Keysight Technologies J7211A Operating And Service Manual
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Keysight Technologies J7211A Operating And Service Manual

Attenuation control unit
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Keysight J7211A/B/C
Attenuation Control Unit
Operating and
Service Manual

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  • Page 1 Keysight J7211A/B/C Attenuation Control Unit Operating and Service Manual...
  • Page 2 27.401 or DFAR 227.7103-5 (c), as applicable adhered to, could result in personal injury or in any technical data. death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met. Keysight J7211A/B/C Operating and Service Manual...

  • Page 3: Certification

    Certification Keysight Technologies certifies that this product met its published specifications at the time of shipment from the factory. Keysight Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology (NIST, formerly NBS), to the extend allowed by the Institute’s calibration facility, and to the calibration facilities of the other International Standards Organization members.

  • Page 4: Waste Electrical And Electronic Equipment (Weee) Directive

    To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/attenuators (product-specific information and support, software and documentation updates) – www.keysight.com/find/assist (worldwide contact information for repair and service) Keysight J7211A/B/C Operating and Service Manual...

  • Page 5: Table Of Contents

    ............9 Introduction Key Features of Keysight J7211A/B/C Attenuation Control Unit ....12 J7211A/B/C Front and Rear Panels at a Glance .
  • Page 6 ..........56 Exploring the J7211A/B/C Web Interface Over LAN .

  • Page 7: List Of Figures

    ......14 Figure 1-3 Type N (f) connectors for J7211A/B only ..... . 15...
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  • Page 9: List Of Tables

    ........67 Keysight J7211A/B/C Operating and Service Manual...
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  • Page 11: Introduction

    Key Features of Keysight J7211A/B/C Attenuation Control Unit J7211A/B/C Front and Rear Panels at a Glance This chapter provides you the overview of Keysight J7211A/B/C attenuation control unit that covers the key features of this instrument and also the physical appearances for different models.

  • Page 12: Key Features Of Keysight J7211A/B/C Attenuation Control Unit

    J7211A/B/C are designed in a way which make them suitable for benchtop and ATE testing for applications such as base station transceivers (BTS) test, WLAN, WIMAX™, MIMO and WCDMA.

  • Page 13: J7211A/B/C Front And Rear Panels At A Glance

    Introduction J7211A/B/C Front and Rear Panels at a Glance This section briefly explains the functions of front panel keys of J7211A/B/C. Figure 1-1 J7211A/B/C front panel features 1 LCD screen. This is a window which shows operating selections for front panel operation.

  • Page 14: Types Of Rf Connectors For J7211A/B/C

    Introduction This section briefly describes the function of the rear panel connectors of J7211A/B/C. Figure 1-2 J7211A/B/C rear panel features 1 GPIB connector. The interface connector from a source device to a listening device for remote mode of operation. 2 Alert symbol. This symbol is used to point out a necessary reference for the user.

  • Page 15: Figure 1-3 Type N (F) Connectors For J7211A/B Only

    Introduction Figure 1-3 Type N (f) connectors for J7211A/B only Figure 1-4 SMA (f) connectors for J7211A/B only Figure 1-5 3.5 mm (f) connectors for J7211C only Keysight J7211A/B/C Operating and Service Manual...
  • Page 16 Introduction THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight J7211A/B/C Operating and Service Manual...
  • Page 17 Keysight J7211A/B/C Attenuation Control Unit Operating and Service Manual Installation Initial Inspection Bench Operation This chapter explains how to unpack and check your instrument. It also explains how to prepare your instrument for bench operation.

  • Page 18: Installation

    2 If the contents are damaged or defective, contact your nearest Keysight Technologies Service & Support Office. Refer to the Service and Support information in the front matter of this manual.

  • Page 19: Bench Operation

    – (Top) Handle placed underneath the instrument to assure self-alignment of the instruments when stacked – (Bottom) Handle tilted to raise the front of the instrument for easier viewing of the front panel Figure 2-1 Handle positioning for bench operation Keysight J7211A/B/C Operating and Service Manual...
  • Page 20 Installation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight J7211A/B/C Operating and Service Manual...

  • Page 21: Verification

    Keysight J7211A/B/C Attenuation Control Unit Operating and Service Manual Verification Operator’s Check for Local Operation Instrument Settings Quick-Check Procedure This chapter provides you simple instructions to verify Keysight J7211A/B/C attenuation control unit’s functionality in local operation.

  • Page 22: Operator's Check For Local Operation

    014 & without UNL N4691B (3.5 mm ecal module 300 kHz to 26.5GHz) 83059B (3.5 mm thru female to female) N4690B (Type-N 50 ohm ecal module 300 kHz to 18 GHz) 1250-1472 (Type-N thru female to female) Keysight J7211A/B/C Operating and Service Manual...

  • Page 23: Instrument Settings

    Instrument settings Product model J7211A J7211B J7211C Start frequency 200 MHz 200 MHz 250 MHz Stop frequency 6 GHz 18 GHz 26.5 GHz Number of points Do not connect measuring terminals to mains. CAUTION Keysight J7211A/B/C Operating and Service Manual...

  • Page 24: Quick-Check Procedure

    Procedure 1 Calibrate the network analyzer with full-2 port calibration using the appropriate electronic or mechanical calibration kit. 2 Turn on J7211A/B/C and select “ATTEN” by using rotary knob. Refer chapter 4 ATTEN menu more details on setting attenuation values.
  • Page 25 Local Operation Getting Started with J7211A/B/C Main Menu of J7211A/B/C This local operation chapter explains some simple steps how to use the J7211A/B/C in local operations. Besides that, functionality of all menus are described to provide easy-to-use operations using J7211A/B/C.

  • Page 26: Local Operation

    Turn on J7211A/B/C 1 Connect AC power supply to J7211A/B/C. You should observe: – the background LED of the power button is red which illustrates that J7211A/B/C is in standby mode. 2 Press once on power button to turn on the J7211A/B/C.

  • Page 27: Main Menu Of J7211A/B/C

    The delay start is another feature for this attenuation control units as this feature is suitable when it is used in a production or testing environment where accurate timing is significantly required. If the user requires a continuous cycling, J7211A/B/C provides this capability by selecting continuous sweeping with appropriate dwell’s time.
  • Page 28 5 Scroll thru the options by using softkey Ed it Next. 6 E.g. The illustration shows that the J7211A/B/C is set to 1 dB step size by pressing Ed it Next softkey to highlight Step and key in the value thru keypad or rotary knob.
  • Page 29 13 To halt the cycling, press Stop Sweep softkey once. 14 Back softkey is directing you back to the previous menu. 15 The information as of last operation remains as illustrated and saved in program set 0 (S0). Keysight J7211A/B/C Operating and Service Manual...
  • Page 30 5 Observe that 2 steps appear and set your attenuation (ATTEN) and dwell time (Dwell). 6 E.g. Step 1 is set at 100dB attenuation and dwell time of 2s while Step 2 shows 20dB attenuation and dwell time of 0s. Keysight J7211A/B/C Operating and Service Manual...

  • Page 31: Atten Menu

    To d isplay uncorrected/corrected values Display uncorrected and corrected values: 1 Navigate to the ATTEN icon using the navigation rotary encoder and press Menu/Enter button once. 2 In Unc screen, absolute attenuation value of 121dB is shown. Keysight J7211A/B/C Operating and Service Manual...
  • Page 32 2 Now, you observe attenuation accuracy is corrected to 2 decimal places. E.g. Corrected value of 121.22 dB in this case. 3 E.g. Enter digit 90 manually using keypad to select attenuation of 90 dB. Before setting 90 dB, ensure dB is selected by pressing the Set softkey. Keysight J7211A/B/C Operating and Service Manual...
  • Page 33 2 To follow the example shown, press twice to select step 10. 3 Then, turn rotary encoder anticlockwise once to see 111 dB display as a result of 10 dB step down from 121 dB. Keysight J7211A/B/C Operating and Service Manual...

  • Page 34: Cycle Menu

    J7211A/B/C. To d isplay or clear cycles of attenuators Displaying number of cycles for specific attenuators in J7211A/B/C: 1 Navigate main menu to CYCLE menu and press once on Menu/Enter button. 2 This screen ATTENUATOR CYCLE shows the cycles per section from Sec1 - Sec4.

  • Page 35: Io Menu

    Refer to Chapter 6, "Remote Interface Configurations". INFO menu All the system information for J7211A/B/C is displayed on this menu. User may retrieve all necessary information from here. To d isplay J7211A/B/C information Display system info for J7211A/B/C: – Model –...
  • Page 36 – FPGA revision 1 Press once on Menu/Enter button once INFO icon is selected as illustrated. 2 There are 2 pages of information for J7211A/B/C. Press Info softkey once to move to page 2 or vice-versa. 3 Press Back softkey to return to main menu.

  • Page 37: Utility Menu

    Volume up or Volume down. To restore factory default setting for J7211A/B/C: 1 Scroll to highlight Factory Default. This option convert the J7211A/B/C into default setting. 2 Press Yes softkey once and OK for restoring factory default. Otherwise, press Cancel softkey for cancellation.
  • Page 38 Local Operation To reset LAN setting for J7211A/B/C: 1 Scroll to LAN reset and Yes softkey is shown. 2 Press Yes softkey once and a screen prompt and enquire whether you want to restore LAN Default. 3 Press OK softkey to proceed and Cancel to go back to the previous menu.

  • Page 39: Relative Menu

    1 In Atten, set attenuation desire attenuation value using keypad. 2 Press Relative button once and button will turn green indicates relative feature is turn on. 3 Notice that REL appears and value 20 dB is set as the relative attenuation. Keysight J7211A/B/C Operating and Service Manual...
  • Page 40 Local Operation 4 Tune rotary knob to adjust the desire attenuation which will be relative to 20 dB attenuation value. 5 E.g. Currently the absolute attenuation is at 21 dB. Keysight J7211A/B/C Operating and Service Manual...
  • Page 41 By understanding and learning these configurations, you can be more familiar on operating J7211A/B/C remotely and assist in setting up remote operation. This chapter also provides the programming guide for J7211A/B/C in SCPI commands.

  • Page 42: Remote Operations

    Interface selection You can choose to control the J7211A/B/C remotely using either the GPIB, USB or LAN interfaces. For information on selecting and configuring the remote interface manually from the instrument front panel or remotely via virtual front panel, refer to Chapter 5, "Remote...

  • Page 43: Lan Configuration

    I/O software refer to documentation that accompanies the software. LAN configuration The J7211A/B/C has three LAN operating modes: – Dynamic mode (Dynamic Host Configuration Protocol or DHCP) – Auto IP mode (Local PC Control or isolated LAN) –...

  • Page 44: Control Over Telnet Server

    3 The telnet screen opens. 4 Type a command and press Enter; it is sent to the J7211A/B/C and executed. If you enter a command that queries some data, the query response is displayed below the line in which you entered the command.

  • Page 45: Control From A Program (Using Port 5025)

    Figure 5-1 Example of control using telnet 5 Press ] while holding down Ctrl in the telnet screen to break the connection to the J7211A/B/C. The telnet prompt appears. Type “quit” at the telnet prompt and press Enter to finish using telnet.

  • Page 46: Control Using C Or Visual Basic

    UNIX environment, WinSock (WinSock1.1 and WinSock2.0), created by posting BSD Sockets to Windows and expanding it, is available. Control using Keysight VEE Keysight VEE allows you to control the J7211A/B/C through the connection to the socket of port 5025 using the To/From Socket. Figure 5-3 shows an example (when the IP address of the J7211A/ B/C is 141.183.220.226).

  • Page 47: Control Using Keysight I/O

    The Keysight I/O Libraries Suite is a collection of libraries that provides you the ability to use your instruments from a test and measurement program. Figure 5-4 shows an example of controlling via Keysight I/O (when the I/P address of J7211A is 141.183.220.234). Please ensure remote instrument name is check. Keysight J7211A/B/C Operating and Service Manual...

  • Page 48: Figure 5-4 Example Of Control Using Keysight I/O

    Remote Operations Figure 5-4 Example of control using Keysight I/O Keysight J7211A/B/C Operating and Service Manual...

  • Page 49: Programming Guide (Scpi)

    This command is to query current attenuation selected. This command confirms attenuation level NOTE before begin measurement. To increase and decrease attenuation level The following commands are used to increase or decrease attenuation value for attenuation control unit. [INPut]:[ATTenuation]:INCRease [<numeric>] [INPut]:[ATTenuation]:DECRease [<numeric>] Keysight J7211A/B/C Operating and Service Manual...
  • Page 50 If relative is not turn on, it will return error +13. Error messages: – + 12, “Value clipped to Max” – + 11, “Value clipped to Min” – + 13, “Not in relative mode” Keysight J7211A/B/C Operating and Service Manual...

  • Page 51: Table 5-1 Sections Of Attenuators

    B. Number of cycles for all sections will be displayed when second command is send. To display required J7211A/B/C’s information The following commands display information for selected request. DISPlay:ATTenuation DISPlay:IO DISPlay:PROGram DISPlay:CYCLe DISPlay:INFormation DISPlay:UTILity Keysight J7211A/B/C Operating and Service Manual...
  • Page 52 Remote Operations THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight J7211A/B/C Operating and Service Manual...
  • Page 53 Connecting the J7211A/B/C to Your Computer Exploring the J7211A/B/C Web Interface Over LAN This chapter provides information and steps to achieve remote operations of Keysight J7211A/B/C attenuation control unit via GPIB, USB and LAN. It will also introduces J7211A/B/C web interface over LAN.

  • Page 54: Remote Interface Configurations

    5 Configure your GPIB hardware as instructed by the documentation provided by the hardware vendor. 6 Use the Connection Expert utility of the Keysight IO Libraries Suite to add the J7211A/B/C and verify a connection. 7 The J7211A/B/C is shipped from factory with a default GPIB address of 28.

  • Page 55: Connecting Over Usb

    ““Connecting the J7211A/B/C to Your Computer” on page 66 for more information on installing the Keysight I/O Libraries software. 1 After I/O software is installed on your computer, connect a J7211A/B/C to your computer using a Type Mini B 5—pin USB cable.

  • Page 56: Connecting Over Lan

    Remote Interface Configurations 4 Use the Connectivity Expert utility of the Keysight I/O Libraries Suite to verify that the J7211A/ B/C is displayed under the USB interface. 5 Now you can use various programming environments to control the J7211A/B/C. For an overview on programming instructions via USB, refer to the Connectivity Guide.
  • Page 57 I/O software on your computer. Use the Connectivity Expert utility of the Keysight IO Libraries Suite to add the J7211A/B/C and verify a connection. When identifying the instrument, it is easiest if you use the IP address noted in above table.
  • Page 58 Remote Interface Configurations To prepare J7211A/B/C for manual mode Select J7211A/B/C for manual mode: 1 Navigate to IO icon and scroll to Manual IP for manual configuration. 2 Press Ed it IP softkey once and now, you should enter MANUAL IP ADDRESS, MANUAL SUBNET and MANUAL GATEWAY.
  • Page 59 I/O software on your computer. Use the Connectivity Expert utility of the Keysight IO Libraries Suite to add the J7211A/B/C and verify a connection. When identifying the instrument, it is easiest if you use the IP address noted in above table.

  • Page 60: Exploring The J7211A/B/C Web Interface Over Lan

    4 Exit the Options window. 5 Enter the IP address of the J7211A/B/C in the Address Field and press return result icon. Use the J7211A/B/C’s front panel utility menu to read the IP address. 6 After entering the respective IP address, the J7211A/B/C Web Interface’s Welcome Window should appears.

  • Page 61: Displaying The Browser Web Control Page

    2 You will notice a pop-up window, requesting for password. 3 Enter password (default password is “keysight”) and click submit. 4 You can view the virtual front panel of J7211A/B/C. 5 Now, you can control this device remotely, similar to the front panel of the actual instrument.

  • Page 62: Navigation Bar

    1 From the Welcome Window, click the Browser Web Control tab on the left side of the window. 2 You will notice a pop-up window, requesting for password. 3 Enter password (default password is “keysight”) and click submit. Keysight J7211A/B/C Operating and Service Manual...

  • Page 63: Figure 6-3 Pop-Up Window For J7211A/B/C's Web Interface

    Figure 6-3 Pop-up window for J7211A/B/C’s Web Interface 4 You can view the virtual front panel of J7211A/B/C. 5 Now, you can control this device remotely, similar to the front panel of the actual instrument. Keysight J7211A/B/C Operating and Service Manual...
  • Page 64 Remote Interface Configurations THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight J7211A/B/C Operating and Service Manual...
  • Page 65 Keysight J7211A/B/C Attenuation Control Unit Operating and Service Manual Servicing the Attenuation Control Unit Preparing a Static-Safe Workstation Maintenance and Adjustments This chapter will guide you on preparing a static-safe workstation and how to maintain your instrument in good condition.

  • Page 66: Servicing The Attenuation Control Unit

    – conductive floor mat and heel strap combination The methods may be used together or separately. A list of static-safe accessories and their part numbers is given in table below. Figure 7-1 Preparing a static-safe workstation Keysight J7211A/B/C Operating and Service Manual...

  • Page 67: Reducing Esd Damage

    – PC board assembly edge-connector contacts may be cleaned by using a lintfree cloth with a solution of 80% electronics-grade isopropyl alcohol and 20% deionized water. This should be performed at a static-safe workstation. Keysight J7211A/B/C Operating and Service Manual...

  • Page 68: Maintenance And Adjustments

    Be sure to select the correct fuse rating for the selected line voltage. Do not use repaired fuses or NOTE short circuited fuse-holders. To do so could cause a shock or fire hazard. Adjustment The J7211A/B/C attenuation control unit has no internal electrical or mechanical adjustments. Keysight J7211A/B/C Operating and Service Manual...
  • Page 69 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2001 - 2019 Edition 4, March 25, 2019 Printed in Malaysia *J7211-90001* J7211-90001 www.keysight.com...

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