KKmoon 20MHz High Precision DDS Generator Digital DDS Dual-channel Signal Generator Function Signal/Arbitrary Waveform Generator Pulse Signal Source 250MSa/s Frequency Meter VCO Burst AM/PM/FM/ASK/FSK/PSK Modulation Function Signal Generator

Features:
Adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals.
2.4 inch TFT color LCD with 320*240 resolution, simultaneously display parameters and graphics of CH1 and CH2.
Adopt MagicPulse Technology, Low Jitter(RMS)200ps.
The instrument uses 14-bit high-speed D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution.
Can output up to 98 groups of functions / arbitrary waveform, contains 33 groups of preset waveforms and 64 groups of user-defined waveforms. Preset waveforms: Sine, Square (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, CMOS(0～12V), Four channels TTL, Exponential Rise, Exponential Fall, Noise, ECG, DC etc.
Enable to store 64 arbitrary waveform data files, each one of waveform storage depth 8192 points * 14bits; (The longer the waveform storage depth, the more detail the waveform is saved, and the signal details can be restored with high precision.)
Various modulation types: AM, FM, PM, ASK, FSK and PSK modulations.
Sweep Function: it can sweep 4 properties of signals including frequency, amplitude, offset and duty cycle; It has Linear and Logarithm two sweep types; 0.01S～999.99S sweep time; Up, Down and roundtrip sweep directions.
VCO Function (Voltage Control Output): can be achieved by an external input signal: voltage controlling frequency, voltage controlling amplitude, voltage controlling offset, voltage controlling duty cycle and PWM modulations.
Burst Output Function: there has Manual Trigger, internal CH2 Trigger, and External Trigger for your options. It can output 1～1048575 pulse trains.
100M Frequency Meter Function: it can measure frequency, period, pulse width and duty cycle. Max. frequency workable is 100MHz and Min. frequency workable is 0.01 Hz.
Counter Function: it has 2 coupling measure modes including DC coupling and AC coupling. This design can solve inaccuracy problem of AC coupling.
Standard dual full functional channels which are equivalent to two independent generators.
Channel SYNC Function: support waveform copy and state copy between channels.
Support two or more signal generators connected to achieve multi-channel output, the maximum support 16-channel synchronous output, the phase between each channel can be adjusted.
Precisely adjust the phases of the two channels. Precision can be 0.01.
Min amplitude resolution can be up to 1 mV. Amplitude range is 0～24Vpp.
Duty-cycle of each channel can be adjusted independently 0.01%-99.99%, the adjusting resolution is 0.01%.
-12V～+12V DC Offset function. Resolution 0.001V.
Save Function: it can save 20 sets user-set parameters and can be loaded at any time.
Communicating Function: all functions can be controlled by PC program and the communication protocol is open for secondary development.
Output Short-circuit Protection: all channels can work more than 60 seconds when the load is short-circuited.
Provide powerful waveform editing PC software. Users can download arbitrary waveform to this instrument after edit through PC program which is included in user CD.
Adopt ABS plastic shell with table type design. Use 100-240V (AC) wide range voltage power supply.
Specification:
Plug Type: AU / EU / US / UK (Optional)


Frequency


Model
FY6900-20M


Sine
0~20MHz


Square
0~15MHz


Ramp, Triangle
0~10MHz


Pulse
0~10MHz


TTL/CMOS
0~10MHz


Arbitrary Waveform
0~10MHz


Minimum Pulse Width
20ns(All models of pulse wave minimum width can reach 20ns)


Min. Resolution on all frequency range
1μHz (Min. resolution can reach 1μHz on all frequency range to ensure adjusting accuracy under high frequency. For example, it can output 10.000000000001MHz signal).


Accuracy
20ppm


Stability
1ppm/ 3hours


Waveform Characteristics


Waveforms
Sine, Square,Rectangle (Duty Cycle adjustable), Pulse (Pulse width and cycle time can be set accurately), Triangle/Ramp, Sawtooth Wave, CMOS, Four channels TTL, DC, Half wave, Full wave, Positive Step, Inverse Step, Positive Exponent, Inverse Exponent, Lorenz Pulse, Multitone, Noise, ECG, Trapezoidal Pulse, Sinc Pulse, Narrow Pulse, Gauss White Noise, AM, FM, and other 64 sets customer-defined waveform.


Non-Volatile Storage
Can store 64 user-defined arbitrary waveforms, (8K 14bits) * 64


Waveform Length
8192points * 14bits


Sampling Rate
250MSa/s


Vertical Resolution
14 bits


Sine
Harmonic Suppression
50dBc(1MHz); 45dBc(1MHz~20MHz);


Total Harmonic Distortion
0.5% (20Hz~20kHz,0dBm)


Rectangle
Rise/Fall Time
7ns (VPP5V)


Overshoot
5%


Duty Cycle
0.01%~99.99% (Resolution 0.01%)


Sawtooth Wave
Linearity
99% (0.01Hz~10kHz)


Output characteristics


Amplitude（VPP）
Frequency5MHz: 1mVpp~24Vpp;
5MHz10MHz: 1mVpp~20Vpp;
10MHz
Frequency20MHz: 1mVpp~5Vpp;


Resolution
1mV


Amplitude Stability
0.5%/ 5 Hours


Amplitude flatness
2.5%(10MHz);5%(10MHz)


Waveform Output


Impedance
50Ω10%（Typical）


Protection
All channels can work more than 60 seconds when the load is short-circuited.


DC Offset


Offset Range
Frequency20MHz: 12V;Frequency20MHz: 2.5V;


Offset Resolution
1mV


Phase Feature


Phase range
0~359.99


Phase resolution
0.01


TTLOutput


TTL Level Amplitude
3Vpp


Fan-out
8 TTL LOAD


Rise/Fall Time
10ns


CMOSOutput


Low Electric Level
0.3V


High Electric Level
1V~12V


Rise/Fall Time
18ns


External Measurement


Function
Frequency, Period, Positive/Negative Pulse Width, Duty Cycle


Input Voltage Range
1Vpp~20Vpp


Frequency Meter
Resolution
0.01Hz(Gate Time = 100S)


Range
0.01Hz~100MHz


Sensitivity
Gate Time 3 grades (1S, 10S, 100S) adjustable


Counter
Range
0-4294967295


Coupling
DC, AC


Working Mode
Manual


Period
Measurement Range
5ns ~ 20s
DC coupling measurement


Pulse Width
Measurement Range
0ns ~ 20s


Resolution
5ns


Duty Cycle
Range (Display)
0% ~ 100%


Sweep


Carrier Waveform
Sine, Square, Ramp, Arbitrary(except DC)


Sweep Type
Linear or Logarithm


Sweep Direction
Up, Down and roundtrip sweep directions


Sweep Objects
Frequency, Amplitude, Offset, Duty Cycle


Sweep Time
0.01S~999.99S/Step


Setting range
Starting position and Finishing position can be set arbitrarily.


Sweep Range
Decided by Parameters setting.


VCO (Voltage Control Output)


Modulation signal range to input
0~5V


VCO signal frequency range
0-2000Hz


VCO control object
voltage controlling frequency (VCF), voltage controlling amplitude (VCA), voltage controlling offset, voltage controlling duty cycle.


VCO special function
Can Amplitude Modulate (AM) or Frequency Modulate (FM) by external analog signal.


Modulation


Modulation Type
AM, FM, PM, ASK, FSK, PSK


Carrier Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform (Except DC)


AM


Source
Internal (CH2) / External (VCO IN Port)


Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform


Depth
0% to 120%


Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;


FM


Source
Internal (CH2) / External (VCO IN Port)


Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform


Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;


PM


Source
Internal (CH2) / External (VCO IN Port)


Modulating Waveform
Sine, Square, Triangle, Ramp, Arbitrarywaveform


Phase Deviation
0 to 360


Modulating Frequency
Internal :1μHz~1MHz; External: 1μHz~2KHz;


ASK


Source
Internal (CH2), External (ASK IN Port), Manual


Modulating Waveform
Square with 50% duty cycle.


Key Frequency
1μHz~10MHz


FSK


Source
Internal (CH2), External (FSK IN Port), Manual


Modulating Waveform
Square with 50% duty cycle.


Key Frequency
1μHz~10MHz


PSK


Source
Internal (CH2), External (PSK IN Port), Manual


Modulating Waveform
Square with 50% duty cycle.


Key Frequency
1μHz~10MHz


Burst Function


Carrier Waveform
Sine, Square, Ramp, Arbitrary(except DC)


Burst Count
1~1048575


Trigger Source
Manual, Internal, External (AC/DC)


General