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AFG2021

TektronixFunction

The Tektronix AFG2021 is a 20 MHz Arbitrary / Function Generator designed to provide high-performance signal generation in an affordable and compact package. Featuring a 250 MS/s sample rate, 14-bit vertical resolution, and 1 MS waveform memory, it enables the creation of highly precise standard and complex arbitrary waveforms.

Arbitrary Waveform GenerationSignal Generation

Specifications

General

ParameterValue
InterfacesUSB Host (front), USB Device (rear, USBTMC), LAN (10/100 Base-T, LXI Class C)
Display3.5-inch TFT Color LCD, 320 × 240 resolution
Setup Memory Capacity10 setups
Warm-up Time20 minutes

Physical

ParameterValue
Power Supply100 V to 240 V AC (50/60 Hz), 115 V AC (400 Hz), < 120 W power consumption
Operating Temperature0 to +50 °C
Dimensions (W×H×D)242.4 mm × 104.2 mm × 374.2 mm
Weight3.1

Channel Characteristics

ParameterValue
Number of Channels1
Operating ModesContinuous, Modulation, Sweep, Burst

Waveform Generation

ParameterValue
Standard WaveformsSine, Square, Pulse, Ramp, Noise, DC, Sin(x)/x, Gaussian, Lorentz, Exponential Rise, Exponential Decay, Haversine
Sampling Rate250 MS/s
Vertical Resolution14 bits
Minimum Arbitrary Waveform Length2 points
Maximum Arbitrary Waveform Length1,000,000 points (1 MS)
Non-Volatile Memory Capacity4 waveforms (each up to 1M points)

Frequency Specifications

ParameterValue
Sine Frequency Range1 µHz to 20 MHz
Square Frequency Range1 µHz to 10 MHz
Pulse Frequency Range1 mHz to 10 MHz
Ramp/Triangle Frequency Range1 µHz to 200 kHz
Noise Bandwidth20 MHz (-3 dB)
Arbitrary Waveform Frequency Range1 mHz to 10 MHz
Frequency Resolution1 µHz
Frequency Accuracy±1 ppm (0 °C to 50 °C)
Aging Rate±1 ppm per year

Sine Wave Distortion and Purity

ParameterValue
Harmonic Distortion (10 Hz to 20 kHz)< -70 dBc (at 1 Vp-p)
Harmonic Distortion (20 kHz to 1 MHz)< -60 dBc (at 1 Vp-p)
Harmonic Distortion (1 MHz to 5 MHz)< -50 dBc (at 1 Vp-p)
Harmonic Distortion (5 MHz to 20 MHz)< -40 dBc (at 1 Vp-p)
Total Harmonic Distortion (THD)< 0.2% (10 Hz to 20 kHz, 1 Vp-p)
Spurious Noise (Non-Harmonic)< -50 dBc (1 Vp-p, DC to 20 MHz)
Phase Noise< -110 dBc/Hz at 10 kHz offset (10 MHz, 0 dBm)
Sine Wave Jitter (RMS)< 100 ps (typical)

Pulse & Square Wave Characteristics

ParameterValue
Rise/Fall Time≤ 18 ns
Overshoot< 5%
Pulse Duty Cycle Range0.1% to 99.9% (subject to width limits)
Pulse Width Range30.00 ns to 999.9 s
Pulse Width Resolution10 ps or 5 digits
Pulse Jitter (RMS)< 500 ps (typical)

Amplitude and Output Characteristics

ParameterValue
Amplitude Range (into 50 Ω, ≤10 MHz)10 mVp-p to 10 Vp-p
Amplitude Range (into 50 Ω, >10 MHz to 20 MHz)10 mVp-p to 5 Vp-p
Amplitude Range (Open Circuit, ≤10 MHz)20 mVp-p to 20 Vp-p
Amplitude Range (Open Circuit, >10 MHz to 20 MHz)20 mVp-p to 10 Vp-p
Amplitude Accuracy±(1% of setting + 1 mVp-p) at 1 kHz, 50 Ω load
Amplitude Resolution0.1 mVp-p, 0.1 mVrms, 1 mV, 1 µV, or 4 digits
Amplitude UnitsVp-p, Vrms, dBm
DC Offset Range (into 50 Ω)±5 Vpk (limit: |Voffset| + Vp-p/2 ≤ 5 V)
DC Offset Range (Open Circuit)±10 Vpk (limit: |Voffset| + Vp-p/2 ≤ 10 V)
DC Offset Accuracy±(1% of |setting| + 5 mV + 0.5% of amplitude)
Output Impedance50 Ω
Output ProtectionShort-circuit protected
Main Output Connector TypeBNC (front panel)

Modulation, Sweep, and Burst

ParameterValue
Modulation TypesAM, FM, PM, FSK, PWM
Internal Modulation SourcesSine, Square, Ramp, Noise, Arbitrary
AM Modulation Depth0.0% to 120.0%
FM Deviation Range1 µHz to 10 MHz
PM Phase Deviation Range0.0° to 180.0°
FSK Keying Rate2 mHz to 1 MHz
PWM Duty Cycle Deviation0.0% to 50.0% of pulse period
Sweep TypeLinear, Logarithmic
Sweep Time Range1 ms to 300 s
Burst TypeTriggered, Gated
Burst Count Range1 to 1,000,000 cycles, or Infinite

Clock, Trigger, and Synchronization

ParameterValue
External Reference Input Frequency Range10 MHz ± 10 kHz
External Reference Input Level100 mVp-p to 5 Vp-p
External Reference Output Frequency10 MHz
External Reference Output Level1.2 Vp-p (typical into 50 Ω)
Trigger Input Voltage LevelTTL compatible (Min high 2.0 V, Max low 0.8 V)
Trigger Output Voltage LevelTTL compatible (into ≥ 10 kΩ)
Sync Output LevelTTL compatible (into 50 Ω)
Sync Output Impedance50 Ω

Connectivity and Programming

ParameterValue
Programming Command LanguageSCPI
External Modulation Input ConnectorBNC (rear panel)

Physical and Environmental

ParameterValue
Display Type and Size3.5-inch TFT Color LCD
Display Resolution320 × 240 pixels
Power ConsumptionLess than 120 W (typical 30 W)
Storage Temperature Range-30 °C to +70 °C
Operating Humidity Range< 80% R.H. (0 °C to +40 °C), < 60% R.H. (+40 °C to +50 °C)

Compliance and Standards

ParameterValue
Calibration Interval1 year (recommended)

Performance

ParameterValue
Sine Wave Flatness (< 5 MHz)±0.15 dB (into 50 Ω, 1 Vp-p, relative to 1 kHz)
Sine Wave Flatness (5 MHz to 20 MHz)±0.3 dB (into 50 Ω, 1 Vp-p, relative to 1 kHz)

Modulation

ParameterValue
Internal Modulation Frequency (AM, FM, PM, PWM)2 mHz to 50 kHz
Internal FSK Rate2 mHz to 1 MHz

Inputs & Outputs

ParameterValue
External Modulation Input Impedance10 kΩ
External Modulation Input Range±1.0 V full scale
External Modulation BandwidthDC to 25 kHz
Trigger Input Impedance10 kΩ
Trigger Input Minimum Pulse Width100 ns
Reference Clock Input Impedance1 kΩ, AC coupled
Reference Clock Output Impedance50 Ω, AC coupled

Environmental

ParameterValue
Operating AltitudeUp to 3,000 m (10,000 ft)

Compliance

ParameterValue
Safety ComplianceUL 61010-1, CAN/CSA-C22.2 No. 61010-1, EN 61010-1, IEC 61010-1
EMC ComplianceEN 61326-1:2006, Class A

Frequency

ParameterValue
Phase Range-180.00° to +180.00°
Phase Resolution0.01°

Waveform Characteristics

ParameterValue
Ramp Linearity≤0.1% of peak output (at 1 kHz, 100% amplitude, 10% to 90% symmetry)
Ramp Symmetry Range0.0% to 100.0%
Ramp Symmetry Resolution0.1%
Square Wave Duty Cycle50% (fixed)

Sweep

ParameterValue
Sweep Trigger SourcesInternal, External, Manual

Burst

ParameterValue
Burst Trigger SourcesInternal, External, Manual

Interfaces

ParameterValue
LXI ComplianceLXI Class C, Version 1.3

Technology

Direct Digital Synthesis (DDS)

Applications

Electronic Test and Measurement