FLUKE-290 Series

The maximum arbitrary waveform size is 1 M points. Up to 500 user-defined waveforms may be stored on the removable memory card. Arbitrary waveforms can be defined by front panel editing controls, by downloading of waveform data via RS-232,USB or GPIB, or by writing directly to the removable memory card using the USB card reader/writer connected to a PC.

1 M points. Minimum waveform size is 8 points.

12 bits

100 mHz to 80 MHz

4 digits

± 1 digit of setting

Selectable between 40 MHz Elliptic, 20 MHz Bessel or none

Up to 1024 waveforms may be linked. Each waveform can have a loop count of up to 32,768. A sequence of waveforms can be looped up to 1,048,575 times or run continuously.

Digital noise generated by a 35-bit linear feedback register clocked at 100 MHz. User’s external filter defines bandwidth and response

Sine, square, triangle, DC, positive ramp, negative ramp, sin(x)/x, pulse, pulse train, cosine, haversine and havercosine

0.1 mHz to 40 MHz

0.1 mHz or 10 digits

Better than 10 ppm for 1 year

Typically < 1 ppm/°C

5 mV to 20 V p-p from 50 Ω

< 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

1 mHz to 50 MHz

1 mHz (4 digits)

± 1 digit of setting

5 mV to 20 V p-p from 50 Ω

< 8 ns

0.1 mHz to 500 kHz

0.1 mHz or 10 digits

Better than 10 ppm for 1 year

5 mV to 20 V p-p from 50 Ω, linearity error: < 0.1 % to 30 kHz

0.1 mHz to 500 kHz

0.1 mHz or 10 digits

Better than 10 ppm for 1 year

5 mV to 20 V p-p from 50 Ω

< 0.1 % to 30 kHz

5 mV to 20 V p-p from 50 Ω

< 8 ns

Range: 40 ns to 100 s; Resolution: 4-digits; Accuracy: ± 1 digit of setting

Range: –99.9 s to + 99.99 s; Resolution: 0.001 % of period or 10 ns

Range: 10 ns to 99.99 s; Resolution: 0.001 % of period or 10 ns

Waveform runs continuously

Each active edge of the trigger signal will produce one burst of the waveform

All standard and arbitrary

The smaller of 2.5 MHz or the maximum for the selected waveform. 100 Msamples/s for ARB or Sequence.

1 to 1048575

0.005 Hz to 100 kHz internal, dc to 1 MHz external

Internal from keyboard or trigger generator. External from TRIG IN or remote interface.

± 360 ° settable with 0.1 ° resolution, subject to waveform frequency and type

Waveform will run while the Gate signal is true and stop while false

All standard and arbitrary

The smaller of 2.5 MHz or the maximum for the selected waveform. 80 Msamples/s for ARB or Sequence.

0.005 Hz to 100 kHz internal, dc to 1 MHz external

Internal from keyboard or trigger generator. External from TRIG IN or remote interface.

± 360 ° settable with 0.1 ° resolution, subject to waveform frequency and type

Capability 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.

All standard and arbitrary except pulse, pulse train and sequence. Sweep mode: Linear or logarithmic, continuous or triggered.

Up, down, up/down or down/up

1 mHz to 40 MHz in one range. Phase continuous. Independent setting of start/stop frequency.

1 ms to 999 s (3 digit resolution)

Variable during sweep.

The sweep may be free run or triggered from the following sources: Manually from keyboard. Externally from TRIG IN input or remote interface.

Sweep can be held and restarted by HOLD key

Capability provided for both standard and arbitrary waveforms. Arbitrary waveforms are expanded or condensed to exactly 4096 points and DDS techniques used to allow instantaneous frequency switching.

All waveforms bar pulse, pulse train, sequence

Up to 16 frequencies from 1 mHz to 40 MHz

0.005 Hz to 100 kHz internal, dc to 1 MHz external. Usable repetition rate and waveform frequency depend on the tone switching mode.

Internal from keyboard or trigger generator. External from TRIG IN or remote interface.

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.

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.

The tone is output when the trigger signal goes true and the next tone is output, immediately, when the trigger signal goes true again.

Entire range for selected waveform

All standard and arbitrary waveforms

Modulation socket

DC to 500 kHz

Approx. 1 V pk-pk for 100 % level change at maximum output

Entire range for selected waveform

All standard and arbitrary waveforms

Sum socket

DC to 16 MHz

Approximately 2 Vpk-pk input for 20 Vpk-pk output.

Internal source 0.005 Hz to 100 kHz squarewave adjustable in 10 us steps. 3 digit resolution. Available for external use from the SYNC OUT socket.

50 Ω

5 mV to 20 V pk-pk open circuit (2.5 mV to 10 V pk-pk into 50 Ω. Amplitude can be specified open circuit (Hi Z) or into an assumed load of 50 Ωor 60 Ω, in Vpk-pk, Vrms or dBm.

Better than 2 % ± 1 mV at 1 kHz into 50 Ω.

± 0.2 dB to 1 MHz; ± 0.4 dB to 40 MHz

± 10 V. DC offset plus signal peak limited to ± 10 V from 50 Ω.

Typically within ± 3 % ± 10 mV, unattenuated

3 digits or 1 mV for both Amplitude and DC Offset

Multifunction output user definable or automatically selected to be any of the following:

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.

Any point(s) on the waveform may have associated marker bit(s) set high or low

Produces a pulse coincident with the last cycle of a burst

Produces a pulse coincident with the end of a waveform sequence

Selects the current trigger signal. Useful for synchronising burst or gated signals.

Outputs a pulse at the start of sweep to synchronise an oscilloscope or recorder. Can additionally output a sweep marker.

Used to phase lock two generators. Produces a positive edge at the 0o phase point.

Logic level of < 0.8 V to > 3 V for all outputs except Sweep Sync. Sweep Sync is a 3-level waveform.

DC to 1 MHz

Threshold nominally TTL level; max. input ± 10 V

50 ns for Trigger and Gate modes; 50 µs for Sweep mode

10 kΩ

DC to 500 kHz

VCA: Approximately 1 Vpk-pk for 100 % level change at maximum output

SCM: Approximately ± 1 Vpk for maximum output

Typically 1 kΩ

DC to 30 MHz (291) DC to 16 MHz (292/294)

Approximately 2 Vpk-pk input for 20 Vpk-pk output

Typically 1 kΩ

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.

10 kΩ

Input for an external 10 MHz reference clock. TTL/CMOS threshold level.

Buffered version of the internal 10 MHz clock. Output levels nominally 1 V and 4 V from 50 Ω.

Used together with SYNC OUT on a master and the TRIG IN on a slave to synchronize (phase lock) two generators

DC to 50 MHz

+ 5 V, -1 V

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.

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 1 V pk-pk for 100 % level change at maximum output

SCM: Approximately ± 1 Vpk for max. output

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.

Entire range for selected waveform

All standard and arbitrary waveforms

Internal from the previous channel. External from SUM IN socket.

DC to > 16 MHz

Approx. 5 Vpk-pk input for 20 Vpk-pk output

Two or more channels may be phase locked together. Each locked channel may be assigned a phase angle relative to the other locked channels. Arbitrary waveforms and waveform sequences may be phase locked but certain constraints apply to waveform lengths and clock frequency ratios.

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.

DDS waveforms: 0.1 degree

0.1 degree or 360 degrees/number of points whichever is the greater

< ± 10 ns all waveforms.

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.

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.

Variable Baud rate, 9600 Baud maximum

Conforms with IEEE488.2

Conforms with USB 1.1

20 character x 4 row alphanumeric LCD

Keyboard selection of mode, waveform etc.; value entry by numeric keys or by rotary control.

Removable memory card conforming to the Compact Flash memory card standard. Sizes from 32 MB to 1 GB can be used.

Up to 500 complete instrument set-ups may be stored and recalled from the memory card. Up to 500 arbitrary waveforms can also be stored independent of the instrument settings.

130 mm (3U) high; 335 mm long; 350 mm wide (292/294), 212 mm wide (291)

292/294: 7.2 kg (16 lb); 291: 4.1 kg (9 lb)

110 to 120 V or 100 V nominal 50/60/400 Hz; 220 to 240 V nominal, 50/60 Hz. Voltage adjustable internally; operating range ± 10 % of nominal; 60 VA max. Installation Category II.

+5 °C to 40 °C, 20 to 80 % RH

–20 °C to +60 °C

Indoor use at altitudes to 200 m, Pollution Degree 2

Complies with EN61010-1

Complies with EN61326

Labview and LabWindows CVI drivers are either supplied with the instrument or are available via your local Fluke Office

IEC Mains Lead. Printed manual (partly multi-language), multi-language manual on CD, Waveform Manager Plus software, compact Flash memory card, compact Flash card reader/writer (USB connection to PC)

19-inch rack mounting kit