Ordering Information 291 1 Channel 100 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software. Compact Flash Memory Card and USB Card Reader/Writer 292 2 Channel, 100 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software. Compact Flash Memory Card and USB Card Reader/Writer 4 Channel, 100 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software. Compact Flash Memory Card and USB Card Reader/Writer 1 Channel 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software 2 Channel, 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software 4 Channel, 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software 294 281 282 284 Fluke 280 and 290 Series Single and Multi-Channel Universal ARB Generators Additional included accessories (290 Series) IEC Mains Lead RS-232 Lead Manual Additional included accessories (280 Series) IEC Mains Lead RS-232 Lead Manual Options and accessories 19-inch rack mounting kit for one multi-channel generator 19-inch rack mounting kit for one or two single- channel generators 291 Fluke. Keeping your world up and running.(R) Fluke Corporation PO Box 9090, Everett, WA U.S.A. 98206 Fluke Europe B.V. PO Box 1186, 5602 BD Eindhoven, The Netherlands For more information call: In the U.S.A. (800) 443-5853 or Fax (425) 446-5116 In Europe/M-East/Africa +31 (0) 40 2675 200 or Fax +31 (0) 40 2675 222 In Canada (800)-36-FLUKE or Fax (905) 890-6866 From other countries +1 (425) 446-5500 or Fax +1 (425) 446-5116 Web access: http://www.fluke.com (c)2008 Fluke Corporation. Specifications subject to change without notice. Printed in U.S.A. 1/2008 3105848 B-EN-N Rev A Pub_ID: 11328-eng, rev 01 * One, two or four independent or inter-linked channels * 40 MS/s or 100 MS/s, up to 281 1 M words per channel * Function generator and pulse generator capabilities 294 Universal waveform generators offering superior performance and excellent value The Fluke 280 Series and 290 Series Waveform Generators combine a true variable clock arbitrary waveform generator with a high performance DDS function generator and pulse generator in a single instrument. Wide model range Pulse generator Waveform sequencing The Fluke 280 Series and 290 Series comprise of six models: * 281 40 MS/s single-channel waveform generator in 3U half rack size case. * 282 40 MS/s two-channel waveform generator in 3U case. * 284 40 MS/s four-channel waveform generator in 3U case. * 291 100 MS/s single-channel waveform generator in 3U half rack size case. * 292 100 MS/s two-channel waveform generator in 3U case. * 294 100 MS/s four-channel waveform generator in 3U case. On multi-channel units, each channel can be operated fully independently, or multiple channels can be linked using simple or complex relationships. A true arbitrary generator The 280 and 290 Series are highly sophisticated 12-bit arbitrary waveform generators capable of recreating virtually any waveform. True variable clock architecture is used with clock speeds between 0.1 Hz and 100 MHz (40 MHz on 280 Series units). This architecture avoids 2 Fluke 280 and 290 Series the clock jitter associated with DDS arbitrary generators and permits waveform linking, looping and sequencing. Waveforms may be defined with up to 4096 vertical points and from 8 M to 1 M horizontal points (4 K to 64 K points on 280 Series units). Arbitrary waveforms may be replayed at a specified waveform frequency, period or sample clock rate. An external sample clock can also be used on 290 Series units allowing seamless on the fly changes to output frequency. The 290 series waveform storage is on removable Compact Flash cards, making waveform management easy and effectively unlimited. Features * 1, 2 or 4 waveform channels, independent or linked * 40 MS/s or 100 MS/s 12-bit arbitrary waveform capability using true variable clock architecture * 64 K or 1 M point waveform memory per channel * 16 MHz or 50 MHz function generators using direct digital synthesis (DDS) * Multiple standard waveforms including sine, square, triangle, haversine, ramp, pulse and sin(x)/x * Pulse train pattern generation for up to 10 pulses * Each channel can operate as a full DDS function generator. High quality sine, cosine, haversine, havercosine and square waves are available between 1 mHz and 16 MHz (280 Series) or up to 50 MHz (290 Series). Triangle, ramp and sine(x)/x waveforms are available from 0.1 mHz up to 500 kHz. Complex waveform sequencing and looping capability using up to 1024 waveform segments * Wide range sweep, AM, tone switching, signal summing * Inter-channel triggering, summing and phase control * Multiple generators can be easily phase locked * External ARB clock input (290 Series only) * Waveform creation/editing tools built in; sophisticated external Windows based software included Pulse generator * Each channel can generate not just pulses, but also complex pulse trains. A pattern of up to 10 pulses can be quickly defined, with each pulse having its own amplitude, width and delay. The whole pulse train pattern can then be replayed at a user defined repetition rate. Where variable rise time pulses are required, the full arbitrary function can be used. Built-in trigger generator, gated and triggered burst modes * Tone switching facilitates precision DTMF generation * Unlimited waveform storage using CF memory cards (290 Series only) * GPIB (IEEE-488.2), RS-232 and USB interfaces (280 Series units have GPIB and RS-232 only) Function generator 40 MS/s or 100 MS/s one, two or four channels Waveform creation and editing Waveform creation and editing features are incorporated within the instrument. These include waveform insert, point edit, line draw, amplitude adjust and invert. A wide range of standard waveforms are available for insertion within an arbitrary waveform. Sections of existing arbitrary waveforms can also be inserted. For more sophisticated waveform creation and editing, Waveform Manager Plus software for the Windows(R) operating system is provided. Waveforms created on a PC can be downloaded to the instrument via the digital inter faces (or memory card where fitted). Memory card storage Fluke 290 Series units incorporate a CompactFlash memory card, giving effectively unlimited storage for waveforms and setups. Waveform data can be transferred directly from a PC to the memory card using the USB card reader/writer supplied. GPIB, RS-232, USB The 280 and 290 Series incorporate both RS-232 and GPIB (IEEE-488) interfaces as standard. 290 Series units also have a USB interface. These can be used for loading arbitrary waveforms and for remote control of all the instrument functions. Waveform sequencing The variable clock architecture of the 280 and 290 Series enables waveforms to be sequenced. Up to 1024 arbitrary waveforms may be linked in a sequence (16 waveforms on 280 Series). Each waveform can have a loop count of up to 32,768 and the whole sequence can be run continuously or repeated more than a million times. For multi-channel models, waveforms on different channels can be `daisy chained' and looped. By summing the channel outputs, multiple segments from multiple channels can be used to create highly complex waveforms. Wide range sweep All waveforms can be swept over their full frequency range at a rate variable between milli seconds and minutes. Sweep can be linear or logarithmic, single or continuous. Single sweeps can be triggered from the front panel, the trigger input, or the digital interfaces. Multiple channels can be swept simulta neously. Waveform Manager Plus software Amplitude modulation Amplitude modulation and suppressed carrier modulation are available for all waveforms. Any channel can be used to modulate another channel. Alternatively, all channels can be modulated simultaneously via the modulation input. Built-in trigger generator All waveforms are available as a triggered burst whereby each trigger edge will produce one burst of the carrier. Start and stop phase is fully variable. Both triggered and gated modes can be operated from the internal trigger generator, from an adjacent channel, an external source or a key press or remote command. The trigger generator signal is available as a separate output if required. Tone switching The Fluke 280 and 290 Series can provide triggered switching between up to 16 frequencies of standard or arbitrary waveforms. Tone switching modes can be gated, triggered or FSK using any trigger source. By summing two channels together, it is possible to generate precise DTMF test signals. Fast and easy to use All of the main information is clearly displayed on a backlit 80 character LCD. Eight soft keys enable fast data editing. Parameters can be entered directly from the numeric keypad or changed with the spin wheel. On the 2 and 4 channel models, a Copy Channel key enables similar setups to be created across multiple channels with ease. 4 Fluke 280 and 290 Series Advanced waveform creation, editing and management software included with all 280 and 290 Series generators Multi-channel phase locking Any number of channels can be phase locked with offsets defined to a resolution of 0.1 (or 360/waveform points for arbitrary waveforms). For applications requiring more than four channels, multiple genera tors can be phase locked. 290 Series models can be phase locked to an external clock and offer phase continuous frequency changes. All models, including the 281 and 291, have the facility for phase synchonising to another similar generator. Multi-channel summing * Amplitude modulation * * * * Tone switching Waveform summing sums the waveform from any channel into the next channel. Alternatively any number of channels can be summed with an external signal. This permits complex modulations, such as noise superimposition, to be created. Inter-channel triggering and modulation Because any channel can be triggered by the previous or next channel, waveforms on different channels can be "daisy chained" and looped. By summing the channel outputs, many segments from different channels can be used to generate the final waveform. A channel can be used to AM modulate or SCM modulate another channel. * * * Full waveform building tools including standard waveforms, mathematical expressions, and freehand drawing Full waveform building tools including standard waveforms, mathematical expressions, and freehand drawing Operates under Windows 95, 98, Millennium, NT, 2000 and XP Supports vertical resolutions up to 16 bits (65536 points) Supports horizontal resolutions to over one million points Provides waveform import and export via clipboard functions Directly supports waveform upload from some Tektronix DSOs Supports download and upload via RS-232, GPIB and USB Waveform building tools Toolkit Multi-channel phase locking Multi-channel summing Digital modulation Inter-channel modulation and summing allows the simulation of various telecom digital modulation systems. Digital modulation Waveforms can be built in any number of sections using any combination of the following: standard waveforms, mathematical expressions, drawn waveforms, uploaded waveforms, imported waveforms (using clipboard), existing stored waveforms. Waveform section limits can be defined via moveable cursors, which can be dragged or positioned numerically. Standard waveforms The following waveforms are available directly from the Waveforms dialogue box: Sine, square, triangle, pulse, ramp, sinc [sin(x)/x], gaussian, exponent, noise. The mathematical expression for any standard waveform can be examined by opening the expression editor window. Expression editor functions The following mathematical operators are available within the expression editor: add, subtract, multiply, divide, xn, sin, cos, arcsin, arccos, abs, log10, loge, en, square root, floor, ceiling, random, pulse, in conjunction with constants and waveforms. The expressions used for each section of a waveform are retained and can be displayed in a drop-down window. Expression libraries The mathematical expressions used for waveform creation can be stored in libraries. A default library is created for each project that includes a number of useful examples, including waveshapes and modulations. Waveform drawing functions Waveforms can be created or edited using freehand drawing and/or point-to-point line drawing. Smoothing Waveforms can be smoothed using a running average filter. Start and end points can be specified as well as the number of points to average. Single and Multi-Channel Universal ARB Generators 5 Technical specifications Waveform editing/conversion Toolkit All of the waveform building tools previously mentioned can be used to edit existing waveforms. In addition, waveforms can be manipulated directly using the following functions: Resize waveform Allows a waveform to be resized horizontally to any length between 4 K to 64 K for 280 and 8 M to1 M for 290. Note: The vertical resolution of a waveform is automatically adjusted when it is downloaded to the generator. Thus an 8-bit waveform from a DSO will be expanded to 12 bits if it is downloaded to a 12-bit generator (and vice versa) Waveform mathematics The Waveforms Maths function allows waveforms to be combined and manipulated independently of the expression editor. Waveforms can be scaled, offset, added, subtracted or multiplied using dialogue boxes. Waveforms can also be combined and manipulated within the expression editor, giving access to the full range of mathematical functions. Input/output functions File formats Waveforms can be read from and saved as any of the following formats: WFM (binary), NRM (normalised data in ASCII), WAV (WaveCAD), ASC (WaveCAD), DSF (Tektronix DSO). Waveform download/upload Waveforms can be downloaded/uploaded to/from Fluke arbitrary generators (or certain Tektronix DSOs) using either an RS-232 or GPIB (IEEE-488) interface or, for the 290 Series, a USB interface. Clipboard functions Waveforms can be imported to the program and exported from the program 6 Fluke 280 and 290 Series using the Windows(R) Clipboard. Waveform import uses the "Text" clipboard format (i.e. numeric lists). This enables waveforms to be imported from spreadsheets such as Excel(R) software and from mathematical programs such as MathCad. Values are automatically normalised and re-scaled. Waveform export creates multiple clipboard formats of Text (normalised numeric values between 1), Bitmap (as per on-screen display) and Picture (metafile retaining waveform vector properties). Pictures or bitmaps can be pasted into programs such as Word for documentation purposes. Display area and printing Multiple waveform windows can be open simultaneously. Each window is fully scaleable. Variable zoom is provided with panning from a "navigator" sub-window. Waveform section limits can be defined via moveable cursors that can be dragged or positioned numerically. Waveforms can be printed with automatic annotation and scaling. Management and utilities Projects To maintain good housekeeping, waveforms can be organized into "projects" with separate directory structures. Each project maintains its own library of expressions. Waveforms and expressions can be imported and exported from other projects. Instrument setup The instrument setup screen enables options for the waveform generator to be set from the program. Examples of settable options are output amplitude, clock frequency and trigger source. Variable-clock ARB architecture Direct replay for jitter-free waveforms All Fluke 280 and 290 Series units generate arbitrary waveforms using a variable clock architecture rather than DDS. This ensures that every point in the waveform is replayed exactly as it was defined, the rate of replay being set by the clock frequency. By contrast, a DDS arbitrary generator uses a fixed clock frequency and varies the replay rate by duplicating or omitting waveform points. Unless there is an integer relationship between the desired replay rate, clock frequency and waveform length, each "cycle" of the waveform will differ from the previous one, resulting in jitter. Sequencing for increased waveform length Variable clock architecture also allows sequencing and looping. The 64K words of waveform memory per channel provided in Fluke 280 Series units can be used to create arbitrary waveforms with many more than 65536 points. Many real-world waveforms include repetitive elements. By using a seg ment of the memory to recreate each repeating element, the waveform can be constructed by a "sequence" in which the individual elements are replayed in a defined order and with a defined number of repetitions (loop count). In this way waveforms can be created with a much greater number of points than the waveform memory size. DDS arbitrary generators cannot do this and the effective waveform length is limited to the actual waveform memory size. Fluke 290 Series: the next step forward The design of the new Fluke 290 Series generators is based upon extensive experience of actual user requirements. So in addition to raising the maximum clock speed from 40 MHz to 100 MHz, a number of other important features have been added that meet the needs of particular groups of customers. 1 M word waveform memory Some users require very long arbitrary waveforms. 290 Series units incorporate 1,048,576 words of waveform memory per channel. Thus, even long and complex waveforms that have no repetitive elements can be accommodated. Compact Flash memory card storage provides effectively unlimited storage for waveforms. Greater sequencing capability (up to 1024 segments) gives even more flexibility in waveform reconstruction. External ARB clock input Some applications require that the arbitrary waveform is clocked in direct synchronism with an external signal. Fluke 290 Series units incorporate an external ARB clock input that can be used to clock any number of channels at any rate from dc up to 50 MHz. It should be noted that DDS arbitrary generators have no such capability. Help Full on-screen Help is available with a hyperlinked contents table. Single and Multi-Channel Universal ARB Generators 7 System clock architecture Arbitrary waveforms Standard waveforms All Fluke 290 Series units incorporate a separate clock generator for each channel, allowing completely independent operation. On the Fluke 282 and Fluke 284, channel synchronization is achieved by defining one channel as the master channel and driving the other channel(s) from its clock. The Fluke 292 and 294 provide a further option by incorporating an additional independent system clock generator. The system clock creates an internal version of the external ARB clock signal and can generate frequencies between 0.1 Hz and 50 MHz. When the system clock (or external ARB clock) is used to drive multiple channels, phase skew is significantly reduced and frequency changes can be made without any discontinuities. The system clock output is also available on the rear panel to drive external circuitry or the external ARB input of another generator when more than four channels are required. Waveform parameters Sine, square, triangle, dc, positive ramp, negative ramp, sin(x)/x, pulse, pulse train, cosine, haversine and havercosine. Auxiliary sinewave output The output of the master clock generator is also available as a fixed level sinewave. When not being used as the master for channel synchronization, this can be used as another independent variable frequency generator over the range 0.1 Hz to 50 MHz, providing the equivalent of three or five channel outputs. Specifications apply between 18 C to 28 C after 30 minutes warm up, at maximum output into 50 . 8 Fluke 280 and 290 Series 280 Series 290 Series 64k points/ch 1M points/ch 4 to 65,536 points 8 to 1,048,576 points 12 bits (4096 levels) 0.1 Hz to 40 MHz 0.1 Hz to 100 MHz (1) 4 digits 8 digits < 10 ppm for 1 year ( 1 digit of setting) Typically < 1 ppm/ C 256K Words CF Memory Cards Non-volatile RAM (32 MB to 1 GB size) Max. waveforms 100 500 per card Note 1: 290 Series generators can also use an external sample clock, dc to 50 MHz. Waveform memory Waveform length Vertical resolution Sample clock rate Clock resolution Clock accuracy Clock temp. stability Waveform storage Waveform creation and editing All waveforms 280 Series Frequency accuracy Temp. stability Output level External Basic arbitrary waveform creation and editing tools are built into the instrument. Arbitrary waveforms can be built-up using insertion of standard waveforms between points, point by point value setting, and straight line drawing between points. All Fluke 280 and 290 series units are supplied with Waveform Manager Plus software for Windows which provides full waveform creation, editing and management. Waveforms are transferred using the digital interfaces or memory card. Sequence A number of waveforms can be linked and played as a sequence. 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. Max. waveforms in a sequence 280 Series 290 Series 16 1024 Output filter The output filter type is selectable. This can be used to optimize a particular waveshape. Filter choice 280 Series 290 Series 16 MHz elliptic, 10 MHz elliptic, 10 MHz Bessel or none 40 MHz elliptic, 20 MHz Bessel or none < 10 ppm for 1 year Typically < 1 ppm/ C 2.5 mV to 10 V pp into 50 (5 mV to 20 V pp e.m.f.) Sine, cosine, haversine, havercosine Frequency range Freq. resolution Harmonic distortion All Models Internal Triangle Nonharmonic spurii 280 Series 0.1 mHz to 16 MHz 0.1 mHz or 7 digits < 0.1 % THD to 100 kHz; < -65dBc to 20 kHz, < -50dBc to 300 kHz, < -35dBc to 10 MHz < -30 dBc to 16 MHz < -65 dBc to 1 MHz, < -65 dBc + 6 dB/octave 1 MHz to 16 MHz 290 Series 0.1 mHz to 40 MHz 0.1 mHz or 10 digits < 0.15 % THD to 100 kHz; < -60 dBc to 20 kHz, < -50 dBc to 1 MHz, < -40 dBc to 10 MHz, < -30 dBc to 40 MHz < -60 dBc to 1 MHz, < -60 dBc + 6 dB/octave 1 MHz to 40 MHz Frequency range Frequency resolution Linearity error 280 Series 290 Series 0.1 mHz to 100 kHz 0.1 mHz to 500 kHz 0.1 mHz or 7 digits 0.1 mHz or 10 digits < 0.1 % to 30 kHz Ramps and sin(x)/x Frequency range Frequency resolution Linearity error 280 Series 290 Series 0.1 mHz to 100 kHz 0.1 mHz to 500 kHz 0.1 mHz or 7 digits 0.1 mHz or 10 digits < 0.1 % to 30 kHz Noise function (290 Series only) Digital noise generated by a 35-bit linear feedback register clocked at 100 MHz. User's external filter defines bandwidth and response. Square 280 Series 290 Series Frequency range 1 mHz to 16 MHz 1 mHz to 50 MHz Freq. resolution 1 mHz or 4 digits 1 mHz or 8 digits Freq. accuracy 1 digit of setting Rise and fall times < 25ns < 8ns Pulse and pulse train Period range Period resolution Period accuracy Delay range Delay resolution Width range Width resolution Rise and fall times 280 Series 290 Series 100 ns to 100 s 4 digits 1 digit of setting -99.99s to + 99.99s 0.002 % of period (25 ns minimum) 25 ns to + 99.99 s 0*002 % of period (25 ns minimum) 40 ns to 100 s 8 digits 0.001 % of period (10 ns minimum) 10 ns to + 99.99 s 0.001 % of period (10 ns minimum) < 25 ns < 8 ns Note that the pulse width and absolute value of the delay may not exceed the pulse period at any time. Pulse trains of up to 10 pulses may be specified, each pulse having independently defined width, delay and level. The baseline voltage is separately defined and the sequence repetition rate is set by the pulse train period. Single and Multi-Channel Universal ARB Generators 9 Tone switching modes: Operating modes Continuous Waveform runs continuously. Triggered burst Each active edge of the trigger signal will produce one burst of the waveform. Carrier waveforms Max. carrier frequency Number of cycles Trigger repetition Trigger signal Source Trigger start/stop phase 280 Series 290 Series All standard and arbitrary waveforms 1 MHz or the maxi2.5 MHz or the maxi mum for the selected mum for the selected waveform if lower. 40 waveform if lower. 100 Msamples/s for ARB and Msamples/s for ARB and Sequence. Sequence. 1 to 1,048,575 0.005 Hz to 100 kHz internal, dc to 1 MHz external. Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. 360 settable with 0.1 resolution, subject to waveform frequency and type. Gated Waveform will run while the Gate signal is true and stop while false. Carrier waveforms Max. carrier frequency Number of cycles Trigger repetition Gate signal source Gate start/stop phase 280 Series 290 Series All standard and arbitrary waveforms 1 MHz or the maximum 2.5 MHz or the maxi for the selected waveform mum for the selected if lower. 40 Msamples/s waveform if lower. 100 for ARB and Sequence Msamples/s for ARB and Sequence 1 to 1,048,575 0.005 Hz to 100 kHz internal, dc to 1 MHz external Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. 360 settable with 0.1 resolution, subject to waveform frequency and type 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. Carrier waveforms Sweep mode Sweep direction Sweep range Sweep time Marker Sweep trigger source Sweep hold 280 Series 290 Series All standard and arbitrary except pulse, pulse train and sequence Linear or logarithmic, triggered or continuous Up, down, up/down or down/up. From 1 mHz to 16 MHz in From 1 mHz to 40 MHz in one range one range 30 ms to 999 s 1 ms to 999 s Variable during sweep The sweep may be free run or triggered from the following: Manually from keyboard. Externally from TRIG IN input or remote interface Sweep can be held / restarted by the HOLD key Gated: 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. Triggered: 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. FSK: 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. 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 SYNC OUT socket. Multi channel sweep (multi-channel units only) Any number of channels may be swept simultaneously. Amplitude, Offset and Waveform can be set independently for each channel. For Fluke 280 units the sweep parameters will be the same for all channels. For Fluke 290 units the sweep parameters can be set independently for each channel. 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. Carrier waveforms Frequency list Trigger repetition rate Trigger source Tone switching modes 280 Series 290 Series All except pulse, pulse train and sequence Up to 16 Up to 16 frequencies frequencies from from 1mHz to 40 MHz 1 mHz to 10 MHz 0.005 Hz to 100 kHz internal. dc to 1MHz external. Usable repetition rate and waveform frequency depend on the tone switching mode. Internal from keyboard, previous channel, next channel or trigger generator. External from TRIG IN or remote interface. Gated, Triggered or FSK (see box top right) Outputs Main output--One for each channel Output impedance Amplitude range Amplitude accuracy Amplitude flatness DC offset range DC offset accuracy Resolution 280 Series 290 Series 50 5 mV to 20 V pp open circuit (2.5 mV to 10 V pp into 50 ). Amplitude can be specified open circuit (hi Z) or into an assumed load of 50 or 600 in Vpk-pk, Vrms or dBm. 2 % 1 mV at 1 kHz into 50 0.2 dB to 200 kHz; 0.2 dB to 1 MHz; 1dB to 10 MHz; 0.4 dB to 40 MHz 2.5 dB to 16 MHz 10 V from 50 . Offset plus signal peak limited to 10 V. Typically 3 % 10 mV, unattenuated 3 digits or 1 mV for both Amplitude and DC Offset Auxiliary sine output 280 Series n/a 290 Series n/a 292/294 Nominal 1V p-p sinewave, frequency set by system clock, frequency 0.1 Hz to 50 MHz Sync out--One for each channel Multifunction output user definable or automatically selected to be any of the following: Position markers: (Arbitrary only) 280 Series 290 Series Square wave with 50 % duty cycle at the main waveform frequency, or pulse coincident with the first few points of an arbitrary waveform Any point(s) on the waveform may have associated marker bit(s) set high or low Burst done Produces a pulse coincident with the last cycle of a burst Sequence sync Produces a pulse coincident with the end of a waveform sequence Trigger Selects the current trigger signal. Useful for synchronizing burst or gated signals. Sweep sync Outputs a pulse at the start of sweep to synchronize an oscilloscope or recorder Sweep marker N/A Phase lock out Used to phase lock two generators. Produces a positive edge at the 0 phase point. Waveform sync: (all waveforms) Signal level Signal level: (sweep sync. only) Logic levels of < 0.8 V and > 3 V for all outputs N/A Additional pulse for use as sweep marker Logic levels of < 0.8 V and > 3 V for all outputs except Sweep Sync 3 level waveform - as above but plus narrow +1 V pulse at marker Single and Multi-Channel Universal ARB Generators 11 Inputs Trig in 280 Series 290 Series Frequency range Signal range DC to 1 MHz Threshold nominally TTL level; maximum input 10 V Threshold adjustable over 5 V range; maximum input 10 V Min. pulse width Polarity 50 ns, for Trigger/Gate; 50 us for Sweep mode Selectable as high/rising edge or low/falling edge Input impedance Typically 10 k Modulation in 280 Series 290 Series Frequency range DC to 100 kHz DC to 100 kHz VCA signal range Approximately 1 V pk-pk for 100 % level change at maximum output Approximately 1 V pk for maximum output. Typically 1 k SCM signal range Input impedance Sum in 280 Series 291 292/294 DC to 8 MHz DC to 30 MHz DC to 16 MHz Approximately 2 V pk-pk input for 20 V pk-pk output Frequency range Signal range Input impedance Typically 1 k Ref clock in/out 280 Series Set to input Set to output Set to phase lock 290 Series Input for an external 10MHz reference clock. TTL/CMOS threshold level Buffered version of the internal 10 MHz clock. Output levels nominally 1 V and 4 V from 50 Used together with SYNC OUT on a master and TRIG IN on a slave to synchronize (phase lock) two separate generators Hold ARB clock out Inter-channel modulation 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. Input impedance is10k. See ARB clock In/Out within INPUTS section. 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. Channel relationships The 292/294 units incorporate an additional frequency generator, which can be used as a clock source for multi-channel arbitrary waveforms and as an auxiliary output. The channels of a multi-channel unit can be operated entirely independently, as if they were separate generators. The "copy" key allows the settings of any channel to be instantly copied to another when required. Alternatively, inter-channel relationships of modulation, summing, triggering, or phase locking can be set up. Multi channel sweep Any number of channels may be swept simultaneously. Amplitude, ARB clock in/out Offset and Waveform can be set 290 Series generators can use an external signal as the arbitrary independently for each channel. waveform clock. The 292 and 294 also include an internal system For 280 Series units, the sweep clock generator (in addition to the individual channel clock genera- parameters will be the same tors). The output of this system clock can be made available to drive for all channels. For 290 Series external circuitry or the input of another generator. units,the sweep parameters can be set independently for each 280 Series 291 292/294 channel. Set to input N/A Input for an external Arb clock. Set to output N/A TTL/CMOS threshold level. N/A Outputs System Clock, logic level < 0.8 V to > 3 V Frequency range Max. input voltage N/A N/A DC to 50 MHz. +5 V, -1 V 12 Fluke 280 and 290 Series Cursor/marker out (280 Series units only) 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. Signal level: Output impedance: 280 Series Adjustable from nominally 2 V to 14 V, normal or inverted; adjustable width as a cursor 600 typical 290 Series N/A Modulation source N/A System clock (292/294 only) Frequency range Frequency resolution 280 Series N/A N/A 282/284/292/294 Carrier frequency Carrier waveforms Modulation types 291 292/294 N/A DC to 50 MHz N/A 0.1 Hz The output of the system clock is available as a 1 volt pk-pk sinewave at the Auxiliary Sine Out socket, and as a logic level squarewave at the Ext. ARB In/Out socket. When not being used as a clock source for multi-channel arbitrary waveforms, the system clock provides an independent fixed amplitude sine or square output which is additional to the two or four main channel outputs. Frequency range Internal AM depth Internal AM resolution Carrier suppression (SCM) External modulation signal range Entire range for selected waveform All standard and arbitrary waveforms AM: Double sideband with carrier. SCM: Double sideband suppressed carrier. Internal from the previous channel. External from Modulation input socket. The external modulation signal may be applied to any number of channels simultaneously. DC to > 100 kHz 0 % to 105 %. 1% > 40 dB VCA: Approximately 1V pk-pk for 100 % level change at maximum output. SCM: Approximately 1 V pk for max. output. Inter-channel analog 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. 282/284 292/294 Carrier frequency Entire range for selected waveform Carrier waveforms Sum source All standard and arbitrary waveforms Internal from the previous channel. External from SUM IN socket DC to > 8 MHz. DC to > 16 MHz. Approx. 5 V pk-pk input Approx. 2 V pk-pk input for 20 V pk-pk output for 20 V pk-pk output Typically 1 k Frequency range External signal range Input impedance Single and Multi-Channel Universal ARB Generators 13 Multi-channel operation 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. 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. 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. Different condition apply to Standard waveforms generated using DDS techniques (sine, cosine, haversine, havercosine, triangle, ramps and sinex/x), and those generated using variable clock arbitrary waveform techniques which include square, pulse and pulse train. Arbitrary waveforms and waveform sequences may be phase locked to the Master channel, but certain constraints apply to waveform lengths and clock frequency ratios. 292/294 arbitrary waveforms and waveform sequences can alternatively be clocked from a separate internal clock generator (System clock), or from an external clock input (external ARB clock). When using these clock sources, the restrictions that apply when using the Master channel as the clock source are eliminated. In addition, frequency changes require no settling time to re-establish phase locking, and thus phase continuous frequency changing or sweeping is possible. 14 Fluke 280 and 290 Series 282/284 Phase resolution: (DDS waveforms) Phase resolution: (Non DDS waveforms) Clock source 0.1 degree Phase error < 10 ns 292/294 280 Series 0.1 degree or 360 degrees/number of points Master channel General Master Channel, System Clock or Ext. ARB clock < 5 ns (internal clock) < +/-2 ns (external ARB or system clock) N.B. DDS waveforms are Sine, Cosine, Haversine, Havercosine, Triangle, Ramps and Sin(x)/x. Non DDS waveforms are Pulse, Pulse Train, and all Arbitrary waveforms. Display Data Entry Memory Card Waveform Storage: (non volatile) Stored Settings 290 Series 20 character x 4 row alphanumeric LCD Keyboard selection of mode, wave etc., value entry direct by numeric keys or by rotary control N/A Removable card slot conforming to the Compact Flash standard. Sizes 32 MB to 1 GB. Up to 100 waveforms within 256 K words Up to 500 waveforms per CF card Up to 9 full setups Up to 500 full setups per CF card Mechanical, power, compliance 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. The `end' channel trigger out can be set up to drive the `start' channel, closing the loop. In this way, complex and versatile inter-channel 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. Interfaces 281 291 282 292 284 294 Width 212 mm (1/2 rack) 350 mm Height 130 mm (3 U) 130 mm (3 U) Length 335 mm 335 mm Weight 4.1 kg 4.2 kg 7.1 kg 5.9 kg 7.2 kg 6.0 kg Power A B A C A C A = 230 V, 115 V or 100 V 14 %, 50/60 Hz, adjustable internally B = 230 V, 115 V or 100 V 14 %, 50/60/400 Hz, adjustable internally C =100 V to 230 V 14 %, 50/60/400 Hz, universal input Maximum VA 40 60 75 150 100 150 Temperature Operating Range +5 C to 40 C, 20-80 % RH Storage Range -20 C to +60 C. Environmental Indoor use at altitudes to 2000 m, Pollution Degree 2 Safety Complies with EN61010-1 EMC Complies with EN61326 Full remote control and waveform transfer is available through the digital interfaces. 280 Series IEEE488 RS232 USB 290 Series Conforms with IEEE488.1 and IEEE488.2 Variable baud rate, 9600 Variable baud rate, 38400 baud maximum baud maximum N/A Conforms with USB1.1 Single and Multi-Channel Universal ARB Generators 15 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Fluke: 2423164 FLUKE-284 FLUKE-281