srs DS340-15 MHz 波形和函數(shù)發(fā)生器

主要指標(biāo)與說明The DS340 is a 15 MHz function and arbitrary waveform generator based on Direct Digital Synthesis (DDS). A combination of features, performance and low cost make the DS340 ideal for a variety of test and measurement applications.

DS340 Function/ARB Generator1 μHz to 15.1 MHz frequency range1 μHz frequency resolutionSine, square, ramp, triangle & noisePhase continuous sweeps16,300 point arbitrary waveformsFSK modulationRS-232 and GPIBDS340 Function/ARB GeneratorThe DS340 is a 15 MHz function and arbitrary waveform generator based on Direct Digital Synthesis (DDS). A combination of features, performance and low cost make the DS340 ideal for a variety of test and measurement applications.Sine waves and square waves can be generated at frequencies up to 15.1 MHz, and ramps and triangles up to 100 kHz. Frequency resolution is 1 μHz for all functions. The DS340 also includes a 10 MHz Gaussian white-noise generator.All functions can be swept logarithmically or linearly in a phase-continuous fashion over the entire frequency range of the instrument. A rear-panel SWEEP output provides a trigger signal at the start of a sweep to allow synchronization of external devices. Both unidirectional and bidirectional sweeps can be selected.Up to 16,300 arbitrary waveform points can be downloaded to the DS340's waveform memory via the optional GPIB or RS-232 interfaces. PC software is provided for for composing, editing and downloading arbitrary waveforms. The waveform memory can be played back at rates up to 40 Msamples/s.Both internal and external FSK modes allow the output frequency to be rapidly toggled between two preset values. FSK toggling can be done internally (at rates up to 50 kHz), or externally via a rear-panel input.DS340 Function/ARB GeneratorFrequency Range Max. Frequency ResolutionSine 15.1 MHz 1 μHzSquare 15.1 MHz 1 μHzRamp 100 kHz 1 μHzTriangle 100 kHz 1 μHzNoise 10 MHz (Gaussian weighting)Arbitrary 10 MHz 40 MHz/N (sample rate)OutputSource impedance 50 ΩGrounding Output may float up to ±40 V (AC + DC)

AmplitudeRange 50 mVpp to 10 Vpp into 50 Ω, 100 mVpp to 20 Vpp into High-ZResolution 3 digits (DC offset = 0 V)Offset ±5 VDC (50 Ω), ±10 VDC High-Z)Offset resolution 3 digitsAccuracy 0.1 dB (sine output)Sine WaveSpurious response <-65 dBc to 1 MHz, increases by 6 dB/oct above 1 MHzHarmonic distortion DC to 20 kHz <-70 dBc 20 kHz to 100 kHz <-60 dBc 100 kHz to 1 MHz <-50 dBc 1 MHz to 15 MHz <-40 dBcPhase noise <-55 dBc (30 kHz band centered on carrier)Square WaveRise/fall time<15 ns ± 5 ns (10 % to 90 %)Asymmetry <3 ns + 1 % of periodOvershoot <2 % of amplitude (full output)Ramps and TrianglesRise/fall time 45 ns (10 MHz Bessel filter)Linearity ±0.1 % of full scaleSettling time 200 ns (0.5 % of final value)Arbitrary WaveformsSample rate 40 MHz or integer sub-multiplesWaveform length 8 to 16,300 pointsVertical resolution 12 bitsRise/fall time 45 ns (10 MHz Bessel filter)FSK ModulationModes Internal, ExternalMax. rate 50 kHz, internalExternal FSK TTL input, 1 MHz (max.)SweepsType Linear and logarithmic (phase continuous)Span Linear (full frequency range), log (6 decades)Sweep rate 0.01 Hz to 1 kHzTimebase AccuracyStandard ±5 ppm (20 °C to 30 °C)Optional TCXO, 2 ppm stability, 2 ppm aging (20 °C to 50 °C)GeneralInterfaces Optional RS-232 and GPIB with DOS based arbitrary waveform software (AWC). All instrument functions can be controlled over interfaces.Non-volatile memory up to 9 sets of instruments settings can be stored and recalledDimensions 8.5" × 3.5" × 13" (WHL)Weight 8 lbs.Power 35 W, 100/120/220/240 VAC, 50/60 HzWarranty One year parts and labor on defects in materials and workmanship

srs DS340-15 MHz 波形和函數(shù)發(fā)生器

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