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Fluke 281 - 1 Channel 40 MS/s Arbitrary Waveform Generator

Fluke 281 - 1 Channel 40 MS/s Arbitrary Waveform Generator

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1 Channel 40 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software
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, function generator, pulse/pulse train generator, sweep generator, trigger generator, tone generator, and amplitude modulation source.

  • 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

The 281, 282, and 284 Waveform Generators use Direct Digital Synthesis techniques as well as variable clock sampling technology to provide a fully featured programmable function and arbitrary waveform capability. The 281, 282 and 284 are 40 MS/s arbitrary waveforom generators with one, two, and four channels, respectively.

Waveform Manager Plus Software provides all the features needed for creation, manipulation and management of arbitrary waveforms within a single Windows-based program.

Single or multiple channels:
The 28x series comprises a single channel model (281), two channel (282) and 4 channel (284). Each channel can be operated fully independently, or multiple channels can be linked using simple or complex relationships.

Waveforms
Standard waveforms include: sine, square, triangle, dc, positive ramp, negative ramp, sine(x)/x, pulse, pulse train, cosine, haversine and havercosine. Output frequency range is 0.1 mHz to 16 MHz for sine and square and up to 100 kHz for triangle, ramps and sine(x)/x. Rise time for pulse is < 25 ns with a period range of 100 ns to 100 s. Output amplitude range can be adjusted from 2.5 mV to 10 V pk-pk into 50 Ω.

Versatile pulse generator capabilities:
Each channel can generate not just pulses but 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.

Arbitrary capability unmatched at this price:
The 280 series are highly sophisticated 12-bit arbitrary generators capable of recreating virtually any waveform. True variable clock architecture is used with clock speeds between 0.1Hz and 40 MHz. This architecture avoids 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 4 to 65,536 horizontal points. Arbitrary waveforms may be replayed at a specified waveform frequency, period or sample rate. Up to 100 user-defined waveforms can be stored within the instrument’s 256K of nonvolatile memory.

Linked-sequence operation:
Up to sixteen arbitrary waveforms may be linked in a sequence. 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, up to 64 segments can be used to create highly complex waveforms.

Multi-channel phase locking:
Any number of channels can be phase locked with offsets defined to a resolution of 0.1 degree (or 360 degrees/waveform points for arbitrary waveforms). For applications requiring more than four channels, multiple generators can be phase locked. The 280 series also has the facility for phase locking to another generator.

Multi-channel Summing:
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 to be created such as noise superimposition.

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, up to 64 segments can be used (32 segments for 282). A channel can be used to AM modulate or SCM modulate another channel.

Wide frequency sweep range:
All waveforms can be swept over their full frequency range at a rate variable between 30 milliseconds and 15 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 simultaneously.

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 280 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.

Windows based waveform editing:
Each generator is supplied complete with sophisticated Windows based software for the creation, editing and management of waveforms. This powerful software can be used to create arbitrary waveforms from scratch using drawing tools, equations or both together. Real-world waveforms imported from DSOs or other sources can be modified and combined with other waveforms using editing functions. A library of ‘standard’ waveforms is included which can be used as ‘elements’ when creating or modifying waveforms. A powerful Equation Editor provides an array of mathematical functions including logarithmic and geometric operands. Waveform creation and editing can make use of drawing tools in combination with equations, insertion and manipulation. Multiple waveforms can be further combined using mathematical operators to create new waveforms.

Import from DSOs and other instruments:
The Windows software incorporates direct support for uploading waveforms from Tektronix digital oscilloscopes. A driver for LabWindows CVI from National Instruments is available which enables imports from other equipment to be achieved within the LabWindows environment.

Fully programmable:
via RS-232 or GPIB The 280 series incorporates both an RS-232 interface and a GPIB (IEEE-488) interface as standard. These can be used for loading arbitrary waveforms and for remote control of all instrument functions.

Arbitrárne priebehy
Priebehy Max. veľkosť priebehov je 65,536 bodov; min veľkosť priebehov je 4 bodov. Do 100 užívateľmo definované priebehy môžu byť uložené v 256 K point permamentná RAM. Priebehy môžu byť definované ovládacími prvkami na prednom paneli alebo alebo stiahnutím priebehových dát cez RS-232 alebo GPIB. 
Pamäť priebehov 64 k bodov za kanál
Vertikálne rozlíšenie 12 bitov
Sample clock 100 mHz do 40 MHz
Rozlíšenie 4 digít
Presnosť ± 1 digít nastavenia
Sekvencovanie Do 16 priebehy môžu byť prepojené. Každý priebeh môže mať loop count do 32,768. Sekvencia priebehov môže byť looped do 1,048,575 krát aby stále pracoval.
Filter výstupu Možnos%t výberu medzi 16 MHz Elliptic, 10 MHz Elliptic, 10 MHz Bessel alebo ziadny
Všetky priebehy
Presnosť  10 ppm pre 1 rok
Prechodná stabilita  Typicky < 1 ppm/ºC.
Level výstupu  2.5 mV do 10 Vpp do 50 Ω
Sínus, kosínus, haversine, Havercosine
Rozsah  0.1 mHz do 16 MHz
Rozlíšenie  0.1 mHz alebo 7 digít
Harmonické rušenie

< 0.1 % THD do 100 kHz;

< –65 dBc do 20 kHz,

< –50 dBc do 300 kHz,

< –35 dBc do 10 MHz

< –30 dBc do 16 MHz

Neharmonické spurii

< –65 dBc do 1 MHz,

< –65 dBc + 6 dB/octave 1 MHz do 16 MHz

Štvorec
Rozsah  1 mHz do 16 MHz
Rozlíšenie  1 mHz (4 digít)
Presnosť  ± 1 digít nastavenia
Rise/Fall times  < 25 ns
Pulse a Pulse train
Rise/Fall times < 25 ns
Rozsah periódy  100 ns do 100 s
Rozlíšenie periódy  4 digit
Presnosť  ± 1 digít nastavenia
Rozsah oneskorenia  –99.99 s do + 99.99 s
Rozlíšenie oneskorenia  0.002 % períódy alebo 25 ns, ktorá je väčšia
Šírka rozsahu  25 ns do 99.99 s
Rozlíšenie  šírky  0.002 % períódy alebor 25 ns, ktorá je väčšia
Trojuholník 
Rozsah 0.1 mHz do 100 kHz
Rozlíšenie 0.1 mHz (7 digít)
Chyba linearity 0.1 % do 30 kHz

Šírka pulsu a absolútna hodnota oneskorenia môže prekročiť periódu pulsu kedykoľvek. Opakujúca frekvencia je nastavená s pulse train period.

Operačné módy
Kontinuálny Priebehy prebiehajú súvislo
Triggered Burst Každá hrana trigger signal will produce one burst of the waveform
Nosné krivky Všetky štandarty a arbitrárny
Max. Nosná frekvencia 40 M vzoriek pre ARB a Sekvencovanie. 1 MHz alebo maximum maximum pre vybrané priebehy.
Počet cyklov 1 do 1,048,575
Trigger opakovanie 0.005 Hz to 100 kHz internal dc to 1 MHz external
Trigger zdroj signálu Interne s klávesnice, predchádzajúci kanál, ďaľší kanál alebo trigger generator. Vonkajšia forma TRIG IN alebo vzdialené rozhranie.
Trigger start/stop phase ± 360 ° nastavitelný s 0.1 ° rozlíšením, vzhľadom na frekvenciu priebehov a typ
Gated Waveform will run while the Gate signal is true and stop while false
Nosné priebehy Všetky štandarty a arbitrárny
Max. nosná frekvencia 40 M vzorky pre ARB a Sekvencia. 1 MHz alebo maximum vybraného priebehu.
Počet cyklov 1 do 1,048,575
Trigger repetition 0.005 Hz do 100 kHz vnútorný dc do 1 MHz externý
Gate zdroj signálu Interne s klávesnice, predchádzajúci kanál, ďaľší kanál alebo trigger generator. Externá forma TRIG IN alebo vzialeneho rozhrania.
Gate start/stop phase ± 360 ° nastavitelný s 0.1 ° rozlíšením, subjekt pre frekvenciu friebehu a typ
Sweep Frekvenčná sweep schopnos´t je poskytnutá pre aj štandart aj arbitrárne priebehy. Arbitrárne priebehy sú rozšírené alebo kondenzované presne do 4096 bodov a DDS techniky su použite pre vykonávanie sweepu.
Nosné priebehy Všetky štandartné a arbitrárne okrem pulsu, pulse train a sekvencie
Sweep mode Lineárny alebo logaritmický, spustený alebo kontinuálny
Sweep smer Hore, dole, hore/dole alebo dole/hore
Sweep rozsah Od 1 mHz do 16 MHz v jednom rozsahu. Phase continuous. Nezávislé nastavenia začiatočnej alebo ukončovacej frekvencie.
Sweep čas 30 ms do 999 s
Marker Variabilný počas sweepu
Sweep trigger source Sweep môže voľne bežať alebo triggered z nasledujúcich zdrojov: Manuálne s klávesnice. Externe s TRIG IN vstupu alebo vzdialeného rozhrania.
Sweep hold Sweep môže byť držaný a reštartovaný s HOLD key
Multi-kanálový sweep 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.
Prepínanie tónov Schponosť poskytnutá pre štandart aj a arbitrárne priebehy. Arbitrárne priebehy sú axpandovaný alebo kondensovaný presne do 4096 bodov a DDS techniky sú použité aby umožnili okamžitú výmenu frekvencie.
Nosné priebehy Všetky až na puls, pulse train a sekvenciu
Frekvenčný zoznam Do 16 frekvencie od 1 mHz do 10 MHz
Trigger repetition rate 0.005 Hz do 100 kHz interný. DC do 1 MHz externý. Použiteľné opakovacia frekvencie a frekvencia priebehov závisí od módu prepínania tónov.
Zdroj Interne s klávesnice, previous channel, next channel or trigger generator. External from TRIG IN or remote interface.
Tone switching modes  
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 Vnútorný zdroj 0.005 Hz to 100 kHz square wave adjustable in 10 us steps. 3-digit resolution. Available for external use from any SYNCOUT socket.
Hlavné výstupy – Jeden pre každý kanál
Inpedanciua výstupu 50 Ω
Amplituda 5 mV do 20 Vpp otvorený obvod (2.5 mV do 10 Vpp do 50 Ω). Amplituda môže byť špecifikovaný otvorený obvod (hi Z) alebo do predpokladanej záťaže 50 Ω alebo 600 Ω Vpkpk, Vrms alebo dBm.
Presnosť amplitudy 2 % ± 1 mV na 1 kHz into 50 Ω
Plochosť amplitudy ± 0.2 dB do 200 kHz; ± 1 dB do 10 MHz; ± 2.5 dB do 16 MHz
DC offset rozsah ± 10 V od 50 Ω. Offset plus signal peak limitovaný do ± 10 V
DC offset accuracy Typically 3 % ± 10 mV, unattenuated
Rozlíšenie 3 digits or 1 mV for both amplitude and dc offset
Sync Out – Jeden pre každý kanál Multifunction output user definable or automatically selected to be any of the following:
Waveform sync (all waveforms) 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
Značky polohy Akékoľvek body na priebehoch môžu  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.
Phase lock out Used to phase lock two generators. Produces a positive edge at the 0 ° phase point.
Output signal level TTL/CMOS logic levels from typically 50 Ω.
Cursor/marker out

Nastavitelný výstupový puls pre použitie ako marker v sweep móde alebo ako kurzor v arbitrárnom móde editovania priebehov. Môže byť využitý na modulovanie osi Z osciloskopu alebo zobrazený na druhom kanáli osciloskopu.

Level výstupového signálu: Nastasvitelný s nominálnej 2 V do 14 V, nominálny alebo obrátený; nastavitelná šírka s cursorom.

Výstupná impedancia 600 Ω typicky
(Vstupy) Trig In
Rozsah frekvencia DC do 1 MHz
Rozsah signálu Threshold nominally TTL level; max vstup ± 10 V
Min. šírka pulsu 50 ns, pre Trigger/Gate; 50 us pre Sweep mode
Polarita Možnosť vybrať high/rising edge alebo low/falling edge
Samostatnosť vstupu 10 kΩ
Modulation in
Rozsah frekvencie DC do 100 kHz
Rozsah VCA signálu Približne 1 V pkpk pre 100 % level zmena na max výstupe
Rozsah SCM signálu Približne ± 1 V pk pre max výstup
Samostatnosť vstupu Typicky 1 kΩ
Sum in
Frekvenčný rozsah DC do 8 MHz
Rozsah signálu Približne 2 V pk-pk vstup prer 20 V pk-pk výstup
Samostatnosť vstupu Typicky 1 kΩ
Hold
Hold Drží arbitrárne priebehy v danej polohe. A TTL low level alebo switch closure spôsobí zastavenie priebehov v aktuálnej polohe a čakať pokiaľ TTL vysoký level alebo 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.
Samostatnosť vstupu 10 kΩ
Ref Clock In/Out
Set to input Input for an external 10 MHz reference clock. TTL/CMOS threshold level.
Set to output Buffered version of the internal 10 MHz clock. Output levels nominally 1 V and 4 V from 50 Ω
Set to phase lock Used together with SYNC OUT on a master and TRIG IN on a slave to synchronise (phase lock) two separate generators.
Medzikanálové operácie
 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.
 Carrier frequency  Entire range for selected waveform
 Carrier waveforms  All standard and arbitrary waveforms
 Modulation types: AM  Double sideband with carrier. SCM: Double sideband suppressed carrier
 Modulation source  Internal from the previous channel. External from Modulation input socket. The external modulation signal may be applied to any number of channels simultaneously.
 Rozsah frekvencie  DC to > 100 kHz
Internal AM depth 0 % to 105 %.
Internal AM resolution 1 %
Carrier suppression (SCM) 40 dB
External modulation signal range VCA: Approximately 1 V pk-pk for 100 % level change at maximum output
SCM Approximately ± 1 V pk for max. output
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.
Carrier frequency Entire range for selected waveform
Nosné priebehy Všetky štandarty a arbitrárne priebehy
Sum source Internal from the previous channel. External from SUM IN socket.
Frekvenčný rozsah DC do > 8 MHz
Ext. rozah signálu Približne 5 V pk-pk vstup pre 20 V pk-pk výstup
Inter-Channel Fázové uzamkýnanie

2 alebo viac kanálov môžu byť spolu fázovo uzamknuté. Každemu uzamknutému kanálu môže byť pridelený a fázový uhol zodpovedajúci ostatným uzamknutým kanálom. Arbitrárne priebehy a priebehové sekvencie môžu byť fázovo uzamknuté ale určité obmedzenia sa aplikujú na dĺžku priebehov a kmitočet hodinových impulzov.

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.

Fázové rozlíšenie Non-DDS waveforms DDS waveforms: 0.1 degree or 360 degrees/number of points whichever is the greater
Phase error

< ± 10 ns all waveforms

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.

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 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.

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.

Interfaces
RS-232 Variable Baud rate, 9600 Baud maximum
IEEE-488 Conforms with IEEE488.1 and IEEE488.2
Software included 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
Všeobecné špecifikácie
Displej 20 character x 4 row alphanumeric LCD
Data entry Keyboard selection of mode, waveform etc.; value entry direct by numeric keys or by rotary control
Uložené nastavenia

Do 9 complete instrument setups may be stored and recalled from battery-backed memory.

Do 100 arbitrary waveforms can also be stored independent of the instrument settings.

Rozmery 130 mm (3 U) x 335 mm x 350 mm (282/284), 212 mm (281)
Hmotnosť 7.2 kg. (16 lb) (282/284); 4.1 kg (9 lb) (281)
Sila 230 V, 115 V alebo 100 V nominal 50/60 Hz, interne nastaviteľné; operačný rozsah ± 14 % nominálneho;100 VA max. pre 4 kanály, 75 VA max. pre 2 kanály, 40 VA max. pre 1 kanál. Inštalačná kategória II.
Rozsah operačnej teploty +5 °C do 40 °C, 20-80 % RH
Rozsah skladovacej teploty –20 °C do + 60 °C
Prostredie Použitie v uzavretých priestoroch do 2000 m, Stupeň znečistenia 2
Možnosti 19-in skladací stojan
Bezpečnosť EN61010-1
EMC EN61326




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