Precision GPS Timing and Power Measurement Solutions
Timing & Frequency
GPS controlled Precision Time Clocks and Frequency Standard/Comparator - Advanced and Economic models to match your requirements
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.
Handheld Power System Multimeter
Model 928A packs critical functionality in a small, easy to use package for power engineers in the field. Measures power and energy, flicker, harmonics, phase angle, with a waveform display.
Assembled Test Leads
Standard and custom test leads to meet any connectivity challenge. Choice of wire type, shielding, lengths and connectors allow for hundreds of combinations.
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 »
September 25, 2025 Model 1201 Document Update
Name : Model 1201B/C Quick Setup Guide
Version : G
Released : 25 September 2025 more info »
September 25, 2025 Model 1200 Document Update
Name : Model 1200B Quick Setup Guide
Version : D
Released : 25 September 2025 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 »
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 »
December 22, 2025 NIST contemplated pulling the pin on NTP servers after blackout caused atomic clock drift
Time signals shifted by a tiny amount that only very sensitive users would find upsetting more info »
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Specifying Holdover Performance
• What happens when GNSS clocks lose lock?
• What does holdover mean?
• Why is it difficult to compare holdover claims between manufacturers?
• Why do we specify holdover over a complete range of environmental parameters?
• What makes us confident in our claims? We hold two patents
(US 9 362 926 and US 9 979 406) for ‘High-Reliability Holdover Method and Topologies’ which offer several improvements to previous state of the art.