291 1 Channel 100 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software. Fluke 280 and 290 Series Single and
Compact Flash Memory Card and USB Card Reader/Writer Multi-Channel Universal ARB Generators
292 2 Channel, 100 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software.
Compact Flash Memory Card and USB Card Reader/Writer
294 4 Channel, 100 MS/s Arbitrary Waveform Generator and Waveform Manager Plus Software.
Compact Flash Memory Card and USB Card Reader/Writer
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
Additional included accessories (290 Series)
IEC Mains Lead
Additional included accessories (280 Series)
IEC Mains Lead
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
Fluke. Keeping your world
up and running.®
Fluke Corporation • One, two or four independent
PO Box 9090, Everett, WA U.S.A. 98206
Fluke Europe B.V. or inter-linked channels
PO Box 1186, 5602 BD
Eindhoven, The Netherlands • 40 MS/s or 100 MS/s, up to
For more information call:
In the U.S.A. (800) 443-5853 or 1 M words per channel 281
Fax (425) 446-5116
In Europe/M-East/Africa +31 (0) 40 2675 200 or
Fax +31 (0) 40 2675 222 • Function generator and pulse
In Canada (800)-36-FLUKE or
Fax (905) 890-6866 generator capabilities
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Web access: http://www.fluke.com
©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 01 294
Universal waveform generators offering
superior performance and excellent value
The Fluke 280 Series and the clock jitter associated with
290 Series Waveform DDS arbitrary generators and
Generators combine a permits waveform linking,
true variable clock looping and sequencing.
Waveforms may be defined
arbitrary waveform with up to 4096 vertical points Features
generator with a high and from 8 M to 1 M horizontal
performance DDS func- points (4 K to 64 K points on • 1, 2 or 4 waveform channels, 40 MS/s or 100 MS/s
280 Series units). independent or linked one, two or four channels
tion generator and pulse Arbitrary waveforms may be • 40 MS/s or 100 MS/s 12-bit arbitrary
generator in a single replayed at a specified waveform waveform capability using true
instrument. frequency, period or sample clock variable clock architecture Waveform creation have a USB interface. These can
rate. An external sample clock • 64 K or 1 M point waveform memory and editing be used for loading arbitrary
Wide model range per channel waveforms and for remote
can also be used on 290 Series • 16 MHz or 50 MHz function Waveform creation and editing control of all the instrum ent
The Fluke 280 Series and units allowing seamless on the generators using direct digital features are incorporated within functions.
290 Series comprise of six models: fly changes to output frequency. synthesis (DDS) the instrument. These inc lude
• 281 40 MS/s single-channel The 290 series waveform • Multiple standard waveforms includ- waveform insert, point edit, Waveform sequencing
waveform generator in 3U half storage is on removable Compact ing sine, square, triangle, haversine, line draw, amplitude adjust and
Pulse generator rack size case. Flash cards, making waveform ramp, pulse and sin(x)/x invert. The variable clock architec-
• 282 40 MS/s two-channel management easy and effectively • Pulse train pattern generation for up A wide range of standard ture of the 280 and 290 Series
unlimited. to 10 pulses enables waveforms to be
waveform generator in 3U case. • Complex waveform sequencing and waveforms are availa ble for sequenced. Up to 1024 arbitrary
• 284 40 MS/s four-channel Function generator looping capability using up to 1024 insertion within an arbitrary waveforms may be linked in a
waveform generator in 3U case. waveform segments waveform. Sections of existing sequence (16 waveforms on 280
Each channel can operate as a • Wide range sweep, AM, tone arbitrary waveforms can also
• 291 100 MS/s single-channel full DDS function generator. High switching, signal summing be inserted. For more sophis- Series). Each waveform can have
waveform generator in 3U half quality sine, cosine, haversine, • Inter-channel triggering, summing ticated waveform creation and a loop count of up to 32,768 and
rack size case. havercosine and square waves and phase control editing, Waveform Manager the whole sequence can be run
• 292 100 MS/s two-channel are available between 1 mHz and • Multiple generators can be easily Plus software for the Windows® continuously or rep eated more
waveform generator in 3U case. 16 MHz (280 Series) or up to 50 phase locked operating system is provided. than a million times.
Waveform sequencing • 294 100 MS/s four-channel MHz (290 Series). Triangle, ramp • External ARB clock input For multi-channel models,
and sine(x)/x waveforms are (290 Series only) Waveforms created on a PC waveforms on different channels
waveform generator in 3U case. available from 0.1 mHz up to • Waveform creation/editing tools built can be downloaded to the can be ‘daisy chained’ and
On multi-channel units, each 500 kHz. in; sophisticated external Windows instrument via the digital inter looped. By summing the channel
channel can be operated fully based software included faces (or memory card where outputs, multiple segments from
independently, or multiple chan- Pulse generator • Built-in trigger generator, gated and fitted). multiple channels can be used
nels can be linked using simple triggered burst modes
or complex relationships. Each channel can generate not • Tone switching facilitates precision Memory card storage to create highly complex wave-
just pulses, but also complex DTMF generation Fluke 290 Series units incorpo- forms.
A true arbitrary generator pulse trains. A pattern of up to • Unlimited waveform storage using CF rate a CompactFlash memory Wide range sweep
The 280 and 290 Series are 10 pulses can be quickly defined, memory cards (290 Series only) card, giving effectively unlim-
highly sophisticated 12-bit with each pulse having its own • GPIB (IEEE-488.2), RS-232 and USB ited storage for waveforms and All waveforms can be swept
amplitude, width and delay. interfaces (280 Series units have over their full freq uency range
arbitrary waveform generators The whole pulse train pattern GPIB and RS-232 only) setups. Waveform data can be at a rate variable between milli
capable of recreating virtually can then be replayed at a user transferred directly from a PC to seconds and minutes. Sweep
any waveform. True variable defined repetition rate. Where the memory card using the USB can be linear or logarithmic,
clock architecture is used with variable rise time pulses are card reader/writer supplied. single or continuous. Single
clock speeds between 0.1 Hz and required, the full arbitrary GPIB, RS-232, USB sweeps can be triggered from
100 MHz (40 MHz on 280 Series function can be used. the front panel, the trigger input,
units). This architecture avoids The 280 and 290 Series or the digital interfaces. Multiple
incorporate both RS-232 and channels can be swept simulta
GPIB (IEEE-488) interfaces as neously.
standard. 290 Series units also
2 Fluke 280 and 290 Series
Waveform Manager Plus software
Amplitude modulation Multi-channel phase Advanced waveform creation,
Amplitude modulation and locking editing and management
suppressed carrier modulation Any number of channels can software included with all
are available for all waveforms. be phase locked with offsets 280 and 290 Series generators
Any channel can be used to defined to a resolution of • Full waveform building tools includ-
modulate another channel. 0.1° (or 360°/waveform points ing standard waveforms, mathematic al
Alternatively, all channels can for arbitrary waveforms). For expressions, and freehand drawing
be modulated simultaneously via applications requiring more than •
the modulation input. four channels, multiple genera Full waveform building tools includ-
tors can be phase locked. Amplitude modulation ing standard waveforms, mathematic al
Built-in trigger generator 290 Series models can be phase expressions, and freehand drawing
All waveforms are available as locked to an external clock and • Operates under Windows 95, 98,
a triggered burst whereby each offer phase continuous Millennium, NT, 2000 and XP
trigger edge will produce one frequency changes. • Supports vertical resolutions up
burst of the carrier. Start and All models, including the to 16 bits (65536 points)
stop phase is fully variable. Both 281 and 291, have the facility • Supports horizontal resolutions
triggered and gated modes can for phase synchonising to to over one million points
be operated from the internal another similar generator. • Provides waveform import and
trigger generator, from an export via clipboard functions
adjacent channel, an external Multi-channel summing Tone switching • Directly supports waveform
source or a key press or remote Waveform summing sums the upload from some Tektronix DSOs Expression editor functions
command. The trigger generator waveform from any channel into The following mathematical operators
signal is available as a separate the next channel. Alternatively • Supports download and upload are available within the expression
output if required. any number of channels can via RS-232, GPIB and USB editor: add, subtract, multiply, divide, xn,
Tone switching be summed with an external sin, cos, arcsin, arccos, abs, log10, loge,
signal. This permits comp lex Waveform building tools en, square root, floor, ceiling, random,
The Fluke 280 and 290 Series modulations, such as noise Toolkit pulse, in conjunction with constants and
can provide triggered switching superimp osition, to be created. waveforms.
between up to 16 frequencies of Waveforms can be built in any number The expressions used for each section
standard or arbitrary waveforms. Inter-channel triggering Multi-channel phase locking of sections using any combination of
Tone switching modes can be and modulation the following: standard waveforms, of a waveform are retained and can be
gated, triggered or FSK using mathematical expressions, drawn displayed in a drop-down window.
any trigger source. By summing Because any channel can be waveforms, uploaded waveforms, Expression libraries
two channels together, it is pos- triggered by the previous or next imported waveforms (using clipboard),
sible to generate precise DTMF channel, waveforms on differe nt existing stored waveforms. The mathematical expressions used
test signals. channels can be “daisy chained” Waveform section limits can be defined for waveform creation can be stored in
and looped. By summing the via movea ble cursors, which can be libraries. A default library is created for
Fast and easy to use channel outputs, many segments dragged or positioned numeric ally. each project that includes a number of
All of the main information is from different channels can useful examples, including waveshapes
clearly displayed on a backlit be used to generate the final Standard waveforms and modulations.
waveform. A channel can be Multi-channel summing The following waveforms are available
80 character LCD. Eight soft keys used to AM modulate or SCM Waveform drawing
enable fast data editing. Param- modulate another channel. directly from the Waveforms dialogue functions
eters can be entered directly box: Sine, square, triangle, pulse, ramp,
from the num eric keypad or Digital modulation sinc [sin(x)/x], gaussian, exponent, noise. Waveforms can be created or edited
changed with the spin wheel. Inter-channel modulation and The mathematical expression for any using freehand drawing and/or
On the 2 and 4 channel models, summing allows the simulation standard waveform can be examined by point-to-point line drawing.
a Copy Channel key enables of various telecom digital modu- opening the expression editor window. Smoothing
similar setups to be created lation systems. Waveforms can be smoothed using a
across multiple channels with running average filter. Start and end
ease. Digital modulation points can be specified as well as the
number of points to average.
4 Fluke 280 and 290 Series Single and Multi-Channel Universal ARB Generators 5
Waveform Waveform import uses the “Text” Variable-clock ARB Fluke 290 Series: the
editing/conversion clipboard form at (i.e. numeric lists). This architecture next step forward
enables waveforms to be imported from
Toolkit spreadsheets such as Excel® software Direct replay for jitter-free The design of the new Fluke 290 Series
and from mathematical programs such generators is based upon extensive
All of the waveform building tools previ- as MathCad. Values are automatically waveforms experience of actual user requirements.
ously mentioned can be used to edit normalised and re-scaled. All Fluke 280 and 290 Series units So in addition to raising the maximum
existing waveforms. In addition, wave- Waveform export creates multiple generate arbitrary waveforms using a clock speed from 40 MHz to 100 MHz,
forms can be manipulated directly using clipboard form ats of Text (normalised variable clock architecture rather than a number of other important features
the following functions: numeric values between ± 1), Bitmap (as DDS. This ensures that every point in the have been added that meet the needs of
Resize waveform per on-screen display) and Picture (meta- waveform is replayed exactly as it was particular groups of customers.
file retaining waveform vector properties). defined, the rate of replay being set by 1 M word waveform memory
Allows a waveform to be resized Pictures or bitmaps can be pasted into the clock frequency.
horizontally to any length between programs such as Word for documenta- By contrast, a DDS arbitrary generator Some users require very long arbitrary
4 K to 64 K for 280 and 8 M to1 M for tion purposes. uses a fixed clock frequency and varies waveforms. 290 Series units incorporate
290. Note: The vertical resolution of a Display area and printing the replay rate by duplicating or omit- 1,048,576 words of waveform memory
waveform is automatically adjusted when ting waveform points. Unless there is per channel. Thus, even long and com-
it is downloaded to the generator. Thus Multiple waveform windows can be open an integer relationship between the plex waveforms that have no repetitive
an 8-bit waveform from a DSO will be simultaneously. Each window is fully desired replay rate, clock freq uency and elements can be accommodated.
expanded to 12 bits if it is downloaded to scaleable. Variable zoom is provided with waveform length, each “cycle” of the Compact Flash memory card storage
a 12-bit generator (and vice versa) panning from a “navigator” sub-window. waveform will differ from the previous provides effectively unlimited stora ge for
Waveform mathematics Waveform section limits can be one, resulting in jitter. waveforms. Greater sequencing capa-
defined via moveable cursors that can bility (up to 1024 segments) gives even
The Waveforms Maths function allows be dragged or positioned numerically. Sequencing for increased more flexibility in waveform reconstruc-
waveforms to be combined and manipu- Waveforms can be printed with waveform length tion.
lated indep endently of the expression automatic annotation and scaling. Variable clock architecture also allows External ARB clock input
editor. Waveforms can be scaled, offset, sequencing and looping. The 64K words
added, subtracted or multip lied using of waveform memory per channel pro- Some applications require that the
dialogue boxes. Waveforms can also be Management and vided in Fluke 280 Series units can be arbitrary waveform is clocked in direct
combined and manipulated within the utilities used to create arbitrary waveforms with synchronism with an external signal.
expression editor, giving access to the full many more than 65536 points. Fluke 290 Series units incorporate an
range of mathematical functions. Projects Many real-world waveforms include external ARB clock input that can be
To maintain good housekeeping, wave- repetitive elements. By using a seg used to clock any number of channels at
Input/output functions forms can be organized into “projects” ment of the memory to recreate each any rate from dc up to 50 MHz.
with separate directory structures. Each repeating element, the waveform can be It should be noted that DDS arbitrary
project maintains its own library of constructed by a “sequence” in which generators have no such capability.
File formats expressions. Waveforms and expressions the individual elements are rep layed
Waveforms can be read from and saved can be imported and exported from other in a defined order and with a defined
as any of the following formats: WFM projects. number of repetitions (loop count). In this
(binary), NRM (normalised data in ASCII), way waveforms can be created with a
WAV (WaveCAD), ASC (WaveCAD), DSF Instrument setup much greater number of points than the
(Tektronix DSO). The instrument setup screen enables waveform memory size.
Waveform download/upload options for the waveform generator to DDS arbitrary generators cannot do
be set from the program. Examples of set- this and the effective waveform length
Waveforms can be downloaded/uploaded table options are output amplitude, clock is limited to the actual waveform
to/from Fluke arbitrary generators (or frequency and trigger source. memory size.
certain Tektronix DSOs) using either an
RS-232 or GPIB (IEEE-488) interface or, Help
for the 290 Series, a USB interface. Full on-screen Help is available with a
Clipboard functions hyperlinked contents table.
Waveforms can be imported to the
6prFolugkera28m0 aandn2d90eSexrpiesorted from the program Single and Multi-Channel Universal ARB Generators 7
using the Windows® Clipboard.
System clock architecture Arbitrary waveforms Standard waveforms Triangle
All Fluke 290 Series units incorpo- Waveform parameters Sine, square, triangle, dc, positive ramp, negative ramp, sin(x)/x, 280 Series 290 Series
rate a separate clock generator for pulse, pulse train, cosine, haversine and havercosine. Frequency
each channel, allowing completely 280 Series 290 Series range 0.1 mHz to 100 kHz 0.1 mHz to 500 kHz
independent operation. Waveform memory 64k points/ch 1M points/ch All waveforms Frequency
On the Fluke 282 and Fluke Waveform length 4 to 65,536 points 8 to 1,048,576 points resolution 0.1 mHz or 7 digits 0.1 mHz or 10 digits
284, channel synchronization is Vertical resolution 12 bits (4096 levels) 280 Series Linearity
Sample clock rate 0.1 Hz to 40 MHz 0.1 Hz to 100 MHz (1) Frequency accuracy < 10 ppm for 1 year error < 0.1 % to 30 kHz
achieved by defining one channel Clock resolution 4 digits 8 digits Temp. stability Typically < 1 ppm/ °C
as the master channel and driving Clock accuracy < 10 ppm for 1 year (± 1 digit of setting) Output level 2.5 mV to 10 V pp into 50 Ω (5 mV to 20 V pp e.m.f.) Ramps and sin(x)/x
the other channel(s) from its clock. Clock temp. stability Typically < 1 ppm/ °C 280 Series 290 Series
The Fluke 292 and 294 provide Waveform storage 256K Words CF Memory Cards Sine, cosine, haversine, havercosine
a further option by incorporating Non-volatile RAM (32 MB to 1 GB size) Frequency 0.1 mHz to 100 kHz 0.1 mHz to 500 kHz
an additional independent system Max. waveforms 100 500 per card 280 Series 290 Series range
clock generator. The system clock Note 1: 290 Series generators can also use an external sample clock, dc to 50 MHz. Frequency range 0.1 mHz to 16 MHz 0.1 mHz to 40 MHz Frequency 0.1 mHz or 7 digits 0.1 mHz or 10 digits
Freq. resolution 0.1 mHz or 7 digits 0.1 mHz or 10 digits resolution
creates an internal version of the Waveform creation and editing Harmonic distortion < 0.1 % THD to 100 kHz; < 0.15 % THD to 100 kHz; Linearity < 0.1 % to 30 kHz
external ARB clock signal and can < –65dBc to 20 kHz, < -60 dBc to 20 kHz, error
generate frequencies between 0.1 All Models < –50dBc to 300 kHz, < -50 dBc to 1 MHz, Noise function (290 Series only)
Hz and 50 MHz. Internal Basic arbitrary waveform creation and editing tools are built < -35dBc to 10 MHz < -40 dBc to 10 MHz,
When the system clock (or into the instrument. Arbitrary waveforms can be built-up using < -30 dBc to 16 MHz < -30 dBc to 40 MHz Digital noise generated by a 35-bit linear
external ARB clock) is used to drive insertion of standard waveforms between points, point by point Nonharmonic spurii < –65 dBc to 1 MHz, < -60 dBc to 1 MHz, feedback register clocked at 100 MHz. User’s
value setting, and straight line drawing between points. < –65 dBc + 6 dB/octave < -60 dBc + 6 dB/octave external filter defines bandwidth and response.
multiple channels, phase skew is External All Fluke 280 and 290 series units are supplied with Wave- 1 MHz to 16 MHz 1 MHz to 40 MHz
significantly reduced and frequency form Manager Plus software for Windows which provides full Square
changes can be made without any waveform creation, editing and management. Waveforms are
discontinuities. transferred using the digital interfaces or memory card. 280 Series 290 Series
The system clock output is also Sequence Frequency range 1 mHz to 16 MHz 1 mHz to 50 MHz
available on the rear panel to drive A number of waveforms can be linked and played as a Freq. resolution 1 mHz or 4 digits 1 mHz or 8 digits
external circuitry or the external sequence. Each waveform can have a loop count of up Freq. accuracy ± 1 digit of setting
ARB input of another generator to 32,768. A sequence of waveforms can be looped up to Rise and fall times < 25ns < 8ns
when more than four channels are 1,048,575 times or run continuously.
required. Pulse and pulse train
280 Series 290 Series
Auxiliary sinewave output Max. waveforms in a 16 1024 280 Series 290 Series
The output of the master clock sequence Period range 100 ns to 100 s 40 ns to 100 s
generator is also available as a Output filter Period resolution 4 digits 8 digits
fixed level sinewave. When not Period accuracy ± 1 digit of setting
being used as the master for The output filter type is selectable. This can be used to optimize Delay range -99.99s to + 99.99s
channel synchronization, this can a particular waveshape. Delay resolution 0.002 % of period 0.001 % of period
be used as another independent 280 Series 290 Series (25 ns minimum) (10 ns minimum)
variable frequency generator over Filter choice 16 MHz elliptic, 10 MHz 40 MHz elliptic, 20 Width range 25 ns to + 99.99 s 10 ns to + 99.99 s
the range 0.1 Hz to 50 MHz, elliptic, 10 MHz Bessel MHz Bessel or none Width resolution 0·002 % of period 0.001 % of period
or none (25 ns minimum) (10 ns minimum)
providing the equivalent of three Rise and fall times < 25 ns < 8 ns
or five channel outputs. Note that the pulse width and absolute value of the delay may
Specifications apply between not exceed the pulse period at any time. Pulse trains of up to
18 °C to 28 °C after 30 minutes 10 pulses may be specified, each pulse having independe ntly
warm up, at maximum output defined width, delay and level. The baseline voltage is sepa-
into 50 Ω. rately defined and the sequence repetition rate is set by the
pulse train period.
8 Fluke 280 and 290 Series Single and Multi-Channel Universal ARB Generators 9
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
Operating modes signal is false. The next tone is output Outputs
when the trigger signal is true again.
Continuous Triggered: The tone is output when the Main output—One for each channel
Waveform runs continuously. trigger signal goes true and the next tone is 280 Series 290 Series
output, at the end of the current waveform Output impedance 50 Ω
Triggered burst cycle, when the trigger signal goes true Amplitude range 5 mV to 20 V pp open circuit (2.5 mV to 10 V pp into
Each active edge of the trigger signal will produce one burst again. 50 Ω). Amplitude can be specified open circ uit (hi Z)
of the waveform. or into an assumed load of 50 Ω or 600 Ω in Vpk-pk,
FSK: The tone is output when the trigger Vrms or dBm.
280 Series 290 Series Amplitude accuracy 2 % ± 1 mV at 1 kHz into 50 Ω
Carrier waveforms All standard and arbitrary waveforms signal goes true and the next tone is Amplitude flatness ± 0.2 dB to 200 kHz; ± 0.2 dB to 1 MHz;
Max. carrier 1 MHz or the maxi- 2.5 MHz or the maxi output, immediately, when the trigger ± 1dB to 10 MHz; ± 0.4 dB to 40 MHz
frequency mum for the selected mum for the selected signal goes true again. Using 2 channels ± 2.5 dB to 16 MHz
waveform if lower. 40 waveform if lower. 100 with their outputs summed together it is DC offset range ± 10 V from 50 Ω. Offset plus signal peak limited
Msamples/s for ARB and Msamples/s for ARB and possible to generate DTMF test signals. to ± 10 V.
Number of cycles 1 to 1,048,575 DC offset accuracy Typically 3 % ± 10 mV, unattenuated
Trigger repetition 0.005 Hz to 100 kHz internal, dc to 1 MHz external. Trigger generator: Internal source 0.005 Resolution 3 digits or 1 mV for both Amplitude and DC Offset
Trigger signal Source Internal from keyboard, previous channel, next Hz to 100 kHz square wave adjustable in Auxiliary sine output
channel or trigger generator. External from TRIG IN 10 us steps. 3-digit resolution. Available for
or remote interface. external use from any SYNC OUT socket. 280 Series 290 Series 292/294
Trigger start/stop ± 360° settable with 0.1° resolution, subject to n/a n/a Nominal 1V p-p sinewave, frequency set by
phase waveform frequency and type. system clock, frequency 0.1 Hz to 50 MHz
Gated Multi channel sweep
Waveform will run while the Gate signal is true and stop while false. (multi-channel units only)
280 Series 290 Series Any number of channels may be swept simul- Sync out—One for each channel
Carrier waveforms All standard and arbitrary waveforms taneously. Amplitude, Offset and Waveform can Multifunction output user definable or automatically selected to
Max. carrier 1 MHz or the maximum 2.5 MHz or the maxi be set independently for each channel. For Fluke be any of the following:
frequency for the selected waveform mum for the selected 280 Series 290 Series
if lower. 40 Msamples/s waveform if lower. 100 280 units the sweep parameters will be the
for ARB and Sequence Msamples/s for ARB and same for all channels. For Fluke 290 units the Waveform sync: (all waveforms) Square wave with 50 % duty cycle at the main waveform frequency, or pulse
Sequence sweep parameters can be set independently for coincident with the first few points of an arbitrary waveform
Number of cycles 1 to 1,048,575 each channel. Position markers: (Arbitrary only) Any point(s) on the waveform may have associated marker bit(s) set high or low
Trigger repetition 0.005 Hz to 100 kHz internal, dc to 1 MHz external Burst done Produces a pulse coincident with the last cycle of a burst
Gate signal source Internal from keyboard, previous channel, next Tone switching Sequence sync Produces a pulse coincident with the end of a waveform sequence
channel or trigger generator. External from TRIG IN
or remote interface. Capability provided for both standard and Trigger Selects the current trigger signal. Useful for sync hronizing burst or gated signals.
Gate start/stop phase ± 360° settable with 0.1° resolution, subject to arbitrary waveforms. Arbitrary waveforms are
waveform frequency and type expanded or condensed to exactly 4096 points Sweep sync Outputs a pulse at the start of sweep to synchronize an oscilloscope or recorder
Sweep and DDS techniques are used to allow instanta- Sweep marker N/A Additional pulse for use as sweep marker
Frequency sweep capability is provided for both standard and neous frequency switching. Phase lock out Used to phase lock two generators. Produces a positive edge at the 0° phase point.
arbitrary waveforms. Arbitrary waveforms are expanded or con- 280 Series 290 Series Signal level Logic levels of < 0.8 V and > 3 V for Logic levels of < 0.8 V and > 3 V for
densed to exactly 4096 points and DDS techniques are used to Carrier All except pulse, pulse train and sequence all outputs all outputs except Sweep Sync
perform the sweep. Frequency Up to 16 Up to 16 frequencies Signal level: (sweep sync. only) N/A 3 level waveform - as above but plus
280 Series 290 Series list frequencies from from 1mHz to 40 MHz narrow +1 V pulse at marker
Carrier waveforms All standard and arbitrary except pulse, pulse train 1 mHz to 10 MHz
and sequence Trigger 0.005 Hz to 100 kHz internal. dc to 1MHz
Sweep mode Linear or logarithmic, triggered or continuous repetition external. Usable repetition rate and
rate waveform frequency depend on the tone
Sweep direction Up, down, up/down or down/up. switching mode.
Sweep range From 1 mHz to 16 MHz in From 1 mHz to 40 MHz in Trigger Internal from keyboard, previous channel,
one range one range source next channel or trigger generator. External
Sweep time 30 ms to 999 s 1 ms to 999 s from TRIG IN or remote interface.
Marker Variable during sweep Tone Gated, Triggered or FSK (see box top right)
Sweep trigger source The sweep may be free run or triggered from the switching
following: Manually from keyboard. Externally from modes
TRIG IN input or remote interface
Sweep hold Sweep can be held / restarted by the HOLD key Single and Multi-Channel Universal ARB Generators 11
Trig in Hold ARB clock out Inter-channel modulation
280 Series 290 Series Holds an arbitrary waveform at See ARB clock In/Out within INPUTS section. The waveform from any channel may be used to Amplitude
Frequency range DC to 1 MHz its current position. A TTL low Modulate (AM) or Suppressed Carrier Modulate (SCM) the next
Signal range Threshold nominally TTL Threshold adjustable level or switch closure causes the Cursor/marker out (280 Series units only) channel. Alternatively any numb er of channels may be
level; maximum input over ± 5 V range; waveform to stop at the current Adjustable output pulse for use as a marker in Modulated (AM or SCM) with the signal at the MODULATION
± 10 V maximum input ± 10 V position and wait until a TTL high sweep mode or as a cursor in arbitrary wave- input socket.
Min. pulse width 50 ns, for Trigger/Gate; 50 us for Sweep mode level or switch opening which form editing mode. Can be used to modulate the 282/284/292/294
Polarity Selectable as high/rising edge or low/falling edge allows the waveform to continue. Z axis of an oscilloscope or be displayed on a Carrier frequency Entire range for selected waveform
The front panel MAN HOLD key second ‘scope channel. Carrier waveforms All standard and arbitrary waveforms
Input impedance Typically 10 kΩ or remote command may also be
used to control the Hold function. 280 Series 290 Series Modulation types AM: Double sideband with carrier. SCM: Double
Modulation in Signal level: Adjustable from N/A sideband suppressed carrier.
While held the front panel MAN nominally 2 V to 14 Modulation source Internal from the previous channel. External from
280 Series 290 Series TRIG key or remote command V, normal or inverted; Modulation input socket. The external modulation
Frequency range DC to 100 kHz DC to 100 kHz may be used to return the wave- adjustable width as a signal may be applied to any number of channels
form to the start. The Hold input cursor simultaneously.
VCA signal range Approximately 1 V pk-pk for 100 % level change at Output 600 Ω typical N/A Frequency range DC to > 100 kHz
maximum output may be enabled independently impedance: Internal AM depth 0 % to 105 %.
SCM signal range Approximately ± 1 V pk for maximum output. for each channel. Input imped- Internal AM resolution 1%
Input impedance Typically 1 kΩ ance is10kΩ. System clock (292/294 only) Carrier suppression > 40 dB
Sum in Channel relationships The 292/294 units incorporate an additional (SCM)
frequency generator, which can be used as a External modulation VCA: Approximately 1V pk-pk for 100 % level
280 Series 291 292/294 The channels of a multi-channel clock source for multi-channel arbitrary wave- signal range change at maximum output. SCM: Approximately ±
Frequency range DC to 8 MHz DC to 30 MHz DC to 16 MHz unit can be operated entirely 1 V pk for max. output.
Signal range Approximately 2 V pk-pk input for 20 V pk-pk outp ut independently, as if they were forms and as an auxiliary output.
separate generators. The “copy” 280 291 292/294 Inter-channel analog summing
Input impedance Typically 1 kΩ key allows the settings of any Series Waveform Summing sums the waveform from any channel into
Frequency N/A N/A DC to 50 MHz the next channel. Alternatively any number of channels may be
Ref clock in/out channel to be instantly copied to range summed with the signal at the SUM input socket.
another when required. Frequency N/A N/A 0.1 Hz
280 Series 290 Series Alternatively, inter-channel resolution 282/284 292/294
Set to input Input for an external 10MHz reference clock. relationships of modulation, Carrier frequency Entire range for selected waveform
TTL/CMOS threshold level summing, triggering, or phase The output of the system clock is available as a
Set to output Buffered version of the internal 10 MHz clock. Output locking can be set up. 1 volt pk-pk sinewave at the Auxiliary Sine Out Carrier waveforms All standard and arbitrary waveforms
levels nominally 1 V and 4 V from 50 Ω socket, and as a logic level squarewave at the Sum source Internal from the previous channel. External from
Set to phase lock Used together with SYNC OUT on a master and Multi channel sweep SUM IN socket
TRIG IN on a slave to synchronize (phase lock) two Ext. ARB In/Out socket. Frequency range DC to > 8 MHz. DC to > 16 MHz.
separate generators Any number of channels may be When not being used as a clock source for External signal range Approx. 5 V pk-pk input Approx. 2 V pk-pk input
swept simultaneously. Amplitude, multi-channel arbitrary waveforms, the system for 20 V pk-pk output for 20 V pk-pk output
ARB clock in/out Offset and Waveform can be set clock provides an independent fixed amplitude Input impedance Typically 1 kΩ
290 Series generators can use an external signal as the arbitrary independently for each channel. sine or square output which is additional to the
waveform clock. The 292 and 294 also include an internal system For 280 Series units, the sweep two or four main channel outputs.
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
280 Series 291 292/294 be set independently for each
Set to input N/A Input for an external Arb clock. channel.
TTL/CMOS threshold level.
Set to output N/A N/A Outputs System Clock,
logic level < 0.8 V to > 3 V
Frequency range N/A DC to 50 MHz.
Max. input voltage N/A +5 V, -1 V
12 Fluke 280 and 290 Series Single and Multi-Channel Universal ARB Generators 13
Inter-channel phase 282/284 292/294 General
locking Phase resolution: 0.1 degree 280 Series 290 Series
Two or more channels may be (DDS waveforms) Display 20 character x 4 row alphanumeric LCD
phase locked together. Each Phase resolution: 0.1 degree or 360 degrees/number of points Data Entry Keyboard selection of mode, wave etc., value entry direct by
locked channel may be assigned (Non DDS waveforms) numeric keys or by rotary control
a phase angle relative to the Clock source Master channel Master Channel, System Memory Card N/A Removable card slot conforming to
Clock or Ext. ARB clock the Compact Flash standard. Sizes
other locked channels. With one Phase error < ± 10 ns < ± 5 ns (internal clock) 32 MB to 1 GB.
channel assigned as the Master < +/-2 ns (external ARB
and other channels as Slaves, a or system clock) Waveform Up to 100 waveforms Up to 500 waveforms per CF card
frequency change on the master N.B. DDS waveforms are Sine, Cosine, Haversine, Havercosine, Storage: within 256 K words
will be repeated on each slave Triangle, Ramps and Sin(x)/x. Non DDS waveforms are Pulse, (non volatile)
thus allowing multiphase wave- Pulse Train, and all Arbitrary waveforms. Stored Settings Up to 9 full setups Up to 500 full setups per CF card
forms at the same frequency to Inter-channel triggering Mechanical, power, compliance
be easily generated. The signals
from the REF IN/OUT socket and Any channel can be triggered by the previous or next channel. 281 291 282 292 284 294
the SYNC OUT socket can be used The previous/next connections can be used to ’daisy chain’ a Width 212 mm (½ rack) 350 mm
to phase lock two instruments trigger signal from a ‘start’ channel, through a number of chan- Height 130 mm (3 U) 130 mm (3 U)
where more than 4 channels nels in the ‘chain’ to an ‘end’ channel. Each channel receives the Length 335 mm 335 mm
are required. Different condition trigger out signal from the previous (or next) channel, and drives Weight 4.1 kg 4.2 kg 7.1 kg 5.9 kg 7.2 kg 6.0 kg
apply to Standard waveforms its selected trigger out to the next (or previous) channel. The ‘end’ Power A B A C A C
generated using DDS techniques channel trigger out can be set up to drive the ‘start’ chann el, A = 230 V, 115 V or 100 V ± 14 %, 50/60 Hz, adjustable internally B = 230 V,
(sine, cosine, haversine, closing the loop. In this way, complex and versatile inter-channel 115 V or 100 V ± 14 %, 50/60/400 Hz, adjustable internally C =100 V to 230
havercosine, triangle, ramps and trigger schemes may be set up. Each channel can have its trigger V ± 14 %, 50/60/400 Hz, universal input
sinex/x), and those generated out and its output waveform set up independently. Trigger out Maximum VA 40 60 75 150 100 150
using variable clock arbitrary Temperature Operating Range +5 °C to 40 °C, 20-80 % RH Storage
may be selected from Waveform End, Position Markers, Sequence Range -20 °C to +60 °C.
waveform techniques which Sync or Burst Done. Environmental Indoor use at altitudes to 2000 m, Pollution Degree 2
include square, pulse and pulse Safety Complies with EN61010-1
train. Arbitrary waveforms and Interfaces EMC Complies with EN61326
waveform sequences may be Full remote control and waveform transfer is available through the
phase locked to the Master digital interfaces.
channel, but certain constraints 280 Series 290 Series
apply to waveform lengths and IEEE488 Conforms with IEEE488.1 and IEEE488.2
clock frequency ratios. 292/294 RS232 Variable baud rate, 9600 Variable baud rate, 38400
arbitrary waveforms and wave- baud maximum baud maximum
form sequences can alternatively USB N/A Conforms with USB1.1
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 addi-
tion, 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 Single and Multi-Channel Universal ARB Generators 15
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2423164 FLUKE-284 FLUKE-281