Dating early pantograph
The rest of the images are from a different copy of the catalog which is believed to be a printers proof copy, as there is a faint penciled in "3/12" on the inside front cover, and a correction (in pencil) to page97. This is the first of a number of brochures with rather strange form factors.Multiple fonts were used, possibly by accident, as this had to be folded in an odd fashion, and the normal [presumed] borders at the edges are missing. Typewritten notes about the 3-D pantographs of the time (3-B and 3-L) Since they are not in brochure form, they presumably are copies of the content which went into a later brochure about the 3-D machines.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.The machine brochures are organized by type - click on an image to get more detail) and then chronologically within the type.They are also organized by date of publication below.The DPM is programmed to execute a daily download of all stored events to the RSRU.
The receiver can automatically alert designated personnel of severe impact events via TMS or GSM network, and can output signals to other on board systems (for driver notification if required).The system consists of an acquisition and Data Processing Module (DPM) installed on the live pantograph frame, which continuously monitors the acceleration at the pantograph head and detects when transient signals exceed user- defined limits.Upon detection, the event is recorded at 330 Hz and the module communicates information wirelessly to a carriage mounted receiver module.Additionally, the RSRU can notify the driver, to provide instant visual notification of high alarm events.Investigation of the overhead line at the identified location can be conducted, and maintenance carried out to rectify any issues before further overhead line degradation results in damage to the pantograph, or causing de-wirement.