S331E – Anritsu

The Site Master S331E is a Compact Handheld Cable and Antenna Analyzer created by Anritsu. The S331E has an operating temperature of -10 to 55 degrees C and a dual display capability.

Product Description

Item #: S331E
Manufacturer: Anritsu
Series: Site Master

S331E by Anritsu is a Compact Handheld Cable and Antenna Analyzer  in the Site Master series. S331E features a Battery Life of 4.5 hours and a Weight of 6.0 lbs.

The Anritsu Site Master S331E Compact Handheld Cable and Antenna Analyzer decreases site maintenance costs, increases system up-time, and discovers issues before catastrophic errors happen. The S331E Site Master is used by radio frequency (RF) engineers and field technicians in the U.S. Navy, U.S. Air Force, and various other global defense programs accountable for maintaining and installing communication systems. The broad operating temperature range of this model is -10 to 55 degrees C, ensuring that it will continue to work even in extreme weather environments. It has a durable case and splash proof design to withstand use in the field.

The Anritsu S331E has a quick name matrix function, which allows the user to preset as many as 42 standard names. This function stores long file names with factors such as: cell site ID, color coding, sector information, frequency, measurement type, and termination in around five seconds. Every trace in a site can now be named in minutes, instead of wasting hour on this task. Another great feature of this model is the standard Open-Short-Load (OSL) calibration. It comes standard with the S331E, along with the other Site Masters. Each mistake from directivity, source match, and frequency response are calculatedly deleted, enabling the user to perform precise vector-corrected measurements. Directivity tends to be the major cause of measurement uncertainty; accurate directivity of 42 dB or more is standard with precision components.

The S331E Site Master has a dual display capability, which allows the user to look at two antenna and cable measurements on the same display. The top and bottom displays can be controlled individually, so markers and limit lines can be set on both displays. This ensures time will be saved because two measurements do not have to be performed.


Frequency Range 2 MHz to 4 GHz
Sweep Time 50 µs to 50 ms
Display 8.4 in. daylight viewable
Battery Life 4.5 hours
Weight 6.0 lbs.
RF Connector N female
Dimensions 10.7 x 7.8 x 3.6 in.
Option 10 Variable Voltage Bias Tee
Option 21 2-port Transmission Measurement
Option 31  GPS Built-in Receiver (needs Antenna P/N 2000-1528-R, not included)
Option 19 High Accuracy Power Meter (Needs USB Power Sensor)
Option 413  Ethernet Connectivity
Option 752 CPRI LTE RF Software (needs option 759)
Option 753 OBSAI LTE RF Software (needs option 759)
Option 759  RF Over Fiber Hardware (Must be ordered with option 752 or 753)
Option 98  Standard Calibration to Z540
Option 99  Premium Calibration to Z540 plus test data