Knowledge center
The hard part of a measurement is rarely operating the instrument. It is knowing what to measure, why to measure it that way, and whether the number you get can be trusted. These are the fundamentals, technical articles and application guides we have written down. If you are working out whether a function or an approach fits your case, start here.
Written by the Evencat engineering team. Where we cite third-party technical papers, the original author is named and the source is linked.
Fundamentals
“What is …?” Plain introductions to measurement concepts, assuming no background in the field.
Time Interval and Jitter Measurement: TIE, Period Jitter and the Resolution Floor
Jitter is a clock edge that does not arrive at the instant it should. To measure it, first understand how a counter measures time
Why Every Ballistic Solver Agrees and Still Misses
Every ballistics program returns the same answer. So why does none of them match your target paper?
Back to Basics: Think About Trajectory in Time, Not Distance
Give a 105 mm tank round and a .22 bullet the same 4 second flight and both peak about 20 meters high.
Technical Articles
Deeper technical pieces: the principle, its limits, and why some methods read wrong.
Long Range Accuracy Starts With Measured Time of Flight
Why the key to long range prediction is measuring time of flight, not picking a drag function.
The Missing Link: Where Does Your Ballistic Coefficient Come From?
Every ballistics program asks you for muzzle velocity and a ballistic coefficient. None of them tells you where to get either one.
When Neither G1 Nor G7 Fits: Extended Drag Functions
Stitch the velocity bands together with measured time of flight, so an ordinary solver can still reach long range
Application Guides
How it is actually done: the measurement procedure, the settings that matter, what to watch for on site.
Extended Range Truing: Calibrating a Trajectory With Measured Time of Flight
Stop guessing the ballistic coefficient. Make the solved curve pass through the point you actually shot.
Laboratory Time and Frequency References: GNSS-disciplined Rubidium and Standalone Sources
One 10 MHz and one 1 pps make every instrument in the laboratory tell the same time, and here is what to do when there is no satellite signal
Extended Range Truing: Why Measured Data Beats a Better Drag Function
Neither G1 nor G7 is your bullet. Instead of picking a drag function, measure the real numbers and true the solution back to them.
Selection Guides
Which instrument for this job? Specification trade-offs and model comparisons.
Frequency Counter Selection Guide: Resolution, Channels and Time Base
Digits/s, single-shot resolution, channel count, microwave input and time base: five specifications that decide which counter you need
Igniter Testing and Intrinsically Safe Ohmmeter Selection Guide
Why an ordinary multimeter must not measure the resistance of an igniter, a squib or an exploding bridgewire, and which instrument to use instead
FAQ
The questions customers ask most about a function or an application, one answer each.
Once you know the method, which instrument does the job?