Yes, it is possible. This can be done if a test cable or other test fixture connects both ends of the product cable to a single adapter. All test points on the tester are addressed individually, so loop backs or other connections between points on a single adapter will be identified and tested just like connections between two separate adapters. Please contact Cirris if you need a more detailed explanation.

Great Question! The 4250 can perform high voltage isolation (Insulation Resistance - IR) testing at up to 1500 VDC. The 4200, however, is a low voltage tester so it is not able to, as it only performs low voltage isolation testing. You can read more about the specs on our handy product page cirris.com/product/4250/#product-specs

Hello, if you don't have Export Filename it's most likely due to the version of software that is being used. We would recommend ensuring your software installs are on the current version. If that still doesn't allow for the option, or if you need help updating your software, feel free to contact us directly at [email protected] or [email protected]

Thank you @armingeorg! We're glad you enjoyed it

Hi, thanks for your question. A good place to learn more about the resistance settings (Connection Resistance, LV Insulation Resistance, and HV Insulation Resistance) for this tester is in the Easy-Wire Software Manual for the Easy-Touch Pro. (See pages 23 through 25) You can download the latest copy of this manual at downloads.cirris.com

Great question @morbotheturtle3796, the short answer is that presently the Operator Input functionality is only designed to prompt the operator at the beginning of the test. You can of course display custom messages to the operator throughout the test with the Comment Test Instruction. I might mention also that the Cirris CH2 and 8100 testers allow an Advanced Test Instruction called "Comment Response," which can be used at any point during the test process to record operator inputs.

I believe the ftp site is not being supported any longer, though it has been in the documentation. Scripts are helpful for gathering certain types of information from reports, and in some cases providing some report customization. Often the best approach is to call Cirris with the report need and see if they can help or send you a sample script that is close.

Thanks!!

Yes. In the near future we will be doing a video about the benefits of automated testing and how are testers compare with meggers.

That's great Vid 🙏

Cirris testers use a 'scanning' method for testing discontinuity - that is they will look at one connection at a time and scan through all such connections one after the other. Thus how often each connection is monitored is determined by how many connections are in the device being tested. The larger the device, the longer the time between monitoring any specific connection. Currently our equipment does not have the capability to scan at 1 uS, even with a small device. For smaller devices the time is closer to 1 mS. However, looking at the referenced specification it states "A discontinuity is defined as a series loop resistance of 10 ohms or greater lasting for one microsecond or longer,". The tester can find discontinuities lasting longer than 1 uS, but it is possible to miss discontinuities lasting longer then 1 uS but shorter than the fastest scan rate of the test .

Thank you for your comment. We received the form you filled out on our website. Someone from Cirris will be contacting you to help you find a solution.

I believe Paschen's Law applies only to very specific conditions. For example, one condition is that voltage is applied to parallel plates, in which the distribution of electrons (or holes) will be uniform across its surfaces. But in the real world, the geometry of the opposing electrodes is rarely parallel plates. For example, in general the breakdown voltage between two sharp pointy electrodes is much less than between plates, because the point tends to concentrate the available electrons. There are other conditions that are also not generally met in real situations. And if you acknowledge that the 9V batteries can sustain an arc (because sustain requires only lower voltage)... how did that arc start?

@@Graham_Wideman The video is for illustrative purposes only. Different cables have different builds with all kinds of variables. DWV tests are affected by humidity, dielectric absorption, geometry of the metals in proximity, environment (vacuum, air, etc), and more. Our testers are designed for a particular case where wires or pins (typically adjacent) cause undesired arcs because of poor insulation, contamination, or physical damage in general.

@@Graham_Wideman When a conductor carrying current (like a switch contact or battery terminal) is separated, there is a transient state between "closed" and "open" in which current flows through a microscopically thin section of material. That section can get very hot, even ignite and ionize the air, starting an arc that is sometimes called a "load arc." If you're shorting out a 9V battery to another 9V battery you will see that it sparks only when the connection is broken and not when the batteries are brought together (although there is some bounce that makes it seem that way in some trials, you'll definitely see it's visible mostly on breaking the connection). Adding any length of wire to the 9V also adds a non-trivial amount of inductance that will make it easier to spark, especially if the wires are separated by some distance. If you're using a battery to power a motor, you'll see an even bigger and brighter spark from the inductance of the motor raising the voltage well above 327V. I think Paschen's Law is OK only if you strictly consider the process of starting the arc and rule out any other physical phenomena that might get one started by means other than dielectric breakdown. Relays for motors and other heavy loads are designed differently for this reason. For an extreme example, check out some of the videos on YT showing power transmission stations disconnecting under load.

@@stickyfox hmm, not sure what you mean about shorting two 9v batteries together. You mean in parallel? Because there would be no voltage differences across which to spark. Or you mean in series? In which case this is just an 18v battery which you are shorting, and I'm not sure what's special about that voltage.

@@Graham_Wideman Well, 9V batteries *are* special in that you can easily short them out. It's much harder with a AA, plus the spark is bigger! And yes, when you touch two nodes of the same voltage there's no spark.