AV4992A Handheld Wireless Comprehensive Tester

Product Overview:

AV4992A Handheld Wireless Comprehensive TesterIntegrating various instruments such as RF transmission and reception analysis, audio source and audio analyzer, it can measure the performance of radio stations, walkie talkies, and audio equipment within the range of 2MHz to 1GHz, as well as test communication cables and antennas. It is a compact and fully functional wireless comprehensive testing instrument.

This product has the advantages of strong environmental adaptability and battery power supply. It is suitable for simple laboratory applications, production and debugging of communication equipment, and can also be conveniently used for various occasions such as field installation, maintenance and support services. It can be widely used in civil communication, public safety, information construction and other fields.

Instrument characteristics

Adopting a handheld design, it has a small size, light weight, and is easy to carry
Strong environmental adaptability, two power supply modes, outdoor testing, anytime, anywhere
● Dual RF source design, excellent spectrum purity, providing a complete integrated solution for radio/intercom testing
● Universal high-performance spectrum analyzer module design, making signal search and analysis more convenient
USB and LAN interfaces provide flexible remote control
Provide bilingual menus in both Chinese and English, with a user-friendly interface and simple operation.

Main Features

● Small size, light weight, built-in battery, on-site operation, easy to complete

　　AV4992A Handheld Wireless Comprehensive TesterUsing lightweight plastic shell material, it has a small volume and light weight, making it the most compact wireless multimeter in the industry under the same performance conditions. Built in high-capacity rechargeable battery pack, easy to replace. The ultra large capacity battery and multifunctional work backpack bring you the performance of desktop computers and the convenience of handheld devices, making it very suitable for on-site use.

● *'s environmental adaptability and dust and sand prevention capabilities make testing in various environments effortless

AV4992A adopts a good low-power and heat dissipation design, meeting the GJB3947A Level 3 equipment standard, and has undergone tactical expansion in many aspects. It can adapt to external environments ranging from -10 ℃ to+55 ℃. No matter in extreme cold or heat, the instrument can still maintain high-performance testing status. In terms of instrument appearance, sensitive parts such as joints are well protected by shell caps, and can be used at any time even in desert areas.

Color touch screen operation interface with backlight sensing function

AV4992A adopts a 7-inch color touch screen design, which meets current testing requirements and popular trends. On the display interface, multiple instruments can be displayed simultaneously in the same window, with scrolling operation. The instrument window can be zoomed in and out freely according to needs; In terms of parameter input, simply touch the parameter to update the settings, making the operation more convenient; Built in backlight sensing design, which can automatically adjust display brightness according to the strength of ambient light, greatly improving operational comfort.

● Complete testing functions and excellent comprehensive testing results

AV4992A has up to 17 types of instruments, including RF source, audio source, RF power meter, received signal strength meter, RF frequency error meter, spectrum analyzer, AM/FM modulation meter, audio frequency meter, audio voltmeter, distortion meter, signal-to-noise ratio meter, DVM meter, oscilloscope, voltage standing wave ratio measurement, cable return loss, insertion loss, and fault point distance positioning. It can meet almost all the testing needs of general wireless transmission and reception equipment measurement and will become a reliable assistant for wireless engineers.

● Flexible one click integration/menu customization operation function, making your testing more convenient

AV4992A has a powerful one click testing integration function, which is designed for a variety of user testing needs and can be freely configured by users. This eliminates the need for multiple tedious setup processes in many relatively fixed testing stages or environments, allowing users to easily enjoy intuitive testing results.

Built in diagnostic "doctor", testing results are more intuitive and clear

AV4992A can set corresponding test result qualification ranges for multiple test items according to the application scenario. Once the alert testing function is enabled, green will be displayed within the qualified range, and an orange alarm will be displayed beyond the qualified range, providing a clearer and more intuitive prompt to the user of the current test results.

● Chinese and English operation interface, providing online testing assistance and fault analysis

AV4992A has a default Chinese operating interface, which can also be set to English as needed for your convenience. Multiple shortcut keys lead directly to the instrument selection interface, making operation simple, easy to learn, and equipped with rich online help and fault information query functions. No advanced testing technology background or special training is required, and you can easily master them.

Rich interfaces for easy control

In addition to RF and audio signal testing interfaces, there is also an SD card slot where Micro SD cards can be used to expand the instrument's memory or copy internal data and files; There are LAN (Local Area Network) interface, Mini USB interface, USB A-type interface, which can realize program control and data transmission of the whole machine, as well as connect USB peripherals such as USB storage devices, USB mice, USB keyboards, etc

Main functions

High quality RF source performance provides excellent solutions for testing multiple performance indicators of devices such as radios/intercoms.

Integrating dual RF signal sources provides convenient integrated testing capabilities for evaluating indicators such as intermodulation, blocking, and out of band suppression.

AV4992A has two RF signal sources, namely 2MHz~1GHz and 2MHz~400MHz, with controllable output power. It can be output separately or in combination with dual sources. For situations that require dual source testing, you can greatly reduce the complexity and cost of testing equipment, and simplify the testing setup process.

Excellent spectral purity can provide high-quality signal excitation for testing related equipment.

The phase noise of the output signal of AV4992A RF source is comparable to that of a desktop signal source, and can reach -105dBc/Hz at a frequency offset of 20kHz.

Internally configured with standard modulation source, capable of FM/AM modulation function.

The AV4992A RF source can input modulation signals from the outside or provide modulation sources internally, with amplitude and frequency modulation functions required for analog communication. In order to simulate actual signals more realistically and detect equipment performance, internal modulation signals can also be overlaid with a certain amount of noise output.

Powerful RF signal analysis function and real-time spectrum monitoring provide multi-directional assessment capability for transmitter signals.

The AV4992A RF source can be used to evaluate the transmission performance of equipment, including monitoring and assessment of transmission frequency error, RF power, received signal strength, and spectral characteristics.

Accurate audio analysis with accompanying audio oscilloscope function, facilitating comprehensive performance analysis of low-frequency signals.

AV4992A has comprehensive audio analysis capabilities and can analyze signals within the range of 20Hz-20kHz in terms of frequency, voltage, signal-to-noise ratio, THD, THD+N, and other indicators. It has comprehensive testing and high accuracy, making it a reliable audio analyzer. Equipped with a DVM meter, it can also measure signals containing DC components and provide audio oscilloscope options for users to visually observe and analyze various measured signals.

● Cable testing.

AV4992A has a feeder line testing function. By measuring the standing wave ratio of the SWR port, it can test the voltage standing wave ratio, insertion loss, return loss and other performance of the cable. It can also locate the fault point distance of the cable. This will further implement fault isolation during radio maintenance and reduce system downtime caused by radio maintenance.

Main applications

● Radio equipment field debugging, installation, and maintenance

The highly integrated design of the testing instrument has been achieved. With multiple instrument functions, the largest external dimensions are only 295mm (width) × 195mm (height) × 70mm (depth), weighing less than 2.6kg. The whole machine is also embedded with a large capacity rechargeable battery, which can work for a long time on a single charge. Therefore, it is very suitable for the installation, testing, and maintenance of wireless transmission/reception equipment in the field. As a multimeter in the field of RF measurement, this instrument will become the * tool for wireless engineers.

● Batch production performance testing of radio/walkie talkies

With the increasing popularity of wireless communication, the application of various radio stations and communication tools is becoming more and more widespread. Their development/mass production cannot be separated from various testing equipment, such as signal generators, spectrometers, power meters, frequency meters, oscilloscopes, audio meters... A complete radio/walkie talkie usually includes a transmitter and a receiver. To complete all their performance indicators testing, it is undoubtedly necessary to frequently switch between multiple instruments and equipment, which not only consumes manpower and material resources, but also consumes a lot of time. A handheld radio comprehensive tester integrates the above instruments and can conduct full performance testing of various vehicle/commercial radio stations, wireless walkie talkies and other equipment, undoubtedly simplifying the testing process, reducing costs, and promoting work efficiency improvement. This instrument has a built-in diagnostic "doctor" function that can set corresponding qualified ranges for specific test objects. During the final test, the test data can be output in different colors according to the built-in limits, which prominently reminds the user of the current test results. This function has strong advantages in large-scale production lines and instrument routine performance maintenance.

● Maintenance of linear performance of antenna feeder

From the perspective of conventional radio maintenance, data shows that many faults are actually caused by feeder cables and antennas rather than the radio itself. The high return loss caused by cables, joints, or antennas can be represented by a large VSWR value. Therefore, it is necessary for the tester to test the standing wave ratio of feeder cables and antennas. It can isolate faults in the feeder, joints, or antenna parts, and use the built-in standing wave ratio testing module to test the standing wave performance of cable ports. It can also locate the distance of the fault point based on the actual transmission rate of various types of cables. In this case, it is often not necessary to send the radio for repair, thus avoiding the downtime of the radio system.

Key Metrics

Dual independent RF signal source

Dual sources can choose one signal source to output independently, or they can be combined internally for output.

frequency characteristics

Frequency range: 2MHz to 1000MHz (Source 1)
2M-400MHz (Source 2, ANT port output)
Frequency resolution: 1Hz
Accuracy: Same frequency standard

Amplitude characteristic

Output level range: -5dBm to -65dBm (SWR, source 1)
-5dBm~-100dBm (ANT, Source 1)
-50dBm～-125dBm（T/R， 源1）
+5dBm~-100dBm (ANT, source 2)
Level accuracy: ± 2dB (≥ -100dBm)
±3dB(＜-100dBm)

Spectrum purity

Single sideband phase noise: ≤ -90dBc/Hz (frequency offset 20kHz)
Harmonic parasitism: ≤ -30dBc
Non harmonic parasitic: ≤ -40dBc (frequency offset greater than 20kHz)

Internal FMCharacteristics（Audio 1And audio 2)

Modulation rate range: 20 Hz to 20.0 kHz
Frequency offset range: 0Hz to 100kHz
Accuracy: ± 5% (2kHz to 50kHz frequency offset, 150Hz to 5kHz modulation rate)

External FMfeature

Microphone input:
Voltage range: 20-350mVrms
Modulation rate range: 300Hz to 10kHz
Frequency offset range: 0Hz~80kHz
Slope: Positive voltage generates positive frequency offset
External audio input:
Switchable load: 150, 600, 1k, High Z
Input voltage level: 0.05 to 3Vp
Frequency range: 300Hz to 5kHz
Slope: Positive voltage generates positive frequency offset

Internal AMCharacteristics（Audio 1And audio 2)

Modulation frequency: 30Hz~5kHz
Adjustment range: 0 to 100%
Modulation accuracy: ± 5% (150Hz to 5kHz slope, 10% to 90% modulation)

External AMfeature

Microphone input:
Voltage range: 20-350mVrms
Modulation rate range: 300Hz to 3kHz
Modulation range: 0-80%
External audio input:
Switchable loads: 150600, 1K, High Z
Input voltage level: 0.05 to 3Vp
Frequency range: 300Hz to 5kHz

Dual audio sources (Audio 1 and Audio 2)

Frequency range: 20Hz to 20kHz
Frequency resolution: 0.1Hz
Frequency accuracy: Frequency standard ± 2Hz
Output level: 20mVrms~1.57Vrms
Output level resolution: 0.01Vrms
Output level accuracy: ± 5%+5mv
谐波失真： ＜3% (1kHz 比率,正弦, 300Hz 至3kHz)
Output current: ＜ 15mA
Output: single tone, double tone

RF frequency error meter

Input frequency range: 2MHz to 1000MHz
Error capture range: ± 200kHz
Resolution: 1Hz
Accuracy: Frequency standard ± 2Hz

Received signal strength meter (RF power within the receiver IF bandwidth)

Input frequency range: 2MHz to 1000MHz
Display range:
DBm: -110dBm to+43dBm (+53dBm, set to 20dB using an external attenuator)
W: 10pW to 20W (200W, set to 20dB using an external attenuator)
Available RF level range:
T/R port: -50dBm to+43dBm
ANT port (RF amplifier not connected): -90dBm to -10dBm
ANT port (RF amplifier connected): -110dBm to -10dBm
Resolution: 0.01dB
Accuracy: ± 3dB

RF power meter (T/R port broadband input RF power)

Display range:
External attenuation set to 0dB: 0 to 43dBm (0 to 20W)
External attenuation set to 20dB: 0 to 53dBm (0 to 200W)
Zui small input level: 0.10W/+20dBm
Maximum input level: 20W/43dBm at+25 ℃ for 10 minutes or until overheating alarm (without external attenuator)
Accuracy: The built-in attenuator is ± 1dB

FMFrequency offset table

Frequency offset range: 500Hz~100kHz
Mode: Peak+, Peak -, (Peak+- Peak -)/2
Resolution: 1Hz
Accuracy: ± 5%, 1kHz to 10kHz frequency offset, 150Hz to 1kHz modulation rate

AMModulation depth table

Range: 5% to 100%
Mode: Peak+, Peak -, (Peak+- Peak -)/2
Resolution: 1%
Accuracy: ± 5%, 1kHz modulation rate, 30% to 90% depth, 3kHz LPF

Spectrum analyzer (optional)

Frequency range: 2MHz to 1GHz
Scan width: 10kHz to 998MHz, in order of 1, 2, and 5
Reference level range: -100 to+50dBm
Equivalent RBW (resolution bandwidth) range: 10Hz~3MHz (1, 3, 10 steps)
Display average noise level (DANL): -120dBm (typical value, 10kHz bandwidth)

SWRmeasurement

VSWR range: 1.00 to 20.00
Resolution: 0.02
VSWR accuracy:
± 10% of SWR reading (calibration value)<300MHz
± 20% of SWR reading (calibration value) ≥ 300MHz

Return loss (RL) measurement

Range: 0.0 to -50.0dB
Resolution: 0.01dB

Cable loss measurement

Range: 0.0 to -50.0dB
Resolution: 0.01dB

DTFmeasurement

Measurement range: 1m to 100m
Return loss range: 0.0 to -50.0dB
Speed: 0.00 to 1.00, automatically selected based on cable type

Xinnabi meter (1kHz audio)

Measurement signal source: audio input, demodulated signal
Audio frequency: 1kHz
Display range: 0 to 40dB
Resolution: 0.1dB
Accuracy: ± 1.5dB, from 8 to 35B

Harmonic Distortion Meter (1kHz Audio)

Measurement signal source: audio input, demodulated signal
Audio frequency: 1kHz
Display range: 0 to 100%
Resolution: 0.1%
Accuracy: ± (5% * measured value+0.1%), from 1% to 20%

Total Distortion Table (1kHz Audio)

Measurement signal source: audio input, demodulated signal
Audio frequency: 1kHz
Display range: 0 to 100%
Resolution: 0.1%
Accuracy: ± (5% * measured value+0.1%), from 1% to 20%

Audio counter

Audio input frequency range: 20Hz to 20kHz
Audio input level: 20mVp to 30Vp (two ranges)
Resolution: 0.1Hz
Accuracy: ± 1Hz

Audio voltmeter

Audio input frequency range: 20Hz to 20kHz
Audio input voltage: 20mVp to 3Vp (range 1)
1Vp to 30Vp (range 2)
Accuracy: ± 5%

DVMtable

Input frequency range: DC to 20kHz
Input impedance: 1M Ω
Coupling: AC, DC
Input voltage level:
20mVp to 3Vp (range 1)
1Vp to 60Vp (range 2)
Accuracy: ± 10% (range 1)

Audio oscilloscope (optional)

Signal source: external audio, DVM input, demodulated signal
Scanning line: 1
Tag: 2
Trigger:
Type: Automatic, Standard, Single Time
Pulse edge: rising edge, falling edge
Trigger level can be set: -60V to+60V (depending on the range setting)
Level:
Range: 0.2 milliseconds/grid to 50 milliseconds/grid, in order of 1/2/5
Accuracy: ± 5%
Vertical:
Range: 10mV to 20V/grid, in order of 1/2/5
Accuracy: ± 10%, within the full range
Coupling:
Audio input: AC
DVM input: AC, DC
Input impedance:
Audio input: 150 Ω, 600 Ω, 1k Ω, high impedance
DVM input: 1M Ω
Bandwidth: 20kHz

Attachment: Internal Time Base

Aging rate: 1'10-6/year
Temperature stability: 1'10-6

General characteristics

job characteristics

Ordering Information

Standard Configuration

(1) AV4992A-STD001 Handheld Wireless Comprehensive Tester Host
(2) AV4992A-STD002 Product User Manual
(3) AV4992/A-STD3 Random Disc

(4) AV4992/A-STD004 AC-DC Adapter
(5) AV4992/A-STD005 three core power cord
(6) Certificate of Conformity

option

(1) AV4992A-OPT001 oscilloscope
(2) AV4992A-OPT002 Spectrum Analyzer
(3) AV4992A-OPT003 rechargeable battery pack
（4）AV4992A-OPT004 MicroSD Class4(8G)
(5) AV4992A-OPT005 GPS External Antenna (BNC)
(6) AV4992A-OPT006 External Audio Box
(7) AV4992A-OPT007 functional backpack
(8) AV4992A-OPT008 Shoulder Carrying Bag
(9) AV4992A-OPT009 Safety Transport Box

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