A wide range of standard waveforms are provided and an arbitrary waveform capability enables it to be used to generate unconventional and user defined waveforms. A wide range of modulation capabilities make it a highly versatile signal source.
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10 MHz DDS High stability function generator
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Arbitrary capability which stores five user defined waveforms
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Multiple complex and standard waveforms from internal memory recall
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Extensive modulation capabilities include Gating, sweep, Trigger/Burst, AM, Hop and FSK
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RS-232 and GPIB interfaces
Standard Waveforms
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Sine
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Square
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Positive pulse
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Negative pulse
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Triangle
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Ramp up and ramp down
Arbitrary Waveforms
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Multi level square waves
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Waveform hopping
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Pseudorandom noise
DDS for stability and accuracy
Direct digital synthesis is a digital waveform generating technique which uses a phase accumulator, DAC, and a look up table. The stability and accuracy of the waveforms is related to that of the crystal master clock. The DDS generator delivers not only stability and exceptional accuracy but also low phase noise, high spectral purity, and excellent frequency agility.
A wide range of waveforms
High quality square, sine, and pulse waveforms over the entire frequency range of 0.1 mHz to 10 MHz.
Variable symmetry and duty cycle available for all waveforms.
Maximum of five arbitrary waveforms of 1024 10 bit words can be stored in non volatile memory.
Waveform clock is 27.48 MHz maximum.
Complex waveforms pre defined in ROM including sine x/x, exponential rise and fall, and decaying sine wave.
Locked generators
The signals from the Sync Out and the Clock In/Out socket can be used to phase lock two or more generators. Utilizing this feature you can generate locked or multi phase waveforms of different frequencies.
Powerful modulation modes
All waveforms can be swept over their entire frequency range at a rate variable between 15 minutes and 10 milliseconds. The sweep is fully phase continuous. Sweep can be logarithmic or linear, continuous or single. Single sweeps can be triggered from the trigger input, the front panel, or the digital interfaces.
Two sweep markers are provided, which are adjustable while the sweep is operating. The markers provide a visual indication of frequency points on a chart recorder or an oscilloscope.
Amplitude modulation for all waveforms is variable in 1 percent steps, up to 100 percent.
FSK
Frequency shift keying provides phase coherent switching between two selected frequencies at a rate defined by the switching signal source. The rate can be set from dc to 50 kHz internally, or dc to 1 MHz externally.
Trigger/Burst
All waveforms are available as a triggered burst, whereby each positive edge of the trigger signal will produce one burst of the carrier, starting and stopping at the phase angle specified by the start stop phase setting. The number of cycles in the burst can be set between 0.5 and 1023.
Gated
The gated mode turns the output signal on when the gating signal is high and off when it is low. Both triggered and gated modes can be operated from the internal trigger generator (0.005 Hz to 50 kHz) or from an external source (dc to 1 MHz).
Waveform hop
The generator can be set up to ‘hop’ between a number of different waveform setups, either at a pre determined rate or in response to a manual or bus trigger. Up to 16 different hop waveforms can be defined in terms of amplitude, frequency, function, duration and offset, which is variable in 1 ms steps up to 60 seconds.
The Fluke 271 can also be set to simulate wide band random noise with adjustable amplitude and offset.
