Keysight n1921a Operating And Service Manual
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Keysight n1921a Operating And Service Manual

Keysight n1921a Operating And Service Manual

P-series wideband power sensor
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Keysight N1921A and
N1922A P-Series Wideband
Power Sensor
Operating and
Service Guide

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Summary of Contents for Keysight n1921a

  • Page 1 Keysight N1921A and N1922A P-Series Wideband Power Sensor Operating and Service Guide...

  • Page 2: Safety Information

    FAR 27.401 or DFAR 227.7103-5 (c), as applicable in any Do not proceed beyond a WARNING technical data. notice until the indicated conditions are fully understood and met. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 3: General Warranty

    Keysight shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or any information contained herein.

  • Page 4: Safety Symbols

    Management Agency of Australia. ISM GRP.1 Scientific and Medical Group 1 Class A This signifies compliance with the CLASS A product. Australia EMC Framework regulations under the terms of the Radio Communication Act of 1992. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 5: Safety Notices

    Do not proceed beyond a caution until the indicated conditions are fully understood and met. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 6: General Safety Information

    Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability for the customer’s failure to comply with these requirements.

  • Page 7: Sound Emission

    This statement is provided to comply with the requirements of the German Sound DIN 45635 T. 19 (Typprufung). – Sound Pressure LpA < 70 dB. – At operator position. – Normal operation. – According to ISO 7779 (Type Test). Keysight N1921A and N1922A Operating and Service Guide...
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  • Page 9: Table Of Contents

    ........40 Characteristics and Specifications Service Keysight N1921A and N1922A Operating and Service Guide...
  • Page 10 Keysight Sales and Service Offices ......47 Keysight N1921A and N1922A Operating and Service Guide...
  • Page 11 Measured rise time percentage error versus signal-un- der-test rise time ......41 Keysight N1921A and N1922A Operating and Service Guide...
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  • Page 13 ....31 Table 2-3 System-level rise and fall time performance test ..34 Keysight N1921A and N1922A Operating and Service Guide...
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  • Page 15 Keysight N1921A and N1922A P-Series Wideband Power Sensor Operating and Service Guide Introduction General Information Calibration Overview of the P-Series Wideband Power Sensors This Chapter introduces you to the P-Series Wideband Power Sensors. It contains the following sections.

  • Page 16: Introduction

    If there is mechanical damage, notify the nearest Keysight office. Keep the damaged shipping materials (if any) for inspection by the carrier and a Keysight representative. See “Keysight Sales and...

  • Page 17: Power Meter And Sensor Cable Requirements

    Any interruption of the protective earth grounding will cause a potential shock hazard that could result in personal injury. Recommended Calibration Interval Keysight Technologies recommends a one-year calibration cycle for the P-Series power sensors. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 18: Table 1-2 Wrench Size And Torque Values

    Table 1-2 Wrench Size and Torque Values Model Connector Wrench Size Torque Value N1921A Type-N (male) 3/4-inch open-end 12 in-lb (135 Ncm) N1922A 2.4 mm (male) 5/16-inch open-end 8 in-lb (90 Ncm) Keysight N1921A and N1922A Operating and Service Guide...

  • Page 19: Calibration

    20. The chapter “Using P-Series Power Sensors” in the P-Series Power Meter User’s Guide explains in more detail the methods used the perform the zero and calibration of the power sensor. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 20: Overview Of The P-Series Wideband Power Sensors

    Overview of the P-Series Wideband Power Sensors The P-Series Wideband Power Sensors has two different models. – The N1921A has a frequency range of 50 MHz to 18 GHz. – The N1922A has a frequency range of 50 MHz to 40 GHz.
  • Page 21 (1 mW, 50 Mhz) a 2.4 mm (f) to N-type (m) adapter is needed as the P-Series Wideband Power Sensor is fitted with a 2.4 mm (m) connector. This adapter is not shipped together with the P-Series Wideband Power Sensor. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 22: Table 1-3 Adapter

    The 2.4 mm (f) to N-type (m) adapter is intended for use only on the 1 mW, NOTE 50 MHz power reference of the power meter. Its function as a calibration reference may be compromised if used for other purposes. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 23 Keysight N1921A and N1922A P-Series Wideband Power Sensor Operating and Service Guide Performance Tests and Adjustments Test Equipment Voltage Standing Wave Ratio (VSWR) Performance Test System-Level Rise and Fall Time Performance Test Zero Set Performance Test in System Level Adjustment...

  • Page 24: Performance Tests And Adjustments

    11730A sensor cable adapter N1911A-200 N-type to SMA adapter N-type (m) to 2.4 mm (f) SMA 11903D 50 Ω characteristic impedance Trigger cable 50 Ω characteristic impedance U2032A BNC (m) to SMB (f) Keysight N1921A and N1922A Operating and Service Guide...

  • Page 25: Voltage Standing Wave Ratio (Vswr) Performance Test

    2 Set the start frequency of the network analyzer to 50 MHz and the stop frequency to 18 GHz (for the N1921A) and 40 GHz (for the N1922A). 3 Calibrate the network analyzer using the appropriate calibration kit (85054A/D for the N1921A and 85056A/D for the N1922A).

  • Page 26: Sensor Accuracy Performance Test

    2 Connect the standard sensor (N8481A/7A) to the N1912A channel A and the incident sensor (N1921/2A) to the N1912A channel B. 3 The test equipment setup is as shown in Figure 2-1. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 27 10 Remove the standard sensor from the N1912A channel A. 11 Connect the device-under-test (DUT, N1921/2A) to the N1912A channel A. 12 The test equipment setup is as shown in Figure 2-2. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 28 2-2. If the test fails, refer to “Adjustment” on page 37. 20 Repeat steps 5 to 19 by sweeping through the power level from –25 dBm to 10 dBm with frequencies from 50 MHz to 18 GHz. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 29 (dB) = P – P ratio INC1 8 Repeat steps 5 to 7 for other frequencies with the same power level. 9 Turn off the RF output of the signal source. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 30 2-2. If the test fails, refer to “Adjustment” on page 37. 20 Repeat steps 5 to 19 by sweeping through the power level from 10 dBm to 18 dBm with frequencies from 26.5 GHz to 40 GHz. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 31: Table 2-2 Sensor Calibration Uncertainty

    1 GHz to 10 GHz 4.0 % 4.4 % 10 GHz to 18 GHz 5.0 % 4.7 % 18 GHz to 26.5 GHz 5.9 % 26.5 GHz to 40 GHz 6.0 % Keysight N1921A and N1922A Operating and Service Guide...

  • Page 32: System-Level Rise And Fall Time Performance Test

    – Trigger cable (U2032A) – Wideband power sensor (N1921/2A) System specification – Rise/fall time: ≤13 ns ±% error – Overshoot: ≤5% Figure 2-5 Measured rise time percentage error versus signal under test rise time Keysight N1921A and N1922A Operating and Service Guide...
  • Page 33 7 Set the channel frequency of the N1911/2A to 1 GHz and the trigger mode to Continuous Trigger Mode. 8 Set the N1911/2A video bandwidth to LOW and the video average to 64. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 34: Table 2-3 System-Level Rise And Fall Time Performance Test

    Pulse period: 10 μs, Duty cycle: 50% Bandwidth: OFF, Power level: 10 dBm, 13 ns Pulse period: 2 μs, Duty cycle: 50% Bandwidth: OFF, Power level: 10 dBm, 13 ns Pulse period: 10 μs, Duty cycle: 50% Keysight N1921A and N1922A Operating and Service Guide...

  • Page 35: Zero Set Performance Test In System Level

    3 Set the GPIB address of the power meter (N1911/2A) and the signal generator (E4438C) to 13 and 19 respectively. 4 Connect the N1921/2A to the signal generator as shown in Figure 2-7. Allow the system to warm up for approximately an hour. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 36 9 The power meter (N1911/2A) and the signal generator (E4438C) must be added to the Instrument Manager. Go to Start > Program > Keysight VEE Pro 9.0 or above Runtime Config > IO Configuration. Select Find to find the connected instrument and Save to save the configuration.

  • Page 37: Adjustment

    N1921/2A. The N1921/2A is required to be returned to Keysight for adjustments. To arrange this, contact the Keysight Service Center. Refer to the last page of this guide for information. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 38 Performance Tests and Adjustments THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 39: 3 Theory Of Operation

    Keysight N1921A and N1922A P-Series Wideband Power Sensor Operating and Service Guide Theory of Operation Theory of Operation...

  • Page 40: Theory Of Operation

    N1921/2A specified measurement ranges. Data from this 4-D model is generated during Keysight's initial factory calibration of the N1921/2A and stored in EEPROM. All the compensation data is downloaded to the power meter/peak power analyzer at power- on or when the N1921/2A is connected.
  • Page 41 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - %Error SignalUnderTestRiseTime Keysight N1921A and N1922A Operating and Service Guide...
  • Page 42 Theory of Operation THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 43: Characteristics And Specifications

    Keysight N1921A and N1922A P-Series Wideband Power Sensor Operating and Service Guide Characteristics and Specifications For the characteristics and specifications of the N1921A and N1922A P-Series Wideband Power Sensor, refer to the datasheet at http://literature.cdn.keysight.com/litweb/pdf/5989-2471EN.pdf.
  • Page 44 Characteristics and Specifications THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 45: Service

    Keysight N1921A and N1922A P-Series Wideband Power Sensor Operating and Service Guide Service General Information Keysight Sales and Service Offices This Chapter introduces you to the P-Series Wideband Power Sensors. It contains the following sections.
  • Page 46 47 for this information. Repair of Defective Sensor There are no serviceable parts inside the P-Series Wideband Power Sensors. If the sensor is defective, it needs to be returned to a Keysight service center. Keysight N1921A and N1922A Operating and Service Guide...

  • Page 47: Keysight Sales And Service Offices

    Keysight Sales and Service Offices In any correspondence or telephone conversations, refer to the power meter by its model number and full serial number. With this information, the Keysight representative can quickly determine whether your unit is still within its warranty period.
  • Page 48 Service THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight N1921A and N1922A Operating and Service Guide...
  • Page 49 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2005–2016 Edition 9, August 26, 2016 Printed in Malaysia *N1920-90007* N1920-90007 www.keysight.com...

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N1922aP seriesN1921a

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