I have a solenoid that is controlled by a PLC. I want to know what the delay time is from the time the PLC sends the signal to engage the solenoid to the time the solenoid is fully engaged. The time will be very short (milliseconds), but I need to know what the delay time is to within 5ms. Is there a device that I could use to measure the delay? The solenoid draws 37A when is it moving, and the current drops to about 2A when fully engaged. I could monitor this with an oscilloscope, but those are pricey. The PLC isn't able to record time or counts either.