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RCL 미터

Fluke-290 Series

FLUKE-280 Series

Arbitrary Waveforms

Waveforms

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.

Waveform memory

1 M points. Minimum waveform size is 8 points.

Vertical resolution

12 bits

Sample clock range

100 mHz to 80 MHz

Resolution

4 digits

Accuracy

± 1 digit of setting

Output filter

Selectable between 40 MHz Elliptic, 20 MHz Bessel or none

Sequence

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.

Noise function

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

Standard Waveforms

Waveforms

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

Sine, Cosine, Haversine, Havercosine

Range

0.1 mHz to 40 MHz

Resolution

0.1 mHz or 10 digits

Accuracy

Better than 10 ppm for 1 year

Temperature stability

Typically < 1 ppm/°C

Output level

5 mV to 20 V p-p from 50 Ω

Harmonic distortion

< 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

Non-harmonic spurii

< –60 dBc to 1 MHz, < –60 dBc + 6 dB/octave 1 MHz to 40 MHz

Square

Range

1 mHz to 50 MHz

Resolution

1 mHz (4 digits)

Accuracy

± 1 digit of setting

Output level

5 mV to 20 V p-p from 50 Ω

Rise and fall times

< 8 ns

Triangle

Range

0.1 mHz to 500 kHz

Resolution

0.1 mHz or 10 digits

Accuracy

Better than 10 ppm for 1 year

Output level

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

Ramps and Sin(x)/x

Range

0.1 mHz to 500 kHz

Resolution

0.1 mHz or 10 digits

Accuracy

Better than 10 ppm for 1 year

Output level

5 mV to 20 V p-p from 50 Ω

Linearity error

< 0.1 % to 30 kHz

Pulse and Pulse Train

Output level

5 mV to 20 V p-p from 50 Ω

Rise and fall times

< 8 ns

Period

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

Delay

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

Width

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

Trains of up to 10 pulses may be specified, each 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.

Operating Modes

Continuous

Waveform runs continuously

Triggered Burst

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

Carrier waveforms

All standard and arbitrary

Max. carrier frequency

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

Number of Cycles

1 to 1048575

Trigger rep. rate

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

Trigger source

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

Start/stop phase

± 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

All standard and arbitrary

Max. carrier frequency

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

Trigger rate

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

Gate signal source

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

Start/stop phase

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

Sweep

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.

Carrier waveforms

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

Sweep direction

Up, down, up/down or down/up

Sweep range

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

Sweep time

1 ms to 999 s (3 digit resolution)

Marker

Variable during sweep.

Sweep trig. Source

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

Sweep hold

Sweep can be held and restarted by HOLD key

Tone Switching

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.

Carrier waveforms

All waveforms bar pulse, pulse train, sequence

Frequency list

Up to 16 frequencies from 1 mHz to 40 MHz

Trigger rep. rate

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

Source

Internal from keyboard 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.

External Amplitude Modulation

Carrier frequency

Entire range for selected waveform

Carrier waveforms

All standard and arbitrary waveforms

Modulation source

Modulation socket

Frequency range

DC to 500 kHz

Signal range