Ceyear 3943B User manual

Document No.:
AV2.602.1000SSCN
Version No.
Technical status identification:
Confidential:
Non-confidential
3943B Monitoring Receiver
Operations Manual
Prepared by:
Reviewed by:
Standardized by:
Countersigned by:
Approved by:
Ceyear Technologies Co., Ltd.
April 2021

3943B Monitoring Receiver
User's Manual
Ceyear Technologies Co., Ltd.

Foreword
Thanks for choosing the 3943B
monitoring receiver developed
and produced by
Ceyear Technologies Co., Ltd.
We will spare no efforts to meet
your requirements, provide you
with high-quality measuring
instruments, and offer you
first-class after-sales service.
We‘ve always been devoted to
offering ―top-quality and
thoughtful service", and
providing satisfactory products
and services is our
commitment to users.
Manual No.
AV2.602.1000SS
Version
C.2 2021.04
Ceyear Technologies Co., Ltd.
Manual Authorization
The contents of this manual are
subject to change without
notice. The power to interpret
the contents of and terms used
in this Manual rests with
Ceyear Technologies Co., Ltd.
The copyright of this Manual
belongs to
Ceyear Technologies Co., Ltd.
Without authorization, any unit
or individual shall not modify or
tamper with the contents of this
Manual nor replicate or
disseminate this Manual for
profit. Ceyear Technologies Co.,
Ltd. reserves the right to
pursue legal liabilities against
infringers.
Product Warranty
The warranty period of the
product is 18 months from the
date of delivery. The instrument
manufacturer will repair or
replace the damaged parts
according to the actual
situation within the warranty
period. For this purpose, the
user shall return the product to
the manufacturer and prepay
the mailing fee. The
manufacturer will return the fee
to the user together with the
product after maintenance.
Product Quality Certification
This product is guaranteed to
meet the specifications in this
manual from the date of
shipment. The calibration and
measurement are completed
by measuring bodies with
national qualification, with
relevant data to be provided for
reference by users.
Quality/Environmental
Management
This product complies with the
quality and environmental
management systems during
R&D, manufacturing and
testing.
Ceyear Technologies Co., Ltd.
has obtained the appropriate
qualifications and passed the
certification of ISO 9001 and
14001 management system.
Safety Precautions
―Attention‖ indicates important
prompts and no danger. It
reminds the user of certain
operation process, operation
method or similar situation.
Failure to observe the rules or
operate correctly may cause
damage to the instrument or
loss of important data. Proceed
to the next step only after fully
understanding and meeting the
note conditions indicated.
―Tip‖ only indicates prompts.
It reminds the user to pay
attention to the instrument or
certain operation process,
operation method or the like.
The purpose is to guide the
instrument operator to use the
instrument correctly.
Note
Tip

Contents
Operations Manual......................................................................................................I
1. Manual Navigation .................................................................................................1
1.1. About the Manual ......................................................................................................................1
1.2 Related Documents....................................................................................................................2
2 Overview...................................................................................................................3
2.1 Product Overview .......................................................................................................................3
2.2 Safe operating manual...............................................................................................................3
2.2.1 Safety Marks..................................................................................................................................... 3
2.2.2 Operation Status and Locations........................................................................................................ 5
2.2.3 Electrical Safety................................................................................................................................ 5
2.2.4 Operation Precautions ................................................................................................................. 6
2.2.5 Maintenance.................................................................................................................................. 6
2.2.6 Batteries and Power Modules..................................................................................................... 6
2.2.7 Transportation............................................................................................................................... 7
2.2.8 Waster Disposal/Environmental Protection...................................................................................... 7
3 Quick Start................................................................................................................8
3.1 Get Prepared...............................................................................................................................8
3.1.1 Preparations before Operation.......................................................................................................... 8
3.1.2 Precautions before energization...................................................................................................... 11
3.1.3 Battery use instructions .................................................................................................................. 13
3.1.4 Startup, shutdown and screen off ................................................................................................... 14
3.1.5 Correct Use of connectors .............................................................................................................. 15
3.1.6 Routine Maintenance...................................................................................................................... 17
3.2 Description of front and rear panels and interfaces............................................................18
3.2.1 Front Panel...................................................................................................................................... 18
3.2.2 Description of side panel interfaces......................................................................................... 21
3.2.3 Description of top panel interface .................................................................................................. 22
3.3 Basic measurement methods.................................................................................................24
3.3.1 Basic operation examples............................................................................................................... 24
3.4 Data Management....................................................................................................................26
3.4.1 Reset state storage/ calling ............................................................................................................. 26
3.4.2 Data storage/ calling....................................................................................................................... 27
3.4.3 Screen shot storage......................................................................................................................... 28
4 Operation Guide....................................................................................................30

4.1 Function operation guide.........................................................................................................30
4.1.1 Fixed frequency receiving.............................................................................................................. 30
4.1.2 Panoramic scan............................................................................................................................... 34
4.1.3 Frequency scan............................................................................................................................... 36
4.1.4 List scan.......................................................................................................................................... 38
5. Menus.....................................................................................................................42
5.1 General Menu............................................................................................................................42
5.1.1 Scan menu ...................................................................................................................................... 42
5.1.2 Setting menu................................................................................................................................... 43
5.1.3 List menu........................................................................................................................................ 47
5.1.4 Record menu................................................................................................................................... 50
5.1.5 File menu........................................................................................................................................ 52
5.1.6 Self-test menu................................................................................................................................. 53
5.1.7 Frequency scale menu .................................................................................................................... 53
5.1.8 Antenna menu................................................................................................................................. 55
5.1.9 Peak menu ...................................................................................................................................... 55
5.1.10 Playback menu.............................................................................................................................. 56
5.2 Window menu............................................................................................................................59
5.2.1 Fixed frequency receiving.............................................................................................................. 59
5.2.2 Panoramic scan............................................................................................................................... 64
5.2.3 Frequency scan............................................................................................................................... 69
5.2.4 Scan the list..................................................................................................................................... 72
6 Remote control.......................................................................................................75
6.1 Remote control principals........................................................................................................75
6.1.1 Program control interface............................................................................................................... 75
6.1.2 Message.......................................................................................................................................... 76
6.1.3 SCPI commands ............................................................................................................................. 77
6.1.4 Command Sequence and Synchronization..................................................................................... 84
6.1.5 Status reporting system................................................................................................................... 84
6.1.6 Programming considerations.......................................................................................................... 87
6.2 Instrument program control port and configuration.............................................................87
6.2.1 LAN................................................................................................................................................ 87
6.3 Basic VISA interface programming method .........................................................................88
6.3.1 Installing the VISA Library............................................................................................................ 88

6.3.2 Initialize the controller ................................................................................................................... 89
6.3.3 Initialize the instrument.............................................................................................................. 89
6.3.4 Send Setting Command............................................................................................................. 89
6.3.5 Read the State of Measuring Instrument ................................................................................ 90
6.3.6 Read the frequency scale.......................................................................................................... 90
6.4 I/O library....................................................................................................................................90
6.4.1 Overview of I/O Library.............................................................................................................. 90
6.4.2 Installation and Configuration of I/O Library........................................................................... 91
7 Troubleshooting and after-sales services .........................................................93
7.1 Working principles....................................................................................................................93
7.1.1 Overall working principle and hardware function block diagram......................................... 93
7.2 Troubleshooting and debugging.............................................................................................95
7.2.1 Basic troubleshooting process.................................................................................................. 95
7.2.2 Common fault phenomena and troubleshooting methods .............................................................. 95
7.3 Error message...........................................................................................................................96
7.3.1 Error message file........................................................................................................................... 96
7.3.2 Error message description ........................................................................................................ 97
7.4 Method to obtain after-sales services....................................................................................97
7.4.1 Contact us.................................................................................................................................... 97
7.4.2 Package and mailing.................................................................................................................. 98
8 Technical indicators and testing methods.........................................................99
8.1 Statement...................................................................................................................................99
8.2 Product features........................................................................................................................99
8.3 Technical Indicators ...............................................................................................................100
8.4 Additional information.............................................................................................................103
8.5 Performance characteristics test..........................................................................................104
8.5.1 Recommended testing method............................................................................................... 104
8.5.2 Performance test log sheet ..................................................................................................... 122
8.5.3 Performance test auxiliary tables........................................................................................... 125
8.5.4 Recommended instrument for performance characteristics test....................................... 141
Appendix ..................................................................................................................142
Annex A Terminology ...................................................................................................................142
Units of measurement........................................................................................................................ 142
Measuring range................................................................................................................................. 142
Logarithmic scale display .................................................................................................................. 142

Trace..................................................................................................................................................... 142
Frequency scale.................................................................................................................................. 142
Differential frequency scale............................................................................................................... 142
Filter selectivity.................................................................................................................................... 142
LO.......................................................................................................................................................... 142
Spurious response.............................................................................................................................. 143
Dynamic range.................................................................................................................................... 143
FFT........................................................................................................................................................ 143
Resolution............................................................................................................................................ 144
Amplitude accuracy............................................................................................................................ 144
Intermodulation.................................................................................................................................... 144
Detector Mode..................................................................................................................................... 144
Drift........................................................................................................................................................ 144
Span...................................................................................................................................................... 144
Frequency range................................................................................................................................. 145
Frequency accuracy........................................................................................................................... 145
Frequency stability.............................................................................................................................. 145
Flatness................................................................................................................................................ 145
Measurement time.............................................................................................................................. 145
Measurement mode............................................................................................................................ 145
Input impedance.................................................................................................................................. 145
Explicit average noise level............................................................................................................... 145
Preselector........................................................................................................................................... 145
Sensitivity............................................................................................................................................. 145
Phase noise......................................................................................................................................... 146
Gain compression............................................................................................................................... 146
Appendix B SCPI Command Quick Reference Table.............................................................147
Annex C Zoom table of failure information................................................................................156

1. Manual Navigation
1.1. About the Manual
1
1. Manual Navigation
This chapter describes the functions, chapter composition and main contents of the User Manual of
3943B Monitoring Receiver, and the instrument-related documents for the user.
About the Manual…………………………………………………………………………………1
Related Documents………………………………………………………………………………2
1.1. About the Manual
In the manual, basic functions and operating methods of the 3943B monitoring receiver are introduced,
including instrument characteristics, basic operating methods, measurement configuration operating
manual, menus, remote control, maintenance, specifications and test methods to help you rapidly get
familiar with and understand key points of the instrument operation method and use. Please read this
manual carefully before operating the instrument so that you are familiar with it, and then operate it
properly according to the instructions.
This manual contains the following chapters:
Overview
It provides an overview of main performance features and typical application of 3943B monitoring
receiver and safety guidelines for instrument operations. The purpose is to provide the user with an initial
understanding of the main performance features of the instrument, and guide the user in the safe
operation of the instrument.
Quick Start
In this chapter, inspections before use, instrument navigation, basic measurement methods and data
management of the 3943B monitoring receiver are explained to help users get to understand the
instrument itself and measurement procedure and lay foundation for subsequent detailed introduction of
the instrument measurement operating manual. ### This section contains some contents consistent with
the relevant sections in Quick Start.
Operation Guide
It introduces in details operation methods of basic scan functions of the 3943B monitoring receiver,
including fixed frequency receiving, panoramic scan and list scan.
Menus
This chapter describes the menu structure and items according to functional categories to facilitate
query and reference.
Remote Control
This chapter outlines the remote control method of instrument, so that the user can rapidly get to know
how to remotely control the instrument. It is divided into four sections: the program control basics
describe the concepts related to program control, software configuration, program-controlled port, SCPI
commands, etc.; instrument port configuration method describes the connection and software
configuration methods of the program-controlled port of 3943B monitoring receiver; basic programming
method of VISA interface provides an example of basic programming with text illustration and example
codes, so that the user can rapidly get to know the programming method; and I/O function library
describes the basic concepts of the instrument drive.
Troubleshooting and Repair
This part includes the introduction of the working principles of the instrument, troubleshooting, error
information description and repair methods.
Technical Indicators and Testing Methods
This chapter describes the characteristics and main specifications of 3943B monitoring receiver and
recommended test instructions for users.
Appendix
This chapter provides the necessary reference information for 3943B monitoring receiver, including

1. Manual Navigation
1.2 Related Documents
2
terminology, remote control commands index, error messages index, etc.
1.2 Related Documents
The documents related to 3943B monitoring receiver include:
Quick Start
User's Manual
Program Control Manual
Quick Start
This manual introduces the instrument configuration and the basic measurement method, with the aim to
enable users to quickly understand the characteristics of the instrument, master the basic settings and
basic local and remote control operation methods. Main chapters include:
Manual Navigation
Get Prepared
Typical Applications
Get Help
User’s Manual
This manual introduces the functions and operation methods of the instrument in detail, including
configuration, measurement, program control, and maintenance, etc.. It aims to guide the user to
comprehensively understand the functional characteristics of the product and common test methods of
the instrument. Main chapters include:
Manual Navigation
Overview
Quick Start
Operation Guide
Menus
Remote Control
Troubleshooting and Repair
Technical Indicators and Testing Methods
Annexes
Program Control Manual
This manual introduces the remote programming fundamentals, SCPI fundamentals, SCPI commands,
programming examples, I/O drive function library, etc. in detail. The purpose is to guide users to quickly
and comprehensively master the program control commands and methods of the instrument. Main
chapters include:
Remote Control
Program Control Commands
Programming Examples
Error Description
Annexes

2 Overview
2.1 Product Overview
3
2 Overview
In addition to main performance features and main applications of the 3943B monitoring receiver, this
chapter also describes precautions for proper operation, electrical safety, etc. of the instrument.
Product overview………………………………………………………………………………3
Safe operating manual …………………………………………………………………………3
2.1 Product Overview
The 3943B monitoring receiver can cover a frequency range of 9kHz to 8GHz, with the maximum
analysis bandwidth of 20MHz, the overall dimensions of 182.5mm×289mm×69mm, the weight of the
complete machine of less than 3.5kg, and the 10.1-inch TFT and integrated touch screen. It possesses
many functions, such as radio signal search, interception, measurement, analysis, demodulation,
direction finding, positioning, etc. It is applicable to emission monitoring, coverage measurement, rapid
detection and positioning of illegal emission sources/ interference sources, radio support for major
activities and other fields in compliance with ITU specifications. The complete machine adopts the full
touch screen design, the software supports the multi-touch interactive mode, which completely applies
the touch operation experience of smart phones to the monitoring receiver equipment.
2.2 Safe operating manual
Please read carefully and strictly observe the following precautions!
We will spare no effort to ensure that all production processes meet the latest safety standards and
provide users with the highest safety guarantee. The design and testing of our products and the auxiliary
equipment used meet relevant safety standards, and a quality assurance system has been established
to monitor the product quality and ensure the products to always comply with such standards. In order to
keep the equipment in good condition and ensure operation safety, please observe the precautions
mentioned in this manual. If you have any questions, please feel free to consult us.
In addition, the correct use of this product is also your responsibility. Please read carefully and observe
the safety instructions before starting to use this instrument. This product is suitable for use in industrial
and laboratory environments or field measurement. Always use the product correctly according to its
restrictions to avoid personal injury or property damage. We will not take any responsibility for any
misuse or inconsistency as required, and you are liable for any risks incurred by. Therefore, please
follow the safety instructions to prevent from personal injury or property damage. Please keep
product documentation safe and delivery them to end users.
Safety signs ………………………………………………………………………………4
Operation status and location………………………………………………………………………5
Electrical safety………………………………………………………………………………5
Operation precautions…………………………………………………………………………6
Maintenance……………………………………………………………………………………6
Battery and power supply module………………………………………………………………………6
Transportation ……………………………………………………………………………………7
Waste disposal/ environment protection …………………………………………………………………7
2.2.1 Safety Marks
2.2.1.1 Product-related Marks
Safety warning signs on products are shown in Table 2.1 below:
Table 2.1 Products safety marks
Symbol
Meaning
Symbol
Meaning
Caution, reminding users of
information to be paid special
attention to.
Turn On/Off the power

2 Overview
2.2 Safe operating manual
4
It reminds users of the operation
information or instructions to be paid
attention to.
Note, handling heavy equipment.
Standby indication
Danger! Hazard of electric shock.
Direct current (DC)
Warning! Hot surface.
Alternating current (AC)
Protective conductive end
Direct/alternating current (DC/AC)
Ground
Reinforced insulation protection of
the instrument
Ground terminal
EU symbol for batteries and cells
Please refer paragraph 1 of "2.2.8
Waster Disposal/Environmental
Protection" in this section for
specific instructions.
Caution, handle classical sensitive
devices with care.
EU symbol for electronic devices
separate collected
Please refer paragraph 2 of "2.2.8
Waster Disposal/Environmental
Protection" in this section for
specific instructions.
Warning! Radiation.
For details, refer to Item 7 of "2.2.4
Operation Precautions" in this section.
2.2.1.2 Manual-related Marks
In order to remind users to operate the instrument safely and pay attention to relevant information, the
following safety warning marks are used in the product manual, which are explained as follows:
Danger mark, personal injury or equipment damage may be caused if not avoided.
Warning mark, personal injury or equipment damage may be caused if not avoided.
Caution mark, slight or medium personal injury or equipment damage may be caused if not avoided.
Danger
!
Warning
!
Caution
!

2 Overview
2.2 Safe operating manual
5
Note mark, indicating some important information which will not cause danger.
Tips on information about the instrument and its operation.
2.2.2 Operation Status and Locations
Please note before operating the instrument:
1) Unless otherwise stated, the operating environment of 3943B monitoring receiver shall meet the
following requirements: stable placement of the instrument. The instrument should be operated and
transported at places with an altitude no higher than 4,600m. The actual power supply voltage is
allowed to vary within ±10% of the specified voltage, and the power supply frequency is allowed to
vary within ±5% of the specified frequency.
2) The instrument is not allowed to be placed on a wet surface, vehicle, cabinet, table and other
objects which are not fixed and do not conform to the load conditions. Please place the instrument
securely and fix it on the surface of a solid object (e.g., an ESD workbench).
3) Do not place the instrument on the surface of a heat-dissipating object (e.g., a radiator). The
operating environment temperature shall not exceed the value specified in the description of
relevant indicators of the product. Overheating of the product will lead to electric shock, fire and
other risks.
2.2.3 Electrical Safety
Precautions for electrical safety of the instrument:
1) Before the instrument is powered on, the actual supply voltage should match the supply voltage
marked on the instrument.
2) Do not damage the power cord, otherwise electric leakage will be caused, resulting in damage to
the instrument and even injury of the operators. If an external power cord or extension socket is
used, it should be checked before use to ensure electrical safety.
3) Do not use damaged power cords. Before connecting the instrument to the power cord, check the
integrity and safety of the power cord, and properly place the power cord to avoid the impact due to
human factors, such as, too long power cord that may trip the operator.
4) Keep the socket clean and tidy, and ensure the plug and the socket in good contact and reliable
engagement.
5) Neither the socket nor the power cord can be overloaded, otherwise fire or electric shock will be
caused.
6) In order to avoid damage to the instrument during the test in a circuit with a voltage Vrms> 30 V,
appropriate protective measures shall be taken (for example: using suitable test instrument,
installing fuse, limiting current value, conducting electrical isolation and insulation, etc.).
7) Unless otherwise allowed, do not open the housing of the instrument, which may expose internal
circuits and devices of the instrument and cause unnecessary damage.
8) If the instrument needs to be fixed at the test site, a qualified electrician is required to install the
protective earth wire between the test site and the instrument first.
9) Take appropriate overload protections to prevent overload voltage (caused by lightning, for instance)
from damaging the instrument or causing personal injury.
10) Do not place any objects other than the internal objects of the instrument in the shell when the
instrument shell is opened, otherwise, it may cause short circuit, instrument damages and even
personal injuries.
Note
Tip

2 Overview
2.2 Safe operating manual
6
11) It is strictly forbidden to insert any objects into the instrument through the openings on the
instrument shell, or shield the notches or openings on the instrument, as their function is to ventilate
the instrument and prevent the instrument from overheating.
12) Unless otherwise stated, the instrument has not received any waterproof treatment, so keep the
instrument from contacting with liquid to prevent damage to the instrument or even personal injury.
13) Do not place the instrument in an environment where fog is easily formed, for example, moving the
instrument in a environment where cold and heat are in alternation, where water droplets formed on
the instrument may cause electric shock and other hazards.
2.2.4 Operation Precautions
1) Instrument operators need to have certain professional and technical knowledge, good
psychological quality, and certain emergency response capabilities.
2) Refer to the relevant requirements in ―2.2.7 Transportation‖ in this section before handling or
transporting the instrument.
3) The inevitable use of substances (e.g. nickel) in the production process of the instrument may cause
allergy to personnel. If an operator of the instrument has allergic symptoms (e.g. rash, frequent
sneezing, ophthalmia or dyspnea) during the operations, please seek medical care in time to find
out the reason and solve the symptoms.
4) Refer to relevant requirements in ―2.2.8 Waste disposal/ environmental protection‖ of this section
before removing and disposal of the instrument.
5) RF instruments will generate high electromagnetic radiation, during which period, pregnant women
and operators with cardiac pacemakers need special protection. If the radiation level is high,
corresponding measures may be taken to remove the radiation sources to prevent personal injury.
6) In case of fire, the damaged instrument will release toxic substances. Therefore, the operators
should wear appropriate protective equipment (e.g. Protective masks and exposure suits) for safety.
2.2.5 Maintenance
1) The instrument must be opened by an authorized operator who has received special technical
training. Before such operations, it is required to disconnect the power cord to prevent damage to
the instrument or even personal injury.
2) The repair, replacement and maintenance of the instrument should be performed by dedicated
electronic engineers of the manufacturer, and the parts subject to replacement and maintenance
should receive safety tests to ensure safe use of the product in the future.
2.2.6 Batteries and Power Modules
Please read the relevant information carefully before using batteries and power modules to avoid
explosion, fire or even personal injury. The precautions regarding the use of batteries are as follows.
1) Do not damage the battery.
2) Do not expose the battery and power supply module to heat sources such as open flame; store
them out of direct sunlight and keep them clean and dry; and use a clean and dry soft cotton cloth to
clean the connection ports of the battery or power supply module.
3) Do not short-circuit the battery or power supply module. Do not store multiple batteries or power
modules in a cardboard box or drawer because contact with each other or other conductors may
cause a short circuit; and do not remove the original packaging before using the batteries and power
modules.
4) The batteries and power modules shall be kept from mechanical shock.
5) If there are battery liquid leaks, keep your skin and eyes away from the leaks, and if it fails, please
flush with plenty of water and seek medical care.
6) Please use the manufacturer's standard battery and power module. Any improper replacement and
charging of alkaline batteries (e.g. lithium batteries) are likely to cause an explosion.

2 Overview
2.2 Safe operating manual
7
7) Discarded batteries and power modules shall be recycled and disposed of separately from other
wastes. Because there are toxic substances inside the batteries, they shall be reasonably discarded
or recycled according to local regulations.
2.2.7 Transportation
1) When operating the instrument on the vehicle, the driver should drive carefully to ensure
transportation safety, and the manufacturer is not responsible for any emergencies during the
transportation. Therefore, please do not use this instrument during the transportation, and
reinforcement and preventive measures should be taken to ensure the transportation safety of the
product.
2.2.8 Waster Disposal/Environmental Protection
1) Do not dispose of devices marked with batteries or accumulators together with unclassified waste;
Instead, such devices should be collected separately and disposed of in a suitable collection
location or through the customer service center of the manufacturer.
2) Do not dispose of waste electronic devices together with unclassified waste; Instead, such devices
should be collected separately. The manufacturer has the right and responsibility to help end users
dispose of waste products. If necessary, please contact the customer service center of the
manufacturer for corresponding disposal so as not to damage the environment.
3) During mechanical or thermal processing of the product or its internal components, toxic substances
(dust of heavy metals, such as lead, beryllium, and nickel, etc.) may be released. Therefore,
specially trained technicians with relevant experience are required to disassemble the product to
avoid personal injury.
4) During the reprocessing, please refer to the safety operation rules recommended by the
manufacturer to dispose of toxic substances or fuel released from the product with specific methods
to avoid causing personal injury.

3 Quick Start
3.1 Get Prepared
8
3 Quick Start
This chapter introduces the operation precautions, description of front and rear panels and interfaces,
basic measurement methods, data file management, etc. of the 3943B monitoring receiver. It is aimed to
enable the user initially understand the instrument itself and the measurement process. This section
contains some contents consistent with the relevant sections in Quick Start.
Preparation before operation………………………………………………………………………………8
Description of front and rear panels and interfaces………………………………………………18
Basic measurement methods…………………………………………………………………………24
Data management………………………………………………………………………………26
3.1 Get Prepared
Preparation before operation……………………………………………………………………………8
Precautions before power on………………………………………………………………………11
Battery use instructions…………………………………………………………………………13
Startup, shutdown and screen off………………………………………………………………………14
Proper use of connector………………………………………………………………………15
Routine maintenance…………………………………………………………………………17
3.1.1 Preparations before Operation
This chapter introduces the precautions for initial setting and operation of the 3943B monitoring receiver.
Prevent personal injuries and instrument damages.
To avoid electric shock, fire and personal injury:
Do not open the cabinet arbitrarily;
Do not try to disassemble or refit any part of the instrument not mentioned in the manual. Otherwise,
such consequences as reduced electromagnetic shielding property and internal component
damage can occur, affecting product reliability. If the product is under warranty, we will no longer
provide free maintenance.
Carefully read the related content in "2.2 Safe use guide" of this manual, and the following operating
safety precautions, and also pay attention to the specific operating environment requirements
involved in the technical indicators.
Electrostatic protection
Take electrostatic protection measures at workplaces to avoid any damage caused by the instrument.
Note
Warning
!

3 Quick Start
3.1 Get Prepared
9
Please note following condition when operating the instrument:
Improper operating or measuring position can damage the instrument or the one connected to it. Please
note following conditions when the instrument is electrified:
Keep the instrument dry.
Reasonably arrange the instrument.
The ambient temperature should meet the requirements in the technical indicators.
The input signal power of the port is within the specified range.
The signal input interface should be properly connected to avoid overload.
Influence of electromagnetic interference (EMI)
Since EMI can affect the measurement result, pay attention to the following:
Select proper shield cables. For example, to use the double-shielded RF/network connection cable;
Always open and close the cable connection port which is not used temporarily.
Please refer to the electromagnetic compatibility (EMC) level marking in the technical indicators.
1) Unpacking inspection
Step 1 Check whether the outer packing box and shockproof package are damaged. In case of any
damage, keep the outer package for future use. Inspect continuously according to the following steps.
Step 2 Unpack the box and check whether the host and accompanying articles are damaged.
Step 3 Carefully check the above articles according to Table 3.1.
Step 4 In case of any outer package damage, or damage or problem to the instrument or articles
provided in the package, never power the instrument on or start it up! Please contact our company's
service consultation center through the service consultation hotline in the manual, and we will provide
the repair or replacement service quickly according to the situation.
Table 3.1 List ofAccompanyingArticles of 3943B
Name
Quantity
Function
Main unit
3943B
1
—
Standard configuration
Power Adapter
1
—
3-core power cord
1
—
Built-in rechargeable lithium-ion
battery
1
—
User's Manual
1
—
Program Control Manual
1
—
Packing list
1
—
Options
Tip
Note

3 Quick Start
3.1 Get Prepared
10
Depend on users‘ options
—
—
2) Operating environment requirements
The 3943B monitoring receiver should be operated at places conforming to the requirements in Table
3.2:
Table 3.2 Operating Environment Requirements of 3943B
Temperature
0°C -50°C
Humidity
When the temperature is lower than 10℃, the humidity is not controlled
When the temperature is 10℃～30℃, the relative humidity is (5~95)%
When the temperature is 30℃～40℃, the relative humidity is (5~75)%
When the temperature is above 40℃, the relative humidity is (5~45)%
Elevation
0 -4,600 m
The above environmental requirements are only applicable to the operating environment factors of the
instrument, and are not with the scope of technical indicators.
3) Instrument operation mode
The 3943B monitoring receiver is designed for both indoor fixed operation and outdoor hand-held
operation. In any case, the instrument can be set to the best condition, and the display is in the best
observation angle.
When used as a desktop instrument, the 3943B monitoring receiver can be placed on a desktop or a
fixed bracket to obtain the best observation angle.
Fig. 3.1 3943B on Fixed Support
In case of the hand-held operation, it is recommended to use the accompanying hand strap for operation
in front of chest, so as to obtain the optimal operation and viewing angle.
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Fig. 3.2 Hand Strap of 3943B
4) Electrostatic protection
Static electricity is extremely destructive to electronic components and equipment. Usually we take two
anti-static measures: conductive table mat and wrist strap; Conductive floor mat and ankle strap. Using
the above two anti-static measurements at the same time can provide good antistatic protection. If using
one of them, only the former can provide antistatic protection. In order to ensure the user safety, the
ground isolation resistance of anti-static components must be 1MΩ at least.
Correctly take the following antistatic measures to techniques to reduce electrostatic damages:
Ensure that all instruments are properly grounded to prevent generation of static electricity.
Before connecting the coaxial cable to the instrument, the inner and outer conductors of the cable
shall be respectively in contact with the ground for a short time.
Operators must wear anti-static wrist straps or take other antistatic measures before touching the
joints, core or conducting any assembly.
Voltage range
The above anti-static measures shall not be adopted in situations where the voltage exceeds 500V.
3.1.2 Precautions before energization
Pay attention to the following when turning on the power of the instrument:
1) Power supply requirements
The 3943B monitoring receiver has two power supply modes, namely, battery or power adapter.
The 3943B monitoring receiver can be powered in two ways:
a) Power adapter
When using the AC power supply, the accompanying AC-DC adapter must be adopted. The adapter
input is 220V/50Hz AC. In order to prevent mutual interference of power supplies of various devices,
especially the receiver hardware damage caused by spike pulse interference of high-power equipment, it
is recommended to use the 220VAC stabilized power supply to power on the receiver.
Table 3.3 lists the requirements for external power supply during the normal operation of adapter
Table 3.3 Requirements of Operating Power Supply Parameters ofAdapter of 3943B
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b) built-in battery
The rechargeable lithium batteries are used as the built-in battery pack. Table 3.4 lists the main
performance indexes of the built-in battery pack:
Table 3.4 Performance Indexes of Batteries of 3943B
The rechargeable battery cannot be exposed to fire or high temperature environment, and must be kept
away from children. If the battery is improperly placed, it may cause an explosion. The rechargeable
battery can be reused and placed in a suitable container to avoid short circuit of the battery.
If the instrument is not used for a long time, please take out the battery and place it in a cool, dry and
well-ventilated area. The battery stored for more than half a year should be additionally charged.
2) Confirm and connect the power cord
The 3943B monitoring receiver adopts three-core power line interface and conforms to national safety
standards. Before the monitoring receiver is energized, you must confirm that the protective earth wire in
the power line of the monitoring receiver is reliably grounded. Floating grounding or poor grounding
may cause damage to the instrument and even injury to the operator. Using a power cord without
protective grounding is strictly prohibited. When the instrument is connected to a suitable power outlet,
the power cord connects the housing of the instrument to the ground.
When connecting the instrument to the power supply:
Step 1. Confirm that the working power cord is not damaged;
Step 2. Use the power line to connect the power supply plug of the instrument rear panel to a
well-grounded three-core power socket.
Grounding
Poor or wrong grounding may cause damage of the instrument or personal injury. Before the monitoring
receiver is energized, make sure that the earth wire is in good contact with the earth wire of the power
supply.
Please use a power outlet with grounding protection. Do not use any external cable, power line or
autotransformer without any protective grounding as the protective grounding line. If an autotransformer
is necessary, you need to connect the common terminal to the protective earth wire of the power
connector.
Power supply parameter
Applications
Input voltage
100~240VAC
Operating frequency
50-60Hz
Input current
≥1.7A
Power supply parameter
Performance index
Nominal voltage
14.8V
Nominal capacity
6200mAh
Operating time
≥3h
Warning
!
Warning
!