VIAVI Aeroflex 3920B Digital Radio Test

If you are looking for the absolute gold standard in commercial, public safety, and critical military communications testing, the VIAVI Aeroflex 3920B is the heavy-hitter you want on your bench. Building on the massive success of the older 3900 series, the 3920B steps up the game with a faster processor, an incredibly low-noise signal generator, and an ultra-precise RF testing environment.

In the modern radio servicing industry, juggling multiple radio types can be a logistical headache. One hour you are tuning a legacy analog FM system, and the next you are running precise digital alignment scripts on a complex trunked network. The VIAVI 3920B handles this effortlessly. It is a completely software-defined platform that replaces a whole rack of discrete equipment—including spectrum analyzers, oscilloscopes, meters, and signal generators—consolidating them into one rugged, high-throughput machine.

Why the “B” Series is a Game-Changer for Modern RF Labs

The true magic behind the “B” designation in the 3920B lies under the hood. VIAVI Aeroflex 3920B completely re-engineered the internal RF synthesizer block to drastically lower the phase noise floor. Why does this matter to you? When you are working with tight, narrow-band digital receivers, your test equipment must be absolutely clean.

Because the 3920B provides an ultra-pure RF signal, you can measure adjacent channel selectivity and receiver quieting down to the tightest manufacturer specifications without worrying about instrument-induced errors. It removes all the guesswork from your troubleshooting loops, giving you absolute validation confidence.

One Platform, Seamless Multi-Protocol Support

Instead of purchasing different hardware modules for every new radio format your clients bring in, the 3920B lets you activate digital protocol tracking via simple software updates. It supports a massive array of standard professional mobile radio (PMR) protocols, including:

• APCO P25 Phase 1 & Phase 2: Full trunking and conventional parameter checking.

• DMR (Digital Mobile Radio): Essential for commercial fleet networks.

• TETRA: Comprehensive mobile and base-station protocol analysis.

• NXDN & dPMR: Perfect for highly selective narrow-band testing.

• Legacy AM / FM / SSB: Full analog test capability remains standard.

Hands-Free Calibration with Auto-Test Applications

Manual radio tuning can eat up hours of valuable workshop labor. To maximize your bench throughput, the VIAVI 3920B supports a wide suite of Auto-Test and Alignment software applications.

When paired with leading radio systems from Motorola, Harris, Kenwood, and Icom, the 3920B connects directly to the transceiver. It completely automates the process—testing frequencies, adjusting internal alignment values, tracking deviation, and printing out full pass/fail verification certificates—without requiring constant technician oversight. It is like having an automated assistant built right into your test set.

Technical Specifications VIAVI Aeroflex 3920B

To help your engineering team cross-reference their exact calibration requirements, here are the core performance benchmarks for the VIAVI 3920B platform:

1. RF Signal Generator VIAVI Aeroflex 3920B

• Frequency Range: 10 MHz to 2.7 GHz continuous coverage

• Frequency Resolution: 1 Hz fine-tuning increments

• Output Level Accuracy: Exceptional ±1.0 dB down to -130 dBm

• SSB Phase Noise: Lower than -110 dBc/Hz at 10 kHz offset (1 GHz carrier)

2. RF Receiver & Power Tracking

• Input Frequency Range: 10 MHz to 2.7 GHz

• Power Handling Capacity: 50 Watts continuous (and handles up to 125 Watts peak surges on the T/R port)

• Power Meter Accuracy: High-grade ±10% down to low-level mobile inputs

3. Audio & Oscilloscope Functions

• Audio Generators: Three independent, low-distortion audio tone synthesizers

• Digital Oscilloscope Bandwidth: DC to 50 kHz tracking envelope

• Spectrum Analyzer Span: Fully adjustable from 10 kHz up to a massive 2.7 GHz full-scan tracking loop

Performance Matrix At-A-Glance

Frequently Asked Questions (FAQ)

Can I upgrade my 3920B to support Phase 2 P25 if it only has Phase 1 right now?

Yes, absolutely! Because the VIAVI Aeroflex 3920B architecture is entirely software-defined, you can easily load newer protocol licenses, automated alignment scripts, and firmware options directly onto the unit via the USB port without changing any physical boards.

What is the benefit of the 2.7 GHz frequency extension on the 3920B?

The extended 2.7 GHz range ensures that your workshop can confidently handle higher frequency commercial cellular links, microwave backhauls, telemetry systems, and modern military communication bands that fall well outside the standard 1 GHz limit.