3920 Radio Test Set - Aeroflex

By: Aeroflex  11-11-2011
Keywords: Digital Radio, Digital Radio Test Set

Introducing the Newest Generation PMR Test Platform

The 3920 is the latest in next generation portable test for advanced professional analog and digital radio communications. Building upon a long-standing reputation for excellence in professional radio communication test, the 3920 from Aeroflex sets a new benchmark for quality, ease of use, performance and value.

Within the 3920 Series is a Pentium based processor coupled with a stable Linux platform provides a solid foundation for a powerful systems based test solution capable of addressing many different technologies. Three powerful digital signal processors can deliver unparalleled performance to address many different test requirements with ease. An internal 40 GB hard drive provides virtually unlimited storage for user setups, screen shots and test data. Files can be easily transferred to a USB thumb drive for external storage or processing. Setup files can be easily transferred from one instrument to another.

The platform also supports the ability to add software options to expand the measurement and signaling capabilities for communications systems that utilize advanced digital modulation and protocols.

The 3920 platform is capable of testing the following systems:

  • Analog – FM, AM, AM USB, AM LSB
  • P25 Conventional
  • P25 Trunking
  • TETRA – BS, BS T1, DM, MS, MS T1
  • SmartNet™/SmartZone™ Trunking (Analog or Digital handoff)
  • dPMR – Digital Private Mobile Radio
  • NXDN™ - 4800/9600 baud
  • DMR – Digital Mobile Radio
  • HPD® - High Performance Data
  • ARIB STD-T98


  • Auto-Test II Scripting Support to build internal test applications
    • Motorola XTS-5000 Series Alignment
    • Motorola XTS-3000 Series Alignment
    • Motorola APX™ Series Alignment
    • EF Johnson Radio Alignment
    • BK DPHx Radio Alignment

P25 Trunking Option
Aeroflex has an exclusive new option for the Aeroflex 3920 Series Digital Radio Test Set to support P25 Trunking. Designed to support the needs of basic P25 testing as well as complex analysis of advanced P25 systems, the 3920 Series features powerful analysis tools with an easy to use graphics interface. The new P25 Trunking Option (option 201) supports trunking operation in the VHF/UHF/700 MHz and 800 MHz bands. Exclusive features include the ability to simultaneously generate a control channel and traffic channel with duplex offset capability to go from 1 MHz to 2.7 GHz. With the 3920 Series, operators with radios on P25 systems can rest assure their radios are in proper working order, providing the critical interoperability needed for today's communications.

Designed for Flexibility, Speed, Ease of Use and Accuracy
The all-new digital architecture of the 3920 not only delivers faster, more accurate measurements, thereby lowering the cost of test when compared to any of its contemporaries and predecessors, but also ensures that future market needs can be met in a timely fashion. The future of professional mobile radio is changing rapidly as technology advances and market needs expand and the 3920 is a platform that will stand the test of time.

APX™ Series Alignment Application

The APX Series radios are dual band and can be configured with any two band combinations. The application will test and align both bands. Mobile power alignment is included in this option and requires the use of the standard internal DMM and optional AC24011 10 AMP Current Shunt. Alignment time for both bands on the APX mobile is approximately 16 minutes. The radio's standard USB programming cable is used directly by the 3920 to control the radio in test mode. Both Analog and Digital tests are performed to ensure the radio is performing at optimum performance. Alignments are available for Power, Frequency, Deviation Balance and Front End. P25 Performance tests are available for Modulation Fidelity, Symbol Deviation and RX BER. Proper alignment will ensure the radio has maximum coverage performance.

Test results are automatically stored each time a radio is tested. Stored test results can be moved to a computer or printed directly from the instrument itself. Specifications are user definable allowing specific customer requirements to be accommodated. The application also has the ability to sweep test cables to gain a loss factor for each test frequency that is being tested. Loss factors can be much different between frequencies and bands. The compensation factor is automatically applied to all power readings as well as a compensation factor for the signal generator when testing RX BER.

XTS-5000 Alignment Application

Validate radios faster than ever with ease. Connect a single cable, press "Test and Align" and you are free to do more important things. This application is self contained within the 3920 and automatically performs the functions of radio alignment and verification to ensure optimal radio performance. Tests and aligns radios in as little as 6 minutes. Supports Portables: XTS-5000, XTS-2500, XTS-1500, XTS-4000, SSE-5000, MT-1500 and Mobiles: XTL-5000, XTL-2500, XTL-1500.


  • Reference Oscillator
  • High Power
  • Mid Power
  • Low Power
  • Deviation Balance
  • Deviation Limiting
  • Front End Alignment (700/800 MHz band only)

Performance Tests

  • P25 Modulation Fidelity
  • P25 Symbol Deviation
  • P25 RX BER

LMR Auto Test
Validate radios faster than ever with ease. This application is self contained within the 3920 and automatically performs the test functions as prescribed by the EIA/TIA-603 standards for testing any FM Land Mobile Radio. Configure up to 30 channels with independent test customization for each channel.

TX Tests
  • Frequency
  • Power
  • Microphone Sensitivity
  • Modulation Limiting
  • Audio Distortion
  • Audio Frequency Response
  • FM Hum and Noise
RX Tests
  • Audio Distortion
  • Audio Sensitivity
  • Audio Frequency Response
  • Usable Sensitivity
  • Displacement Bandwidth
  • Audio Squelch Sensitivity
  • Audio Squelch Blocking
  • Hum and Noise

Test High/Low or Both power level settings on any channel with support for a PTT line to auto-key/de-key the transmitter. Single channel test execution is allowed to re-check failed channels. Supports re-test, accept failure or abort on any failed test. Supports Store and Recall for Test Configurations and Test Results. Network or local printer support allows for an immediate hard copy to be obtained.

A new option that enables the Aeroflex 3920 Series Digital Radio Test Set to test and align a wide range of DMR radios. DMR radio technology is a new digital radio format offering advanced communications features specified by the ETSI technical standard 102-361. DMR technology is currently under development or being released by a number of OEM radio manufacturers, and includes Motorola’s new MOTOTRBO™ technology.

With Aeroflex's newest software release, Version 1.7.7, for the Aeroflex 3900 Series Digital Radio Test Set that includes support for Motorola’s Astro SmartNet™/SmartZone™ systems, including support for rebanded channels in the 800MHz band.

KVL Keyloader
The KVL Keyloader Option adds the ability to enter encryption keys into the 3920 for DES and AES. Encryption keys may be loaded manually using either the front panel or external keypad, or the Project 25 Key Fill Device (KFD) interface protocol. Additionally, keys may be loaded using KVL ASN mode of operation found in KVL-3000 and older model key loaders from Motorola.

  • Automating drive test measurements of signal strength and P-25 BER
  • Compliance testing/analysis
  • Indoor coverage testing for sports arenas, office buildings, etc.

Digital Multimeter
New for the 3920 is the Digital Multimeter option, number 3920OPT053. With this option come three new ports on the front panel that are used for measuring AC/DC volts, AC/DC amps, and OHMS.

Tracking Generator Option
The 3920 includes a tracking generator as part of the spectrum analyzer. The tracking generator enables the 3920 to sweep cables, antennas, duplexers, and other RF components of an analog or digital system.

Harmonics and Spurious Option
With the 3920, measuring the harmonics and spurious of a transmitted signal is as easy as pushing a button. This option automatically and quickly finds the second and third harmonics and the spurious signals. It operates by first finding the frequency of the fundamental and then taking measurements at the location of the second and third harmonics. Then it does a search for spurious by searching through the entire band, looking for any signal that is greater than a level set by the user. All of this information is then presented to a user in an easy to read and interpret format.

Auto-Test II Option for Analog Duplex
By using the TCL scripting language the user can develop their own analog duplex test. Going far beyond the capability of the original Auto-Test, Auto-Test II provides the tools for the development of applications that can include softkeys, user input and test results. The control of the functions of the box is through the same commands that are used for RCI. This gives the user the power to create their own way of using the 3920, and it is done with a language that is familiar to many programmers.

Analog Duplex Features
Analog duplex features are a standard part of the 3920 Radio Test Set. This test system supports extensive testing for FM/AM/SSB radios, including:

  • Full analog duplex operation from 1 MHz to 1 GHz or 2.7 GHz respectively
  • Full span spectrum analyzer with displayed average noise level of -125 dBm
  • Three independent audio modulation sources from 1 Hz to 20 kHz
  • Upper and lower single side band (SSB) transmitter and receiver testing
  • Auto-Test Analog option

Features Emulate the HP/Agilent 8920 Series Analog Tests
The 3920 provides test features found on the HP/Agilent 8920 used extensively in the analog radio production environment. Included is a remote language interpreter that allows users an upgrade path from their obsolete 8920's. This interpreter provides many compatibility commands to reduce the number of changes required to existing applications that control the 8920 over a GPIB interface.

The 3920 has system personality options for ETSI TETRA (Terrestrial Trunked Radio) mobile terminal and base station testing. New for the 3920 are test capabilities for TETRA direct mode operation. This package provides features for testing TETRA mobile direct mode call setup and parameters.

HPD® High Performance Data
This test mode has been developed by Aeroflex for Motorola to address the need for testing their High Performance packet Data operation on both mobiles and base stations in the 700 and 800 MHz bands. This system personality supports extensive testing of HPD® radios, including:

  • Generate/Receive HPD® signals
  • Modulation - 64QAM, 16QAM and QPSK
  • Transmitter Parameters including Signal Power, Frequency Error, EVM, Symbol Clock Error, RX BER, Burst Timing Error and Occupied Bandwidth
  • I & Q Modulation Analysis including constellation and trajectory plots of the data symbols, synch and pilot bits
  • Data I/O port - Allows the user to send data via the 3920 to the HPD® radio using XML commands to send blocks of data
  • Received Data Stream Logger. Logs the data portion of the HPD® signal and displays it in hex
  • Eye Diagram and I/Q over time displays
  • Power Profile - Shows the power over time and in a burst (TDMA transmission)
  • Power Ramps - Shows the power up and power down portion of the TDMA burst

An option for testing P25 Conventional is available for the 3920 Digital Radio Test Sets. This optional feature provides the 3920 with the ability to transmit and receive P25 modulated signals and perform RF and modulation measurements on P25 radios and systems. In addition, the 3920 also features the new 390XOPT201, P25 800MHz, 700MHz, VHF and UHF Trunking Option. Additional P25 features will be released in the near future including AES/DES encryption.

Designed for Flexibility, Speed, Ease of Use and Accuracy
The all-new digital architecture of the 3920 not only delivers faster, more accurate measurements, thereby lowering the cost of test when compared to any of its contemporaries and predecessors, but also ensures that future market needs can be met in a timely fashion. The future of professional mobile radio is changing rapidly as technology advances and market needs expand and the 3920 is a platform that will stand the test of time.

Keywords: Digital Radio, Digital Radio Test Set

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