequency modulation): 
±(5%×set value +20Hz)
Distortion (1kHz modulation rate, N×100kHz frequency modulation offset, total harmonic distortion): <1%


Modulation rate (3 dB bandwidth, 3rad phase modulation offset): DC~100kHz
Max. phase modulation offset (typical value): N×10rad
Accuracy (1kHz modulation rate, 300Hz~3kHz demodulation bandwidth, phase modulation offset  <N×10rad, except residual phase modulation): 
±(5%×set value+0.01rad)
Distortion (1kHzmodulation rate, 3rad phase modulation offset, total harmonic distortion): <1%

Modulation Performance

Vector Modulation Module4
(Vector Modulation Module must be configured)

Operating mode: external I/Q input
Input connector: BNC (female)
Input impedance: 50 Ω
Frequency modulation range (typical value, 3dB point): DC~10MHz
Full scale input: 
Carrier suppression (typical value, modulation rate 10kHz): <-40dBc
EVM(typical value, 4Msps, QPSK modulation mode, Nyquist filter, α=0.3): <3%

Base-band Signal Generator
(Option 3 is configured)

Max. code rate: 10ksps~10Msps(MSK;2FSK Max. code rate 2Msps) 
Modulation format: BPSK,QPSK,OQPSK,8PSK,MSK,16QAM,2FSK

Internal Modulation Signal Generator

Function generator provides: amplitude modulation, frequency/phase modulation signals
Sine wave, square wave, triangular wave, ramp wave, noise, dual-sine, swept-sine
frequency range: 
Sine wave, dual-sine, swept-sine: 1Hz~1MHz
Square wave, triangular wave, ramp wave:  1Hz~100kHz
Frequency resolution: 1Hz
Pulse modulation signal: 
Pulse width: 40ns~(42s-20ns)
Pulse period:  100ns~42s
Resolution: 20ns

RF Output Port

Type N (female)



Operation Interface



Dimension (W×H×L)


Max. Weight

Approx. 20kg

Environmental Adaptation

Operating temp.: 0ºC~+40ºC
Storage temp.: -30ºC~ +70ºC (Low temperature is subject to the LCD)
Relative humidity: 5%-95%, ±5%RH


1. 115dB programmable step attenuator
3. Base-band signal generator

2. Vector modulation module
4. High pure option

Ordering Information:
ο Main Unit:
Techwin RF Signal Generator
ο Standard Configuration




Standard Accessories

Power Cord


User's Guide


ο Options






115dB programmable step attenuator


Expand power


Vector modulation module


Generate vector modulation signal


Base-band signal generator


With internal base-band signal generation function


High pure option


Reduce phase noise and increase spectrum purity


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