FLUKE-280 Series

Maximum waveform size is 65,536 points; minimum waveform size is 4 points. Up to 100 user defined waveforms may be stored in the 256 K point nonvolatile RAM. Waveforms can be defined by front panel editing controls or by downloading of waveform data via RS-232 or GPIB.

64 k points per channel

12 bits

100 mHz to 40 MHz

4 digits

± 1 digit of setting

Up to 16 waveforms may be linked. Each waveform can have a loop count of up to 32,768. A sequence of waveforms can be looped up to 1,048,575 times or run continuously.

Selectable between 16 MHz Elliptic, 10 MHz Elliptic, 10 MHz Bessel or none

10 ppm for 1 year

Typically < 1 ppm/ºC.

2.5 mV to 10 Vpp into 50 Ω

0.1 mHz to 16 MHz

0.1 mHz or 7 digits

< 0.1 % THD to 100 kHz;

< –65 dBc to 20 kHz,

< –50 dBc to 300 kHz,

< –35 dBc to 10 MHz

< –30 dBc to 16 MHz

< –65 dBc to 1 MHz,

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

1 mHz to 16 MHz

1 mHz (4 digits)

± 1 digit of setting

< 25 ns

< 25 ns

100 ns to 100 s

4 digit

± 1 digit of setting

–99.99 s to + 99.99 s

0.002 % of period or 25 ns, whichever is greater

25 ns to 99.99 s

0.002 % of period or 25 ns, whichever is greater

0.1 mHz to 100 kHz

0.1 mHz or 7 digits

< 0.1 % to 30 kHz

0.1 mHz to 100 kHz

0.1 mHz (7 digits)

0.1 % to 30 kHz

Waveform runs continuously

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

All standard and arbitrary

40 Msamples/s for ARB and Sequence. 1 MHz or the maximum for the selected waveform.

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

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

All standard and arbitrary

40 Msamples/s for ARB and Sequence. 1 MHz or the maximum for the selected waveform.

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

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.

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 one range. Phase continuous. Independent setting of the start and stop frequency.

30 ms to 999 s

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 the HOLD key

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.

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.

All except pulse, pulse train and sequence

Up to 16 frequencies from 1 mHz to 10 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, previous channel, next channel 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. Using 2 channels with their outputs summed together it is possible to generate DTMF test signals.

Internal source 0.005 Hz to 100 kHz square wave adjustable in 10 us steps. 3-digit resolution. Available for external use from any SYNCOUT socket.

50 Ω

5 mV to 20 Vpp open circuit (2.5 mV to 10 Vpp into 50 Ω). Amplitude can be specified open circuit (hi Z) or into an assumed load of 50 Ω or 600 Ω Vpkpk, Vrms or dBm.

2 % ± 1 mV at 1 kHz into 50 Ω

± 0.2 dB to 200 kHz; ± 1 dB to 10 MHz; ± 2.5 dB to 16 MHz

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

Typically 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 synchronizing burst or gated signals.

Outputs a pulse at the start of sweep to synchronize an oscilloscope or recorder.

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

TTL/CMOS logic levels from typically 50 Ω.

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.

Output Signal Level: Adjustable from nominally 2 V to 14 V, normal or inverted; adjustable width as a cursor.

600 Ω typical

DC to 1 MHz

Threshold nominally TTL level; maximum input ± 10 V

50 ns, for Trigger/Gate; 50 us for Sweep mode

Selectable as high/rising edge or low/falling edge

10 kΩ

DC to 100 kHz

Approximately 1 V pkpk for 100 % level change at maximum output

Approximately ± 1 V pk for maximum output

Typically 1 kΩ

DC to 8 MHz

Approximately 2 V pk-pk input for 20 V pk-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. 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.

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 TRIG IN on a slave to synchronise (phase lock) two separate generators.

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

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

Approximately ± 1 V pk 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 > 8 MHz

Approx. 5 V pk-pk input for 20 V pk-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 or 360 degrees/number of points whichever is the greater

< ± 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.

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.

Variable Baud rate, 9600 Baud maximum

Conforms with IEEE488.1 and IEEE488.2

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

20 character x 4 row alphanumeric LCD

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

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

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

130 mm (3 U) height; 335 mm long; width 350 mm (282/284), 212 mm (281)

7.2 kg. (16 lb) (282/284); 4.1 kg (9 lb) (281)

230 V, 115 V or 100 V nominal 50/60 Hz, adjustable internally; operating range ± 14 % of nominal;100 VA max. for 4 channels, 75 VA max. for 2 channel, 40 VA max. for 1 channel. Installation Category II.

+5 °C to 40 °C, 20-80 % RH

–20 °C to + 60 °C

Indoor use at altitudes to 2000 m, Pollution Degree 2

19-in rack mounting kit

Complies with EN61010-1

Complies with EN61326