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Site Master Cable & Antenna Analyzer + Spectrum Analyzer S331L

Site Master™ Handheld Cable & Antenna Analyzer

This product has been discontinued
  • 2 MHz to 4 GHz Handheld Cable and Antenna Analyzer, impact, dust, and splash resistant
  • More than 8 hours of continuous battery operation
  • Standard built-in InstaCal™ module and Power Meter
  • FlexCal™ maintains calibration with frequency changes
  • Familiar S331D-like Classic Mode and S331E-like Advanced Mode
  • Built-in one button Help function
  • 800x480 7” TFT touch screen display and multiple USB ports
  • Internally store >1000 files with fast preview of stored traces
  • Industry standard *.dat format compatible with Line Sweep Tools (LST) and HHST
  • Standard three-year warranty (battery one-year warranty)

The S331L is the highest value in a rugged, handheld cable and antenna analyzer. The S331L replaces the current value line S331D which is part of the longest running portable cable and antenna analyzer family in history. Utilizing the latest advancements in technology, the S331L has been optimized for field conditions, is easy to use, and has efficient sweep management capabilities. The S331L delivers an entire workday of battery operating time, the most ever offered in a handheld cable and antenna analyzer. With its large outdoor viewable 7” TFT touch screen display, new intuitive GUI, and classic mode that mimic the S331D basic measurement flow, the S331L is very easy to use, and can significantly increase a user’s efficiency in the field.

The S331L is for contractors, installers, and wireless service providers, who need an instrument to reduce per site maintenance expenses. Anyone who needs to make basic cable/antenna and power measurements will benefit from the new S331L Site Master. The simple no option configuration and high value pricing make the S331L ideal for tower contractors and can be easily provisioned by stocking distributors and rental companies alike.

For contractors who don’t have time to look for nearby power sources, the S331L will last an entire workday on a single battery charge, meaning you can be a lot more productive with your day. Not only does the Site Master S331L run longer, it also has a lot more memory internally so you don’t have to worry about running out of space for all of those extra measurements you just made. Your CAPEX affects your profitability, and your stability. The new S331L is the best value in a handheld cable and antenna analyzer period. You can get more done with minimal negative impact on your operating expenses.


1-port RF Cable and Antenna testing 2 MHz to 4 GHz such as:

  • Cellular
  • Public Safety
  • Radio and TV broadcasting
  • Aerospace and defense

Measurements include:

  • Return Loss
  • VSWR
  • Cable Loss
  • Smith Chart (50/75 ohm selectable)
  • 1-port Phase
  • Distance-to-Fault Return Loss
  • Distance-to-Fault VSWR
  • RF Power (50 MHz to 4 GHz)

The S331L is an all-inclusive instrument with a built-in InstaCal™/Power Meter module. The S331L arrives fully capable of measuring:

  • VSWR
  • Return Loss
  • Cable Loss
  • Distance-To-Fault VSWR
  • Distance-To-Fault Return Loss
  • RF Power

No options are required to perform these measurements, however a test port cable is required to complete calibration(s). Please be sure to refer to the brochure or datasheet for additional accessories such as a phase stable test port cable or hard transit case to complement your S331L.

Introducing Anritsu's 9th Generation Site Master

Introducing Anritsu's 9th Generation Site Master
Anritsu's Site Master S331L one port cable/antenna analyzer, covering the 2 MHz to 4 GHz range, comes standard with an integrated InstaCal™ module as well as an integrated power meter.

Anritsu Site Master S331L Firmware Update Method

Anritsu Site Master S331L Firmware Update Method
This video demonstrates how to quickly and easily download and install firmware for use with the Anritsu Site Master S331L.

SweepMasters Direct

SweepMasters Direct
SweepMasters DIRECT makes it even easier to use Anritsu's Site Master™ S331L Cable and Antenna Analyzer to Capture and Deliver sweep traces and reports to your clients.

Site Master S331L 2 MHz to 4 GHz Handheld Cable and Antenna Analyzer

Site Master S331L 2 MHz to 4 GHz Handheld Cable and Antenna Analyzer
Anritsu showcases the Site Master™ S331L 2 MHz to 4 GHz handheld cable and antenna analyzer at Mobile World Congress 2014.

easyTest Tools Tutorial

easyTest Tools Tutorial
This tutorial shows how easyTest Tools supports Anrtisu's spectrum analyzer measurements.