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Ceyear 4992A User Manual

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4992A Radio Test Set
User Manual
China Electronics Technology Instruments Co., Ltd
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Summary of Contents for Ceyear 4992A

  • Page 1 4992A Radio Test Set User Manual China Electronics Technology Instruments Co., Ltd...
  • Page 3 Technology Instruments Co., Ltd will reserve the right to investigate and affix legal liability of infringement. Preface Thank you for purchasing and using 4992A Radio Test Set developed and produced by China Electronics Technology Instruments Co., Ltd. We take meeting your demands as our mission and while offering high quality instruments, we also provide you with technical support and after-sales services.
  • Page 4 Due to the limitations in the author’s knowledge, there may be errors or omissions in this manual. Your comments are highly appreciated. We apologize for any inconvenience that may rise therefrom. Editor January 2018...
  • Page 8 Environment and Safety Instructions I. Safety Protection 1. Safety precautions for the instrument 1) Use the designated packing box in instrument transportation and avoid damages arising from falling or collision in handling. 2) Use a 220V AC three-core stabilized-voltage power supply to power the adapter, so as to prevent damages to internal hardware arising from high-power peak pulse interference.
  • Page 9 We are sure that pack container of products is harmless waste, please save packing container and liner for future transportation or dispose them according to local environmental regulations. 2. Treatment of scrapped articles 1) Parts replaced in maintenance and upgrading of this instrument will be recycled by China Electronics Technology Instruments Co., Ltd.

  • Page 10: Table Of Contents

    CONTENTS SECTION 1 PRODUCT OVERVIEW .................... 1 1 Brief Introduction ........................... 1 2 Product Features ............................ 1 3 Functions ............................... 2 4 Typical application ..........................3 Section 2 Main Technical Indicators ...................... 4 RF source ............................4 2. Audio source (Audio 1and Audio 2) ...................... 5 3.
  • Page 11 1 Display Zone............................20 2. Number input zone ..........................22 3 Functional key zone ..........................22 4 Reset button ............................22 5 Power switch............................22 Section 2 Interface Description ......................24 1. T/R interface ............................24 2. ANT interface ............................24 3.
  • Page 12 Chapter I Overview The following safety notes are used throughout this manual. Familiarize yourself with each of the notes and its meaning before operating this instrument. WARNING denotes a hazard. It calls attention to a procedure WARNING: which, if not correctly performed or not adhered to, could result ...

  • Page 13: Section 1 Product Overview

    Chapter I Overview Section 1 Product Overview 1 Brief Introduction 4992A Radio Test Set is equipped with the unified handheld casing, and characterized by high integration, small size, light weight, easy carrying, friendly interface and easy-to-learn operations. This instrument has the functions of various instruments such as the RF transmitter and receiver analyzer, audio source, audio analyzer.

  • Page 14: Functions

    Chapter I Overview  Friendly human-machine interface and simple operation, thus facilitating the learning and use.  Ethernet and USB interfaces. 3 Functions This instrument is highly integrated with various test instruments, and wholly has the following characteristics:  Duplex testing function; ...

  • Page 15: Typical Application

    To test all performance indicators, various instruments should be switched frequently, which will result in the consumption of a lot of labor, materials and time. 4992A Radio Test Set with integration of various instruments is suitable for full performance tests of various on-board/commercial radios, wireless intercoms, etc.

  • Page 16: Section 2 Main Technical Indicators

    Chapter I Overview Section 2 Main Technical Indicators RF source This instrument includes double independent RF signal sources, which can be separately selected for independent output. Both sources can be combined inside this instrument for output.  Frequency characteristics Frequency range: 2MHz-1000MHz (Available to 500 KHZ) (Source 1) (1 GHz option default) 2MHz～2700MHz (Available to 500 KHZ) (Source 1) (2.7 GHz option)

  • Page 17: Audio Source (Audio 1And Audio 2)

    Chapter I Overview  External AM characteristics Microphone input: Level range: 20mVrms to 350mVrms Frequency range: 300Hz～3kHz Amplitude range: 0-80% Audioinput: Load: 150Ω, 600Ω, 1kΩ, High Z Input level: 0.05-3Vp Frequency range: 300Hz~5kHz Tuning sensitivity: 1%/35mVrms  Internal FM characteristics (Audio 1 and Audio 2) Modulation frequency: 30Hz to 5kHz (acceptable setting: 20Hz-20kHz) Frequency deviation range: max.

  • Page 18: Demodulation Meter

    Chapter I Overview Accuracy: ±1dB (20-43dBm)  RFfrequency error ApplicableRF level range: T/R port: -20dBm to +43dBm ANT port: -80dBm to -10dBm Capture range: 200kHz Resolution: 1Hz Accuracy: 2Hz (time-based)  Received signal strength (RF power within the IF bandwidth of receiver) Display range: dBm: -120 dBm - +43 dBm W: 10pW to 20W...

  • Page 19: Spectrum Analyzer (Optional)

    Chapter I Overview Accuracy: ±10%, with the frequency deviation of 500Hz to 100kHz ±5%, with the frequency deviation of 1kHz to 10kHz and modulation rate of 150Hz to 1kHz 5. Spectrum analyzer (optional) RF input port: ANT port and T/R port Frequency range: 2MHz~1000MHz (1 GHz option default) 2MHz～2700MHz (2.7 GHz option) Sweep bandwidth: 10kHz ~ 998MHz (1 GHz option default)

  • Page 20: Digital Voltmeter

    Chapter I Overview Accuracy: ± (5% of measured value+5mV) (high impedance, 1-gear)  Distortion (THD) Audio frequency: 1kHz Display range: 0 to 100% Resolution: 0.1% Accuracy: ± (5% of measured value+0.1%), 1% to 20%.  SINAD Audio frequency: 1kHz Display range: 0 to 40dB Resolution: 0.1dB Accuracy: ±1.5dB, 8-35dB 7.

  • Page 21: Cable Test

    /year; Temperature stability: 110 (with 25℃ as the reference temperature) Frequency accuracy: ±2ppm (25℃) 4992A Radio Test Set will meet various performance indicators within the given working temperature after 2h ！ CAUTION: storage at the ambient temperature and 15min preheating.

  • Page 22: Input/Output Port

    Chapter I Overview only for reference but not assessment. 11. Input/Output port Table 1-1 Input/Output Port Name Identification Interface type BNC interface RF input/output port BNC interface RF output port BNC interface Audio output port Audio Out BNC interface Audio/DVM input port Audio In/DVM BNC interface GPS signal input port...

  • Page 23: Article I Handling Instructions

    Article I Handling Instructions Article I Handling Instructions...

  • Page 24: Chapter Ii Operation Guide

    Section 2 Safety Instructions The safety of 4992A Radio Test Set conforms to the requirements of GJB3947A-2009. The instrument is not equipped with any part that can be operated by the user. Do not open the instrument casing without permission; otherwise, personal injuries may be caused. In order to ensure the personal safety and proper operation, carefully read the following safety precautions prior to use.

  • Page 25: Selection Of Power Line

    Chapter II Operation Guide In order to ensure the service life of 4992A and the effectiveness and accuracy of measurement, tests should be done under the following conditions. Temperature range: Storage temperature range: -40℃ to +70℃ Operating temperature range: -10℃ to +50℃...

  • Page 26: Electrostatic Protection (Esd)

    Current: 4A (min.) Power supply with built-in battery 4992A can be powered up with the rechargeable lithium ion battery. The battery will be subject to discharge if not used in a long time. Therefore, it must be charged before use. See battery operation details in Section 2.6.

  • Page 27: Input/Output Port Protection

    Section 3 Battery Installation and Replacement 1. Battery description 4992A Radio Test Set is equipped with one high-capacity rechargeable lithium ion battery.

  • Page 28: Battery Installation And Replacement

    It is recommended to purchase the battery of the same model as the accompanying battery. 2. Battery installation and replacement The battery of 4992A Radio Test Set can be easily installed or replaced. The user can install or replace it according to the following diagram. Insert/pull out...

  • Page 29: Battery Life

    Chapter II Operation Guide charging, this indicator will be normally ON in yellow. If charging is done in the operation status, the LED indicator will flicker in green, indicating that the battery is being charged. After charging, the indicator will be normally ON in green. In this case, the battery icon on the right side of the system status bar of the touch screen will be full.

  • Page 30: Section 4 User Inspection

    1 Preliminary check Connect the power adapter of 4992A Radio Test Set to the external power supply. In this case, the power indicator on the front panel will be yellow, indicating that the standby power supply is working normally. Carefully press the soft power switch on the front panel for more than 3 seconds.
  • Page 31 Chapter II Operation Guide Impedance: high impedance 7) Requirement of test results: RF frequency error: 0±2Hz Audio frequency: 1kHz±0.1Hz.

  • Page 32: Chapter Iii Panel Description

    Chapter III Panel Description Chapter III Panel Description Section 1 Description of front panel The front panel of 4992A Radio Test Set front panel is shown in Fig. 3-1. RF interface GPS interface Audio interface Display zone Number input zone...
  • Page 33 Chapter III Front/rear panel description Fig. 3-1 Display Zone Details of various zones are introduced below. ①Instrument window zone The opened instrument window is displayed in this zone, including relevant instrument setting or measurement information. The current parameter setting can be changed by clicking the parameter position or in the right soft menu.

  • Page 34: Number Input Zone

    Chapter III Panel Description “Local” and “Program Control”. If the receiver is in the “Program Control” status, the local mode can be recovered by pressing the [System] hard key. 2. Number input zone The number input zone includes direction keys, knob, ←/– (backspace/minus) and number keys.
  • Page 35 Chapter III Front/rear panel description power switch for more than 3 seconds to turn off the Radio Test Set. Note: “Flicker” of the indicator indicates that the electricity quantity of the battery is not full at present and the battery is being charged.

  • Page 36: Section 2 Interface Description

    Chapter III Panel Description Section 2 Interface Description Audio output Audio device SWR interface ANT interface GPS interface T/R interface Audio/DVM input USB A type Power input SD card slot Mini USB type Fig. 3-3 Interface Description 1. T/R interface This is an RF signal interface and can be applied to send the signal of the internal RF Source 1 or as the receiver input end to receive RF signals to be tested.

  • Page 37: Power Input

    This instrument is equipped with one 10/100Mbps LAN interface of standard 8-pin structure. Two data rates can be selected automatically. This interface can be connected to PC via the network line to realize the program control and data transmission of 4992A Radio Test Set. 11. Mini USB interface It is connected to the external computer (PC).

  • Page 38: Chapter Iv Operation Guidance

    Chapter IV Operation Guidance Chapter IV Operation Guidance This chapter introduces the basic operations of 4992A Radio Test Set. The operation process of this instrument is introduced in details below according to the functions. If [Reset] on the front panel is pressed, the instrument will be ！...

  • Page 39: Section 1Operation Guidance For Rf Transmitter Function

    FM, for modulation output of double audio sources. 1.RF Source 1 The T/R, SWR and ANT port can be applied for output of the RF Source 1 of 4992A. The appropriate output port can be selected according to various power requirements.
  • Page 40 Chapter IV Operation Guidance RF Source 1, or click [RF Source 1] in the right menu to control the ON/OFF state of RF Source 1. If RF Source 1 is ON, the font in the window will be displayed in green, and the current status of RF Source 1 will be displayed in the [RF Source 1OFF ON] soft key of the right menu.
  • Page 41 MIC in the audio box is used as the modulation input. The modulated output can be realized after the modulation type is selected. 3.RF Source 2 RF Source 2 of 4992A is only for the output of ANT port.  Open the window: open and select the RF source window by pressing [Receiver] or pressing [Measurement] and setting the instrument menu.
  • Page 42 If the knob is rotated or [↑] or [↓] is pressed, the current frequency or power will change according to the set step value. We are sorry that 4992A Radio Test Set includes the 50MHz clock signal, and due to the size limitation, the influence on the output channel of the RF source cannot be completely eliminated and the above signal is the main source of stray signal of the instrument.

  • Page 43: Section 2 Operation Guidance For Rf Receiver Function

    This part describes some operations of 4992A Radio Test Set for RF signal reception and measurement. 1.RF power The RF power measurement of 4992A is designed for the RF T/R port only, and the broadband signal power of RF 20-43dBm can be measured. ...
  • Page 44 2.RF frequency error The RF meter of 4992A is used for measuring the frequency error between the input signal and the set frequency point. This is designed for the RF ANT and T/R port. The user can select the appropriate port to input the tested signal according to the power of the input signal.
  • Page 45  Automatic search setting: 4992A has the function of automatic search. The input signal of the port can be searched automatically for conveniences of testing of unknown frequency signals. Click “Automatic Search” in the window or [Automatic Search] in the [Receiver Setting] menu to enable the function of automatic search.
  • Page 46 3. Strength of received signal The RF meter of 4992A can measure the narrow-band signal power within the IF bandwidth of the receiver. It is designed for the RF ANT and T/R port. The user can select the appropriate port for input of the tested signal according to the power range of the input signal.
  • Page 47 4. Amplitude modulation depth The amplitude modulation depth measurement with the demodulation meter of 4992A means the demodulation analysis of the amplitude modulation wave within the IF bandwidth of the receiver. This is designed for the RF ANT and T/R port. The user can select the appropriate port for input of the tested signal, according to the power range of the input port.
  • Page 48 5. Frequency modulation deviation The measurement of frequency modulation deviation with the demodulation meter of 4992A means the demodulation analysis of the demodulation wave within the IF bandwidth of the receiver. This is designed for the RF ANT and T/R port. The user can select the appropriate port for input of the tested signal, according to the power range of the input signal.
  • Page 49 Chapter IV Operation Guidance Fig. 4-10 Display Window of Frequency Modulation Deviation Measurement  Menu calling: click the touch screen, select the demodulation meter as the current active window, and the corresponding menu will be displayed in the right side of the window, as shown in Fig.
  • Page 50 6. Spectrum analyzer (optional) The spectrum analyzer function of 4992A is designed for the RF ANT and T/R port. The user can select the appropriate port for input of the tested signal, according to the power range of the input signal.

  • Page 51: Section 3 Operation Guidance For Cable Test Function

    Section 3 Operation Guidance for Cable Test Function This part describes some operations for online cable testing with 4992A Radio Test Set. 1. Standing wave ratio/return loss The return loss or standing wave ratio (hereinafter referred to SWR) is a kind of expression of reflection characteristics.
  • Page 52 Chapter IV Operation Guidance Fig. 4-13 Return Loss Test Interface  Menu calling: click the touch screen, select the cable test as the current active window, and the corresponding menu will be displayed in the right side of the window, as shown in Fig. 4-13.
  • Page 53 Chapter IV Operation Guidance [ON OFF] setting. The cursor can be dragged into the ideal position by selecting the [Position] soft key, or rapidly positioned by directly selecting the [Peak], [Left Peak] or [Right Peak]. The normal or differential mode can be selected with the [Mode] soft key. In the differential mode, two cursors can be compared intuitively.
  • Page 54 Chapter IV Operation Guidance  Menu calling: click the touch screen, select the cable test as the current active window, and the corresponding menu will be displayed in the right side of the window, as shown in Fig. 4-17.  Measurement setting: ...
  • Page 55 Setting of cable type: click [DTF Test]→[Cable Type] in the right menu and select the cable type. 4992A is provided with a series of commonly used cable models to be called by the user, as shown in Fig. 4-21. Select the corresponding cable mode with the touch screen, knob, [↑] or [↓], and click the [Select] soft key or press the...
  • Page 56 Chapter IV Operation Guidance Note that the speed factor and cable loss are inherent parameters of the cable. In case of any ambiguity, consult the cable ！ CAUTION: specifications or cable manufacturer. The user cannot manually set the speed factor, unit loss, etc. until “User” is set under [Cable Type].
  • Page 57 Chapter IV Operation Guidance Fig. 4-22 DTF Test Curve After frequency setting, the current maximum test distance can be ！ determined (shown in the lower right corner of the display zone of the CAUTION: instrument). The user can properly reduce this distance according the maximum value and the estimated position of the tested fault point.

  • Page 58: Section 4 Operation Guidance For Call Function

    Chapter IV Operation Guidance Section 4 Operation Guidance for Call Function This part describes some operations of 4992A Radio Test Set in the call test. The instrument will be used for transmission and reception in the call. When two instruments are involved in the call, the transmitter and receiver signals can be transmitted through the antenna or connected through the cable.

  • Page 59: Section 5 Operation Guidance For Audio Function

    Setting of audio box: the volume can be properly adjusted between 0% and 100% according to the sound strength of the audio box. Section 5 Operation Guidance for Audio Function This part describes some operations of 4992A Radio Test Set for audio signal generation and measurement. 1. Setting of audio source and noise source 4992A is equipped with double audio sources: Audio Source 1 and 2.
  • Page 60 Chapter IV Operation Guidance Audio Source 1 ON OFF Frequency setting of Audio Source 1 Amplitude setting of Audio Source 1 Fig. 4-26 Audio Source Setting Window For example, click [Noise Source] in the right menu, open [Noise Source], and the window shown in Fig.
  • Page 61 Chapter IV Operation Guidance 2. Setting of audio meter The audio meter of 4992Ahas four test functions: frequency, voltage, SINAD and distortion. It is designed for the frequency, AC voltage and distortion analysis and measurement of external audio signals. The user should estimate the level range of the input signal and select the appropriate range.
  • Page 62 3. Setting of digital voltmeter The digital voltmeter of 4992A is deigned for AC or DC voltage measurement of DVM input ports. The user can select the coupling mode according to the characteristics of the tested signal, estimate the level range of the input signal and select the appropriate range.
  • Page 63 4. Setting of audio oscilloscope The oscilloscope function of 4992A has the function of intuitive measurement display of low-frequency signals of the external audio, DVM or interval receiver signal after demodulation. This is designed for the external audio/DVM interface. The user should estimate the level range of the input signal, and select the appropriate range.
  • Page 64 Chapter IV Operation Guidance Time setting Amplitude setting Setting of reference position Setting of trigger status Setting of cursor status Port setting Fig. 4-34 Oscilloscope Display Window  Menu calling: click the touch screen, select the oscilloscope window and the relevant setting menu will pop up in the right side.
  • Page 65 Chapter IV Operation Guidance Fig. 4-37 Oscilloscope DVM Setting Window Click the [Range Selection] soft key in the right side of the touch screen, as shown in Fig. 4-38, and select the appropriate range. Fig. 4-38 Oscilloscope DVM Range Selection Window ...
  • Page 66 Chapter IV Operation Guidance Fig. 4-40 Oscilloscope Trigger Mode Selection Window  Display of measurement results:  In the operation interface shown in Fig. 4-34, click [Time/Interval], [Amplitude/Interval], [Reference Position] and other soft keys in the right menu of the touch screen for port setting, and set the appropriate time, amplitude, reference position, etc.
  • Page 67 Chapter IV Operation Guidance The oscilloscope window is applied for auxiliary monitoring and display ！ CAUTION: of low-frequency signals. It is separately used in general, except that the RF source and audio source are enabled at the same time.

  • Page 68: Chapter V Menu Description

    Chapter V Menu Description Chapter V Menu Description The keys in [] are hard keys, i.e. keys on the front panel. Soft menu items corresponding soft keys are provided in [ ]. 1 Measurement [Measurement] The measurement instrument list selection window will pop up, including the RF source, audio source, cable tester, RF meter, audio meter, oscilloscope, demodulation meter, digital voltmeter and spectrum analyzer, as shown below.
  • Page 69 Chapter V Menu Description Port StepSet RFGen FreqStep Port > 1 kHz AmplStep Generator1 1 dBm Freq 1 GHz Ampl < Return -65 dBm Generator2 < Return Freq 400 MHz Ampl -100 dBm StepSet > Fig. 5-2 [RF Source] Function Menu [Output port] Select the signal output port, including [SWR], [ANT] and [T/R].
  • Page 70 Chapter V Menu Description Set the frequency step and amplitude step. The step can be adjusted with the number keys, step keys or knob. 1.1.1 Modulation source The modulation source can be opened when the RF source is ON. Open the modulation source, select the modulation source window, set the window focus as the modulation source, and the [Modulation Source] function menu will pop up, including [Carrier], [Modulation Source], [Internal Audio Setting], [External Audio Impedance], [Amplitude Modulation AM OFF ON] and...
  • Page 71 Chapter V Menu Description Select the carrier. At present, RF Source 2 has no function of modulation. Therefore, [RF Source 1] is selected. [Modulation Source] Select the modulation source type, including [Internal Audio], [External Audio] and [External MIC]. [Internal audio setting] Set the internal audio, i.e.
  • Page 72 Chapter V Menu Description RFMeter SignalUnit RFPowerUnit AvgNum RFPower μV μV CalFrep dBμV dBμV 1GHz SignalUnit > RFPowerUnit > < Return < Return Limits Fig. 5-4 [RF Meter] Menu [Average OFF ON] Enable or disable the function of continuously averaging test results. [Average frequency] Set up average frequency.
  • Page 73 Chapter V Menu Description the measured value is smaller than the lower alarm limit, the background will become blue. 1.2.1 Receiver Setting When the RF meter window is opened, the receiver setting window will pop up at the same time. Select the receiver setting window, and the [Receiver Setting] menu will pop up, including [Demodulation Type], [Input Port], [Frequency], [Reference], [IF Bandwidth], [Audio Filter], [Center Frequency Step] and [Search Mode].
  • Page 74 Chapter V Menu Description adjusted with the number keys, step keys or knob. The reference level range is -80dBm to 50dBm. [Intermediate-frequency bandwidth] Select the IF bandwidth: 5kHz, 6.25kHz8.33kHz, 10kHz, 12.5kHz, 25kHz, 30kHz, 60kHz, 100kHz, 300kHz or 600kHz. [Audio filter] Select the audio filter: 0.3-20kBP, 0.3-5kBP, 0.3-3kBP, 0.3HP, 15kLP、5kLP, 3kLP or 0.3kLP.
  • Page 75 Chapter V Menu Description Enable or disable the function of continuously averaging measurement results. [Average frequency] Set up average frequency. [Distortion type] Set the distortion type: THD and THD+N. The default setting is THD. [Output port OFF ON] Open or close the audio output port. [Output port] Set the audio output port: [Audio Output] and [Device+Output].
  • Page 76 Chapter V Menu Description AudioGen Generator1 Noise StepSet Prot Generator1 Noise FreqStep Generator1 AudioOut > 1 kHz Freq Ampl AudioAmpl Generator2 Set+Out > 1 kHz 1 Vp 0.01 Vrms Ampl NoiseAmpl Noise > 1 Vrms 0.01 Vp Volume < Return 50 % StepSet <...
  • Page 77 Chapter V Menu Description ON], [Averaging Times], [Distortion Type], [Voltage Unit], [Alarm Setting], [Impedance], [Range] and [Zero Calibration]. The menu structure is as follows. AudioMeter VoltUnit Impedance Range 150Ω 1~30V AvgNum 600Ω 0.01~3V DistType dBμV 1kΩ Auto THD+N VoltUnit HighZ >...
  • Page 78 Chapter V Menu Description Set the input impedance of the audio meter: [150Ω], [600Ω], [1kΩ] or [High Impedance]. The default setting is high impedance. [Range] Set the range of the audio meter: [1-30V], [0.01-3V] or [Auto]. The default range is 0.01-3V. [Zero correction] Calibration the zero position of the audio meter.
  • Page 79 Chapter V Menu Description [Resolution] Select the display resolution: [1], [0.1], [0.01] or [0.001]. The default resolution is 0.001. [Average OFF ON] Enable or disable the function of averaging the measured values. [Average frequency] Set up average frequency. [Zero correction] Calibration the zero position of the audio meter.
  • Page 80 Chapter V Menu Description Markers FreqSet Type Marker Center 1 2 3 501 MHz Switch Span 998 MHz AntCable Mode Start FreqSet Normal Delta 2 MHz Stop Type SetPos LOSS > 1 GHz Peak Markers > LeftPeak DisplaySet < Return <...
  • Page 81 Chapter V Menu Description The [Cable Test Type] soft menu will pop up, including [SWR], [DTF], [RL] and [LOSS]. [Test Type] →[SWR] Select the voltage SWR test as the test type. [Test Type] →[DTF] Select the DTF test as the test type. [Test Type] →[RL] Select the return loss test as the test type.
  • Page 82 Chapter V Menu Description [DTF test] → [Unit loss] Set the unit loss of the cable. [DTF test] → [Estimated length] Set the estimated length of the cable. [Calibration] The soft menu related to calibration will pop up, including [Start Calibration], [Open Circuit], [Short Circuit], [Matching] and [Complete Calibration].
  • Page 83 Chapter V Menu Description Oscillo Trigger TriggerMode Cursors AudioSet Time/div Mode Cursor Auto External Auto 2 mS Level/div Edge Switch Normal Demod 100　mV Rising Falling Position Level Mode Single Level Time TriggerTime Trigger > 0 nS Cursors ExternalSet > > <...
  • Page 84 Chapter V Menu Description fault debugging, including [Trigger Mode Auto Normal], [Pulse Edge Rising Falling], [Trigger Level] and [Trigger Position]. [Trigger] →[Trigger Mode] Switch the trigger mode: Auto, Normal and Single. If “Auto” is selected, the sawtooth voltage will be generated automatically by the scanning circuit. No matter whether there is a signal to be tested, the bright scanning line will appears on the oscilloscope screen.
  • Page 85 Chapter V Menu Description knob or step keys or by dragging the touch screen. [Cursor] →[Mode Amplitude Time] Switch the cursor mode into the amplitude or time mode. This key is available when the current cursor is ON. In the amplitude mode, the amplitude of the current cursor position is displayed in the cursor display area of the screen.
  • Page 86 Chapter V Menu Description [Center Frequency], [Center Frequency Step], [Sweep Width], [Reference], [Resolution Bandwidth], [Input Port T/R ANT], [Cursor] and [Advanced]. If the spectrum analyzer is ON, the RF meter and demodulation meter will not be available. The menu structure is as follows. Marker2/2 DetectType Marker1/2...
  • Page 87 Chapter V Menu Description keys, step keys or knob. The amplitude step is 1dBm. The reference level corresponds to the top value of the coordinate grid. The signal measured at the reference level is the most accurate. The input attenuator is associated with the reference level, and can be adjusted automatically to avoid input signal compression.
  • Page 88 Chapter V Menu Description differential mode is ON, a reference cursor will be generated in the position of the active cursor. The frequency difference displayed by the reference cursor is the frequency difference between the reference cursor and corresponding normal cursor. The initial cursor and normal cursor are overlapped.

  • Page 89: Transmitter

    Chapter V Menu Description [Advanced]→[SPAN/RBW] Set the SPAN/RBW proportion. [Advanced] →[Average OFF ON] Enable or disable the function of continuously averaging the frequency values. [Advanced]→ [Averaging number] Set up average frequency. [Advanced]→ [Detection type] Set the detection type: [Normal], [Positive Peak], [Negative Peak], [Averaging], [Sampling] and [Root Mean Square].

  • Page 90: Call

    Chapter V Menu Description 6 Call [Call] The test instrument window related to audio will pop up, including four functional windows: “RF Source”, “Modulation Source”, “Demodulation Meter” and “Receiver Setting”. For specific settings of corresponding menus, refer to Section 1.1, 1.1.1, 1.3 and 1.2.1 of this chapter. 7 Memory/call Press [File], and the menu of file saving and calling function will pop up, including the saving status and calling status.
  • Page 91 Chapter V Menu Description System1/2 System2/2 Language Temperature DeviceInfo 简体中文 40℃ Message FreqCal English DeviceID Date 1401001 TouchCal Activation Return NetworkSet Language Close > English About CustomValue > Next Return Fig. 5-14[System] Menu [Equipment parameters] Display the device information, including the model, serial number, application program version, CPLD version, FPGA version and operating system version.
  • Page 92 Chapter V Menu Description prompts on the screen. [GPS OFF ON] Enable or disable the GPS positioning function. [Measurement OFF] Close the windows of all measurement functions. [About] The “About” window will pop up. [Internal temperature] Display the internal temperature of the instrument. [LO frequency calibration] The LO frequency calibration window will pop up.

  • Page 93: Article Ii Technical Specifications

    Article II Technical Specifications...

  • Page 94: Chapter Vi Operating Principle

    Article II Technical Specifications Chapter VI Operating Principle The tester is comprehensively integrated with various functions such as RF signal source, RF power measurement, received signal strength indication (RSSI), RF frequency error measurement, AM modulation/FM frequency deviation measurement, audio signal generator, base-band modulation/demodulation device, audio SINAD measurement, audio distortion measurement, audio frequency measurement, RF standing wave ratio measurement, etc., thus realizing rapid testing of comprehensive parameters of the radio.
  • Page 95 Chapter VI Operating principle interface/display drive and relevant power circuits. On one hand, the overall control can be coordinated. On the other hand, battery charging can be managed and the overall power supply can be provided. Specifically, the full duplex connection between the tested radio and instrument can be realized by the RF module.

  • Page 96: Chapter Vii Performance Feature Test

    Table 7-1 Recommended Devices for 4992A Radio Test Set Recommended Instrument name...
  • Page 97 2ppm, in combination of various influencing factors. b) Test block diagram and meters RF input ANT output Agilent 5350B 4992A Frequency meter Rradio Test Set Fig. 7-1 Block Diagram of Frequency Range and Resolution Test of RF Source Instrument / equipment:...
  • Page 98 Sensor(recommended model: 8710 and NRP-Z37) One N/BNCadapter One RF cable (80cm) RF input SWR/T/R/ANT port output 3923 4992A Receiver Rradio Test Set Fig. 7-2 Block Diagram of Output Power Range, Accuracy, Spectrum Purity and Modulation Test of RF Source c) Test steps 1) As shown in the figure, connect the test instrument, turn on it and warm it up for 30min.
  • Page 99 Chapter VII Performance feature test 9) Close the output of RF Source 1, and open RS Source 2. 10) Set the signal frequency, power and output port of RF Source 2 of the test instrument according to Table A.3, and record the test result into the corresponding part of Table A.3. 3.
  • Page 100 Chapter VII Performance feature test 2) Open the RF source window by pressing the [Receiver] hard key or pressing the [Measurement] hard key and setting the instrument menu. Set it as follows. Port: SWR RF Source 1 Power: -5dBm RF Source 1: ON Set the output frequency of RF Source 1 as 2MHz and 100MHz, and increase it step by step to 100MHz to 1000MHz.
  • Page 101 Chapter VII Performance feature test RF Source 1: ON 3) Set the spectrum analyzer as follows. starting frequency: 0Hz ending frequency: 1.5GHz Reference level: 0dBm 4) Measure non-parasitic harmonics by the standard frequency and standard frequency difference function. Change the output frequency of RF Source 1 into 99MHz, and increase it step by step to 100-999MHz.
  • Page 102 Chapter VII Performance feature test Modulation type: AM Internal Audio Source 1: ON measurement mode measuring receiver into amplitude modulation/demodulation mode, the detector into the average peak mode and the filter as 50Hz HP and 15kHz LP. 6) Set the modulation rate and amplitude modulation depth of the test instrument according to Table A.7, and record the test result of the measuring receiver in Table A.7.
  • Page 103 2Hz. b) Test block diagram and meters Audioinput Audio output Audio analyzer 4992A Rradio Test Set Fig. 7-3 Connection Diagram of Audio Source Test Instrument / equipment: Audio analyzer (recommended model: VA-2230A and Agilent 8903A) One BNC cable (100cm) c) Test steps 1) As shown in the figure, connect the device, start it and warm it up for 30min.
  • Page 104 Test block diagram and meters RF input Audio output port Spectrum analyzer 4992A Rradio Test Set Fig. 7-4 Block Diagram of Dual-tone Output Capability of Audio Source...
  • Page 105 Attenuator RF input group Radio T/R input port frequency 2432 38701Esolid-state power amplifier 4992A output Rradio Test Set Power meter & sensor radio tester E4438 signal source Fig. 7-5 Block Diagram of RF Power Test Instrument / equipment: Signal source (recommended model: 1441A, E4438, etc.)
  • Page 106 Chapter VII Performance feature test Solid-state power amplifier(recommended model: S41-20, etc.) Power meter(recommended model: 2432, 2434, etc.) Power sensor(recommended model: 23211, 71712, N9304, etc.) Attenuator: two 50W/20dB Attenuators N/BNCadapter: one RF cable: two (120cm) c) Test steps 1) As shown in the figure, start the instrument and warm it up for 30min. 2) Perform zero adjustment and calibration of the power meter and power sensor.
  • Page 107 200kHz, and the accuracy is 2Hz (time base error: +2Hz). b) Test block diagram and meters ANT input SWR output 4992A Rradio Test Set Fig. 7-6 Block Diagram of RF Frequency Error Test Instrument / equipment: One BNC cable (30cm) c) Test steps 1) Connect the device as shown in the figure, start it, and warm it up for 30min.
  • Page 108 Chapter VII Performance feature test 2) Open the RF source window of the tested device by pressing the [Measurement] hard key and setting the instrument menu. Set it as follows. Output port: SWR Frequency of RF Source 1: 500MHz RF Source 1Power: -10dBm RF Source 1: ON 3) Open the RF meter window of the tested device by pressing the [Measurement] hard key and setting the instrument menu.
  • Page 109 Chapter VII Performance feature test Radio frequency ANT or T/R input output E4438C 4992A Synthetic Rradio Test Set signal source Fig. 7-7 Connection Diagram of Received Signal Strength Test Instrument / equipment: Synthetic source(recommended model: E4438C) N/BNC adapter: one RF cable: one (80cm) c) Test steps 1) Connect the device as shown in the figure, start it, and warm it up for 30min.
  • Page 110 Chapter VII Performance feature test 2) Reset E4438C signal source and set it as follows. Frequency: 500MHz; Power: -10 dBm AM modulation: ON Modulation rate: 1kHz Modulation depth: 30% 3) Open the demodulation meter of the tested device by pressing the [Transmitter] hard key or pressing the [Measurement] hard key and setting the instrument menu.
  • Page 111 2MHz to 1000MHz. b) Test block diagram and meters RF output SWR RF input ANT 4992A Rradio Test Set Fig. 7-8 Connection Diagram of Frequency Range Test of Spectrum Analyzer Instrument / equipment: BNC cable: one (30cm) c) Test steps 1) Connect the RF input and output end of the tested device as shown in the figure.
  • Page 112 -130dBm (bandwidth: 10kHz; reference level of receiver: ≤-70dBm) b) Test block diagram and meters ANT port for RF input Calibration kit 4992A Rradio Test Set Fig. 7-9 Connection Diagram of Average Noise Level and Residual Response Display Test of Spectrum Analyzer...
  • Page 113 Chapter VII Performance feature test c) Test steps 1) As shown in the figure, connect the ANT input port of the tested device to the matching load. 2) Open the spectrum analyzer window by pressing the [Measurement] hard key and setting the instrument menu.
  • Page 114 Chapter VII Performance feature test 4992A 2432 Rradio Test Set Power meter & sensor RF input ANT port T/R port Attenuator group Radio Radio frequency frequency output RF input output E4438C 38701E Signal Amplifier generator Fig. 7- 10 Connection Diagram of In-band Power Accuracy Test of Spectrum Analyzer...
  • Page 115 Chapter VII Performance feature test the T/R port of the tested device. 7) Set the cursor of the spectrum analyzer to the maximum peak. If the power reading is 43dBm±3dB and the spectrum analyzer is not subject to IF overload, the upper limit of the power measurement range of the spectrum analyzer is more than or equal to +43dBm.
  • Page 116 Chapter VII Performance feature test a) Test items The output of the high-accuracy signal source and the level test result of the power meter are applied as the benchmarks to check the level test accuracy of the spectrum analyzer. The accuracy requirement is ±3dB.
  • Page 117 15Hz to 20kHz, and the frequency accuracy is 2Hz. b) Test block diagram and meters Audio output Audioinput Audio 4992A generator/analyzer Rradio Test Set Fig. 7-11 Connection Diagram of Audio Frequency Test Instrument / equipment:...
  • Page 118 Test block diagram and meters Audioinput Audio output Audioinput Audio analyzer ZN5541 4992A Audio distortion source Rradio Test Set Fig. 7-12 Connection Diagram of Audio Distortion Test Instrument / equipment: Audio distortion source(recommended model: ZN5541) Audio analyzer (recommended model: VA-2230A)
  • Page 119 Chapter VII Performance feature test Adder: 20Hz to 1kHz In the case of fundamental wave output, adjust the voltage of the fundamental wave, until the output voltage amplitude is about 1V. In the case of distortion wave output, adjust the harmonic voltage, until the output voltage amplitude is about 1V.
  • Page 120 Chapter VII Performance feature test 3) Set the audio analyzer as follows: Input channel: Channel L ON Measurement mode: SINAD INPUT: 100kΩ UNBAL SP: SLOW 4) Set the distortion degree of ZN5541 audio distortion source according to the requirements of Table A.25, and record the distortion test results of the audio analyzer.
  • Page 121 Test block diagram and meters Radio Audio/DVM input frequency Agilent 33250 output 4992A Rradio Test Set Function generator ig. 7-13 Connection Diagram of Measurement Accuracy Test of Oscilloscope Instrument / equipment: Function generator (recommended model: Agilent 33250A and Agilent 8903A)
  • Page 122 Chapter VII Performance feature test Impedance: High Z 3) Open the oscilloscope window of the tested device by pressing the [Measurement] hard key and setting the instrument menu, and set it as follows: Time/interval: 1ms Amplitude/interval: 100mV Reference position: 4 Trigger: trigger mode: normal Pules edge: rising Trigger level: 0V...
  • Page 123 The indicator requirements are as follows: 1.10-10.00dB (2MHz to 10MHz), 1.10-15.00dB (10MHz to 1000MHz). b) Test block diagram and meters SWR port Calibration kit 4992A Rradio Test Set Test Fig. 7-14 Connection Diagram of SWR Measurement Range Instrument / equipment:...
  • Page 124 The indicator requirement is ±10% b) Test block diagram and meters Tested cable SWR port Open-circuit 4992A load Rradio Test Set Fig. 7-15 Connection Diagram of DTF Test Instrument / equipment: N type calibration kit(recommended model: 31101)
  • Page 125 Chapter VII Performance feature test Appendix A Schedule: Test Results of Performance Characteristics of 4992A Radio Test Set Instrument No.: Test Personnel: Test Condition: Test Date: YY/MM/DD Table A.1 Function Test of 4992A Radio Test Set Test Item No. Test Item Name...
  • Page 126 Chapter VII Performance feature test A.3(continued) Record Table of Output Power Range and Accuracy Test of RF Source Frequency Measured Power(dBm) Acceptable range Conclusion source (MHz) value(dBm) 0dBm±2dB source 2 -5dBm±2dB -30dBm±2dB (ANT) -50dBm±2dB -70dBm±2dB -100 -100dBm±2dB 0dBm±2dB -5dBm±2dB -30dBm±2dB (ANT) -50dBm±2dB -70dBm±2dB...
  • Page 127 20dBm 20dBm1dB 50MHz 20dBm 20dBm1dB 800MHz 20dBm 20dBm1dB 43dBm 43dBm1dB 1,000MHz 20dBm 20dBm1dB 43dBm 43dBm1dB Table A.14 Test Records of RF Frequency Error Measurement Accuracy Measured value of 4992A Acceptable range Synthetic source setting Conclusion (Hz) (Hz) 2 500MHz -10dBm...
  • Page 128 3 -110 3 3 3 Table A.16 Records of Am Demodulation Measurement Accuracy Modulation depth of synthetic source Acceptable range Measured value of 4992A Conclusion 30%5% 50%5% 90%5% Table A.17 Records of FMDemodulation Measurement Accuracy Modulation rate Frequency modulation Measured value of...
  • Page 129 ≤-70 ≤-80dBm Table A.21 Test Records of Input Power Measurement Range of Spectrum Analyzer Acceptable power range Conclusion Port Measured value of 4992A (dBm) High end: +43dBm3dB T/R (999MHz) Low end: ≤-50dBm High end: -10dBm3dB ANT (499MHz) Low end: ≤-110dBm Table A.22 Test Records of Amplitude Measurement Accuracy of Spectrum Analyzer...
  • Page 130 Chapter VII Performance feature test -703 -903 -110 -1103 Table A.22 (continued) Test Records of Amplitude Measurement Accuracy of Spectrum Analyzer Measured value of 4992A Acceptable range Conclusion Port Frequency Input power (dBm) (dBm) (dBm) 203 03 3MHz -203 -503 203...
  • Page 131 50.5 V DVM input 0.1V 0.10.01V 0.1V~3V 10.1V 30.3V Table A.29 Test Records of Horizontal Measurement Accuracy of Oscilloscope Width of tested pulse signal Measured value of 4992A Error Conclusion Acceptable range ms() (ms) 3% Table A.30 Cable Test Records Conclusion...

  • Page 132: Article Iii Maintenance Instructions

    Article III Maintenance Instructions Article III Maintenance Instructions...

  • Page 133: Chapter Viii Failure Information Description And Repair Method

    This chapter can help you to find problems and receive after-sales services, including the explanation of internal error information of the Radio Test Set. If any problem occurs in operation of 4992A Radio Test Set or you want to purchase relevant components, options or accessories, we will provide the complete after-sales services.

  • Page 134: Section 2 Rework Method

    Section 2 Rework Method If any problem of 4992A cannot be solved easily, contact us by phone or fax. If the instrument has to be returned for repair, pack it according to the following steps. 1) Prepare one copy of paper file describing the instrument failure, and place it into the packing box together with the tester.

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