I've always wondered the same thing. I've set a pair of dual Avengers with the same phase where one was set to SignalAlert75 and the other CASignalAlert and they stayed in sync for a while so I'd be willing to bet thesr patterns are the same.there aren’t any difference between, say, standard “Signal Alert” vs “CA Signal Alert”??
I'm going to say that this nomenclature is a little bit of both in the sense that all patterns that are California compliant are labeled as such, whether they are duplicates or not. That would mean some patterns would be different when noted as California compliant and some would simply be the same pattern but noted as California compliant. The last core system I set up had more patterns and tones than I remember ever seeing before. Just for fun I used California signal alert for one vehicle and signal alert for the other. I was never able to tell a difference, but again, it could be very slight or it could just be labeling repetition for the ease of installationI've always wondered the same thing. I've set a pair of dual Avengers with the same phase where one was set to SignalAlert75 and the other CASignalAlert and they stayed in sync for a while so I'd be willing to bet thesr patterns are the same.
(a) Flash Rate. Flashing warning lamps, other than gaseous discharge lamps, shall operate at a rate of 60 to 120 flashes per minute, with a 40 to 60 percent on-time under all operating conditions. The time between the end of one flash and the beginning of the following flash for a gaseous discharge lamp shall not exceed 0.85 seconds, which corresponds to a minimum of 70 flashes per minute. Flashes having a light output less than the required minimum shall not be counted in reporting flash rate. Light pulses having a light output less than the required minimum shall not be included in the on-time.
with a 40 to 60 percent on-time under all operating conditions.