Instek SFG-830G 30MHz Arbitrary / Function Generator w/ GPIB Interface

Instek SFG-830G 30MHz Arbitrary / Function Generator w/ GPIB Interface

This Instek SFG-830G 30MHz Arbitrary / Function Generator w/ GPIB Interface is Brand New and has full manufacturer's warranty.

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Stock # 56578-2
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Instek SFG-830 30MHz Arbitrary / Function Generator

  • 30MHz Direct Digitally Synthesized Source
  • 20mHz Frequency Resolution
  • ±10ppm Frequency Accuracy
  • 12Bit, 5M Sample/S Arbitrary Waveforms
  • Sine, Triangle, Ramp and Square Waveforms
  • Internally Synthesized FM, AM and Phase Modulation (PSK)
  • Low Distortion
  • RS232 interface
  • Arbitrary Modulation
  • Linear and log sweeps
  • Optional IEEE-488 Interface only for SFG-830G
  • Free Arbitrary Waveform Composer Software for Windows 95/98/2000


The frequency synthesis method applied by the Instek SFG-830 is Direct Digital Synthesis (DDS), a new technique that generates stable output frequency with extraordinary resolution.

Unlike SFG-830, traditional frequency synthesized function generators typically use Phase Locked Loop (PLL) techniques. In order to synthesize frequencies, PLL should be high-resolution (up to 1:106 in general) and needs a stable frequency to be referenced. Due to the utilization of dynamic loop filter, problems such as poor phase jitter and frequency switching response may occur when running the PLL system. As in generating waveforms, PLL needs a wave-shaping circuit with an address counter that controlled by a variable frequency clock. The counter addresses memory locations in a waveform RAM, and the RAM output is converted by a high speed digital-to-analog converter (DAC) to produce an analog output signal.

Problems like poor phase jitter and transient response may arise here as well. Although DDS also generates analogue waveforms by way of the waveform RAM and high speed DAC, it does not have the problems as PLL does due to the use of fixed frequency clock (fs). Besides, the resolution of DDS is higher than that of PLL’s. DDS’s resolution is fs/2k where the digit of the control frequency word (K), which is more than 32bits in general, decides the quality of it.

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Frequency RangeSine 20mHz - 30MHz
Square 20mHz - 30MHz
Triangle 10mHz - 100kHz
Ramp 10mHz - 100kHz
Frequency Resolution20mHz (10mHz for TRIANGLE and RAMP function)
Frequency Accuracy±10ppm
Frequency Aging±5ppm/year
Source Impedance50Ω±10%
Range10mV - 10Vpp ( into 50Ω ) 8 amplitude ranges
Resolution3 digits
AccuracySine out: ±0.5dB (±5mVrms)
Square out: ±12%(±5mVrms)
Triangle out: ±5% (±5mVrms)
Arbitrary out: ±5% (±5mVrms)
Range±5V ( into 50Ω )
Resolution3 digits
Accuracy±1.5% of setting + 1mV
Sync OutputTTL levels
Sync Fan-out> 10 TTL load
HarmonicsDC - 100kHz: -50dBc
0.1M - 1MHz: -40dBc
1M - 10MHz: -30dBc
10M - 30MHz: -25dBc
Rise / Fall Time≤15nS
Overshoot≤5% ( at full scale output )
Asymmetry±1% of period + 4nS
Linearity±0.1% of full scale output
Sample Rate42.949600MHz/N, N=8, 10, 12, ... 215
Waveform Length12,000 points max.
Vertical Resolution12 bits
Sweep FunctionsLIN or LOG
Sweep Range20mHz - 30MHz
Sweep Time0.01S - 1000S
AM Modulation FunctionExternal, Internal ( sine, triangle, ramp, square )
Modulation Rate10mHz - 10kHz ( Internal ), 50kHz max ( external )
Modulation Span0 - 100%
Ext. Input±5V for 100% modulation
Ext. Input Impedance100kΩ
FM Modulation FunctionSine, Triangle, Ramp, Square
Modulation Rate10mHz - 10kHz
Modulation Span30MHz ( 100kHz for triangle, ramp )
PM Modulation Span360 Degrees
Modulation Rate20mHz - 10kHz
InterfaceRS232 standard
GPIB interface GPB-01 (Option)
Free Arbitrary waveform composer software for Window 95/98/2000 SFG-S1 (require GPIB)
Power SourceAC 100V/120V/220V/230V±10%, 50/60Hz
AccessoriesPower cord × 1
Instruction manual × 1
GTL-101 × 2
Dimensions & Weight214(W) x 89(H) x 370(D) mm, Approx. 4.8kg

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Instek SFG-830 30MHz Arbitrary / Function Generator

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