Keysight Technologies J7201A Operating And Service Manual
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Keysight Technologies J7201A Operating And Service Manual

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Keysight J7201A/B/C
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Operating and
Service Manual

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  • Page 1 Keysight J7201A/B/C Attenuation Control Unit Operating and Service Manual...

  • Page 2: Safety Information

    FAR 27.401 or DFAR 227.7103-5 (c), adhered to, could result in personal injury or as applicable in any technical data. death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met. Keysight J7201A/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: Safety Considerations

    Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to a Keysight Technologies Sales and Service Office for service and repair to ensure that safety features are maintained.

  • Page 5: Safety Symbols

    Forty years is the expected useful life of the product. This symbol is a South Korean Class A EMC Declaration. This equipment is Class A suitable for professional use and is for use in electromagnetic environments outside of the home. R-R-Kst-WN19610 Keysight J7201A/B/C Operating and Service Manual...

  • Page 6: South Korean Class A Emc Declaration

    “Monitoring and Control Instrument” product. The affixed product label is as shown below. Do not dispose in domestic household waste. 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. Keysight J7201A/B/C Operating and Service Manual...

  • Page 7: 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/J7201 (product-specific information and support, software and documentation updates) – www.keysight.com/find/assist (worldwide contact information for repair and service) Keysight J7201A/B/C Operating and Service Manual...
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  • Page 9: Table Of Contents

    ........17 Types of RF connectors for J7201A/B/C .
  • Page 10 ..........84 Exploring the J7201A/B/C Web Interface Over LAN .

  • Page 11: Keysight J7201A/B/C Operating And Service Manual

    ......18 Figure 1-3 Type N (f) connectors for J7201A/B only ..... . 18...
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  • Page 13 ..72 Table 6-3 Bit configuration of Status Byte Enable register ....75 Keysight J7201A/B/C Operating and Service Manual...
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  • Page 15: Introduction

    Operating and Service Manual Introduction Key Features Front and Rear Panels at a Glance This chapter provides you the overview of Keysight J7201A/B/C attenuation control unit that covers the key features of this instrument and also the physical appearances for different models.

  • Page 16: Key Features

    J7201A/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 17: Front And Rear Panels At A Glance

    Introduction Front and Rear Panels at a Glance This section briefly explains the functions of front panel keys of J7201A/B/C. Figure 1-1 J7201A/B/C front panel features 1 LCD screen: This is a window which shows operating selections for front panel operation.

  • Page 18: Types Of Rf Connectors For J7201A/B/C

    Introduction This section briefly describes the function of the rear panel connectors of J7201A/B/C. Figure 1-2 J7201A/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 19: Figure 1-4 Sma (F) Connectors For J7201A/B Only

    Introduction Figure 1-4 SMA (f) connectors for J7201A/B only Figure 1-5 3.5 mm (f) connectors for J7201C only Keysight J7201A/B/C Operating and Service Manual...
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  • Page 21: Specifications

    Keysight J7201A/B/C Attenuation Control Unit Operating and Service Manual Specifications Environmental Specifications This chapter provides the Environmental Specifications of the Keysight J7201A/B/C attenuation control unit.

  • Page 22: Environmental Specifications

    Specifications Environmental Specifications The J7201A/B/C instrument is designed to fully comply with Keysight Technologies’ product environmental specifications as shown in Table 2-1. Table 2-1 Environmental specifications Parameter Specification Temperature – Operating C to +50 – Storage C to +70 Relative Humidity –...
  • Page 23 Keysight J7201A/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 24: 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 25: 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 3-1 Handle positioning for bench operation Keysight J7201A/B/C Operating and Service Manual...
  • Page 26 Installation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK Keysight J7201A/B/C Operating and Service Manual...

  • Page 27: Verification

    Keysight J7201A/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 J7201A/B/C attenuation control unit’s functionality in local operation.

  • Page 28: Operator's Check For Local Operation

    Table 4-2 Instrument settings Product model J7201A J7201B J7201C Start frequency 50 MHz 50 MHz 50 MHz Stop frequency 6 GHz 18 GHz 26.5 GHz Number of points Keysight J7201A/B/C Operating and Service Manual...

  • Page 29: 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 J7201A/B/C and select “ATTEN” by using rotary knob. Refer chapter 4 ATTEN menu more details on setting attenuation values.
  • Page 30 Verification THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK Keysight J7201A/B/C Operating and Service Manual...
  • Page 31 Local Operation Getting Started with J7201A/B/C Main Menu of J7201A/B/C This local operation chapter explains some simple steps how to use the J7201A/B/C in local operations. Besides that, functionality of all menus are described to provide easy-to-use operations using J7201A/B/C.

  • Page 32: Local Operation

    Turn on J7201A/B/C 1 Connect AC power supply to J7201A/B/C. You should observe: – the background LED of the power button is red which illustrates that J7201A/B/C is in standby mode. 2 Press once on power button to turn on the J7201A/B/C.

  • Page 33: Main Menu Of J7201A/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, J7201A/B/C provides this capability by selecting continuous sweeping with appropriate dwell’s time.
  • Page 34 5 Scroll through the optionsusing softkey Ed it Next. 6 The illustration below shows that the J7201A/B/C is set to 1 dB step size by pressing Ed it Next softkey to highlight Step and key in the value through keypad or rotary knob.
  • Page 35 11 Next setting option is number of sweeps. For example, the illustration below displays number of sweeps is 2. To cycle the attenuator, click Sweep softkey once. 12 Now, the symbol R is highlighted which indicates that J7201A/B/C is running. 13 You can also pause instrument’s cycling by selecting paus. Press R to continue cycling.
  • Page 36 5 Set attenuation (ATTEN) and dwell time (Dwell) for the two steps. For example, set 100 dB attenuation and dwell time of 2s for Step 1 while as set 20 dB attenuation and dwell time of 0s for Step 2 as shown in the illustration. Keysight J7201A/B/C Operating and Service Manual...

  • Page 37: Atten Menu

    Display Uncorrected/Corrected Values To 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 J7201A/B/C Operating and Service Manual...
  • Page 38 1 Navigate to the ATTEN icon using the navigation rotary encoder and press Menu/Enter button once. 2 Enter digit 50 manually using keypad to select attenuation of 50 dB. Before setting 50 dB, ensure dB is selected by pressing the Set softkey. Keysight J7201A/B/C Operating and Service Manual...
  • Page 39 4 Now, screen will show the setting of 90 dB with Cor and dB highlighted. 5 Press Set softkey once, GHz is chosen. Enter required frequency using keypad or rotary knob. For example, enter 4.5 GHz. Keysight J7201A/B/C Operating and Service Manual...
  • Page 40 121 dB. [1] Turn anticlockwise accordingly to obtain step down of decremental 10 dB such as 111 dB, 101 dB, 91 dB, 81 dB and so forth. Maximum attenuation level for J7201C is 101 dB. Keysight J7201A/B/C Operating and Service Manual...

  • Page 41: Cycle Menu

    J7201A/B/C. Display or Clear Cycles of Attenuators To display number of cycles for specific attenuators in J7201A/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 42: Io Menu

    Refer to Chapter 6, "Remote Interface Configurations". INFO menu All the system information for J7201A/B/C is displayed on this menu. User may retrieve all necessary information from here. Display J7201A/B/C Information To display the following system information for J7201A/B/C: – Model –...
  • Page 43 Local Operation 2 There are 2 pages of information for J7201A/B/C. Press Info softkey once to move to page 2 or vice-versa. 3 Press Back softkey to return to main menu. Keysight J7201A/B/C Operating and Service Manual...

  • Page 44: Utility Menu

    1 Navigate to UTILITY icon and press Menu/Enter button once. 2 You can choose Beep volume to increase and lower the beep volume of the attenuation box by pressing the softkeys Volume up or Volume down. Keysight J7201A/B/C Operating and Service Manual...
  • Page 45 Restore Factory Default Setting To restore factory default setting for J7201A/B/C: 1 Scroll to highlight Factory Default. This option resets the J7201A/B/C to the default setting. 2 Press Yes softkey once and OK for restoring the instrument to the factory default. Otherwise, press Cancel softkey for cancellation.
  • Page 46 Press BACK to return to the initial menu page. Display Calibration Data To display calibration data for J7201A/B/C: 1 Scroll down to highlight Calibration Menu and press Yes softkey once. 2 The screen displays all attenuation values at particular frequencies.
  • Page 47 Local Operation Turn On Auto Correction Setting To turn on Auto Correction setting for J7201A/B/C: 1 Scroll to Auto Correction. 2 Press On softkey once to turn on Auto Correction setting of the instrument. Keysight J7201A/B/C Operating and Service Manual...

  • Page 48: Relative Menu

    3 Note that REL appears and value 20 dB is set as the relative attenuation. 4 Tune rotary knob to adjust the desired attenuation which will be relative to 20 dB attenuation value. For example, the absolute attenuation is set to 21 dB in the illustration. Keysight J7201A/B/C Operating and Service Manual...
  • Page 49 By understanding and learning these configurations, you can be more familiar on operating J7201A/B/C remotely and assist in setting up remote operation. This chapter also provides the programming guide for J7201A/B/C in SCPI commands.

  • Page 50: Remote Operations

    Control DVD, it can be ordered by contacting your local Keysight Customer Contact Center. Interface selection You can choose to control the J7201A/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 6, "Remote...

  • Page 51: Usb Configuration

    The USB interface requires no front panel or remote configuration. The USB is fixed and can not be changed - it is set at the factory and is unique for each J7201A/B/C. For further information on USB configuration, refer to “Connecting over USB”...

  • Page 52: Programming Guide (Scpi)

    Numeric representation format: Integer (for Set/Return Parameters example, 8) Minimum 0 - for both attenuation level and frequency 121 (J7201A/B) - for attenuation level 101 (J7201C) - for attenuation level Maximum 6 GHz (J7201A) - for frequency 18 GHz (J7201B) - for frequency 26.5 GHz (J7201C) - for frequency...
  • Page 53 You may encounter the following two error messages if the value is not within the specified range: - + 12, “Value clipped to Max” - + 11, “Value clipped to Min” Related Commands [INPut:]ATTenuation/INPut[:ATTenuation] [INPut:]ATTenuation:INCRement/INPut[:ATTenuation]:INCRement [INPut:]ATTenuation:STEPsize/INPut[:ATTenuation]:STEPsize [INPut:]FREQuency? Keysight J7201A/B/C Operating and Service Manual...
  • Page 54 If step size is set to some other value, for example, 10 dB, increase or decrease attenuation level is following 10 dB step size. [INPut:]ATTenuation:STEPsize <numeric> Query? Set? Numeric representation format: Integer (for Set/Return Parameters example, 8) Minimum Keysight J7201A/B/C Operating and Service Manual...
  • Page 55 Maximum Units Examples To enable the relative attenuation function: :REL 1 To disable the relative attenuation function: :REL 0 To query the state of the relative attenuation function: [INPut:]ATTenuation:RELative[:STATe]? Related Commands [INPut:]ATTenuation:REFerence/INPut[:ATTenuation]:REFerence [INPut:]ATTenuation:RELative:LEVel/INPut[:ATTenuation]:RELative:LEVel [INPut:]FREQuency? Keysight J7201A/B/C Operating and Service Manual...
  • Page 56 [INPut:]ATTenuation:RELative:LEVel <numeric> Query? Set? Numeric representation format: Integer (for Set/Return Parameters example, 8) Minimum Maximum Units None Examples To set the relative attenuation to 28: :REL:LEV 28 To query the set relative attenuation: [INPut:]ATTenuation:RELative:LEVel? Keysight J7201A/B/C Operating and Service Manual...
  • Page 57 ‘bcc’ where b = bank number (0-n, range model dependent) and cc = channel number (00-nn, range model dependent). For example: 103 or 104 or 108. A list of channels may be specified in several forms: a comma separated list of channels as in: 101,103,105,108; Keysight J7201A/B/C Operating and Service Manual...
  • Page 58 101:107; a combination of channels and ranges as in: 102,103,104:107. ROUTe:OPEn <channel_list> Query? Set? Numeric representation format: Integer (for Set/Return Parameters example, 8) Minimum Maximum Units None Keysight J7201A/B/C Operating and Service Manual...
  • Page 59 8) Minimum Maximum Units None Examples To close all channels: ROUTe:CLOSe:ALL Related Commands ROUTe:CLOSe ROUTe:OPEn ROUTe:OPEn:ALL ROUTe:OPEn:ALL Opens all switching paths. ROUTe:OPEn:ALL Query? Set? Numeric representation format: Integer (for Set Parameters example, 8) Minimum Keysight J7201A/B/C Operating and Service Manual...

  • Page 60: Table 6-1 Sections Of Attenuators

    NOTE attenuator B. Number of cycles for all sections will be displayed when second command is send. DIAGnostic:RELay:CYCLes? <channel_list> Query? Yes, query only Set? Numeric representation format: Integer (for Return Parameters example, 8) Minimum Keysight J7201A/B/C Operating and Service Manual...
  • Page 61 CORRection? [<atten_level>][<suffic>],[<frequency>][<suffic>] Query? Yes, query only Set? Numeric representation format: Double Digit Return Parameters Integer (for example, 8) 0 dB – for attenuation level Minimum 0 Hz – for frequency Keysight J7201A/B/C Operating and Service Manual...
  • Page 62 Remote Operations 121dB (J7201A/B) – attenuation level 101dB (J7201C) – attenuation level Maximum 6 GHz (J7201A) – for frequency 18 GHz (J7201B) – for frequency 26.5 GHz (J7201C) – for frequency Units dB, Hz Examples To query the corrected value:...
  • Page 63 Turns the front panel display to the IO page. DISPlay:IO Query? Set? Set Parameters Minimum Maximum Units None Examples DISP:IO Related Commands DISPlay:ATTenuation DISPlay:PROGram DISPlay:CYCLe DISPlay:INFormation DISPlay:UTILity HCOPy:SDUMp:DATA? DISPlay:PROGram Turns the front panel display to the PROG page. DISPlay:PROGram Keysight J7201A/B/C Operating and Service Manual...
  • Page 64 DISPlay:CYCLe DISPlay:INFormation DISPlay:UTILity HCOPy:SDUMp:DATA? DISPlay:CYCLe Turns the front panel display to the CYCLE page. DISPlay:CYCLe Query? Set? Set Parameters Minimum Maximum Units None Examples DISP:CYCL Related Command s DISPlay:ATTenuation DISPlay:IO DISPlay:PROGram DISPlay:INFormation DISPlay:UTILity HCOPy:SDUMp:DATA? Keysight J7201A/B/C Operating and Service Manual...
  • Page 65 Related Commands DISPlay:ATTenuation DISPlay:IO DISPlay:PROGram DISPlay:CYCLe DISPlay:UTILity HCOPy:SDUMp:DATA? DISPlay:UTILity Turns the front panel display to the UTILITY page. DISPlay:UTILity Query? Set? Set Parameters Minimum Maximum Units None Examples DISP:UTIL Related Commands DISPlay:ATTenuation DISPlay:IO DISPlay:PROGram DISPlay:CYCLe Keysight J7201A/B/C Operating and Service Manual...
  • Page 66 “0,No Error”. If more errors are accumulated than the queue can hold, the last error in the queue is “-350,Too Many Errors”. SYSTem:ERRor? Query? Yes, query only Set? Return Parameters Integer, String Minimum Maximum Units None Keysight J7201A/B/C Operating and Service Manual...
  • Page 67 Sets the interface in the Remote state, which disables all front panel controls except the Local key. Pressing the Local key while in the Remote state returns the front panel to the Local state. SYSTem:REMote Query? Set? Set Parameters Minimum Keysight J7201A/B/C Operating and Service Manual...
  • Page 68 To query the initial control connection port number for Sockets communications: SYST:COMM:TCP:CONT? Related Command s SYSTem:ERRor? SYSTem:PREset SYSTem:REMote SYSTem:PERSona:MANufacturer Sets the manufacturer string returned by Query. *IDN? SYSTem:PERSona:MANufacturer <quoted string> Query? Set? Set/Return Parameters String Keysight J7201A/B/C Operating and Service Manual...
  • Page 69 Remote Operations Minimum Maximum Units None Examples To set the manufacturer string to “Keysight Technologies”: SYST:PERS:MAN “Keysight Technologies” To query the set manufacturer string: SYSTem:PERS:MAN? Related Commands SYSTem:PERSona:MANufacturer:DEFault SYSTem:PERSona:MANufacturer:DEFault Sets the manufacturer string to default (Keysight Technologies). SYSTem:PERSona:MANufacturer:DEFault Query? Set?
  • Page 70 - A binary block of data, consisting of bytes of setup information. The number of bytes is a dynamic number that is read and allocated by the instrument’s firmware. - SYSTem:SET query operates the same as the *LRN? query SYSTem:SET <Binary Block> Keysight J7201A/B/C Operating and Service Manual...
  • Page 71 Clears the following registers: - Standard Event Status - Operation Status Event - Questionable Status Event - Status Byte - Error Queue *CLS Query? Set? Set Parameters Minimum Maximum Units None Examples To clear the registers: *CLS Keysight J7201A/B/C Operating and Service Manual...

  • Page 72: Table 6-2 Bit Configuration Of Standard Event Status Enable Register

    Units None Examples To set the bit in the enable register part of the standard event status register to 129: *ESE 129 To query the enable register part of the standard event status register: Keysight J7201A/B/C Operating and Service Manual...
  • Page 73 *ESR? Related Commands *ESE *SRE *STB? *IDN? Requests the attenuation control unit to identify itself. It returns the data in four fields separated by commas. For example, Keysight Technologies, J7201A, MY00000000, A.00.01. Field Description Keysight Technologies Manufacturer J7201x Model number...
  • Page 74 *OPC? Query? Yes, query only Set? Return Parameters Integer, 0|1 Minimum Maximum Units None Examples To query the Standard Event Status Register: *OPC? Related Command s *CLS *IDN? *RST *TST? *WAI Keysight J7201A/B/C Operating and Service Manual...

  • Page 75: Table 6-3 Bit Configuration Of Status Byte Enable Register

    The query returns the current contents of the status byte enable register. The format of the return is in the range of 0 to 255. Table 6-3 Bit configuration of Status Byte Enable register Bit Position Bit Name OPER QUES n.u. Keysight J7201A/B/C Operating and Service Manual...
  • Page 76 Reads the condition register of the status byte register and returns a decimal value which corresponds to the binary-weighted sum of all bits set in the register. *STB? Query? Set? Return Parameters Integer (register value) Minimum Maximum Units None Keysight J7201A/B/C Operating and Service Manual...
  • Page 77 Most commands are sequential and are completed before the next command is executed. Overlapped commands are executed in parallel with other commands. The *WAI command prevents subsequent commands from being executed before any overlapped commands have been completed. *WAI Keysight J7201A/B/C Operating and Service Manual...
  • Page 78 *LRN? Query? Yes, query only Set? Return Parameters (Optional) Binary Data Minimum Maximum Units None Examples To return all the saved EEPROM values: *LRN? Related Command s *CLS *IDN? Keysight J7201A/B/C Operating and Service Manual...
  • Page 79 Remote Operations *OPC? *RST *TST? SYSTem:SET Keysight J7201A/B/C Operating and Service Manual...
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  • Page 81 Connecting the Remote Interface Exploring the J7201A/B/C Web Interface Over LAN This chapter provides information and steps to achieve remote operations of Keysight J7201A/B/C attenuation control unit via GPIB, USB and LAN. It will also introduces J7201A/B/C web interface over LAN.

  • Page 82: 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 J7201A/B/C and verify a connection. 7 The J7201A/B/C is shipped from factory with a default GPIB address of 28.

  • Page 83: Connecting Over Usb

    ““Connecting the J7201A/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 J7201A/B/C to your computer using a Type Mini B 5—pin USB cable.

  • Page 84: Connecting Over Lan

    Remote Interface Configurations 4 Use the Connectivity Expert utility of the Keysight I/O Libraries Suite to verify that the J7201A/ B/C is displayed under the USB interface. 5 Now you can use various programming environments to control the J7201A/B/C. For an overview on programming instructions via USB, refer to the Connectivity Guide.
  • Page 85 I/O software on your computer. Use the Connectivity Expert utility of the Keysight IO Libraries Suite to add the J7201A/B/C and verify a connection. When identifying the instrument, it is easiest if you use the IP address noted in above table.
  • Page 86 Remote Interface Configurations To prepare J7201A/B/C for manual mode Select J7201A/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 87 I/O software on your computer. Use the Connectivity Expert utility of the Keysight IO Libraries Suite to add the J7201A/B/C and verify a connection. When identifying the instrument, it is easiest if you use the IP address noted in above table.

  • Page 88: Exploring The J7201A/B/C Web Interface Over Lan

    4 Exit the Options window. 5 Enter the IP address of the J7201A/B/C in the Address Field and press return result icon. Use the J7201A/B/C’s front panel utility menu to read the IP address. 6 After entering the respective IP address, the J7201A/B/C Web Interface’s Home window appears.

  • Page 89: Navigation Bar

    1 In the Home window, click Control Instrument on the top bar of the window. 2 You can view the virtual front panel of J7201A/B/C. 3 Now, you can control this device remotely, similar to the front panel of the actual instrument.
  • Page 90 4 Click the Settings icon on the top left corner of the window to open the Password Options window. 5 Enter a new password and click Enable Password if you wish to enable password for controlling the instrument. Keysight J7201A/B/C Operating and Service Manual...
  • Page 91 Keysight J7201A/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 92: Servicing The Attenuation Control Unit

    – 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 J7201A/B/C Operating and Service Manual...

  • Page 93: 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 J7201A/B/C attenuation control unit has no internal electrical or mechanical adjustments. Keysight J7201A/B/C Operating and Service Manual...
  • Page 94 Servicing the Attenuation Control Unit THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK Keysight J7201A/B/C Operating and Service Manual...
  • Page 95 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2019 Edition 1, September 25, 2019 Printed in Malaysia J7201-90001 www.keysight.com...

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