Arbiter Systems^®, Inc.

Precision GPS Timing and Power Measurement Solutions

High Precision GPS Clock for Substation Applications

The popular Model 1094B brings reliability, precision, convenience and common connectivity options to the substation.

Portable Power Measurement with Precision Timing

Model 933A Portable Power Sentinel takes field analysis to the next level, packing ultimate power metering with optional precision timing for rmeasuring time and phasors.

Power Measurement and Calibration

Advanced Power Measurement and Calibration units with the power for the toughest jobs, and the portability required by professional power engineers in the field.

Model 811AT Universal Test Plug Current Lead Set

As a set or individual single-phase current lead, Model 811 test leads feature industry compatible Universal Test Plugs and gold plated 0.25 in spade lugs for maximum quality.

Timing & Frequency view all products » Synchronized Power Measurements view all products » Power Measurement and Calibration view all products » Assembled Test Leads view all products »

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May 29, 2026
Model 1201 Firmware Update
Name : 1200-1201_Firmware
Version : 01.24 Rev 16Sep2024
Released : 16 September 2024
more info »

November 11, 2025
Motorola/iLotus 12 Channel Receiver Maintenance Advisory
Maintenance requirement for all Motorola/iLotus M12M GPS receivers.
more info »

April 15, 2021
Presentation: Time in the Power Industry: How and Why We Use It
Arbiter Systems engineer Bill Dickerson delivers a talk to the IEEE North Jersey section on the use of precision timing in the power industry.
Topics covered include:
-Applications of precise time
-Accuracy requirements
-Time scales, time zones etc
-Sources of precise time
-Methods of timing distribution
-Problems sometimes encountered and how to avoid them
more info »

October 5, 2026
The Pentagon wants ultra-precise clocks without GPS
The Pentagon's research arm has been experimenting with a new generation of ultra-precise clocks, with the hope of one day integrating the devices into military aircraft, radars, and other systems as a reliable backup for American forces when GPS is jammed or spoofed.

more info »

May 26, 2026
NextEra Will Buy Dominion Energy
Florida-headquartered NextEra Energy is set to buy Virginia-based Dominion Energy in an all-stock deal valued at about $67 billion.
more info »

March 27, 2026
Anatomy of a Blackout: Findings from the Spain-Portugal Grid Collapse Final Report
An analysis of the European Network of Transmission System Operators for Electricity (ENTSO-E) Expert Panel’s final report on the April 28, 2025, Iberian Peninsula power grid incident.
more info »