Ceyear 4992A User manual

I
4992A Radio Test Set
User Manual
China Electronics Technology Instruments Co., Ltd

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. If you have any questions,
please don't hesitate to contact us:
Tel
[phone]
Website
www.ceyear.com
E-mail
[e-mail]
Address
NO. 98 Xiang Jiang Rd., Qingdao City, China
Zip code
266555
This manual describes the purpose, operation method, precautions, performance
characteristics, basic working principle, fault query, etc. of 4992A Radio Test Set developed and
produced by China Electronics Technology Instruments Co., Ltd, so as to help you rapidly
understand the methods and key points of operation of this instrument. For proper use, please read
this manual carefully and properly observe the guidance.
This user manual includes eight chapters in total.
Chapter I provide and overview of 4992A Radio Test Set, including main technical
characteristics, existing or available functions and technical indicators.
Chapter II to V mainly describe the operation. Chapter II describes how to handle a new
Radio Test Set as well as the precautions during operation. Chapter III mainly introduces the front
panel, external interfaces, etc. Chapter IV introduces the basic operations of 4992A. Chapter V
introduces the menus of 4992A, which are arranged according to the function categories to
facilitate access.
Chapter VI and VII introduce technical requirements, including a brief description of the
working principle of 4992A and an introduction to the performance test methods of main technical
indicators.
Chapter VIII introduces maintenance requirements, including fault query steps, error
information and repair methods.
Statem
ent:
This manual is the first version (No. AV2.766.1002SS/A.2) of User Manual
of 4992A Radio Test Set.
The information contained in this User Manual is subject to change
without notice.
The power to interpret the contents of and terms used in this Manual rests
with China Electronics Technology Instruments Co., Ltd.
China Electronics Technology Instruments Co., Ltd owns the copyright of
this User Manual which should not be modified or tampered by any
organization or individual, or reproduced or transmitted for the purpose of
making profit without its prior permission, otherwise China Electronics
Technology Instruments Co., Ltd will reserve the right to investigate and affix
legal liability of infringement.

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

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.
3) Ensure the good grounding of power supply as poor or wrong grounding may cause
damage to the instrument;
4) Take anti-electrostatic measures in operation, such as anti-electrostatic straps, to prevent
electrostatic damage to this instrument.
5) This instrument can be powered by the internal battery. If required, use the battery of
the same or recommended type for replacement; otherwise, explosion may occur.
6) The internal temperature is high during operation. In the design, heat is dissipated by the
casing. Keep at least 5cm of effective heat dissipation space for the instrument during
operation, especially in a cabinet. Ensure sufficient ventilation or use an effective thermal
conductor to transmit heat from the casing.
2. Safety precautions for other instrument & equipment
1) Check the working condition and turn off RF output before connecting the instrument,
otherwise it may output high power signal to damage the equipment to be tested;
2) The output power may be high in the self-test of this instrument. Please disconnect all
external devices.
3) If a fault alarm prompts during operation, indicating that the Radio Test Set is abnormal,
please turn off the RF switch or the power supply switch and disconnect all external
devices to avoid impacts on the device under test.
3. Personal safety precautions
1) Use appropriate handling tools and place this instrument with care to avoid personal
injuries caused by falling of this instrument.
2) Ensure that the power supply is well grounded, as poor or wrong grounding may result
in personal injuries.
3) Get the instrument cut off before wiping to prevent electric shock; only wipe the outside
of the instrument with dry or slightly wet soft cloth other than the inside.
4) This instrument has potential risks of microwave radiation in the high-power status.
Please take corresponding anti-radiation measures.
II. Environmental Protection
1. Disposal of packing container

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. The scraped instrument must not be
discarded or disposed without permission. Please inform t China Electronics Technology
Instruments Co., Ltd or a qualified professional recycling organization for recycling.
2) If required, the internal battery may not be discarded without permission after
replacement. It should be separately recycled as chemical waste.
Unless otherwise specified, the above-mentioned operations should abide by Regulations
on Recovery Processing of Waste Electrical and Electronic Products and local
environmental laws and regulations.

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
1. RF source......................................................................................................................................4
2. Audio source (Audio 1and Audio 2) ......................................................................................................5
3. RF meter ...............................................................................................................................................5
4. Demodulation meter.............................................................................................................................6
5. Spectrum analyzer (optional) ...............................................................................................................7
6. Audio meter ..........................................................................................................................................7
7. Digital Voltmeter ..................................................................................................................................8
8. Oscilloscope (optional)..........................................................................................................................8
9. Cable test ..............................................................................................................................................9
10. Internal time base...............................................................................................................................9
11. Input/Output port .............................................................................................................................10
ARTICLE I HANDLING INSTRUCTIONS ............................................................................................... 11
CHAPTER II OPERATION GUIDE ........................................................................................................ 12
Section 1 Unpacking Inspection ...........................................................................................................12
1 Model confirmation .............................................................................................................................12
2 Appearance inspection ........................................................................................................................12
Section 2 Safety Instructions.................................................................................................................12
1 Environmental requirements ...............................................................................................................12
2 Selection of power line.........................................................................................................................13
3. Power supply requirements ................................................................................................................13
4. Electrostatic protection (ESD) .............................................................................................................14
5. Input/output port protection..............................................................................................................15
6. Cleaning of display of front panel.......................................................................................................15
Section 3 Battery Installation and Replacement...................................................................................15
1. Battery description .............................................................................................................................15
2. Battery installation and replacement .................................................................................................16
3. Battery status check ...........................................................................................................................16
4. Battery charging .................................................................................................................................16
5. Battery life ..........................................................................................................................................17
Section 4 User Inspection......................................................................................................................18
1 Preliminary check.................................................................................................................................18
2 Detailed check .....................................................................................................................................18
CHAPTER III PANEL DESCRIPTION ..................................................................................................... 20
Section 1 Description of front panel .....................................................................................................20

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. SWR interface .....................................................................................................................................24
4. Audio box interface.............................................................................................................................24
5. GPS interface ......................................................................................................................................24
6. AUDIO OUT interface..........................................................................................................................24
7. AUDIO IN/DVM interface....................................................................................................................24
8. Power input ........................................................................................................................................25
9. SD card slot .........................................................................................................................................25
10. LANinterface .....................................................................................................................................25
11. Mini USB interface ............................................................................................................................25
12. USB A interface .................................................................................................................................25
CHAPTER IV OPERATION GUIDANCE ................................................................................................ 26
Section 1Operation Guidance for RF Transmitter Function...............................................................27
Section 2 Operation Guidance for RF Receiver Function...................................................................31
Section 3 Operation Guidance for Cable Test Function......................................................................39
Section 4 Operation Guidance for Call Function ................................................................................46
Section 5 Operation Guidance for Audio Function .............................................................................47
CHAPTER V MENU DESCRIPTION ...................................................................................................... 56
1 Measurement .......................................................................................................................................56
2. Transmitter.........................................................................................................................................77
3 Receipt.................................................................................................................................................77
4 Audio ...................................................................................................................................................77
5 Cable ...................................................................................................................................................77
6 Call......................................................................................................................................................78
7 Memory/call.........................................................................................................................................78
8. System.................................................................................................................................................78
ARTICLE II TECHNICAL SPECIFICATIONS ............................................................................................ 81
CHAPTER VI OPERATING PRINCIPLE ................................................................................................. 82
CHAPTER VII PERFORMANCE FEATURE TEST .................................................................................... 84
ARTICLE III MAINTENANCE INSTRUCTIONS..................................................................................... 120
CHAPTER VIII FAILURE INFORMATION DESCRIPTION AND REPAIR METHOD .................................. 121
Section 1 Fault Information Description............................................................................................121
Section 2 Rework Method....................................................................................................................122

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:
WARNING denotes a hazard. It calls attention to a procedure
which, if not correctly performed or not adhered to, could result
in injury or loss of life.
CAUTION:
CAUTION calls out user’s special attention. It provides
operational information or additional instructions of which the
user should be aware.

STATEMENT:
“STATEMENT” gives instructions or prompts.
！


Chapter I Overview
1
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. It can be applied to test the overall performance of
2MHz-1000MHz radio transmitters and receivers. With the built-in standing wave ratio test
module, a fault of antenna and feeder connection can be rapidly located. The Radio Test Set also
has the smallest size and most complete functions in the industry.
This instrument has the high adaptability to the environment and supports the battery use as
the power supply. It is not only suitable for production and commissioning of simple laboratory
application and communication device, but also applicable to field on-site installation,
maintenance support service, etc. It has broad application space in the civilian communication,
public security, army informatization, etc.
Fig. 1-1 4992ARadio Test Set
2 Product Features
4992A Radio Test Set is designed with high integration, modularization and standardization
to offer excellent performance. Main characteristics are as follows.
Small size, light weight, built-in battery and suitability for field operations.
High environmental adaptability and dust/sand protection capabilities, thus facilitating
tests in various environments.
Complete testing capabilities and excellent comprehensive test effects.
Flexible one-key integration/menu customization function to facilitate tests.
Built-in diagnosis module, thus making test effects more intuitive and clearer.
Color touch screen operation interface and effective backlight sensing function.

Chapter I Overview
2
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;
RF signal excitation and modulation signal simulation function;
Two-way audio signal generation and audio signal frequency, level, distortion and
SINAD analysis function;
RF high-power measurement and signal strength indication function;
RF frequency error measurement function;
RF frequency modulation deviation and amplitude modulation depth testing function;
RF spectrum analysis function;
Audio oscilloscope measurement function;
VSWR testing and cable return loss, cable loss and DTF function;
Radio dialogue testing function.
The digital test software can be upgraded later.

Chapter I Overview
3
4 Typical application
■Field installation, commissioning and maintenance of radio device
4992A Radio Test Set is highly integrated with various test instruments. On the premise that
various functions are realized, the maximum size is 295mm (width)×195mm (height)×70mm
(depth), and the weight is less than 2.5kg. This instrument is equipped with the high-capacity
rechargeable battery, which can work in a long time after charging. Therefore, this instrument is
suitable for field installation, testing and maintenance of radio transmitters/receivers. As the
multimeter in the RF measurement field, this instrument will become an essential tool for radio
engineers.
■ Performance test of batch production of radios and intercoms
With the popularization of radio communication, military and civilian radios and
communication tools will be applied widely. Their development/batch production require various
test devices, such as the signal generator, spectrum analyzer, power meter, frequency meter,
oscilloscope, audio meter, etc. A complete set of radio/intercom generally includes the transmitter
and receiver. 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. The test process will be simplified, the costs
will be reduced, and the work efficiency will be improved. This instrument is equipped with the
built-in diagnosis module. The acceptable range can be set for specific test objects. Finally, test
data will be outputted in different colors according to the built-in limits, to remind the user of
current test results. This function has strong advantages in large-scale production, conventional
performance maintenance, etc.
■Antenna/feeder performance maintenance
From the perspective of conventional radio repair, data show that many faults are actually
caused by feeder cables and antenna rather than the radio itself. The high return loss arising from
cables, connectors or antennas can be expressed as the large VSWR value. Therefore, the test of
the standing wave ratio of the feeder cable and antenna is necessary, as the fault can be isolated on
the feeder, connector or antenna. With the built-in standing wave ratio test module, 4992A Radio
Test Set can be applied to test the standing wave performance of cable ports. Moreover, the fault
point can be positioned in the test according to the actual transmission rate of the tested cable. In
this case, the return of radios for repair is not required, thus reducing the downtime of the radio
system and improving the maintenance efficiency.

Chapter I Overview
4
Section 2 Main Technical Indicators
1. 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)
2MHz-400MHz (Source 2, ANT port output)
Frequency resolution: 1Hz
Amplitude characteristics
Output power range:
1 GHz option: -5dBm to -65dBm (SWR, Source 1)
-5dBm to -100dBm (ANT, Source 1)
-50dBm to -125dBm (T/R, Source 1)
0dBm to -100dBm (ANT, Source 2)
2.7 GHz option: 5dBm～-65dBm（SWR，Source 1，2MHz～2.2GHz）
-10dBm～-65dBm（SWR，Source 1，2.2GHz～2.7GHz）
-5dBm～-100dBm（ANT，Source 1，2MHz～1.8GHz）
-15dBm～-100dBm（ANT，Source 1，1.8GHz～2.7GHz）
-50dBm～-120dBm（T/R，Source 1, 2MHz～2.2GHz）
-55dBm～-125dBm（T/R，Source 1，2.2GHz～2.7GHz）
-5dBm～-100dBm（ANT，Source 2）
Power resolution: 0.1dB
Power accuracy: 2dB (ANT and T/R port: ≥-100dBm; SWR port: ≥-55dBm)
Spectrum purity
SSB phase noise: ≤-95dBc/Hz@20kHz (1 GHz option default)
SSB phase noise: ≤-80dBc/Hz@20kHz (2.7 GHz option)
Parasitic harmonics: ≤-30dBc
Parasitic non-harmonics: ≤-35dBc (frequency deviation: more than 20kHz) (1 GHz
option)
≤-30dBc (frequency deviation: more than 20kHz) (2.7 GHz
option, 2MHz~2GHz)
≤-20dBc (frequency deviation: more than 20kHz) (2.7 GHz
option, 2GHz~2.7GHz)
Internal AM characteristics(Audio 1 and Audio 2)
Modulation frequency: 30Hz-5kHz (acceptable setting: 20Hz-20kHz)
Amplitude range: 0-100%
Modulation accuracy:(5% modulation depth+2%) (150Hz-5kHz modulation rate,
10%-90% modulation depth)
Total harmonic distortion: 2% (20%-80% modulation, 1kHz modulation rate,
300Hz~3kHz BP filter)

Chapter I Overview
5
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. 100kHz
Resolution: 0.01Hz
Accuracy: 5% (100kHz frequency deviation, 150Hz-5kHz modulation rate)
Total harmonic distortion: 3% (1kHz modulation rate, frequency deviation of more than
2kHz, 300Hz-3kHz BP filter)
External FM characteristics
Microphone input:
Level range: 20 mVrms-350mVrms
Frequency range: 300Hz~3kHz
Frequency deviation range: max. 80kHz
Slope: positive frequency deviation corresponding to positive voltage
Audioinput:
Load: 150Ω, 600Ω, 1kΩ, High Z
Input level: 0.05Vp to 3Vp
Frequency range: 300Hz～5kHz
Tuning sensitivity:1kHz/35mVrms
Slope: positive frequency deviation corresponding to positive voltage
2. Audio source (Audio 1and Audio 2)
Frequency range: 20Hz~20kHz
Frequency resolution: 0.1Hz
Frequency accuracy: 2Hz (standard)
Output level: 20mVrms to 1.57Vrms
Output level resolution: 0.01Vrms
Output level accuracy: (5%+5mV)
Output impedance: about 5.62Ω
Output current: <15mA
Harmonic distortion: <3% (1kHz, 1Vrms)
Output: single-tone, dual-tone, noise, single-tone + noise
3. RF meter
RF input port: ANT port and T/R port
Frequency range: 2MHz~1000MHz (1 GHz option default)
2MHz～2700MHz (2.7 GHz option)
RF power (T/Rport broadband input)
Measurement range: 10-43dBm (0.01W-20W)
Optional external20dBattenuator (50W, 150W and 200W)
Maximum input level: 20W/43dBm at +25℃for 10min, or until the overheating alarm
is sent.
The ON and OFF state of the tested signal can be switched.
Resolution: 0.01W/0.1dBm

Chapter I Overview
6
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
ApplicableRF level range:
T/R port: -50dBm to +43dBm
ANT port (Receiver reference level>-70dBm): -90dBm ~ -10dBm(2MHz~1GHz)
ANT port (Receiver reference level>-70dBm): -80dBm ~ -10dBm(1GHz~2.7GHz)
ANT port (Receiver reference level ≤-70dBm): -110dBm ~
-10dBm(2MHz~1GHz)
ANT port(Receiver reference level≤-70dBm): -100dBm~-10dBm(1GHz~2.7GHz)
Resolution: 0.01dBm
Accuracy: ±3dB
4. Demodulation meter
RF input port: ANT port and T/R port
Frequency range: 2MHz~1000MHz(1 GHz option default)
2MHz～2700MHz (2.7 GHz option)
AM/FM demodulation configuration
ApplicableRF level range:
T/R port: -20dBm to +43dBm (FM)
-20dBm to +37dBm (AM)
ANT port: -80dBm to -10dBm
IF bandwidth:
5kHz, 6.25kHz, 8.33kHz, 10kHz, 12.5kHz, 25kHz, 30kHz, 100kHz, 300kHz and
600kHz
Audio filter bandwidth:
0.3-20kBP, 0.3-5kBP, 0.3-3kBP, 0.3kHP, 15kLP, 5kLP, 3kLP and 0.3kLP
Audio output level sensitivity:
FM: (3Vrms/kHz Dev)/IF BW (kHz)±15%
AM: 7mVrms/% AM±15%
AM modulation depth
Range: 5% to 100%
Resolution: 1%
Accuracy: ±5%, 1kHz modulation rate, 30%-90% modulation, 3kHz LPF
FM frequency deviation
Range: 500Hz to 100kHz
Resolution: 1Hz

Chapter I Overview
7
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)
10kHz ~ 2698MHz (2.7 GHz option)
Reference level range: -80dBm to +50dBm
Vertical ruler: 2, 5, 10, 15 and 20dB/interval
Resolution bandwidth: 10Hz to 30kHz (Step 1, 3 and 10)
In-band frequency deviation range: 0 to ±2.5MHz (frequency: ≥10MHz)
0 to ±500kHz (frequency: <10MHz)
In-band power display range: -137dBm to +43dBm
Amplitude accuracy:
±3dB (T/R input: >-50dBm; ANT input: >-110dBm)
Average noise level display:
1 GHz option:
-110dBm (bandwidth: 10kHz; reference level of receiver: >-70dBm)
-130dBm (bandwidth: 10kHz; reference level of receiver: ≤-70dBm)
2.7 GHz option:
-110dBm (bandwidth: 10kHz; reference level of receiver: >-70dBm) (2MHz~2GHz)
-130dBm (bandwidth: 10kHz; reference level of receiver: ≤-70dBm) (2MHz~2GHz)
-100dBm (bandwidth: 10kHz; reference level of receiver: >-70dBm) (2GHz~2.7GHz)
-120dBm (bandwidth: 10kHz; reference level of receiver: ≤70dBm) (2GHz~2.7GHz)
Residual response:
≤-70dBm (reference level of receiver: >-70dBm) (2MHz~1GHz)
≤-60dBm (reference level of receiver: >-70dBm) (1GHz~2.7GHz)
≤-80dBm (reference level of receiver: ≤-70dBm) (2MHz~1GHz)
≤-70dBm (reference level of receiver: ≤-70dBm) (1GHz~2.7GHz)
6. Audio meter
Input interface: audio input
Frequency range: 20Hz～20kHz
Level range: divided into the following two ranges within 20mVp to 30Vp:
0.01V to 3V (1)
1V to 30V (÷10)
Impedance matching: 150Ω, 600Ω, 1kΩ and high impedance (60kΩ)
Audio frequency
Resolution: 0.1Hz
Precision: ±1Hz
Audio voltage
Display unit: V, mV, dBuV, dBm and W
Display resolution: 1, 0.1, 0.01 and 0.001

Chapter I Overview
8
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. Digital Voltmeter
Input interface: DVM input
Frequency range: DC-20MHz
Level range: divided into the following two ranges within 100mVp to 60Vp:
0.1V to 3V (1)
2V to 60V (÷20)
Impedance matching: 1MΩ
Measurement mode: AC and DC
Display of measurement result: effective value, position peak value and average value.
Display unit: V and mV
Display resolution: 1, 0.1, 0.01 and 0.001
Accuracy: ±10% (1-gear)
8. Oscilloscope (optional)
Audioinput:
Frequency range: 20Hz～20kHz
Level range: divided into the following two ranges within 20mVp to 30Vp:
0.01V to 3V (1)
1V to 30V (÷10)
Impedance matching: 150Ω, 600Ω, 1kΩ and high impedance (60kΩ)
DVM input:
Frequency range: DC-20MHz
Level range: divided into the following two ranges within 100mVp to 60Vp:
0.1V to 3V (1)
2V to 60V (÷20)
Impedance matching: 1MΩ
Demodulation signal: the internal demodulation signal can be measured when the receiver is
opened.
Scanning line: 1
Cursor: 2
Trigger:
Mode: auto, standard and single
Pulse edge: rising edge and falling edge
Trigger level setting: