Keysight U2701A User Manual
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Keysight U2701A User Manual

Keysight U2701A User Manual

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Keysight U2701A/U2702A
USB Modular Oscilloscopes
User's Guide

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Summary of Contents for Keysight U2701A

  • Page 1 Keysight U2701A/U2702A USB Modular Oscilloscopes User’s Guide...

  • Page 4: Safety Information

    Federal DOCUMENT IS PROVIDED “AS IS,” Acquisition Regulation (“FAR”) 2.101. AND IS SUBJECT TO BEING © Keysight Technologies 2009 - 2017 Pursuant to FAR 12.212 and 27.405-3 CHANGED, WITHOUT NOTICE, IN No part of this manual may be and Department of Defense FAR FUTURE EDITIONS.

  • Page 5: Safety Symbols

    Protective earth (ground) terminal Out position of a bi-stable push control Frame or chassis (ground) terminal In position of a bi-stable push control CAT I Equipotentiality Category I Overvoltage Protection Equipment protected throughout by double insulation or reinforced insulation Keysight U2701A/U2702A User’s Guide...

  • Page 6: General Safety Information

    – Do not use the equipment if it does not operate properly. Have the equipment inspected by qualified service personal. If necessary, return the equipment to Keysight for service and repair to ensure that safety features are maintained. – Always disconnect the probes from the measuring circuit before CAUTION disconnecting the adapter.

  • Page 7: Environmental Conditions

    Operating Humidity 20 to 85% RH (non-condensing) Storage Humidity 5 to 90% RH (non-condensing) The Keysight U2701A/U2702A are safety-certified in compliance with the CAUTION following safety and EMC requirements: – IEC 61010-1: 2001/EN 61010-1: 2001 (2nd edition) – CAN/CSA-C22.2 No. 61010-1-04 –...

  • Page 8: Regulatory Markings

    Cet appareil ISM est conforme a la this electrical or electronic product in norme NMB-001 du Canada. domestic household waste. The CSA mark is a registered trademark of the Canadian Standards Association. Keysight U2701A/U2702A User’s Guide...

  • Page 9: Waste Electrical And Electronic Equipment (Weee) Directive 2002/96/Ec

    To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http://about.keysight.com/en/companyinfo/environment/takeback.shtml for more information. Sales and Technical Support To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/usbscope (product-specific information and support, software and documentation updates) –...
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  • Page 11: Table Of Contents

    .........43 Keysight U2701A/U2702A User’s Guide...
  • Page 12 ..........76 Characteristics and Specifications Keysight U2701A/U2702A User’s Guide...
  • Page 13 ........78 Figure 2-22 Panning a waveform ......79 Keysight U2701A/U2702A User’s Guide...
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  • Page 15 ..62 Table 2-9 List of Acquisition Modes ..... . .71 Keysight U2701A/U2702A User’s Guide...
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  • Page 17 L-Mount Kit Installation Soft Front Panel and User Interface Descriptions Chapter 1 provides an overview of the U2701A and U2702A USB modular oscilloscopes, the product outlook, and product dimensions. This chapter also includes information on checklist, system requirements, and installation of...

  • Page 18: Getting Started

    The U2701A/U2702A also feature a large memory up to 32 Mpts and high sampling rate up to 500 M/S/ch. This two features allowing a longer capture time, as well as enabling more signals to be captured and analyzed in-depth.
  • Page 19 30 Vrms maximum. For high voltage measurement up to CAT1 300 Vrms, users must install the L-mount kit on the U2701A/U2702A. Before plugging into the instrument chassis, ensure that the L-Mount kit installed on your modular oscilloscope is screwed to the instrument chassis for chassis grounding...

  • Page 20: Product Overview

    Getting Started Product Overview Product Outlook Top View Front Bumper Rear Bumper Front View BNC Ground USB Indicator Power Indicator Channel 1 Input Channel 2 Input External Trigger Rear View Power Inlet 55-pin Connector USB Inlet Keysight U2701A/U2702A User’s Guide...

  • Page 21: Product Dimension

    Getting Started Product Dimension With Front and Rear Bumper Without Front and Rear Bumper Top View Top View 175.00 mm 180.00 mm Front View Front View Rear View Rear View Keysight U2701A/U2702A User’s Guide...

  • Page 22: Package Contents Checklist

    4 Power Cord 4 USB Standard A to Mini-B Interface Cable 4 2 x 10:1 Passive Probe 150 MHz 1.2m (only applicable for U2701A), N2862A 4 2 x 10:1 Passive Probe 300 MHz 1.2m (only applicable for U2702A), N2863A 4 L-Mount Kit (used with modular instrument chassis)

  • Page 23: Installations And Configurations

    Keysight Measurement Manager, follow the step-by-step instructions as shown in the Keysight USB Modular Products and Systems Quick Start Guide. – If you do not wish to specifically use the U2701A/U2702A USB modular NOTE oscilloscopes with the Keysight Measurement Manager, and use the modular oscilloscope with Keysight VEE, Labview or Microsoft Visual Studio only, you can skip steps E and H in the following flowchart.

  • Page 24: L-Mount Kit Installation

    Getting Started L-Mount Kit Installation The L-Mount kit is to be installed on your U2701A/U2702A USB modular oscilloscopes. The following instructions describe the simple procedure of installing the L-Mount kit and your modular oscilloscopes into the chassis. 1 Unpack the L-Mount kit from the packaging.
  • Page 25 5 Your modular oscilloscope is ready to be plug into an instrument chassis. Using the Philip screw driver, screw the L-Mount kit installed on your modular oscilloscope to the instrument chassis (for protective grounding purpose). Keysight U2701A/U2702A User’s Guide...

  • Page 26: Modular Products Chassis

    Modular Products Chassis 55-Pin Backplane Connector Pin Configuration The 55-pin backplane connector is used when your module is slotted into the U2781A USB modular instrument chassis. For more details, refer to the Keysight U2781A USB Modular Instrument Chassis User’s Guide. VBUS USB_D–...

  • Page 27: Soft Front Panel And User Interface Descriptions

    Getting Started Soft Front Panel and User Interface Descriptions Keysight U2701A/U2702A User’s Guide...

  • Page 28: Descriptions Of The User Interface

    Displays the graph update rate in frame/sec. Video Sampling Rate Displays video sampling rate (in number of samples per second taken from a continuous signal) Calibration Delta Temp. indicator Displays the calibration delta temperature of the connected device Keysight U2701A/U2702A User’s Guide...

  • Page 29: Measurements

    Keysight U2701A/U2702A USB Modular Oscilloscopes User’s Guide Scope Features and Functions Analog Controls Trigger Controls Measurements and Cursors Controls FFT & Math Controls Options Controls AutoScale and Run/Stop buttons Pan and Zoom...

  • Page 30: Scope Features And Functions

    Vertical control is used to change the vertical scale and position of the waveform. This section of the manual describes the vertical controls provided in the user interface. Figure 2-1 Soft front panel vertical system controls Keysight U2701A/U2702A User’s Guide...
  • Page 31 Click on the channel buttons on the vertical control panel or on the toolbar to toggle the channel on or off. – To toggle channel on, click on (these images are in off mode). – To toggle channel off, click on (these images are in on mode). Keysight U2701A/U2702A User’s Guide...

  • Page 32: Channel Options

    Click on the Channel Options button and select AC Coupling from the options list. When AC coupling is not selected, the oscilloscope is always set to DC coupling NOTE mode by default. Keysight U2701A/U2702A User’s Guide...

  • Page 33: Figure 2-2 The Waveform Before Inversion

    Click on the channel options button and select Invert from the options list. Figure 2-2 Figure 2-3 show the changes before and after conversion. Figure 2-2 The waveform before inversion Keysight U2701A/U2702A User’s Guide...

  • Page 34: Figure 2-3 The Waveform After Inversion

    Click on the Channel Options button and select BW Limit from the options list. The LowPass cutoff is at 25 MHz. When the BW limit control is not selected, the oscilloscope is set to full NOTE bandwid th. Keysight U2701A/U2702A User’s Guide...

  • Page 35: Probe Attenuation Factors And Its Corresponding

    Probe attenuation factors and its corresponding settings. Probe attenuation factors and correspond ing settings 10:1 100:1 100X Volt/Div Control The Volt/Div control sets the sensitivity of the channel. You can select the channel sensitivity from the drop-down list. Drop-down list Keysight U2701A/U2702A User’s Guide...
  • Page 36 Alt+Minus to increase the sensitivity of the channel. – Click on the or press Alt+Plus to decrease the sensitivity of the channel. Offset Offset is used to configure the position of the ground relative to the center of the display. Keysight U2701A/U2702A User’s Guide...

  • Page 37: Horizontal Controls

    Changing the horizontal scale causes the waveform to expand or contract around the screen center. Figure 2-4 Soft front panel horizontal system controls Horizontal control provides functions of time base, delay, and mode for the horizontal scale adjustment. Keysight U2701A/U2702A User’s Guide...
  • Page 38 Trigger point To adjust the delay time, – Click on or press Crtl+Left to increase the delay time. – Click on or press Crtl+Right to decrease the delay time. Keysight U2701A/U2702A User’s Guide...

  • Page 39: Horizontal Mode Functions

    500 ms/div limit, it will be set to 500 ms/div when the Roll mode is entered. Use Roll mode on low-frequency waveforms to yield a display much like a strip chart recorder. It allows the waveform to roll across the display. Keysight U2701A/U2702A User’s Guide...
  • Page 40 2 Center the signal on the display using the channel 1 and 2 Offset knobs. To expand the signal for convenient viewing, use the channel 1 and 2 volts/div drop-down list. In XY mode, the time base, delay and triggering functions are disabled. The NOTE Normal trigger mode is enabled. Keysight U2701A/U2702A User’s Guide...

  • Page 41: Trigger Controls

    After it detects a trigger, the oscilloscope continues to obtain enough data so it can draw the waveform on the display. Figure 2-5 Soft front panel of the Trigger Controls Keysight U2701A/U2702A User’s Guide...

  • Page 42: Trigger Modes

    There are three types of trigger source: Channel 1, Channel 2 and External. The external trigger source can be used as a source in several trigger types. The trigger source will be the analog channel available on your oscilloscope. Keysight U2701A/U2702A User’s Guide...

  • Page 43: Trigger Settings

    Either Trigger on either edge Coupling Sets the input coupling to DC Sets the input coupling to AC LF-Reject Sets the input coupling to low frequency reject HF-Reject Sets the input coupling to high frequency reject Keysight U2701A/U2702A User’s Guide...
  • Page 44 5 Select the desired slope on the Edge Trigger Settings panel. – To trigger both edges of a clock, use Alternating edge mode. NOTE – To trigger on any activity of a selected source, use Either edge mode. Keysight U2701A/U2702A User’s Guide...

  • Page 45: Table 2-2 Table

    2 On the Trigger Settings panel, click on the Pulse Width button. 3 Select the trigger level by adjusting the knob or by clicking on 4 Select the desired polarity on the Pulse Width Trigger Settings panel. Keysight U2701A/U2702A User’s Guide...

  • Page 46: Tv Trigger Menu

    All Fields Trigger on the rising edge of the first pulse in the vertical sync interval (not available in Generic Mode) All Lines Trigger on all horizontal sync pulses Custom Line Trigger on selected line number Keysight U2701A/U2702A User’s Guide...

  • Page 47: Table 2-4 Table

    Line:Field 1 and Line:Field 2 are used to indicate where the counting starts. For an interlaced video signal, the counting starts from the rising edge of the first vertical serration pulse of Field 1 and/or Field 2. Keysight U2701A/U2702A User’s Guide...

  • Page 48: Trigger Options

    HF-Reject coupling places a low-pass filter with the 3 dB point at 35 kHz. HF-Reject removes high-frequency noise such as AM or FM broadcast stations from the trigger path. Keysight U2701A/U2702A User’s Guide...

  • Page 49: Measurements And Cursors Controls

    The Measurements & Cursors button is located on the toolbar of the soft front panel. Click on the to activate the automatic measurements and cursors system. Figure 2-6 Soft front panel of the Measurements & Cursors Controls Keysight U2701A/U2702A User’s Guide...

  • Page 50: Markers

    Under cursors measurement, there are four available sources: – Channel 1 – Channel 2 – Math Func. – FFT Math Func. and FFT sources are only available when the functions are activated on the FFT & Math control panel. Keysight U2701A/U2702A User’s Guide...
  • Page 51 3 Proceed to select your desired measurements on the Measurements panel. 4 Markers will be automatically placed on the waveform to indicate the measurements made. 5 Browse the measurement results on the Measurement Results panel to view different markers for different measurements. Keysight U2701A/U2702A User’s Guide...

  • Page 52: Figure 2-7 Auto Marker Automatically Marks The Maximum Value

    (horizontal line in orange color) automatically marks the maximum value of the waveform displayed when Maximum measurement type is selected. Figure 2-7 Auto marker automatically marks the maximum value of the waveform when Maximum measurement is selected Keysight U2701A/U2702A User’s Guide...
  • Page 53 To adjust the first cursor (X1 or Y1), left-click and drag the cursor on the graph. To adjust the second cursor (X2 or Y2), right-click and drag the cursor on the graph. Delta measurements of the Cursors can be obtained on the Cursors panel. Keysight U2701A/U2702A User’s Guide...

  • Page 54: Measurements Controls

    Scope Features and Functions Measurements Controls The U2701A/ U2702A modular oscilloscopes offers 26 types of automatic measurements. You can select any of the following predefined measurements to measure the waveforms. Figure 2-8 Automatic measurements on the Measurements & Cursors panel...

  • Page 55: Table 2-8 Table

    Measures the time difference from the selected edge on Channel 1 and the selected edge on Channel 2 closest to the trigger reference point at the middle threshold points on the waveforms Phase Shift The calculated phase shift from Channel 1 to Channel 2 (in degrees) Keysight U2701A/U2702A User’s Guide...
  • Page 56 Takes VRMS (DC) for one cycle CREST Defined as Peak/RMS (Maximum/VRMS (DC)) Measure a flat top voltage of a waveform Std Deviation Standard Deviation is an RMS measurement across the full screen with the DC component removed. Keysight U2701A/U2702A User’s Guide...

  • Page 57: List Of Time Measurements And Voltage Measurements For Fft

    When you make an X at Max or X at Min measurement on a math FFT function, the resultant units will be in Hertz. No other time related automatic measurement can be made on the FFT math function. Use the cursors to make other measurements on FFT Keysight U2701A/U2702A User’s Guide...
  • Page 58 Go to your desired measurement and double click on the icon. 4 Select the measurement and press Enter Click on the desired measurement icon and press Enter. To select more than one measurement, press Ctrl and click on the desired measurements icons then press Enter. Keysight U2701A/U2702A User’s Guide...

  • Page 59: Figure 2-9 Measurements Panel And Measurements Results Panel

    To delete a measurement, select the measurement that you would like to remove from the Measurements Results panel and click on the button. To delete all measurements, click on the header of the delete column, Remove. Keysight U2701A/U2702A User’s Guide...

  • Page 60: Fft & Math Controls

    Scope Features and Functions FFT & Math Controls The FFT & Math button is located on the toolbar of the soft front panel. Figure 2-10 Soft front panel of the FFT & Math controls. Keysight U2701A/U2702A User’s Guide...

  • Page 61: Fast Fourier Transform Function

    The readout for the horizontal axis changes from time to frequency (Hertz) and the vertical readout changes from volts to dB. Figure 2-11 FFT controls When the FFT source is channel 1 or channel 2, FFT units will be displayed in NOTE dBV. Keysight U2701A/U2702A User’s Guide...

  • Page 62: Fft Settings

    Horizontal scaling is automatically calculated. It will span the entire range of spectrum horizontally for best-fit display. Vertical Scale option allows you to scale your spectrum vertically. Vertical Offset allows you to adjust the vertical offset of your spectrum. Keysight U2701A/U2702A User’s Guide...
  • Page 63 5 Set the vertical scale factors for the spectrum in the Scale property box. Then, set the offset of the spectrum by using the knob or the arrow keys to adjust the offset value. Keysight U2701A/U2702A User’s Guide...

  • Page 64: Figure 2-12 Waveform Obtained With Hanning Window Selected

    Scope Features and Functions Figure 2-12 Waveform obtained with Hanning window selected Keysight U2701A/U2702A User’s Guide...
  • Page 65 Find Next Peak button. You will see an indicator on your spectrum pointing at the next highest peak of your spectrum as shown Figure 2-14. 5 To get the first peak once again, click on the Find First Peak button. Keysight U2701A/U2702A User’s Guide...

  • Page 66: Figure 2-13 First Peak

    Scope Features and Functions Figure 2-13 First Peak Figure 2-14 Next Peak Keysight U2701A/U2702A User’s Guide...

  • Page 67: Math Function

    1. If either Channel 1 or Channel 2 is positive and it is divided by zero, the result will be in positive infinity. If either Channel 1 or Channel 2 is negative and it is divided by zero, the result will be in negative infinity. Keysight U2701A/U2702A User’s Guide...
  • Page 68 4 Click on the Active Reverse Function checkbox to reverse the channels' computation if desired. This allows you to flip the order of operation for the channels. Keysight U2701A/U2702A User’s Guide...

  • Page 69: Figure 2-15 Acquired Waveform Using Subtract Function

    Scope Features and Functions Figure 2-15 Acquired waveform using Subtract function Keysight U2701A/U2702A User’s Guide...

  • Page 70: Options Controls

    Scope Features and Functions Options Controls To display the Acquisition Mode menu and Display Options menu, click on the button on the toolbar on the soft front panel. Figure 2-16 Soft front panel of the Options Controls Keysight U2701A/U2702A User’s Guide...

  • Page 71: Acquisition Mode

    Scope Features and Functions Acquisition Mode The figure below shows the Acquisition Mode on the soft front panel. The U2701A/U2702A scopes have the following acquisition modes. Table 2-9 List of Acquisition Modes Menu Settings Comments Mode Normal Normal acquisition mode is for most waveforms with normal decimating at slower sweep speeds, no averaging.

  • Page 72: Display Options

    The three types of display options offered are: – Vector connects the sample points by using digital interpolation. – Sin x/x interpolation is used to expand the horizontal signal resolution when the horizontal scale is set to 100 ns or faster. Keysight U2701A/U2702A User’s Guide...

  • Page 73: Figure 2-17 The Waveform Before Interpolation

    To perform interpolation using sin(x)/x filter to maintain the linearity of the waveform, enable the Sin x/x interpolation option. Once enabled, a smoother waveform will be displayed. Figure 2-17 The waveform before interpolation Figure 2-18 The waveform after interpolation Keysight U2701A/U2702A User’s Guide...
  • Page 74 Miscellaneous menu contains an option to display tooltips with keyboard shortcuts. When this option is enabled, by hovering the mouse cursor over most of the controls, a tooltip with the appropriate keyboard shortcut to access the particular function will appear. Keysight U2701A/U2702A User’s Guide...

  • Page 75: Autoscale And Run/Stop Buttons

    Run/Stop Button The Run/Stop button is used to manually start or stop the oscilloscope’s acquisition system from acquiring waveform data. – Click on to start acquiring waveform. – Click on to stop acquiring waveform. Keysight U2701A/U2702A User’s Guide...

  • Page 76: Pan And Zoom

    You may also use the drop-down list to select the zoom value. 4 Alternatively, you can use the zoom reference panel above the waveform graph display to zoom in and out of the graph. Keysight U2701A/U2702A User’s Guide...

  • Page 77: Panel

    Figure 2-19 Zoom reference panel 5 To zoom in, right-click on the zoom reference panel and select Zoom In from the menu. Repeat the same action to further increase the zoom level. Figure 2-20 Zoom In Keysight U2701A/U2702A User’s Guide...

  • Page 78: Figure 2-21 Zoom Out

    Click and hold the area in the zoom area selection bar, then drag left or right to pan the graph. The analog trigger point will move in respond to the panning of the graph. Keysight U2701A/U2702A User’s Guide...

  • Page 79: Figure 2-22 Panning A Waveform

    Scope Features and Functions zoom area selection bar trigger point Figure 2-22 Panning a waveform Keysight U2701A/U2702A User’s Guide...
  • Page 80 Scope Features and Functions THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight U2701A/U2702A User’s Guide...

  • Page 81: Specifications

    Keysight U2701A/U2702A USB Modular Oscilloscopes User’s Guide Characteristics and Specifications For the characteristics and specifications of the U2701A/U2702A USB Modular Oscilloscopes, refer to the datasheet at http://literature.cdn.keysight.com/litweb/pdf/5990-9537EN.pdf.
  • Page 82 Characteristics and Specifications THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight U2701A/U2702A User’s Guide...
  • Page 83 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2009 - 2017 Edition 10, June 1, 2017 Printed in Malaysia *U2702-90013* U2702-90013 www.keysight.com...

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