Home ANRITSU | Mobile Wireless Communications Measuring Instruments Site Master Handheld Cable and Antenna Analyzer S331L
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ANRITSU | Mobile Wireless Communications Measuring Instruments

Site Master Handheld Cable and Antenna Analyzer S331L

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The Anritsu S331L is a rugged, handheld cable and antenna analyzer built for demanding field conditions. Covering 50 MHz to 4 GHz, it offers essential RF measurements like Return Loss, VSWR, DTF, and RF Power with a full-day battery life and a large 7” outdoor-viewable touchscreen. Lightweight and highly durable, the S331L is ideal for tower contractors, wireless service providers, and public safety technicians performing routine maintenance and installations..

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The S331L Site Master is engineered for field professionals requiring a reliable, compact solution for cable and antenna analysis. It replaces the S331D while introducing modern features like a 7” TFT touchscreen, long battery life, and high-capacity internal memory.

The analyzer is ideal for line sweep testing, antenna system maintenance, and fiber inspection. With comprehensive measurement capabilities—Return Loss, VSWR, Cable Loss, DTF, and RF Power—it ensures accurate diagnostics across all critical RF components. The VIP mode offers optical connector inspection using the optional USB probe, providing IEC-compliant pass/fail evaluations.

The unit integrates with the Smart Aligner Android application, allowing seamless generation of site close-out reports combining sweep results and antenna alignment data. Designed for contractors, installers, and telecom technicians, the S331L delivers high-performance diagnostics in a durable, cost-effective package—making it the best value in its class.

  • Lightweight and rugged design (< 2.0 kg) with dust and splash resistance.

  • Full workday battery life for uninterrupted field operations.

  • Frequency range from 50 MHz to 4 GHz for wide RF coverage.

  • Large 7” TFT touchscreen display, optimized for outdoor visibility.

  • Intuitive GUI with classic S331D mode for legacy users.

  • Performs Return Loss, VSWR, Cable Loss, Smith Chart, DTF, and RF Power measurements.

  • 50/75 ohm Smith Chart and 1-port phase measurement support.

  • VIP Mode for fiber optic inspection (requires USB Video Probe G0306A).

  • Smart Aligner App compatibility for integrated sweep and alignment reports.

  • High internal memory for storing large test datasets in the field.

Parameter Details
Model S331L
Frequency Range 50 MHz – 4 GHz
Weight < 2.0 kg (4.4 lbs) with battery
Display 7” outdoor-viewable TFT touchscreen
Power Internal rechargeable battery
Measurements Return Loss, VSWR, DTF, Cable Loss, RF Power
Other Features Smith Chart (50/75Ω), 1-port Phase, VIP Mode
Battery Life Full workday operation
Compatibility Smart Aligner App, Multiwave Tools
Software Anritsu Software Tool Box