Keysight U3020AS26 User's And Service Manual
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Keysight U3020AS26 User's And Service Manual

Switching test set
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Keysight U3020AS26
Switching Test Set
User's and
Service Guide

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Summary of Contents for Keysight U3020AS26

  • Page 1 Keysight U3020AS26 Switching Test Set User’s and Service Guide...

  • Page 2: Safety Information

    Declarations of Conformity for this product ceed beyond a CAUTION notice until the indi- the DFARS and are set forth specifically in and for other Keysight products may be down- cated conditions are fully understood and met. writing elsewhere in the EULA. Keysight shall loaded from the Web.

  • Page 3: Waste Electrical And Electronic Equipment (Weee) Directive

    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/switches (product-specific information and support, software and documentation updates) –...
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  • Page 5: Table Of Contents

    ......... . . 39 Keysight U3020A User’s and Service Guide...
  • Page 6 ..........39 Shipping your product to Keysight for service or repair .

  • Page 7: List Of Figures

    ..........33 Keysight U3020A User’s and Service Guide...
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  • Page 9: List Of Tables

    ....... . . 20 Table 9 Compliance with German noise requirements ....38 Keysight U3020A User’s and Service Guide...
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  • Page 11: Description

    Description The Keysight U3020AS26 Test Set is a DC to 26.5 GHz Signal Distribution instrument. The Test Set functionally is a Dual SP6T 6-Port Latching, Terminated switch in which both switches are functionally ganged together. The Test Set mainframe is a rack mountable 2 EIA units high. Switch control is only processed via the LAN or GPIB rear panel interfaces.

  • Page 12: Verifying The Shipment

    If there is physical damage refer to “Contacting Keysight” on page 39. Keep the damaged shipping materials (if any) for inspection by the carrier and a Keysight Technologies representative. Keysight U3020A User’s and Service Guide...

  • Page 13: General Performance

    Test Set. – U3022AS26 maximum power is 50 W. Environmental tests The U3020AS26 complies with all applicable safety and regulatory requirements for the intended location of use. – Operating environment (indoor use) – Operating temperature 0 to 55 °C –...

  • Page 14: General Rf Switch Specifications

    Frequency range Amplitude tracking (dB) DC to 1.0 GHz ± 0.05 1.0 to 6.0 GHz ± 0.1 6.0 to 12 GHz ± 0.2 12 to 20 GHz ± 0.3 20 to 26.5 GHz ± 0.8 Keysight U3020A User’s and Service Guide...

  • Page 15: Table 3 Table

    Input ports 1 to 6 Frequency range Input ports 1 to 6 A & B (internal termination) DC to 1.0 GHz 1.0 to 6.0 GHz 6.0 to 12 GHz 12 to 20 GHz 20 to 26.5 GHz Keysight U3020A User’s and Service Guide...

  • Page 16: Front And Rear Panel Features

    All connectors are 3.5 mm female. Instrument state LEDs When the power is applied to the U3020AS26, the instrument enters its power-on sequence which requires several seconds to complete. The LEDs provide information on the state of the instrument during power-on and during upgrades of the instrument firmware.

  • Page 17: Table 7 Table

    Instrument programming error or self-test error. Green Error queue is read using SYSTem:ERRor? Green ATTN Instrument identification. Activated from instrument Web interface: Green (flashing) ON: Turn on Front Panel Interface Indicator Green OFF: Turn off Front Panel Interface Indicator Keysight U3020A User’s and Service Guide...
  • Page 18 (which is readily identifiable and is easily reached by the operator) may be used as a disconnecting device. Always use the three-prong ac power cord supplied with this product. Failure to ensure adequate CAUTION grounding by not using this cord may cause damage to the product. Keysight U3020A User’s and Service Guide...

  • Page 19: Controlling The Test Set

    Controlling the Test Set Controlling the test set and making measurements Keysight U3020A is a “slave” instruments. A controller must be used to control the Test Set. There are two methods that can be used to control the Test Set.

  • Page 20: Adding Instruments To The Lan Interface

    Figure 3 Keysight Connection Expert Locating the instrument Keysight Connection Expert opens with a “Welcome Screen,” and a window similar to that shown Figure 3. The available computer interfaces are configured during installation of the Keysight IO Libraries and are displayed in the left column (Explorer Pane). The properties of the configured interface are displayed in the right column (Propertied Pane).
  • Page 21 1 Click Add Instrument on the tool bar to search the network for instruments. 2 Select Add LAN Instrument on LAN (TCPIP0) > OK. Keysight Connection Expert performs an automatic find of all instruments on the same subnet as the computer.
  • Page 22 GPIB connector is located on the rear panel of the instrument. 1 Select the Keysight Control icon > Keysight Connection Expert. If a GPIB card is installed in your computer, the GPIB interface was configured during installation of the IO libraries and is displayed in the Explorer Pane of the “Welcome”...
  • Page 23 If you change the DHCP setting, you must cycle power on the U3020A to activate the new setting. NOTE Example The following command disables DHCP: SYST:COMM:LAN:DHCP OFF The following query returns the current DHCP setting: SYST:COMM:LAN:DHCP? Typical response: 0 Keysight U3020A User’s and Service Guide...
  • Page 24 Thus, this is the Default Gateway where packets are sent which are destined for a device not on the local subnet, as determined by the Subnet Mask setting. Contact your network administrator to determine if a gateway is being used and for the correct address. Keysight U3020A User’s and Service Guide...
  • Page 25 GPIB address command description This command assigns a GPIB address to the U3020A. Syntax SYSTem:COMMunicate:GPIB:ADDRess <address> SYSTem:COMMunicate:GPIB:ADDRess? If you change the GPIB address, you must cycle power on the U3020A to activate the new NOTE address. Keysight U3020A User’s and Service Guide...
  • Page 26 The following command sets the GPIB address to 10: SYST:COMM:GPIB:ADDR 10 The following query returns the current GPIB address: SYST:COMM:GPIB:ADDR? Typical response: 10 For a complete list of SCPI commands, refer to the Keysight L449xA RF Switch Platform User’s NOTE Guide (L4490-90001). Keysight U3020A User’s and Service Guide...

  • Page 27: Performance Verification

    – LAN - ON – PWR - ON 3 Preset the PNA. 4 PNA frequency range: 10 MHz to 26.5 GHz. 5 Set the PNA to Measure S21, Scale to 5 dB/Div. Figure 7 Equipment setup Keysight U3020A User’s and Service Guide...

  • Page 28: Measurement Setup

    7 Execute the sequence command <ROUT:SEQ:TRIG SEL_PORT1> to select Port 1. Figure 8 representation of the S21 response trace. Markers shown are not provided in the procedure above. Figure 8 Typical S21 response plot Keysight U3020A User’s and Service Guide...

  • Page 29: Service Information

    1 MW of isolation from ground. Theory of operation This section provides a general description of the U3020AS26 Test Set, followed by a more detailed operating theory. The operation of each component group is briefly described to the assembly level only.
  • Page 30 39495EXT module This module provides the bias and control signals for the RF Switches. Distribution board The Distribution board (Y1151A) provides a passive control signal interface between the 34945EXT module and the RF Switches. Keysight U3020A User’s and Service Guide...

  • Page 31: Troubleshooting

    Measure the DC voltage between the red and black wires. The red wire should measure approximately +12 Vdc. d If any voltages are not present, the controller module power supply will need to be replaced. Keysight U3020A User’s and Service Guide...
  • Page 32 Port to be selected, it is possible that the instrument Power On preset set has been corrupted. c Contact Keysight Technologies for support in recovering this preset set. d If no audible sound is heard, remove the top cover of the instrument.
  • Page 33 Controller module & power supply Digital I/O relay driver (L4490A option 004) DIstribution bd. I/O DIstribution (Y1151A) Switch driver RF switches 34945 ext. channel A & B Figure 10 Top view Keysight U3020A User’s and Service Guide...

  • Page 34: Safety And Information

    Declaration of conformity A copy of the Declaration of Conformity is available upon request, or a copy is available on the Keysight Technologies web site at http://regulations.products.keysight.com/DoC/search.htm. Statement of compliance This instrument has been designed and tested in accordance with CAN/CSA 22.2 No.
  • Page 35 The use of other fuses or material is prohibited. These servicing instructions are for use by qualified personnel only. To avoid electrical WARNING shock, do not perform any servicing unless you are qualified to do so. Keysight U3020A User’s and Service Guide...

  • Page 36: Connector Care And Cleaning Precautions

    Allow all residual alcohol moisture to evaporate, and fumes to dissipate prior to energizing the instrument. To prevent electrical shock, disconnect the Keysight U3020AS26 from mains electrical WARNING supply before cleaning. Use a dry cloth or one slightly dampened with water to clean the external case parts.

  • Page 37: Regulatory Information

    This symbol on all primary and secondary packaging indicates compliance to China standard GB 18455-2001. Compliance with German noise requirements This is to declare that this instrument is in conformance with the German Regulation on Noise Declaration for Machines (Laermangabe nach der Maschinenlaermrerordnung-3. GSGV Deutschland). Keysight U3020A User’s and Service Guide...

  • Page 38: Emc Information

    – IEC/EN 61326-1 – CISPR Pub 11 Group 1, class A – AS/NZS CISPR 11 – This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme a la norme NMB du Canada. Keysight U3020A User’s and Service Guide...

  • Page 39: Keysight Support, Services, And Assistance

    Contact Keysight for additional information on available service agreements for this product. Contacting Keysight Assistance with test and measurements needs and information or finding a local Keysight office are available on the Web at: http://www.keysight.com/find/assist If you do not have access to the Internet, contact your field engineer.
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  • Page 41 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2012 - 2019 Edition 2, December 16, 2019 Printed in Malaysia *U3020-90010* U3020-90010 www.keysight.com...

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