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Digital Radio Test Set

Designed for Flexibility, Speed, Ease of Use and Accuracy
The advanced 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.


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 C4FM/LSM / CQPSKPhase 2 HDQPSK/HCPM
  • Trunking C4FM/LSM/CQPSK/X2-TDMA™
  • Analog SmartZone™ and SMARTNET™ Trunking (Analog or Digital P25 handoff)
  • Off Air Monitor for Protocol Analysis
  • HPD - High Performance Data
  • DMR – Digital Mobile Radio
  • NXDN™ - 4800/9600 baud
  • TETRA – BS, BS T1, DM, MS, MS T1
  • dPMR – Digital Private Mobile Radio
  • ARIB STD-T98
  • Advanced capabilites
  • IQ Generator functions
  • Site Survey coverage analysis
  • P25 Protocol analysis
  • Auto-Test II system for automated testing with applications


  • Auto-Test II Scripting Support to build internal test applications
    • Motorola ASTRO® 25 Series Mobile/Portable Alignment
    • Motorola ASTRO® Series Mobile/Portable Alignment
    • Motorola APX™ Series Alignment
    • Motorola MOTOTRBO™ XPR Radio Series Alignment
    • Motorola TETRA MS MTP-800 Series Autotest
    • DMR Repeater Autotest
    • EF Johnson ES Series Radio Alignment
    • BK DPHx5102x Radio Alignment


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.

IQCreator™ Compatibility (390OPT054)
The 3920 supports the popular Aeroflex IQCreator software from Aeroflex and has the ability to generate single or multiple carriers with user defined digital or analog modulation types unique to each carrier within a 50 kHz bandwidth (actual bandwidth is dependent on the maximum sample rate). With IQCreator capability, the 3920 now provides a high level of future-proof capability by providing engineers and production test users the ability to update their 3920 generator capabilities with digital modulation formats, whether they are proprietary or part of a new standard.

Harmonics and Spurious Option (390XOPT060)
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.

Tracking Generator Option (390XOPT061)
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.

APCO P25/Project 25 (390XOPT200)
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. P25 Measurements include: Modulation Fidelity, Symbol Deviation, Symbol Clock Error, TX Bit Error, RX Bit Error, Frequency Error, and Transmit Power. This system supports all modulation formats that are available in P25 systems.  Available modulation formats for P25 Phase 1 include: C4FM, CQPSK, LSM (Linear Simulcast Modulation).  Phase 2 modulation formats: HDQPSK and HCPM are now available as well.  Powerful diagnostic displays provide immediate indications of transmitter performance.  Graphical displays include: Symbol Distribution Plot, Eye Diagram, Constellation and Trajectory Plots. These powerful tools provide immediate indications of a transmitter’s performance characteristics.  Poor performance from the transmitter can cause a severe reduction in coverage area for digital systems.

APCO 25/P25 Trunking Option (390XOPT201)
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.

SmartZone™ and SMARTNET™ (390XOPT207)
The Aeroflex 3900 Series Digital Radio Test Set includes support for Motorola's ASTRO SmartNet™/SmartZone™ systems, including support for rebanded channels in the 800 MHz band.

KVL Keyloader (390XOPT209)
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.

P25 Phase 2 TDMA operation (390XOPT220)
Aeroflex has developed the P25 Phase 2 TDMA operation to meet the needs of radio technicians to test P25 portables, mobiles, and base stations to the latest standard.   P25 phase 2 measurements can be made on both H-CPM and H-DQPSK signals.  The phase 2 operation adds the following capability to the P25 operation of the 3920:

  • H-CPM (inbound modulation) modulation and demodulation
  • H-CPM eye diagram, distribution plot, and constellation
  • H-DQPSK (outbound modulation) modulation and demodulation
  • H-DQPSK eye diagram, distribution plot, and constellation
  • Generation of all H-CPM standard patterns
  • Generation of all H-DQPSK standard patterns
  • Unit-under-test (UUT) measurements for Phase 2 including modulation fidelity, symbol deviation, symbol clock error, frequency error, power and TX bit error
  • Power profile diagrams of both full slots and ramp-up/ramp-down for H-CPM modulation.

STI Site Survey
Field Test 7 with street data for the entire USA, GPS receiver/antenna, and a long list of capabilities including:

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


Auto-Test II Option
The Aeroflex 3900 Series Digital Radio Test Set supports an internal programming environment that allows operation of Aeroflex automatic test and alignment options to be installed or allows the end user to develop their own test programs using the built in TCL scripting language. The Auto-Test II system 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. Auto-Test II is available separately for each supported system.

APX™ Series Alignment Application (390XOPT604)

The APX Series radios are dual band and can be configured with any two band combinations. The application will test and align installed 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). 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, Referemce Oscillator, Deviation Balance and Receiver 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 can be automatically stored each time a radio is tested. Stored test results can be moved to a computer or printed directly from the instrument itself. 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.

ASTRO®/ASTRO® 25 Test and Alignment Application (390XOPT600/390XOPT601/390XOPT602)

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. ASTRO 25 Supports Portables: XTS®-5000, XTS-2500, XTS-1500, XTS-4000, SSE-5000, MT-1500 and Mobiles: XTL®-5000, XTL-2500, XTL-1500. ASTRO Supports XTS-3000, Saber and Spectra


  • 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 (390XOPT603)
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.

EF Johnson Radio Auto Alignment (390XOPT606)
This option adds the capability to do a fully automatic alignment on EF Johnson P25 radios. The option has the same features as option 390XOPT600, but for EF Johnson P25 radios. 

BK DPHx5102x Radio Auto Alignment (390XOPT607)
This option adds the capability to do a fully automatic alignment on BK DPHx5102x radios.

A new option that enables the Aeroflex 3920 Series Digital Radio Test Set to test and align a wide range of DMR radios and repeaters. The built in vocoder allows voice communications test and off air monitoring.  Built in speech patterns also allow for quick sensitivity measurements.  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.

Measurements Graphical Displays
Broadband Power Signal Power Symbol Distribution Plot Power Over Time
Frequency Error Slot Power Ratio Eye Diagram  
Slot 1 Power Slot 2 Power Constellation Plot  
FSK Error Symbol Deviation Power Profile Full  
Magnitude Error TX Bit Error Power Profile Ramps  

NXDN® (390XOPT440)
Add advanced testing capability for NXDN with 390XOPT440. This option enables the Aeroflex 3920 Series Digital Radio Test Set to perform a variety of Transmitter and Receiver tests on any NXDN radio. Transmitter measurements include:

  • Signal power
  • Frequency error
  • FSK error
  • Symbol deviation
  • TX BER
  • Symbol clock error

The system supports both 4800 and 9600 baud systems. Measurements can also be displayed as an EYE diagram, symbol distribution plot and a symbol constellation plot. A power over time graph is provided to diagnose a variety of power-related issues.
Receiver testing is supported with a variety of signal generation patterns.

  • STD 1031 (1031 Hz pattern)
  • STD CAL (1031 Hz pattern with 5% BER)
  • STD 511 (PN9 bit sequence)
  • STD INTFR (PN15 bit sequence)

TETRA (390XOPT110 - 390XOPT115)
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.

Options and accessories
3920 Digital Radio Test Set 1MHz - 1GHz with Standard Analog Duplex Operation and DMM
390XOPT110 TETRA MS (Mobile Station Testing)
390XOPT111 TETRA BS (Base Station Testing)
390XOPT112 TETRA DM (Direct Mode Testing)
390XOPT114 TETRA Energy Economy Mode (Requires 390XOPT110)
390XOPT115 TETRA Autotest II
390XOPT051 Site Monitoring Application
390XOPT054 IQ Gen Modulation (for IQ Creator waveforms)
390XOPT055 Audio Analyzer
392XOPT058 2.7GHz Frequency Range Extension Option
390XOPT059 Auto-Test II Analog
390XOPT060 Harmonics & Spurious Measurements
390XOPT061 Tracking Generator
390XOPT064 Analog Duplex Power Between Markers
390XOPT090 Chinese GUI
390XOPT200 P25 Conventional Operation (with DES OFB Type III)
390XOPT201 P25 Trunking Operation VHF/UHF/700/800MHz (Requires 390XOPT200)
390XOPT204 LSM Generate and Receive/Analysis (Requires 390XOPT200)
390XOPT206 P25 Control Channel Logger Option (Requires 390XOPT200)
390XOPT207 SMARTNET™/SmartZone™ Option (Requires 390XOPT200)
390XOPT209 KVL Keyloader Option (Requires 390XOPT200)
390XOPT210 Analog Simulcast Option (Requires 390XOPT055)
390XOPT212 Explicit Mode Trunking (Requires 390XOPT200 and 390XOPT201)
390XOPT213 Unit to Unit Call (Requires 390XOPT200, 390XOPT201 and 390XOPT212)
390XOPT214 Adjacent Channel Broadcast Message (Requires 390XOPT200 and 390XOPT201)
390XOPT215 Secondary Control Channel Broadcast Message (Requires 390XOPT200 and 390XOPT201)
390XOPT218 Autotest II for P25 Radio Systems (Requires 390XOPT200)
390XOPT219 X2 TDMA Test Suite (Requires 390XOPT200 and 390XOPT201) - (Available through Motorola Only)
  Motorola Price  - ,500
390XOPT220 Phase 2 Two-Slot Time Division Multiple Access Physical Layer (Requires 390XOPT200)
390XOPT230 Off Air Monitor Software for P25 Message Logging - Protocol Analysis Tool (Requires 390XOPT200 and
390XOPT240 P25 AES Encryption (Requires 390XOPT200) (U.S. DoC License Required, Contact Wichita Export
   Administration for details.)
390XOPT245 X2 TDMA Mobile Emulator  (Requires 390XOPT200 and 390XOPT201 and 390XOPT219) - 
   (Available through Motorola Only)
390XOPT250 Occupied Bandwidth for P25 (Requires 390XOPT200)
390XOPT260 P25 Performance Test Triggers
390XOPT261 X2 TDMA Advanced Test Suite - Combines 390XOPT219 & 245  (Requires 390XOPT200 and
  390XOPT201) - (Available through Motorola Only)
390XOPT300 Motorola HPD® Testing Option (Available through Motorola Only)
390XOPT301 Motorola HPD® Advanced Analysis Package (Available through Motorola Only)
390XOPT302 Motorola HPD® Testing Suite Combines 390XOPT300 and 390XOPT301 (Available through Motorola Only)
390XOPT303 Autotest II for HPD® Radio Systems (Requires 390XOPT300)
390XOPT400 DMR (MOTOTRBO™) ETSI 102-361
390XOPT401 Autotest II for DMR Radio Systems (Requires 390XOPT400)
390XOPT402 DMR XML Channel Logger Option (Requires 390XOPT400)
390XOPT420 dPMR - ETSI 102-490
390XOPT421 Autotest II for dPMR Radio Systems (Requires 390XOPT420)
390XOPT422 dPMR Control Channel Logger Option (Requires 390XOPT420)
390XOPT440 NXDN 
390XOPT441 Autotest II for NXDN Radio Systems (Requires 390XOPT440)
390XOPT460 ARIB T98
390XOPT461 Autotest II for ARIB T98 Radio Systems (Requires 390XOPT460)
390XOPT600 Motorola  XTS-3000 series Autotest / Alignment Software (Requires 390XOPT200 and OPT218) 
390XOPT601 Motorola  ASTRO®25 series Autotest / Alignment Software (Requires 390XOPT200 and OPT218)
390XOPT602 Motorola  ASTRO®25 series XTL™ Power Autotest / Alignment Software (Requires 390XOPT600, OPT200,
   OPT218, and AC24011)
390XOPT603 TIA/EIA-603 FM Land Mobile Test Software (Requires 390XOPT059)
390XOPT604 Motorola APX™ series Autotest / Alignment (Requires 390XOPT200 and OPT218 and AC24011)
390XOPT606 EF Johnson ES series Autotest / Alignment Software (Requires 390XOPT200 and OPT218)
390XOPT607 BK DPHX5102X series Autotest / Alignment Software (Requires 390XOPT200 and OPT218)
390XOPT608 Kenwood P25 5X10 Series (Rev 3 Hardware Only) Autotest / Alignment Software (Requires 390XOPT200 and OPT218)
390XOPT610 Motorola MOTOTRBO™ XPR Radio Series Autotest / Alignment Software (Requires 390XOPT400 and OPT401)
390XOPT611 Motorola TETRA MS (MTP-850  Series) Autotest Software (Requires 390XOPT110, 390XOPT054 and 390XOPT115)
390XOPT614 Technisonic Type 1 Radios Series Autotest / Alignment Software (Requires 390XOPT200 and 390XOPT218)
390XOPT615 Technisonic Type 2 Radios Series Autotest / Alignment Software (Requires 390XOPT200 and 390XOPT218)
390XOPT626 DMR Repeater Autotestest Software (Requires 390XOPT400 and 390XOPT401)
Extended Standard Warranties for 390X
W390X/203 Extended Standard Warranty 36 Months
W390X/204 Extended Standard Warranty 48 Months
W390X/205 Extended Standard Warranty 60 months
Extended Standard Warranties with Calibration for 390X
W390X/203C Extended Standard Warranty 36 Months with scheduled calibration
W390X/204C Extended Standard Warranty 48 Months with scheduled calibration
W390X/205C Extended Standard Warranty 60 Months with scheduled calibration
Accessories for 390X  
AC24009 DMM Test Leads for use with 392XOPT053.  Category 3 rated.
AC24011 10 AMP Current Shunt  0.01 Ohm.
  5U Rack Mount Kit
  6U Rack Mount Kit
AC25083 Case, Transit W/Wheels (Pelican)
AC25012 Case, Soft Padded Carrying
AC25013 Kit, 10/20 dB Pads, TNC
AC25014 Scope Probe Kit
AC25023 Front/Rear Cover
AC25029 Accessory Pouch
AC25036 DC to AC Converter, 12VDC to 110-120VAC
AC25042 Antenna (BNC) (50 MHz)
AC25059 6 dB / 150 Watt 1.5 GHz Attenuator
AC25060 10 dB / 150 Watt 1.5 GHz Attenuator
AC25061 50 ohm 250 Watt 5 GHz Termination
AC25081 Site Survey Software
AC4105 Return Loss Bridge (1.3 GHz)
AC8645 Microphone
  3920 CD Maintenance Manual
CALFB392X Calibration Certificate
  Note: For Operations & Applications Training refer to 'Section 14 Other Information'
  Accessories Supplied as Standard for 390X
  1 x AC25023 Front/Rear Cover 
  2 x AC25027 Adapter (BNC-F to TNC-M)
  1 x Adapter (N-M to BNC-F)
  1 x 3900 Series Operation Manual (CD-ROM) 
  1 x AC Line Cord
  1 x AC25043 Antenna (BNC) (450 MHz)
  1 x AC25044 Antenna (BNC) (800 MHz)
  1 x AC25045 Antenna (BNC) (150 MHz)
  • 3Z Telecom
  • AMETEK Programmable Power, Inc.
  • Anritsu Corporation
  • EDIBON International
  • Leader Electronics Corp
  • SAF Tehnika JSC
  • Teamcast
  • VIAVI Solutions (d.Aeroflex)