Dating early pantograph
All inputs incorporate suitable EMI protection, and all internal electronic assemblies are enclosed in a dual Faraday cage.Typical DPM dimensions are 240 x 175 x 40 mm with a mass of 3kg (including batteries).
If you find an error, let me know, and I'll correct it.
The DPM is programmed to execute a daily download of all stored events to the RSRU.
This data is used to indicate where impacts have occurred, and allows long-term trending of faults developing in particular areas.
The 100 highest events are stored in the time domain, sampled at 330 Hz for a duration of 6 seconds (including 2 seconds before the event), along with an event ID, maximum detected value, and GPS-provided time, date, speed and accurate location data.
The lowest event is overwritten as and when subsequent higher events are recorded.
Modern high speed rail vehicles can suffer from damage to the contact strip when the dynamic interaction results in excessive impacts.