281,282,284波形发生器
A selection of universal waveform generators offering superior performance and excellent value
These universal waveform generators combine many generators in one instrument.
Their extensive signal simulation capabilities include arbitrary waveforms
280 280 系列波形发生器的详细资料:
· Choice of 1, 2 and 4 independent or linked channels
· 40 MS/s max. sampling speed
· 16 MHz function generator
· 10 MHz pulse generator
· Pulse train pattern generator
· Arbitrary waveforms of up to 65 k points
· Powerful modulation capabilities
· Built-in trigger generators
· Waveform Manager Plus for Windows® software
· Multiple standard waveforms recalled from internal memory
· RS-232 and GPIB interfaces
Specifications apply at 18-28 ºC after 30 minutes warm-up, at maximum output into 50 ?.
Arbitrary Waveforms |
Waveforms |
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Maximum waveform size is 65,536 points; minimum waveform size is 4 points. Up to 100 user defined waveforms may be stored in the 256 K point nonvolatile RAM. Waveforms can be defined by front panel editing controls or by downloading of waveform data via RS-232 or GPIB. |
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Waveform memory |
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Vertical resolution |
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Sample clock |
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Resolution |
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Accuracy |
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Sequencing |
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Up to 16 waveforms may be linked. Each waveform can have a loop count of up to 32,768. A sequence of waveforms can be looped up to 1,048,575 times or run continuously. |
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Output filter |
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Selectable between 16 MHz Elliptic, 10 MHz Elliptic, 10 MHz Bessel or none |
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Standard Waveforms
All Waveforms |
Accuracy |
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Temp. stability |
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Output level |
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2.5 mV to 10 Vpp into 50 ? |
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Sine, Cosine, Haversine, Havercosine |
Range |
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Resolution |
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Harmonic distortion |
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< 0.1 % THD to 100 kHz; |
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< –65 dBc to 20 kHz, |
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< –50 dBc to 300 kHz, |
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< –35 dBc to 10 MHz |
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< –30 dBc to 16 MHz |
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Nonharmonic spurii |
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< –65 dBc to 1 MHz, |
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< –65 dBc + 6 dB/octave 1 MHz to 16 MHz |
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Square |
Range |
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Resolution |
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Accuracy |
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Rise/fall times |
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Pulse and Pulse Train |
Rise/fall times |
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Period range |
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Period resolution |
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Accuracy |
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Delay range |
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Delay resolution |
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0.002 % of period or 25 ns, whichever is greater |
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Width range |
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Width resolution |
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0.002 % of period or 25 ns, whichever is greater |
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Triangle |
Range |
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Resolution |
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Linearity error |
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Ramps and Sin(x)/x |
Range |
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Resolution |
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Linearity error |
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Note: The pulse width and absolute value of the delay may not exceed the pulse period at any time. Repetition rate is set by the pulse train period.
Operating Modes
Operating Modes |
Continuous |
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Waveform runs continuously |
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Triggered Burst |
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Each active edge of the trigger signal will produce one burst of the waveform |
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Carrier waveforms |
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All standard and arbitrary |
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Max. Carrier Frequency |
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40 Msamples/s for ARB and Sequence. 1 MHz or the maximum for the selected waveform. |
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Number of cycles |
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Trigger repetition |
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0.005 Hz to 100 kHz internal dc to 1 MHz external |
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Trigger signal source |
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Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. |
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Trigger start/stop phase |
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± 360 ° settable with 0.1 ° resolution, subject to waveform frequency and type |
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Gated |
Waveform will run while the Gate signal is true and stop while false |
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Carrier waveforms |
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All standard and arbitrary |
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Max. carrier frequency |
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40 Msamples/s for ARB and Sequence. 1 MHz or the maximum for the selected waveform. |
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Number of cycles |
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Trigger repetition |
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0.005 Hz to 100 kHz internal dc to 1 MHz external |
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Gate signal source |
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Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. |
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Gate start/stop phase |
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± 360 ° settable with 0.1 ° resolution, subject to waveform frequency and type |
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Sweep |
Frequency sweep capability is provided for both standard and arbitrary waveforms. Arbitrary waveforms are expanded or condensed to exactly 4096 points and DDS techniques are used to perform the sweep. |
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Carrier waveforms |
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All standard and arbitrary except pulse, pulse train and sequence |
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Sweep mode |
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Linear or logarithmic, triggered or continuous |
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Sweep direction |
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Up, down, up/down or down/up |
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Sweep range |
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From 1 mHz to 16 MHz in one range. Phase continuous. Independent setting of the start and stop frequency. |
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Sweep time |
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Marker |
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Sweep trigger source |
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The sweep may be free run or triggered from the following sources: Manually from keyboard. Externally from TRIG IN input or remote interface. |
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Sweep hold |
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Sweep can be held and restarted by the HOLD key |
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Multi channel sweep |
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Any number of channels may be swept simultaneously but the sweep parameters will be the same for all channels. Amplitude, Offset and Waveform can be set independently for each channel. |
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Tone Switching |
Capability provided for both standard and arbitrary waveforms. Arbitrary waveforms are expanded or condensed to exactly 4096 points and DDS techniques are used to allow instantaneous frequency switching. |
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Carrier waveforms |
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All except pulse, pulse train and sequence |
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Frequency list |
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Up to 16 frequencies from 1 mHz to 10 MHz |
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Trigger repetition rate |
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0.005 Hz to 100 kHz internal. DC to 1 MHz external. Usable repetition rate and waveform frequency depend on the tone switching mode. |
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Source |
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Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. |
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Tone switching modes |
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Gated |
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The tone is output while the trigger signal is true and stopped, at the end of the current waveform cycle, while the trigger signal is false. The next tone is output when the trigger signal is true again. |
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Triggered |
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The tone is output when the trigger signal goes true and the next tone is output, at the end of the current waveform cycle, when the trigger signal goes true again. |
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FSK |
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The tone is output when the trigger signal goes true and the next tone is output, immediately, when the trigger signal goes true again. Using 2 channels with their outputs summed together it is possible to generate DTMF test signals. |
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Trigger Generator |
Internal source 0.005 Hz to 100 kHz square wave adjustable in 10 us steps. 3-digit resolution. Available for external use from any SYNCOUT socket. |
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Outputs
Main Outputs – One for each channel |
Output impedance |
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Amplitude |
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5 mV to 20 Vpp open circuit (2.5 mV to 10 Vpp into 50 ?). Amplitude can be specified open circuit (hi Z) or into an assumed load of 50 ? or 600 ? Vpkpk, Vrms or dBm. |
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Amplitude accuracy |
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2 % ± 1 mV at 1 kHz into 50 ? |
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Amplitude flatness |
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± 0.2 dB to 200 kHz; ± 1 dB to 10 MHz; ± 2.5 dB to 16 MHz |
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DC offset range |
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± 10 V from 50 ?. Offset plus signal peak limited to ± 10 V |
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DC offset accuracy |
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Typically 3 % ± 10 mV, unattenuated |
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Resolution |
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3 digits or 1 mV for both amplitude and dc offset |
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Sync Out – One for each channel |
Multifunction output user definable or automatically selected to be any of the following: |
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Waveform sync (all waveforms) |
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A square wave with 50 % duty cycle at the main waveform frequency, or a pulse coincident with the first few points of an arbitrary waveform |
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Position markers |
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Any point(s) on the waveform may have associated marker bit(s) set high or low |
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Burst done |
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Produces a pulse coincident with the last cycle of a burst. |
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Sequence sync |
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Produces a pulse coincident with the end of a waveform sequence. |
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Trigger |
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Selects the current trigger signal. Useful for synchronizing burst or gated signals. |
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Sweep sync |
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Outputs a pulse at the start of sweep to synchronize an oscilloscope or recorder. |
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Phase lock out |
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Used to phase lock two generators. Produces a positive edge at the 0 ° phase point. |
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Output signal level |
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TTL/CMOS logic levels from typically 50 ?. |
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Cursor/marker out |
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Adjustable output pulse for use as a marker in sweep mode or as a cursor in arbitrary waveform editing mode. Can be used to modulate the Z axis of an oscilloscope or be displayed on a second ‘scope channel. |
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Output Signal Level: Adjustable from nominally 2 V to 14 V, normal or inverted; adjustable width as a cursor. |
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Output impedance |
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Inputs
Trig In |
Frequency range |
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Signal range |
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Threshold nominally TTL level; maximum input ± 10 V |
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Min. pulse width |
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50 ns, for Trigger/Gate; 50 us for Sweep mode |
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Polarity |
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Selectable as high/rising edge or low/falling edge |
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Input impedance |
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Modulation In |
Frequency range |
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VCA signal range |
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Approximately 1 V pkpk for 100 % level change at maximum output |
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SCM signal range |
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Approximately ± 1 V pk for maximum output |
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Input impedance |
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Sum In |
Frequency range |
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Signal range |
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Approximately 2 V pk-pk input for 20 V pk-pk output |
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Input impedance |
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Hold |
Hold |
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Holds an arbitrary waveform at its current position. A TTL low level or switch closure causes the waveform to stop at the current position and wait until a TTL high level or switch opening which allows the waveform to continue. The front panel MAN HOLD key or remote command may also be used to control the Hold function. While held the front panel MAN TRIG key or remote command may be used to return the waveform to the start. The Hold input may be enabled independently for each channel. |
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Input impedance |
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Ref Clock In/Out |
Set to input |
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Input for an external 10 MHz reference clock. TTL/CMOS threshold level. |
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Set to output |
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Buffered version of the internal 10 MHz clock. Output levels nominally 1 V and 4 V from 50 ? |
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Set to phase lock |
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Used together with SYNC OUT on a master and TRIG IN on a slave to synchronise (phase lock) two separate generators. |
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Inter-Channel Operation
Inter-Channel Operation |
Inter-Channel Modulation |
The waveform from any channel may be used to Amplitude Modulate (AM) or Suppressed Carrier Modulate (SCM) the next channel. Alternatively any number of channels may be Modulated (AM or SCM) with the signal at the MODULATION input socket. |
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Carrier frequency |
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Entire range for selected waveform |
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Carrier waveforms |
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All standard and arbitrary waveforms |
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Modulation types: AM |
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Double sideband with carrier. SCM: Double sideband suppressed carrier |
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Modulation source |
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Internal from the previous channel. External from Modulation input socket. The external modulation signal may be applied to any number of channels simultaneously. |
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Frequency range |
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Internal AM depth |
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Internal AM resolution |
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Carrier suppression (SCM) |
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External modulation signal range |
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VCA: Approximately 1 V pk-pk for 100 % level change at maximum output |
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SCM |
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Approximately ± 1 V pk for max. output |
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Inter-Channel Analogue Summing |
Waveform Summing sums the waveform from any channel into the next channel. Alternatively any number of channels may be summed with the signal at the SUM input socket. |
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Carrier frequency |
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Entire range for selected waveform |
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Carrier waveforms |
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All standard and arbitrary waveforms |
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Sum source |
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Internal from the previous channel. External from SUM IN socket. |
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Frequency range |
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Ext. signal range |
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Approx. 5 V pk-pk input for 20 V pk-pk output |
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Inter-Channel Phase Locking |
Two or more channels may be phase locked together. Each locked channel may be assigned a phase angle relative to the other locked channels. Arbitrary waveforms and waveform sequences may be phase locked but certain constraints apply to waveform lengths and clock frequency ratios. |
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With one channel assigned as the Master and other channels as Slaves a frequency change on the master will be repeated on each slave thus allowing multiphase waveforms at the same frequency to be easily generated. DDS waveforms are those with 7 digits of frequency setting resolution, while Non-DDS waveforms have 4 digits. |
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Phase resolution Non-DDS waveforms |
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DDS waveforms: 0.1 degree or 360 degrees/number of points whichever is the greater |
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Phase error |
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< ± 10 ns all waveforms |
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The signals from the REF IN/OUT socket and the SYNC OUT socket can be used to phase lock two instruments where more than 4 channels are required. |
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Inter-Channel Triggering |
Any channel can be triggered by the previous or next channel. The previous/next connections can be used to ‘daisy chain’ a trigger signal from a ‘start’ channel, through a number of channels in the ‘chain’ to an ‘end’ channel. Each channel receives the trigger out signal from the previous (or next) channel, and drives its selected trigger out to the next (or previous) channel. |
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The ‘end’ channel trigger out can be set up to drive the ‘start’ channel, closing the loop. In this way, complex and versatile interchannel trigger schemes may be set up. Each channel can have its trigger out and its output waveform set up independently. Trigger out may be selected from Waveform End, Position Markers, Sequence Sync or Burst Done. |
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Using the scheme above it is possible to create a sequence of up to 64 waveform segments, each channel producing up to 16 segments and all channels being summed to produce the complete waveform at the output of channel 4. |
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Interfaces |
RS-232 |
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Variable Baud rate, 9600 Baud maximum |
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IEEE-488 |
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Conforms with IEEE488.1 and IEEE488.2 |
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Software included |
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Windows™-based software for waveform creation, editing and management is supplied. Instrument drivers LabView and LabWindows CVI drivers are either supplied with the instrument or are available via your local Fluke office |
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General Specifications |
Display |
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20 character x 4 row alphanumeric LCD |
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Data entry |
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Keyboard selection of mode, waveform etc.; value entry direct by numeric keys or by rotary control |
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Stored settings |
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Up to 9 complete instrument setups may be stored and recalled from battery-backed memory. |
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Up to 100 arbitrary waveforms can also be stored independent of the instrument settings. |
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Size |
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130 mm (3 U) height; 335 mm long; width 350 mm (282/284), 212 mm (281) |
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Weight |
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7.2 kg. (16 lb) (282/284); 4.1 kg (9 lb) (281) |
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Power |
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230 V, 115 V or 100 V nominal 50/60 Hz, adjustable internally; operating range ± 14 % of nominal;100 VA max. for 4 channels, 75 VA max. for 2 channel, 40 VA max. for 1 channel. Installation Category II. |
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Operating range |
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+5 °C to 40 °C, 20-80 % RH |
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Storage range |
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Environmental |
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Indoor use at altitudes to 2000 m, Pollution Degree 2 |
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Options |
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Safety |
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EMC |
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280 系列波形发生器 |
型号名称 |
描述 |
281 |
1 Channel 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software |
282 |
2 Channel, 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software |
284 |
4 Channel, 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software |
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