B+K precision 2165A Instruction Manual
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B+K precision 2165A Instruction Manual

Spectrum analyzers
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INSTRUCTION
MANUAL
SPECTRUM ANALYZERS
MODELS
2165A
2620A
2625
2630

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Summary of Contents for B+K precision 2165A

  • Page 1 INSTRUCTION MANUAL SPECTRUM ANALYZERS MODELS 2165A 2620A 2625 2630...

  • Page 2: Test Instrument Safety

    However, remember that high voltage may 8. B+K Precision products are not authorized for use in appear at unexpected points in defective equipment. any application involving direct contact between our product and the human body, or for use as a critical 3.
  • Page 3 Instruction Manual Models 2615A, 2620A, 2625, 2630 SPECTRUM ANALYZERS...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS Page Page TEST INSTRUMENT SAFETY ..Inside front cover INTRODUCTION TO SPECTRUM ANALYSIS ..17 SPECIFICATIONS ........... 5 General ..............17 OPTIONAL ACCESSORIES ........6 Types of Spectrum Analyzers ........17 GENERAL INFORMATION ........7 Spectrum Analyzer Requirements ......18 Symbols ..............

  • Page 5: Specifications

    SPECIFICATIONS Frequency Input Frequency range: Input impedance: 50Ω 0.15 MHz to 1050 MHz (–3 dB) (Models 2625 and 2630) Input connector: BNC 0.15 MHz to 500 MHz (–3 dB) (Models 2615A and Input attenuator: 0 to 40 dB (4 x 10 dB steps) 2620A) Input attenuator accuracy: ±1 dB/10 dB step Center frequency display accuracy: ±100 kHz...

  • Page 6: Optional Accessories

    OPTIONAL ACCESSORIES Near Field “Sniffer” Probe Set; Model PR-261 Antenna Kit; Model AN-18 The PR-261 is the ideal tool kit for the investigation of Broad band antenna is useful for radiated signal RF electromagnetic fields. It is indispensable for EMI measurement.

  • Page 7: General Information

    GENERAL INFORMATION The Models 2615A, 2620A, 2625, and 2630 spectrum ana- lyzers are easy to operate. The logical arrangement of the controls allows anyone to quickly become familiar with the operation of the instrument, however, experienced users are also advised to read through these instructions so that all functions are understood.

  • Page 8: Operating Conditions

    Use of patched fuses or short-circuiting of the fuseholder is before the instrument is put into operation. The instrument not permissible; B+K Precision assumes no liability should be kept in a clean and dry room and must not be whatsoever for any damage caused as a result, and all...

  • Page 9: Introduction

    INTRODUCTION General Models 2620A and 2630 each include a tracking generator. This generator provides sine wave voltages within the The spectrum analyzer permits the detection of spectrum frequency range of 0.1 to 1050 MHz for Model 2630 and 0.1 components of electrical signals in the frequency range of 0.15 to 500 MHz for Model 2620A.

  • Page 10: Controls And Indicators

    CONTROLS AND INDICATORS The front panel controls of the instruments are shown in 9. CENTER FREQUENCY – Coarse/Fine. Both rotary knobs are used for center frequency setting. The center Figures 3 through 6 and are explained below. frequency is displayed at the horizontal center of the screen.
  • Page 11 CONTROLS AND INDICATORS Fig. 3. Model 2615A Front Panel Fig. 4. Model 2620A Front Panel The reference level is represented by the upper As previously pointed out, the maximum permissible input horizontal graticule line. The lowest horizontal voltages may not be exceeded. This is extremely important graticule line indicates the baseline.
  • Page 12 CONTROLS AND INDICATORS Fig. 5. Model 2625 Front Panel Fig. 6. Model 2630 Front Panel Consequently, input signals might be applied The highest attenuation (4 x 10 dB) and the highest with excessive levels outside the displayed usable frequency range (highest scanwidth setting) frequency range leading to the destruction of should be selected prior to connecting any signal to the the input attenuator and/or the 1st mixing stage.
  • Page 13 CONTROLS AND INDICATORS This permits the detection of any spectral lines which are The center frequency is indicated by the vertical within the maximum measurable and displayable graticule line at middle of the horizontal axis. If the frequency range, if the center frequency is set to 500 MHz center frequency and the scanwidth setting are correct, for Models 2625 and 2630 or 250 MHz for Models 2615A the X axis has a length of 10 divisions.
  • Page 14 CONTROLS AND INDICATORS TRACKING GENERATOR CONTROLS 23. TRACK GEN. The tracking generator is activated (Models 2620A and 2630) when this button is engaged. When activated, a sine signal can be obtained at the OUTPUT BNC 21. ATTN. (ATTENUATOR). Output level attenuator connector at a frequency determined by the spectrum with four 10 dB attenuators which allow the signal analyzer.

  • Page 15: Calibration

    CALIBRATION Vertical Calibration (Models 2625 and 2630) A: A single spectral line (–27 dBm) appears on the screen. The spectral line maximum is now adjusted with the Y-POS. control (12) and placed at the top graticule line of the screen. Prior to calibration, ensure that all input attenuators (14) are All input attenuators switches have to be released.
  • Page 16 CALIBRATION BANDWIDTH (10) kHz. D: Set the generator frequency to 50 MHz. If the 50 MHz SCANWIDTH (15) to 50 MHz/div. After the center spectral line is not on the 2nd. graticule line from left, it frequency is set to 250 MHz, a generator signal must be should be aligned using the X-AMPL.

  • Page 17: Introduction To Spectrum Analysis

    Introduction to Spectrum Analysis General The swept frequency responses of a filter or amplifier are examples of swept frequency measurements possible with a spectrum analyzer. These measurements are simplified by The analysis of electrical signals is a fundamental problem using a tracking generator. for many engineers and scientists.

  • Page 18: Spectrum Analyzer Requirements

    Introduction to Spectrum Analysis It is important that the spectrum analyzer be more stable than The LO frequency is mixed with the input signal to produce the signals being measured. The stability of the analyzer an IF (intermediate frequency) which can be detected and depends on the frequency stability of its local oscillators.

  • Page 19: Sensitivity

    Introduction to Spectrum Analysis Sensitivity Spectrum Analyzer Sensitivity Sensitivity is a measure of the analyzers’ ability to detect Specifying sensitivity on a spectrum analyzer is somewhat small signals. The maximum sensitivity of an analyzer is arbitrary. One way of specifying sensitivity is to define it as limited by its internally generated noise.

  • Page 20: Frequency Response

    Introduction to Spectrum Analysis Notice that the spurious-free measurement range can be The tracking generator signal is generated by synthesizing extended by reducing the level at the input mixer. The and mixing two oscillators. One oscillator is part of the only limitation, then, is sensitivity.
  • Page 21 Introduction to Spectrum Analysis...

  • Page 22: Appendix-Dbm Conversion

    APPENDIX - dBm CONVERSION The most common measurement of RF signal levels is in Some users measure signal level in dBmV where 0 dB equals 1 millivolt, in dBμV where 0 dB equals 1 micro- dBm where 0 dBm equals 1 milliwatt across 50 ohms (224 mV).

  • Page 23: Customer Support

    INSTRUMENT REPAIR SERVICE Because of the specialized skills and test equipment required for instrument repair and calibration, many customers prefer to rely upon B+K PRECISION for this service. We maintain a network of B+K PRECISION authorized service agencies for this purpose.

  • Page 24: Warranty Service Instructions

    Service Information Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device.

  • Page 25: Limited One-Year Warranty

    LIMITED ONE-YEAR WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of one year from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.
  • Page 26 NOTES...
  • Page 28 22820 Savi Ranch Parkway • Yorba Linda, CA 92887 v110409 Printed in China...

This manual is also suitable for:

2620a26252630

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