WF1973 (1-channel, 0.01µHz to 30MHz Multifunction Generator with Sequence Function)

Brand: NF
Model Series: WF197x Series

About Product

As to effortless waveforms generation via intuitive graphical user interface, the NF WF197x Series Multifunction Generators with Sequence Function are fully equipped with the functions and performance which are required for various applications.

Product Features

  • Display screen: 5” Color TFT LCD display with the QVGA high resolution
  • Wide frequency range: Oscillation frequency in range of 0.01µHz to 30MHz
  • Maximum output voltage: 20Vp-p/open, 10Vp-p/50Ω
  • High accuracy, precision, stability and reliability
    • Frequency accuracy: ± (3ppm of setting + 2pHz) (external frequency reference of 10 MHz usable)
    • Frequency resolution: 01µHz
    • Amplitude accuracy: ± (1% of amplitude setting [Vp-p] + 2mVp-p)/open
    • Phase setting resolution: 001° (Setting range:  –1800.000° to +1800.000°)
    • Duty setting range: 0000% to 100.0000%; resolution: 0.0001%
    • Pulse wave rising/falling time: 0ns to 58.8Ms; 3-digit resolution/0.1ns
    • Resolution of arbitrary waveform data amplitude: 16-bit
  • Wide array of oscillation modes: Continuous, burst/trigger/gate, internal/external modulation, sweep and sequence oscillation
  • Various types of output waveforms: Sine, Square, Pulse, Ramp, Noise, DC, Parameter-variable and Arbitrary Waveforms
  • 2-channel mode: Two independent channels, two phases, constant frequency difference, constant frequency ratio and differential output (WF1974)
  • Functions include synchronous operation of multiple units, usable as a pulse generator, external addition input and user-defined units
  • Pursuit of usability
    • Flat and lightweight (88 mm high, 2.1 kg)
      • Each channel insulated from the housing
    • USB & GPIB interfaces are provided as standard
  • Large capacity arbitrary waveform memory: 512kWords max, saving capacity:  128 Waveforms/4M Words
  • Phase and waveform remain continuous even when frequency is changed or during frequency sweep
  • Sequence function for easy test waveform creation and adjustment
    • Flexible waveform creation is possible through combination with standard parameter-variable waveforms. Frequency, phase and amplitude can be rapidly changed and swept
  • Input/output signal ground independent of housing and signal ground between channels also insulated
  • Output voltage under specified load impedance can be set and displayed
  • External signals can be added and output
  • Up to ten settings can be saved
  • Arbitrary Waveform Editing Software, Sequence Editing Software and LabVIEW Driver are provided as standard

Product Functions


  • Wide array of output waveforms: Sine, Square (Variable duty), Pulse (Variable pulse width/duty, leading edge time, trailing edge time), Ramp (Variable symmetry), CF Controlled Sine (Variable crest factor), Staircase Sine (Variable number of steps), Gaussian Pulse, Sine(x)/x (Variable number of zero crossings), Exponential Rise/Fall (Variable time constant), Damped Oscillation (Variable oscillation frequency, damping time constant), Pulse Surge (Variable rising and duration times) and Trapezoid (Variable rise, fall and upper base width) (See photo section)
  • Parameter-variable waveforms
    • NF has incorporated an innovative waveform library called a parameter-variable waveform function. The parameter-variable waveform offers an easy-order waveform system. The appropriate waveform for your purpose can be generated easily: just select a preprogrammed waveform and edit it using parameters specific to your requirements. The 25 types of available waveforms include circuit-related, communication-related and machine-related waveforms (See photo section)
  • Arbitrary waveform
    • Arbitrary waveforms up to 512k Words can be output. Up to 128 waveforms can be stored in the large 4M Words memory. Highly precise waveforms are generated using high-resolution (14-bit), high-speed (120M samples/sec) sampling. Waveforms can be generated easily either via the control panel (linear interpolation of control points) or in software using the Arbitrary Waveform Editor, which also allows external data to be imported and mathematical expressions to be applied. Preprogrammed parameter-variable waveforms can be quickly generated, retrieved and edited as required
  • Wide array of oscillation modes
    • Sweep and modulation functions
      • Frequency, phase, amplitude, DC offset and duty sweeps can be performed in one- way or shuttle, linear or logarithmic slope (Logarithmic mode is supported only for frequency sweeping), and continuous, single-shot or gated single-shot modes. Marker and X-drive outputs are available. DC offset modulation and PWM mode are supported as well as FM, FSK, PM, PSK, and AM – both internal and external modulation. These function generators can address a wide range of applications, including baseband functional testing for digital communications (See photo section)
    • Burst/Trigger/Gate
      • In the burst oscillation mode, oscillation can be started or stopped at any wave count.WF197x Series support four modes, as to Auto Burst (No trigger is needed), Trigger Burst (Oscillation in sync with the trigger), Gate (Oscillation in sync with the gate signal) and Triggered Gate (Gate oscillation switched on/off by gate upon trigger). The phase where oscillation starts/stops and the level at which oscillation starts/stops can be set (See photo section)
    • Continuous oscillation
    • Sequence oscillation
  • Sequence function
    • The sequence function programs and sequentially outputs parameters such as waveform, frequency and amplitude. Repetition, jump and other such behavior can be programmed, so constantly changing signals – such as machine vibration and voltage fluctuation—and long complex output patterns can be generated easily. The sequence function allows sudden changes to parameters, and can be used with parameter-variable waveforms and sweep functions. The sequence function substantially expands the range of applications for which our function generators are suitable (See photo section)
    • Parameters: Waveform, frequency, phase, amplitude, DC offset, square wave duty, step time, hold operation, jump destination, number of jumps, step stop phase, branch operation, step termination control, and more
    • Number of steps: 1 to 255 per sequence
    • Number of saved sequences: 10
    • Maximum number of usable waveforms: 128
  • 2-channel mode (WF1974)
    • The WF1974 is a dual-channel function generator. Each channel is insulated from the housing and has the same functions and performance as a single-channel WF1973. In addition, the WF1974 offers two phase, constant frequency difference, constant frequency ratio and differential output – all features that are unique to NF dual-channel function generators (See photo section)
    • Independent output (Indep): Two channels programmed separately
    • Two-phase (2-phase) Same frequency: Same frequency
    • Constant frequency difference (2-Tone): Difference in frequencies is constant
    • Constant frequency ratio (Ratio): Ratio of frequencies is constant
    • Differential output (Diff): Reverse phase waveform with identical frequency, amplitude and DC offset
  • As pulse generator
    • With great speed and operability, the WF197x Series show excellent performance when used as a pulse generator or signal source for digital circuits. The duty/time, rising time, and falling time of pulse waves can be individually set, so these generators are best suited to operation testing of a wide variety of digital equipment and devices, data transmission equipment, and more (See photo section)
  • External 10MHz frequency reference input
    • A high-accuracy frequency can be output when an external 10 MHz standard signal is input into the external 10 MHz frequency reference input (REF IN)
  • Synchronous operation of multiple generators
    • Synchronous operation of up to six units is possible in the form of master/slave connections (A BNC cable is used for connection) using the frequency reference output (REF OUT) and frequency reference input (REF IN). A multi-channel (multi-phase) oscillator can be configured
  • User-defined unit function
    • The frequency, period, phase, amplitude, DC offset and duty can be set and displayed in desired unit (up to four characters), using a specified conversion expression

Product Application

  • Electronic equipment and parts
    • Ultrasonic motor drive testing, differential/balanced input testing, LCD panel operation testing, copier drum (developing bias) testing, digital circuit evaluation testing and evaluation of ICs
  • Communication and audio equipment
    • Testing of echo cancellers which act as IQ signal generator/clock sources for next-generation mobile communication systems, amplifier and speaker tone burst testing and linearity measurement and wireless communication equipment evaluation testing
  • Automobiles
    • Gear rotation signal simulation, precision work for turbo chargers, inverter evaluation, ABS and power-steering device testing, ECU and sensor operation testing
  • Machinery, controls and construction
    • Industrial robot and servo system adjustment and testing, pulse motor driving, building vibration experiments (for incorporating vibration testers), water-tank-based wave generation tests and material fatigue testing
  • Simulation of bio-signals
  • Electrolysis
  • Electroplating
  • Battery charge/discharge testing
  • Breaker testing
  • Three-phase power source simulation
  • Power source modulation testing
  • A frequency standard for measurement equipment management room
  • Experiments and science projects in universities and technical colleges

Standard Accessories

  1. GPIB Interface
  2. USB Interface
  3. Instruction Manual
  4. CD: PDF Manuals, Arbitrary Waveform Editing Software, Sequence Editing Software and LabView Driver
  5. Power Cable

Product Options

  1. PA-001-1318: Multi Input/Output Cable
  2. 1991A: Synchronized Operation (Factory Option)
  3. 1994A: Cable for Synchronized Operation

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Our Company

Miko, established in 1980, is a leading instrumentation distributor in Hong Kong and China.

Over the years, we have been fully engaged in the sales and marketing of electronic T&M instruments in the territory. Our market sector coverage includes telecommunication, power, data communication, audio, broadcasting and education.