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.
Portable Combustible Gas Meter for Transformer Analysis
Measure total combustible gases in oil-filled transformer nitrogen gas blankets with Model 921A.
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.
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 »
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 »
December 3, 2025 Indian government reveals GPS spoofing at eight major airports
India’s Civil Aviation Minister has revealed that local authorities have detected GPS spoofing and jamming at eight major airports. more info »
November 3, 2025 The race to shore up Europe’s power grids against cyberattacks and sabotage
Cyberattacks, series' of complex cascading failures, agin IT infrastructure. What is the path going forward besides pointing fingers at each other? more info »
Quick Model Search
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.