Tektronix AFG2021 Technical Reference
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Tektronix AFG2021 Technical Reference

Arbitrary function generator specifications and performance verification
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AFG2021
xx
Arbitrary Function Generator
Specifications and Performance Verification
ZZZ
Technical Reference
www.tektronix.com
*P077058801*
077-0588-01

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Summary of Contents for Tektronix AFG2021

  • Page 1 AFG2021 Arbitrary Function Generator Specifications and Performance Verification Technical Reference www.tektronix.com *P077058801* 077-0588-01...
  • Page 2 Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material.
  • Page 3 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

  • Page 5: Table Of Contents

    Performance tests ..................... Test record ..................... Frequency/Period test ..................Amplitude test....................DC offset test ....................AC flatness test....................Harmonics distortion test ..................Total harmonic distortion test ................Spurious test ....................Rise-Fall time test..................... AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 6 Figure 6: DC offset tests ..................Figure 7: AC flatness tests..................Figure 8: Harmonic distortion tests................Figure 9: Total harmonic distortion tests ............... Figure 10: Spurious tests ..................Figure 11: Rise-Fall time tests ................... AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 7 Table 14: Export control ..................Table 15: Environmental ..................Table 16: System characteristics................. Table 17: Error codes ..................... Table 18: Performance test items ................Table 19: Test equipment ..................Table 20: Series Performance Test Record ..............AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 8: General Safety Summary

    Do not operate in an explosive atmosphere. Keep product surfaces clean and dry. Provide proper ventilation. Refer to the manual's installation instructions for details on installing the product so it has proper ventilation. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 9 WARNING indicates an injury hazard not immediately accessible as you read the marking. CAUTION indicates a hazard to property including the product. The following symbol(s) may appear on the product: AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 10 General safety summary AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 11: Service Safety Summary

    Use care when servicing with power on. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. To avoid electric shock, do not touch exposed connections. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 12 Service safety summary AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 13: Preface

    This manual focuses on the performance verification of the arbitrary function generator. See the following list for other documents supporting the instrument. All documents except the Online Help are on the AFG2021 Arbitrary Function Generator Documentation CD-ROM that ship with instrument.

  • Page 14: Manual Conventions

    Safety Symbols and terms related to safety appear in the Safety Summary near the beginning of this manual. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 15: Specifications

    Specifications These specifications apply to the AFG2021 Arbitrary Function Generator. All specifications are guaranteed unless labeled “typical”. Typical specifications are provided for your convenience but are not guaranteed. Specifications that are check marked with the symbol are checked directly (or indirectly) in the Performance Verification section.

  • Page 16: Table 3: Frequency/Period

    Continuous mode 0 ps to period Triggered/Gated Burst mode 0 ps to period – [pulse width + 0.8 * (leading edge time + trailing edge time)] Resolution 10 ps or 8 digits AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 17: Table 6: Amplitude

    Table 8: Internal noise add Characteristic Description Range 0% to 50% of amplitude setting Resolution When Noise Add In is selected, the amplitude of the signal will become half of the amplitude. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 18: Table 9: Output Characteristics

    , symmetry: 100%) ≤ 0.1% of peak output at 10% to 90% of amplitude range Symmetry 0% to 100% Arbitrary Rise time/fall time, typical ≤ 20 ns Jitter (rms), typical 4 ns AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 19: Table 10: Modulation

    Sine, Square, Ramp, Noise, and Arb waveforms Internal modulating frequency 2 mHz to 50.0 kHz Deviation range 0.0% to 50.0% of pulse period Sweep Type Linear or Logarithmic Start/stop frequency 1 μHz to 20 MHz Sweep/hold/return time AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 20: Input And Output Specifications

    Impedance 10 kΩ Slope Positive/negative selectable Trigger delay 0.0 ns to 85.0 s Resolution 100 ps or 5 digits Jitter (rms), typical <500 ps (Trigger input to Signal output at Burst mode) AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 21: General Specifications

    (At 1 V amplitude) At 20 MHz: < –110 dBc/Hz at 10 KHz offset Table 15: Environmental Characteristic Description Temperature range Operating 0 °C to +50 °C Non operating -30 °C to +70 °C AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 22: Figure 1: Afg2021 Dimensions

    Net weight 2.87 kg (6.3 lbs), approximate Dimensions (overall) Height 104.24 mm (4.10 in) Width 241 mm (9.52 in) Depth 419.1 mm (16.50 in), including handle and rear boot Figure 1: AFG2021 dimensions AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 23: Performance Verification

    Observe the following prerequisites before starting the procedures: Power on the instrument and allow a 20 minute warm-up before doing this procedure The instrument must be operating at an ambient temperature between +0 °C and +50 °C. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 24 4. Press any front-panel button to exit the calibration. NOTE. Do not turn off the power while executing calibration. If the power is turned off during calibration, data stored in internal nonvolatile memory may be lost. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 25: Error Codes

    Output gain failure 2401 x3dB attenuator failure 2403 x6dB attenuator failure 2405 x10dB attenuator failure 2407 x20dB 1 attenuator failure 2409 x20dB 2 attenuator failure 2411 Filter failure 2501 Sine Flatness failure AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 26: Performance Tests

    Total Harmonic Distortion THD (Total Harmonic Distortion) Test (See page 29, Total harmonic distortion test.) Spurious Test Spurious (See page 32, Spurious test.) Rise-Fall Time Test Rise-Fall Time (See page 34, Rise-Fall time test.) AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 27: Table 19: Test Equipment

    91 cm 012-0482-00 BNC terminator 50 Ω, ±1 Ω, 2 W, DC to Tektronix part number Signal termination 1 GHz, BNC 011-0049-02 Attenuator 50 Ω, x10, BNC Tektronix part number Signal attenuation 011-0059-03 AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 28: Test Record

    13. Tek Connector SMA 50 Ω, DC ≥ 18 GHz Tektronix TCA-SMA Signal interconnection Test record Photocopy the test records and use them to record the performance test results for your instrument. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 29: Table 20: Series Performance Test Record

    Frequency 5.00 MHz Reference - 0.30 dB Reference + 0.30 dB Frequency 15.00 MHz Reference - 0.30 dB Reference + 0.30 dB Frequency 20.00 MHz Reference - 0.30 dB Reference + 0.30 dB AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 30 Sine 20.0 kHz 20 kHz 40 kHz 60 kHz 80 kHz 100 kHz 120 kHz 140 kHz CH1 reading (dBm) reading - reference (A (dBc) = 10 Bn/20 Limit < 0.2% AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 31 - - - - - Fall Time Amplitude: 1.0 Vpp 18 ns - - - - - Rise Time Amplitude: 10.0 Vpp 18 ns - - - - - Fall Time Amplitude: 10.0 Vpp 18 ns AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 32: Frequency/Period Test

    Push the Channel On/Off button to turn it on. 4. Check that reading of the Frequency Counter is between 0.999999 MHz and 1.000001 MHz. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 33: Amplitude Test

    / Measurement Ω Ω) Measurement (reading of the DMM) Ω Examples 50.50 Ω 1.0050 (= 2 / (1 + 50 / 50.50)) 49.62 Ω 0.9962 (= 2 / (1 + 50 / 49.62)) AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 34: Figure 4: Amplitude Tests

    2.000 Vrms Vrms (2.000 × CF ± 0.0204) Vrms Sine 1.000 kHz 2.500 Vrms Vrms (2.500 × CF ± 0.0254) Vrms Sine 1.000 kHz 3.500 Vrms Vrms (3.500 × CF ± 0.0354) Vrms AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 35: Dc Offset Test

    4. Set up the arbitrary function generator as follows: a. Push the More waveform button on the front panel. b. Push the More Waveform Menu bezel button. c. Push the DC bezel button. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 36: Ac Flatness Test

    Push the Frequency bezel button (it will turn dark when activated) and use the numeric keypad or general purpose knob to set the frequency to 100.0000 kHz. d. Push the button on the front panel to return to the top menu. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 37 1.00 MHz Reference ± 0.15 Sine + 4.0 dBm 5.00 MHz Reference ± 0.30 Sine + 4.0 dBm 10.00 MHz Reference ± 0.30 Sine + 4.0 dBm 20.00 MHz Reference ± 0.30 AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 38: Harmonics Distortion Test

    1.00 Vpp. Check that the Channel On/Off front panel button LED is lit. If it is not lit, then the channel output is off. Push the Channel On/Off button to turn it on. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 39: Total Harmonic Distortion Test

    figure. Figure 9: Total harmonic distortion tests 2. Set up the arbitrary function generator as follows: a. Push the Sine button on the front panel. b. Push the Frequency/Period/Phase Menu bezel button. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 40 B3 = B4 = B5 = B6 = B7 = An - A1 (dBc) Cn = 10 Bn/20 C1 = 1 C2 = C3 = C4 = C5 = C6 = C7 = AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 41 When all the harmonic components are -62 dBm or less, the calculation of THD can be skipped because it is THD < 0.2%. 8. Verify that the THD is less than 0.2%. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 42: Spurious Test

    3. Set the center frequency of the spectrum analyzer to 10 MHz. Other settings are shown in the following table. 4. Set the Ref Level of the spectrum analyzer to 8 dBm. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 43 10 MHz 20 MHz 20 kHz < -50 dBc 300 MHz 600 MHz 20 kHz 20.00 MHz 10 MHz 20 MHz 20 kHz < -50 dBc 300 MHz 600 MHz 20 kHz AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

  • Page 44: Rise-Fall Time Test

    Check that the Channel On/Off front panel button LED is lit. If it is not lit, then the channel output is off. Push the Channel On/Off button to turn it on. AFG2021 Arbitrary Function Generator Specifications and Performance Verification...
  • Page 45 Limit Square 10.00 MHz 0.0 V 1.0 Vpp 200 mV/div 5 ns/div ≤ 18 ns Square 10.00 MHz 0.0 V 10.0 Vpp 200 mV/div 5 ns/div ≤ 18 ns with x10 attenuator AFG2021 Arbitrary Function Generator Specifications and Performance Verification...

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