WF1974 (2-channel, 0.01µHz to 30MHz Multifunction Generator with Sequence Function)

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