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Above all else, function generators must be very accurate.

The WF1973 and WF1974 are high-specification instruments that deliver exceptional precision,

stability and reliability in support of a wide variety of applications.


Output Waveforms: Sine, square, pulse, ramp, noise, DC, arbitrary and parameter-variable


Arbitrary waveforms up to 512 K words can be output.

Up to 128 waveforms can be stored in the large 4 M 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 retrieved and edited as required.


Oscillation Modes: Continous, burst/trigger/gate, internal/external modulation,


 sweep and sequence Sweep and modulation functions

   Frequency, phase, amplitude, DC offset and duty sweeps can be performed in one-way or shuttle,

   linear or logarithmic slope*, and continuous, single-shot or gated single-shot modes.

   Marker and X-drive outputs are available. DC offset modulation and PWM modes 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.

    * Logarithmic mode is supported only for frequency sweeping.



   In the burst oscillation mode, oscillation can be started or stopped at any wave count.

   WF1973 and WF1974 support four modes;


• Auto burst: No trigger is needed

• Trigger burst: Oscillation in sync with the trigger

• Gate: Oscillation in sync with the gate signal

• Triggered gate: Gate oscillation switched on/off by gate upon trigge

                       The phase where oscillation starts/stops and the level at which oscillation starts/stops

                       can be set.


 As pulse generator

   With great speed and operability, the WF1973 and WF1974 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.


 External 10 MHz frequency reference input, synchronous operation of multiple


   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 up to six units is possible

   in the form of master/slave connections*, using the frequency reference output (REF OUT) and frequency

   reference input (REF IN). A multi-channel (multi-phase) oscillator can be configured.

   * A BNC cable is used for connection.


• User-defined unit function

   AThe 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.


Frequency accuracy

± (3 ppm of setting + 2 pHz)

(External frequency reference of 10 MHz  usable.)

Frequency resolution

0.01 µHz

Amplitude accuracy

± (1% of amplitude setting [Vp-p] + 2 mVp-p)/open

Phase setting resolution

0.001° (setting range: –1800.000° to +1800.000°)

Duty setting range

0.0000% to 100.0000%; resolution: 0.0001%

Duty setting range

5.0 ns to 58.8 Ms; 3-digit resolution/0.1 ns

esolution of arbitrary waveform data amplitude

16 bits






 • Instruction Manual (Basic)

 • CD

 • PDF manuals, Arbitrary Waveform Editor

 • Sequence Editor, LabVIEW driver

 • Power cord set


Multi input/output cable (Option)

 • Options

 • Multi input/output cable (the right photo>>)

 • PA-001-1318




• 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.


• USB and GPIB interfaces


• LabVIEW driver included.


• Power supply input for 90 V AC to 250 V AC enables worldwide use.


• Waveform display (TFT color LCD with the QVGA high resolution)


• Flat and light body (88 mm high, approx. 2.1 kg)