Keysight Technologies E4417A Service Manual
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Keysight Technologies E4417A Service Manual

Keysight Technologies E4417A Service Manual

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Summary of Contents for Keysight Technologies E4417A

  • Page 1 Keysight Technologies E4416A/4417A Power Meters Service Guide...

  • Page 2: Safety Information

    Do not proceed beyond a WARNING acquires no greater than Limited Rights as defined in FAR 27.401 or DFAR notice until the indicated conditions are 227.7103-5 (c), as applicable in any fully understood and met. technical data. Keysight E4416A/E4417A Power Meters Service Guide...

  • 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, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.

  • Page 4: Limitation Of Warranty

    AND FITNESS FOR A PARTICULAR PURPOSE. Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. KEYSIGHT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

  • Page 5: Safety Symbols

    This terminal is for use where the earthing cannot be assured. At least an 18AWG earthing conductor should be used in such an instance, to ground the instrument to an assured earth terminal. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 6: Personal Safety Considerations

    Any adjustments or service procedures that require operation of the CAUTION instrument with protective covers removed should be performed only by trained service personnel. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 7: Regulatory Markings

    Cet appareil ISM est conforme à la norme NMB-001 du Canada. This is the symbol of an Industrial Scientific and Medical Group 1 Class A product. The CSA mark is a registered trademark of the Canadian Standards Association. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 8: Iec 1010-1 Compliance

    Recommended Calibration Interval Keysight Technologies recommends a two-year calibration cycle for the E4416A and E4417A power meter. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 9: Returning Your Power Meter For Service

    The carton must be both large enough and strong enough to accommodate the power meter and allow at least 3 to 4 inches on all sides of the power meter for packing material. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 10 4. Seal the shipping container securely with strong nylon adhesive tape. 5. Mark the shipping container "FRAGILE, HANDLE WITH CARE" to ensure careful handling. 6. Retain copies of all shipping papers. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 11: About This Guide

    This appendix contains information on the Measurement Uncertainty Analysis in Power Reference Level Test Measuremet Uncertainty Analysis - Instrument Accuracy Test This appendix contains information on the Measurement Uncertainty Analysis in Instrument Accuracy Test Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 12: Table Of Contents

    ..........29 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 13 ......... . . 58 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 14 ........88 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 15 ..........128 Suggested Diagnostic Equipment ......128 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 16 ..... .170 Expanded Uncertainty kuc(y): ......172 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 17 ......149 Figure D-1 Measurement Setup ......162 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 18 ....168 Table D-3 Combined Standard Uncertainty ....171 Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 19: Characteristics And Specifications

    E4416A/E4417A Power Meters Service Guide Characteristics and Specifications For the characteristics and specifications of the E4416A/E4417A Power Meters...

  • Page 20: Performance Tests

    E4416A/E4417A Power Meters Service Guide Performance Tests Introduction Zero Test Instrument Accuracy (Normal Path) Test Instrument Accuracy (Average Path) Test Power Reference Level Test Keysight E-Series Power Sensor Interface Test Keysight E932x Power Sensor (Average Path) Functional Test Time Base Accuracy Test...

  • Page 21: Introduction

    – Output standing wave ratio (SWR) test. Equipment Required Each performance test description details the equipment required by the test. In addition, Appendix B summarizes the equipment required for all performance tests and adjustments. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 22: Performance Test Record

    Calibration Cycle Keysight E4416A and E4417A power meters require performance tests to be run every two years to verify that they are operating within specified tolerances. Under conditions of heavy usage or severe operating environments, this calibration cycle should be performed more frequently.

  • Page 23: Zero Test

    After the power meter is initially calibrated and zeroed, the change in the digital readout is monitored. This test also takes drift and noise into account, since drift, noise and zero readings cannot be separated. Equipment – Range Calibrator: Keysight 11683A – Power Sensor Cable: Keysight 11730A Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 24: Test Setup

    The following procedure should be performed for the Zero Test. The procedure details the key presses required on the Keysight NOTE Technologies E4418B. For the Keysight Technologies E4419B, the equivalent key presses should be performed on both channels. 1 Connect the equipment as shown in Figure 2-1.
  • Page 25 8 Wait 30 seconds then verify that the power meter’s reading is within ±0.05 μW. Record the reading. Table 2-1 Zero Test Results Channel A Actual Resul ts Channel B Actual Resul ts (E4417A Only) –76.40 nW _________________ _________________ +76.40 nW Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 26: Instrument Accuracy (Normal Path) Test

    The test result is obtained by applying a factor of K = 2.58: Equation 2-2: Accuracy σ Accuracy 2.58 This accuracy figure represents electrical performance of the normal path with confidence limits of 99%. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 27: Equipment

    Test Setup Power sensor Power sensor cable Power meter Power ref Breakout box Digital Voltmeter + input black − input CHANNEL A Power sensor cable Figure 2-2 Instrument Accuracy (Normal Path) Test Setup Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 28: Procedure

    Use the following procedure to perform the instrument accuracy (normal path) test: The procedure details the key presses required on the Keysight E4416A. For the NOTE Keysight E4417A the equivalent key presses should be performed on both channels. Connect the equipment as shown in Figure 2-2.
  • Page 29 NOTE that can be applied is +3 dBm to −30 dBm. Power levels outside this range may cause inaccurate results to be obtained and in some cases may cause damage to the E9321A sensor. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 30 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - × ⎝ ⎠ DVMValue Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 31 _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 32 _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ _________ Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 33: Instrument Accuracy (Average Path) Test

    30 μW and below, as it uses a standard 11683A Range Calibrator. As such, this test procedure should be used for indication only. Equipment – Range calibrator: Keysight 11683A. – Power sensor cable: Keysight E9288A. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 34 Use the following procedure to perform the instrument accuracy (average path) test: The procedure details the key presses required on the Keysight E4416A. For the NOTE Keysight E4417A the equivalent key presses should be performed on both channels. 1 Connect the equipment as shown in Figure 2-4.
  • Page 35 8 Zero the power meter: Zero Press . Wait approximately 10 seconds for the wait symbol to Zero disappear. 9 Set the range calibrator's FUNCTION switch to CALIBRATE. 10 Set the range calibrator's RANGE switch to 1 mW. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 36 31.785 mW, and 101.35 mW respectively. It is not necessary to check instrument accuracy in dBm. The power meter uses the same internal circuitry to measure power and mathematically converts watts to dBm. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 37: Test Procedure 2

    As such, this test procedure should be used to ensure the power meter meets its published specification. Equipment – Range Calibrator: Keysight 11683A Option H01 – Power Sensor Cable: Keysight E9288A – DC Calibrator: Datron 4000A Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 38: Test Setup

    The following procedure should be performed for the Instrument Accuracy NOTE Test.The procedure details the key presses required on the Keysight E4416A. For the Keysight E4417A the equivalent key presses should be performed on both channels. 1 Connect the equipment as shown in Figure 2-5.
  • Page 39 This settling would appear on the power meter display as downward drift. When the drift has reached minimum, (typically less than 60 seconds), the range calibrator is settled. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 40 Refer to step 10 for details on how to setup the filter length. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 41 _____ _____ 10.046 mW 995.6 10044.4 4.6872 V 31.6228 mW 4.8 μW 31.477 mW _____ _____ 31.769 mW 31481.8 31764.2 15.588 V 100 mW 18.5 μW 99.54 mW _____ _____ 100.46 mW 99558.5 100441.5 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 42 ±0.5% after 2 years. This specification includes the ±0.4% setting and also takes into account other factors that will contribute to determining the accuracy after 2 years. The complete breakdown of the ±0.5% specification is as follows: Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 43 – R is the resistance of the mount resistor in the Keysight 432A power meter. For further information refer to Appendix – Calibration Factor is the value of the thermistor mount at 50 MHz. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 44: Procedure

    Use the following procedure to perform the power reference level test: The procedure details the key presses required on the Keysight E4416A. For the NOTE Keysight E4417A the equivalent key presses should be performed on both channels. 1 Set the DVM to measure resistance:...
  • Page 45 Release the Fine Zero switch and proceed to the next step. 9 Round the DVM reading to two decimal places. Record this reading as V – V ___________ 10 Turn the power reference on: Zero Press Power Ref On Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 46 15 Verify that P is within the limits shown in Table 2-5 and record the reading meas in the table. Table 2-5 Power Reference Level Test Result Actual Resul t 0.991 mW 1.009 mW __________________ Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 47: Procedure

    The frequency and calibration factor data have checksums which are compared to the data downloaded by the power meter. For the Keysight E4417A dual channel power meter, this test must be performed on both channels. This test verifies that the power meter can successfully download this data from the sensor.

  • Page 48: Procedure

    Use the following procedure to perform the test: The procedure details the key presses required on the Keysight E4416A. For the NOTE Keysight E4417A the equivalent key presses must be performed on both channels. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 49: Figure 2-7 Sensor (Average Path) Functional Test Setup

    – Highlight the Sensor Mode parameter using the up/down arrow keys. – Press Change – A pop-up window is displayed. – Scroll through the Sensor Mode values using the up/down arrow keys. Select a value of AVG only. – Press Enter – Press Done Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 50: Figure 2-8 Sensor (Average Path) Functional Test Setup With

    – Scroll through the Range values by pressing Change . Select a value of LOWER. – A pop-up window is displayed. – Press Done 9 Verify that the display reads −30 dBm ±1 dB. Record the reading in Table 2-6. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 51 15 Turn on the power reference: Zero Press Power Ref On 16 Verify that an overload error is displayed on the status line at the top of the power meter's display and that the display reads 999.99 dBm. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 52 Channel A Resul ts Channel B Resul ts (Keysight E4417A Only) Low Range, 30 dB pad _________________ _________________ Upper Range, 30 dB pad _________________ _________________ Low Range, no pad _________________ _________________ High Range, no pad _________________ _________________ Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 53: Time Base Accuracy Test

    Trig Out socket on the rear of the power meter then enabling test mode from the service menu. Equipment – Frequency counter: Keysight 53132A. Test Setup Frequency Counter Power Meter (rear) Trig out Figure 2-9 Time Base Accuracy Test Setup Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 54: Procedure

    5 Note the reading on the frequency counter and verify that it is within the limits shown in Table 2-7: Table 2-7 Power Reference Level Test Result Actual Resul t 9.9990 MHz 10.0010 MHz ________________ Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 55: Output Standing Wave Ratio (Swr) Test

    [a] For instruments with the 50 MHz 1mW output (power ref) connector mounted on the front panel. [b] For instruments with the 50 MHz 1mW output (power ref) connector mounted on the rear panel. This applies to models E4416A and E4417A with Option 003 fitted.
  • Page 56 1 Γ s Γ 2 – - - - - - - - - - - - - - - - - - - - - - - 1 Γ s Γ 1 – Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 57: Equipment

    Test Setup Test Power Meter Power Meter Power ref Digital Voltmeter + input comp − input Thermistor mount Figure 2-10 Output Standing Wave Ratio Test Setup Procedure Use the following procedure to perform the test: Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 58 DVM input leads are isolated from chassis ground. Ensure that the Keysight 432A and the power meter under test have been NOTE switched on for at least 30 minutes before performing the following steps. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 59 19 Disconnect the DVM negative input lead from the VRF connector on the Keysight 432A. Reconnect it to the Keysight 432A chassis ground. 20 Observe the reading on the DVM. Record this value as Vcomp – V ___________ comp Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 60 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ⋅ 4 R 2 – P ___________ Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 61 27 Calculate the value of the output SWR using Equation 2-13 and record the value: Equation 2-13: Γ s - - - - - - - - - - - - - - - - - - Γ s – – Output SWR ___________ Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 62 [a] For instruments with the 50 MHz 1 mW output (power ref) connector mounted on the front panel. [b] For instruments with the 50 MHz 1 mW output (power ref) connector mounted on the rear panel. This applies to models E4416A and E4417A with Option 003.

  • Page 63: Performance Test Record

    Interface Test Pass/Fail ______________ ______________ Pass/Fail Functional Test Low Range, 30 dBm pad Pass/Fail ______________ ______________ Pass/Fail Upper Range, 30 dBm pad Pass/Fail ______________ ______________ Pass/Fail Low Range, no pad Pass/Fail ______________ ______________ Pass/Fail Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 64 [b] For instruments with the 50 MHz 1 mW output (power ref) connector mounted on the front panel. [c] For instruments with the 50 MHz 1 mW output (power ref) connector mounted on the rear panel. This applies to models E4416A and E4417A with Option 003 fitted. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 65: Adjustments

    E4416A/E4417A Power Meters Service Guide Adjustments Introduction Power Reference Oscillator Frequency Adjustment Power Reference Oscillator Level Adjustment Display Brightness and Contrast Adjustment...

  • Page 66: Introduction

    When the maintenance proced ure can be performed without power, the power should be removed. Equipment Required The adjustment procedures include a list of recommended test equipment. The test equipment is also identified on the test setup diagrams. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 67: Post-Repair Adjustments

    A5 Daughter Assembly Instrument Accuracy Test. A6 Measurement Assembly Instrument Accuracy Test. W1 or W2 Power Sensor Cable Instrument Accuracy Test. BT1 Lithium Battery Battery Self Test. Power Reference Cable Kits Power Reference Level Test. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 68: Power Reference Oscillator Frequency Adjustment

    Variable inductor A2L9 is adjusted to set the power reference oscillator output frequency to 50.0 ±0.5 MHz. This frequency is a supplemental characteristic. Frequency Counter Power Meter POWER Figure 3-1 Adjustment Setup Equipment – Frequency Counter: Keysight 53132A. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 69: Procedure

    5 and step 6. 5 Remove the power meter cover. 6 Adjust A2L9 to obtain a 50.0 ±0.5 MHz indication on the frequency counter. Refer to Figure 3-2 for the position of A2L9. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 70: Figure 3-2 A2L9 Adjustment Location

    Adjustments A2R90 A2 Assembly A2L9 A2J13 Front Panel Figure 3-2 A2L9 Adjustment Location Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 71: Power Reference Oscillator Level Adjustment

    – Test line limit: 0.1%. – System uncertainty: 0.3%. – 2 year oscillator drift: 0.04%. – Delta environment: <0.06%. The following adjustment procedure ensure the power reference oscillator meets the post-factory accuracy setting of ±0.4%. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 72: Figure 3-3 Adjustment Setup

    Signal acquisition criteria may vary if alternative test instruments are used. In such cases refer to the manufacturer's guidelines for further information. The power meter may be returned to the nearest Keysight Technologies office to NOTE have the power reference oscillator checked and/or adjusted.

  • Page 73: Equipment

    – Calibration Factor is the value of the thermistor mount at 50 MHz. Equipment – Test power meter: Keysight 432A. – Thermistor Mount: Keysight 478A Option H75 or H76. – Digital Voltmeter (DVM): Keysight 3458A. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 74: Procedure

    The procedure details the key presses required on the Keysight E4416A. For the NOTE Keysight E4417A the equivalent key presses should be performed on both channels. 1 Set up the DVM to measure resistance. Connect the DVM between the VRF connector on the rear panel of the Keysight 432A and pin 1 on the thermistor mount end of the sensor cable.
  • Page 75 V comp V 0 ) CalibrationFactor – – 14 Remove the power meter's cover and adjust A2R90 until the DVM indicates the calculated value of V . Refer to Figure 3-4 for the position of A2R90: Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 76: Measurement Uncertainty

    Adjustments A2R90 A2 Assembly A2L9 A2J13 Front Panel Figure 3-4 A2R90 Adjustment Location Measurement Uncertainty Refer to Appendix Measurement Uncertainty Analysis - Power Reference Level Test. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 77: Display Brightness And Contrast Adjustment

    2 When the desired display contrast level is obtained, press the Set Contrast softkey, located under the softkey menu. Service Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 78: Theory Of Operation

    E4416A/E4417A Power Meters Service Guide Theory of Operation Introduction A1 Power Supply A2 Processor Assembly A3 Front Panel Assembly A4 Comms Assembly A5 Daughter Assembly A6 Measurement Assembly Functional Block Diagram...

  • Page 79: Introduction

    Theory of Operation Introduction This chapter describes how each of the power meter's assemblies operate. A functional block diagram is included at the end of the chapter giving an overall view of the power meter's operation. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 80: A1 Power Supply

    88). The ac line fuse is located in the line input module on the power meter's rear panel (Keysight Part Number 2110-0957). The fuse holder contains a spare fuse as standard on shipment. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 81: A2 Processor Assembly

    The recorder outputs are driven from a dual 12 bit DAC which is driven by the microcontroller. The dual DAC outputs are buffered, filtered and scaled to give a 1 V full scale output nominal. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 82 The 20 MHz system clock and some control signals are connected to the measurement modules. The measurement module interface is completed with the distribution of switched and direct power (+12 V, −12 V and +5 V). Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 83 3 V the RAM will lose the following information when power is disconnected from the meter: – Unit Serial Number. – Revision letter of Processor Card. – Unit Option. – User defined setups. – User defined sensor calibration tables. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 84: A3 Front Panel Assembly

    – The ribbon cable from A2J3 of the processor assembly which controls the LCD display. The power meter self tests contain display tests. These are accessed by pressing System More Service Self Test Bitmap Displays Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 85: A4 Comms Assembly

    The comms assembly also provides a filtered path for the single/dual recorder output signal and the TTL input and output signals. It also provides ESD protection for the RS232.422, TTL I/O, and recorder outputs. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 86: A5 Daughter Assembly

    – Clock buffering and distribution. – External trigger output buffer. – External trigger input comparator and buffer. – +2.5 V precision reference. – +11 V regulator. – +3.3 V regulator. – +2.5 V regulator. – ±5 V regulators. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 87: A6 Measurement Assembly

    Theory of Operation A6 Measurement Assembly There is one measurement assembly in the E4416A and two in the E4417A. As the E4416 and E4417 are peak and average power meters that are compatible with all Keysight power sensors in the 848x Series, N8480 Series and E Series, the measurement assembly has two measurement paths.

  • Page 88: Normal Path

    15 MHz. The filter output is fed to a buffer amplifier which has a gain of 1.1. This ensures that switching transients are not passed backwards into the filter and provides a Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 89 The processor assembly communicates with the DSP through the FPGA. The DSP is loaded with the appropriate program by the processor assembly depending on sensor type and required measurement mode. The processor assembly loads the FPGA using a serial configuration bus. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 90: Ancillary Functions

    All clocks are derived from the 20 MHz system clock that is generated on the A2 processor assembly and distributed on the A5 daughter assembly. The E9320 sensors are provided with switchable power supplies. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 91: Functional Block Diagram

    Theory of Operation Functional Block Diagram The following two pages contain a functional block diagram for the instrument giving an overall view of the power meter's operation. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 92 Theory of Operation Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 93 Theory of Operation Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 94: Replaceable Parts

    E4416A/E4417A Power Meters Service Guide Replaceable Parts Introduction Assembly Part Numbers Front Panel Connector Repair Firmware Upgrades Assembly and Disassembly Guidelines...

  • Page 95: Introduction

    Introduction This chapter contains details of some of the higher level components and assemblies which can be ordered from Keysight Technologies. It also details how to assemble and disassemble the power meter for repair. To order parts contact your local Keysight Technologies Sales and Service Office.

  • Page 96: Assembly Part Numbers

    Adapter RF N-SMA E4418-20009 A304 Front Panel Assembly for: Keysight E4417A Option 003 E4417-60202 Adapter RF N-SMA E4418-20009 Comms Assembly E4418-60012 Daughter Assembly for: E4416-60007 Keysight E4416A and Keysight E4417A Measurement Assembly E4416-60004 Fan Assembly E4418-61004 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 97 Recorder Output Cable Assy E4418-61015 Front Sensor Cable Assembly Kit E4416-61013 Rear Sensor Cable Assembly Kit E4416-61014 Front Power Reference Cable Kit E4418-61811 Rear Power Reference Cable Kit E4418-61813 Flex Circuit E4418-66502 Rubber Keypad E4416-40001 Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 98: Front Panel Connector Repair

    The instrument accuracy tests should then be carried out to verify the functionality of the new part. Refer to Chapter 2 for further information on instrument accuracy tests. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 99: Firmware Upgrades

    NT. Both are supplied with firmware upgrade kit E4416-61016 To determine the firmware version currently installed in your power meter, press: – Service System More Version Firmware must be downloaded after the processor board is replaced. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 100: Assembly And Disassembly Guidelines

    Replaceable Parts Assembly and Disassembly Guidelines The guidelines in this section describe the removal and replacement of the major assemblies in the Keysight E4416A and Keysight E4417A power meters. Once an assembly has been replaced, refer to “Post-Repair Adjustments” page 73 to ensure that the correct performance tests and adjustments are carried out.

  • Page 101: Removing The A1 Power Supply Assembly

    The second, a closed loop terminal bonded to the chassis with an M3.5 machine screw (use a 9 lb/in T15 screw driver). All the protective earth wiring can be identified by the insulation color green with a yellow stripe. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 102: Removing The A2 Processor Assembly

    When re-assembling the processor board, ensure the A2 plastic support bracket NOTE is returned to its locked position. After replacing a processor board, the Power Reference Frequency and Level NOTE must be checked. For further information refer to Chapter 2, "Performance Test Record". Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 103 For further information refer to Chapter 3, "Display Brightness and Contrast Adjustment". Firmware should be downloaded to the instrument after the processor board is NOTE replaced. Refer to “Firmware Upgrades” on page 106. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 104: Removing The A4 Comms Assembly

    When replacing these screws use a 21 lb/in T15 screw driver. screw 5 Unscrew the GPIB and RS232/422 connectors from the rear panel. When replacing these screws use a 6 lb/in 9/32 in socket. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 105 6 Disconnect the Recorder cable for channel A from J23 pins 1,2,3. Disconnect the Recorder cable for channel B from J23 pins 4,5,6. 7 Lift the A4 Comms assembly from the two standoffs and slide it out. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 106: Removing The A5 Daughter Or A6 Measurement Assemblies

    NOTE 2 Loosen release tabs on measurement assembly and then remove vibration support bracket. 3 Slide out the measurement assembly from the side of the power meter. 4 The daughter assembly is removed vertically. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 107: Removing The A7 Fan Assembly

    1 Remove the A1 power supply assembly as shown on page 108. 2 Remove the pins which attach the fan to the chassis. 3 Remove the fan cable connector from the A2 processor assembly to release the fan. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 108: Removing The Power Meter Ram Battery (Bt1)

    The battery should not be subjected to short circuit of the battery terminals or to excessive heat. Do not recharge this battery or d ispose of it by burning. Check local country regulatory requirements on the d isposal of lithium batteries. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 109: Removing The A3 Front Panel Assembly

    LCD cable connectors and disconnect the cable. 2 Disconnect the flex circuit from the measurement assembly. Take care when disconnecting the flex circuit from the measurement assembly. NOTE Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 110 After replacing a front panel assembly, the display brightness and contrast must NOTE be adjusted. Refer to Chapter 3, "Display Brightness and Contrast Adjustment" for further information. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 111 1 Remove the front panel from the power meter. (Refer to “Removing the A3 Front Panel Assembly” on page 116 for details on removing the front panel). 2 Replace the power sensor cable assembly(s) using the replacement kit. Front panel sensor retaining clip recess Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 112 Replaceable Parts Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 113: Replacing The Front Panel Power Reference Cable Assembly

    “Removing the A3 Front Panel Assembly” on page 116 for details on removing the front panel). 2 Replace the power reference output cable assembly using the replacement kit and the torques indicated on the following diagrams: Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 114 Replaceable Parts Fold up tab after assembly 25 lb/in 0 lb/in 6 lb/in Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 115: Replacing The Rear Panel Power Sensor Cable Assemblies (Options 002 And 003)

    2 Replace the power sensor cable assembly using the replacement kits. The inner recess on the power sensor cable is used to locate the circlip when assembling to the rear chassis. Front panel sensor retaining clip recess Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 116 Replaceable Parts Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 117: Replacing The Rear Panel Power Reference Cable Assembly (Option 003)

    “Removing the A4 Comms Assembly” on page 111 for further information). 2 Replace the power reference cable assembly using the replacement kit and the torques indicated on the following diagrams: 25 lb/in 9 lb/in tie wraps 6 lb/in Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 118: Replacing The Rear Panel Recorder Output(S) Cable Assembly

    2 Replace the recorder output cable assembly using the replacement kit and the torque indicated on the following diagram: 25 lb/in Recorder output A connects to A4 J23 and recorder output B connects to NOTE A4 J24. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 119: Replacing The Chassis Assembly

    Once re-assembly is complete, the unit must be safety-tested in WARNING accordance with local guidelines and proced ures. This safety-test may take the form of an Earth Continuity Test, Hi-Pot Test, etc. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 120: Troubleshooting

    E4416A/E4417A Power Meters Service Guide Troubleshooting Introduction...

  • Page 121: Introduction

    5 RS422 self test connector - 9 way 'D' type female connector with the following pins wired together: – Pin 1 (CTS−)to Pin 9 (RTS−). – Pin2 (Rx−)to Pin 4 (Tx−). – Pin 3 (Tx+)to Pin6 (Rx+). – Pin7 (RTS+)to Pin 8 (CTS+). Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 122 7 GPIB controller and cable - required to apply "*RST" command through the rear panel GPIB connector. In the following flowcharts a bold font indicates the label of a soft/hard key the NOTE user must select. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 123: Figure 6-1 Troubleshooting Guide - Ttl Output

    Select Done Using DVM E2373A or equivalent, Investigate Power Investigate set to VDC, monitor Rmt I/O Meter Failure Sensor failure Connector pin 3 wrt pin 8. Figure 6-1 Troubleshooting Guide - TTL Output 1 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 124 450Ω +/- 10% 0.0V+/-0.5V? No Fault found with Upper Window TTL Over Limit A2 Processor Assy A4 Comms Assy detection circuit - check user Defective Defective application/implementation Figure 6-2 Troubleshooting Guide - TTL Output 1 (continued) Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 125: Figure 6-3 Troubleshooting Guide - Ttl Output

    Select Done Using DVM E2373A or equivalent, Investigate Power Investigate set to VDC, monitor Rmt I/O Meter Failure Sensor Failure Connector pin 4 wrt pin 8. Figure 6-3 Troubleshooting Guide - TTL Output 2 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 126 450Ω +/- 10% 0.0V+/-0.5V? No Fault found with Upper Window TTL Over Limit A2 Processor Assy A4 Comms Assy detection circuit - check user Defective Defective application/implementation Figure 6-4 Troubleshooting Guide - TTL Output 2 (continued) Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 127: Figure 6-5 Troubleshooting Guide - Ttl Inputs

    8. Apply TTL logic 1 pulse to RJ45 connector Meter Failure Sensor Failure pin 6 wrt pin 8. See User’s Guide Ch. 2 for timing. Figure 6-5 Troubleshooting Guide - TTL Inputs Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 128 Did Channel B CAL? No fault found with Channel B TTL Input selection. No fault found with Channel A Input Zero/CAL Check user application/implementation. selection. Check user application/implementation. Figure 6-6 Troubleshooting Guide - TTL Inputs (continued) Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 129: Figure 6-7 Troubleshooting Guide - Ttl Inputs (Continued)

    Measure resistance between Rmt I/O connector pin 5 and connector J4 pin 44. Meter reading 470Ω +/− 10% A2 Processor assy defective A4 Comms assy defective Figure 6-7 Troubleshooting Guide - TTL Inputs (continued) Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 130: Figure 6-8 Troubleshooting Guide - Rs232/422 Interface

    Investigate power Test Pass? meter failure A2 Processor assy A4 Comms assy defective defective No fault found with RS232/422 serial interface check user application/ implementation Figure 6-8 Troubleshooting Guide - RS232/422 Interface Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 131: Keysight 432A Power Meters & 478A Sensors: Additional Information

    E4416A/E4417A Power Meters Service Guide Keysight 432A Power Meters & 478A Sensors: Additional Information Keysight 432A Power Meters: Additional Information Keysight 478A Sensors: Additional Information...

  • Page 132: Keysight 432A Power Meters: Additional Information

    MOUNT RESISTANCE switch determines which bridge resistance is selected. For reference only, typical bridge resistance values are as follows: – 200.05 Ω ≡ – 100.25 Ω ≡ Using incorrect resistance values in these calculations will introduce significant NOTE errors. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 133: Keysight 478A Sensors: Additional Information

    For reference only, typical values of these VRC values are as follows: – 0.0012 Γ 1 ≅ Γ 2 ≅ 0.3317 – Using incorrect VRC values in the Output SWR calculations will introduce NOTE significant errors. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 134: Equipment Required For Performance Tests And Adjustments

    E4416A/E4417A Power Meters Service Guide Equipment Required For Performance Tests And Adjustments Summary Table...

  • Page 135: Summary Table

    VRC must be known for thermistor bridge settings of Keysight 8478B Opt H01 100 Ω and 200 Ω. For further information refer to Appendix Power Sensor E9321A 30 dB Attenuator Keysight 11708A Keysight 8491A Opt 030 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 136 Equipment Required For Performance Tests And Adjustments Table B-1 Equipment Required For Performance Tests And Adjustments (continued) Equipment Required Model Number Critical Specification Usage Power Sensor Cable 2 E9288A P and A required Breakout Box Kit E9288AZ Option K01 Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 137: Measurement Uncertainty Analysis - Power Reference Level Test

    E4416A/E4417A Power Meters Service Guide Measurement Uncertainty Analysis - Power Reference Level Test Measurement Introduction...

  • Page 138: Measurement Introduction

    432A V rear connector and chassis ground comp comp with power applied. R is mount resistance of the 432A meter. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 139: Figure C-1 Measurement Setup

    P o 1 P d – But because a proportion of this total power related to P has been reflected Ps will again cause a reflection giving: P o 1 P s P d ± Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 140 'zero' level of mismatch uncertainty and hence have negligible mismatch when calibrating products. Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 141: Uncertainty Equation

    ) and for 1 mW power (V ) are 5 V with the DMM on the 10 V scale. For the 3458A DMM, the specified accuracy for the 10 volt scale is: 8ppm of Reading + 0.5 ppm of Range Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 142 , two measurements are taken, so the uncertainty is equated to the RSS of using two DMMs; Vol tage measurement Uncertainty U (V 49.25 μV comp U (V 69.65 μV U (V 69.65 μV Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 143: Mismatch

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - u M s ± is the reflection coefficient of the source, which is specified as less than 1.05. VSWR < 1.05 Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 144: Calibration Factor

    1 mW reference. The information that is appropriate is the Uncertainty of the Calibration Factor. The power sensor must be calibrated such that: Uncertainty of Calibration Factor < 0.2% Therefore, U(CF) = 0.002 Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 145: Sensor Calibration Factor Drift

    10 ppm of reading + 0.5 ppm of range with: - 1 ppm of Reading + 0.1 ppm of Range per C (temp coefficient Tcal ±5 and, 3 ppm of Reading (for factory traceability) Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 146: Repeatability

    Measurement Repeatability Results Measurement ADJUST REF. REF. LEVEL TEST 0.999548951 0.999499495 0.999541333 0.999554257 0.999449078 0.999414037 0.999546994 0.999509401 0.999138526 0.9991726 0.999647055 0.999454911 0.999539391 0.999515949 0.999567191 0.999558795 0.999600963 0.999554633 0.999405584 0.999377721 0.999523392 0.999566084 0.999504386 0.999504323 0.999443652 0.999463611 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 147 [a] Measurement 5 was discounted from the calculations as being an extraneous measurement. The readings in Table C-1 are in milli-Watts, therefore the Standard Deviation (worse case) is: - U (Rep) = 0.057 mWatts Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 148: Sensitivity Coefficients (Ci)

    0 4RCFM s Ω [1] The resistance on the 432A Power meters is set to 200 Ω for this test [2] The average Calibration Factor from the previous six sensors on the Production Line Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 149 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9.454 × – dM s 4RCFM M Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 150: Combined Standard Uncertainty (Uc(Y))

    = 2 Normal 2.859 [a] Using Keysight's standard 95.5% confidence the coverage factor is k = 2.00 Expanded Uncertainty The expanded uncertainty is: U= 3.030 mW, as a percent of 1.000 mW: U = 0.303% Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 151: Measuremet Uncertainty Analysis - Instrument Accuracy Test

    E4416A/E4417A Power Meters Service Guide Measuremet Uncertainty Analysis - Instrument Accuracy Test Measurement Introduction The Measurement Uncertainty Analysis described in this Appendix uses different NOTE test equipment from that listed in this Service Guide. However, the equipment used, and the Measurement Uncertainty results, are similar enough to make the analysis useful.

  • Page 152: Measurement Introduction

    −25 dBm to +20 dBm. A conversion from voltage to power is required to achieve this. The measurement setup is shown in Figure D-1. Power Meter T-Piece to measure DC Drive Accurately 8482 Universal Source Figure D-1 Measurement Setup Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 153: Uncertainties

    Test System Power = (Measure voltage × Volts/Power Conversion) + Test Station Error Test Station Error (TSE) is the error contribution of the cables, connectors, noise, NOTE and so forth, that cannot be measured independently. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 154 DUT at 5dB step power level from 25 dBm to +20 dBm. − Standard Uncertainty u(xi): Table D-1 shows the standard deviation of the 30 readings from the DUT at various power levels. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 155 Cond itions: 1 Year Calibration and temperature variance +/ 5 °C with ACAL on − dc volts. Reference: 3458A Operating Manual Appendix A Factory Traceability: From 6 ppm to 0.5 ppm Standard Uncertainty depending on range. Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 156 Error = ((8 ppm × 1.0 V) + (0.3 ppm × 1.0 V)) + (1 ppm × 1.0 V) + 5((0.15 ppm × 1.0 V) + (0.1 ppm × 1.0 V)) = 10.55 μV Percentage Error = 0.001055% Vol tage Error Distribution Standard Uncertainty μ μ 10.55 Rectangular 6.09 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 157 Error = ((10 ppm × 15.8 V) + (0.3 ppm × 100.0 V)) + (0.5 ppm × 15.8 V) + 5((0.15 ppm × 15.8 V) + (0.1 ppm × 100 V)) = 257.75 μV Percentage Error = 0.00163% Vol tage Error Distribution Standard Uncertainty μ μ 257.75 Rectangular 148.8 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 158 The voltage correction at the appropriate points is shown in Table D-2. Table D-2 Voltage Correction Multiplier Power (mW) Vol tage Correction Mul tiplier 1.006577 1.075533 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 159 1.4493 mV 0.0946% μ μ <1.371 0.00946 14.493 mV μ 0.00946% μ 1.371 0.00946 144.93 mV μ 0.00420% μ 6.09 0.042 1.4588 V μ 0.00389% μ 56.8 0.389 15.6 V μ 0.00095% μ 148.8 0.95 Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 160: Sensitivity Coefficients Ci

    ( ) C TSE u TSE C MV u MV Table D-3 shows the combined standard uncertainty at all the power levels from 3 μW ( 25 dBm) to 100 mW (20 dBm). − Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 161 0.000447 mW 0.00089 mW 10 mW 0.00069 mW 0.000389 mW 0.000792 mW 0.00158 mW 31.6 mW 0.0022 mW 0.00095 mW 0.00239 mW 0.00479 mW 100 mW 0.0092 mW 0.00095 mW 0.00924 mW 0.01850 mW Keysight E4416A/E4417A Power Meters Service Guide...

  • Page 162: Expanded Uncertainty Kuc(Y)

    Measuremet Uncertainty Analysis - Instrument Accuracy Test Expanded Uncertainty kuc(y): The Expanded Uncertainty for each power level is given in the table above, using Keysight Technologies's standard 95% confidence level gives a coverage factor of 2. K = 2 Keysight E4416A/E4417A Power Meters Service Guide...
  • Page 163 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2001–2016 Edition 14, January 8, 2016 Printed in Malaysia *E4416-90014* E4416-90014...

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