Tektronix (Keithley) 3390 Arbitrary Waveform/Function Generator


Arbitrary Waveform Generation (ARB)

With the Model 3390, you can precisely replicate real world signals. This 14-bit ARB provides the ability to define waveforms with up to 256,000 data points and generate them at a sampling rate of 125MSamples/second. For ease of use, up to four user-defined waveforms can be stored in the onboard non-volatile memory.

Function Generation

Standard output waveforms can be created by pressing one button on the front panel. Ten standard waveforms are provided, including the basic sine, square, ramp, and triangle shapes. The Model 3390 offers the highest repetition rates of any instrument in its class, allowing you to better emulate the signals you need to test.

Pulse Generation

Pulse capabilities have become critically important as devices being tested have become smaller, more sensitive, and more complex. To accurately duplicate the signals these tiny devices receive, very clean pulses with crisp edges are mandatory, which is why the Model 3390 offers the fastest rise time (5ns) and cleanest pulse shapes for this class of instrument.

Modulating Waveforms

The ability of the Model 3390 to modulate at high internal frequencies allows you to accurately simulate real-world conditions. Modulate any of your signals with the built-in AM, FM, PM, PWM, or FSK source, or use your own external modulation source.

Noise Generation

Inject noise into your device under test with the press of a button. The adjustable amplitude and offset parameters control how much or how little noise is produced. The fast rise times and high speed capability provides the precise noise simulation your applications require.

SKU: Function Genera

Category: Test & Measuring Instrument, Tektronix Products

Product Details


Sine Specification
Frequency 1μHz to 50MHz
Amplitude Flatness1,2 (Relative to 1KHz)


0.15dB(100kHz to 5MHz)

0.3dB(5MHz to 20MHz)

0.5dB(20MHz to 50MHz)

Harmonic distortion2,3 (unit: dBc)

DC to 20kHz: -60(<1Vpp) -60(≥1Vpp)

20 kHz to 100 KHz: -65(<1Vpp) -60(≥1Vpp)

100 kHz to 1 MHz: -50(<1Vpp) -45(≥1Vpp)

1 MHz to 20 MHz: -40(<1Vpp) -35(≥1Vpp)

20 MHz to 50 MHz: -30(<1Vpp) -30(≥1Vpp)

Total harmonic distortion 2,3 DC to 20kHz, V ≥ 0.5Vpp THD ≤ 0.06%, typical
Spurious2,4 (non-harmonic)

DC to 1MHz -70dBc

1MHz to 50MHz

-70dBc + 6dB/octave

Phase Noise (10K Offset)

-115 dBC/Hz, typical when f ≥ 1MHz, V ≥ 0.1Vpp

Square Specification


1μHz to 25MHz

Rise/Fall time

< 10ns


< 2%

Variable Duty Cycle

20% to 80% (to 10MHz)

40% to 60% (to 25MHz)


1% of period + 5ns (@ 50% duty)

Jitter (RMS)

1ns + 100ppm of period

Ramp, Triangle


1μHz to 200kHz


< 0.25% of peak output


0.0% ~ 100.0%

Pulse Specification


500μHz to 10MHz

Pulse width

20ns minimum

10ns res. (period ≤ 10s)

Variable Edge Time

<10ns to 100ns



Jitter (RMS)

300ps + 0.1ppm of period

Noise Specification


20MHz typical



1μHz to 10MHz


2 to 256K


14 bits (including sign)

Sample Rate


Min Rise/Fall Time

30ns typical


<0.1% of peak output

Settling Time

<250ns to 0.5% of final value


6ns + 30ppm

Non-volatile Memory

4 waveforms * 256K Points

Common Characteristic Specifications

Frequency Resolution


Amplitude Range

10mVpp to 10Vpp in 50Ω

20mVpp to 20Vpp in Hi-Z

Amplitude Accuracy1,2 (@1KHz)

±1% of setting ±1mVpp

Amplitude Units

Vpp, Vrms, dBm

Amplitude Resolution

4 digits

DC Offset Range (Peak AC + DC)

±5V in 50Ω

±10V in Hi-Z

DC Offset Accuracy1,2

±2% of offset setting

±0.5% of amplitude setting

DC Offset Resolution

4 digits

Main Output Impedance

50Ω typical

Main Output Isolation

42Vpk maximum to earth

Main Output Protection

Short-circuit protected; overload automatically disables main output

Internal Frequency Reference Accuracy5

±10ppm in 90 days

±20ppm in 1 year

External Frequency Reference Standard/Option


External Frequency Input:

Lock Range



Lock Time

10MHz ± 500Hz

100mVpp ~ 5Vpp

1KΩ typical, AC coupled

<2 s

External Lock Range


Frequency Output:



632mVpp (0dBm), typical

50Ω typical, AC coupled

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