{"product_id":"qhy-gpsbox-sync-timer","title":"QHY GPSBOX SYNC TIMER","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eQHY GPSBOX \u003c\/strong\u003eprovides high-precision GPS hardware time scales allowing QHYCCD cameras equipped with 6-pin GPS sockets to obtain \u003cstrong\u003eaccurate exposure time information\u003c\/strong\u003e.  \u003c\/p\u003e\n\u003cp\u003eThis information is returned to the camera internally and added to the image data after the start of one frame of the image. GPS timing information and image information are therefore \u003cstrong\u003ecompletely consistent\u003c\/strong\u003e.  No confusion is created due to transmission, buffering or other reasons. \u003c\/p\u003e\n\u003cp\u003eThe QHY-GPSBOX has a built-in GNSS module and can currently provide both \u003cstrong\u003epure GPS operation and GPS\/Beidou dual-mode operation\u003c\/strong\u003e. The GPSBOX also contains a local 10MHz voltage controlled crystal oscillator (VCXO) that provides an \u003cstrong\u003einternal 0.1us resolution timing clock\u003c\/strong\u003e. At the same time, the timing clock is reset by the PPS model of the GNSS module. Therefore, the clock and the GNSS system’s second start time are strictly aligned, and the error is within a range of 20ns to 100ns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: \u003c\/strong\u003ewhen choosing a QHY camera, you must specify the special version with the 6-pin GPS socket. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/QHY_GPSBOX_5_1000.jpg?v=1794269500\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen the camera is working, an electronic shutter measurement waveform is generated every frame. The waveform is output to the GPSBOX. After the GPSBOX performs high-precision time measurement, it outputs a serial header data and sends it back to the camera. The camera records these data after the frame header of each frame (replacing some pixel values in the first few lines).\u003c\/p\u003e\n\u003cp\u003eThe QHY GPSBOX has a perfect fault tolerance mechanism. For example, if the PPS signal is lost, after 50.0us an internal second step will be recorded. For timing information without a PPS signal, a cumulative timing error of 50us per second will be generated. When the PPS signal is restored, the PPS signal will be used again to reset the internal timer. Therefore, it has GPS timing accuracy after recovery and will not accumulate previous errors.\u003c\/p\u003e\n\u003cp\u003eThe QHYGPS will also output a GPS measurement value of an internal 10MHz clock every second, which can be used to accurately calibrate the frequency of the internal 10MHz crystal oscillator later in software to avoid an internal 10MHz crystal oscillator error and temperature drift.\u003c\/p\u003e\n\u003cp\u003eCurrently ONLY the following models have 6-pin aviation plug which supports GPSBOX (without further modification):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQHY600 Pro\u003c\/li\u003e\n\u003cli\u003eQHY268Pro\u003c\/li\u003e\n\u003cli\u003eQHY4040\u003c\/li\u003e\n\u003cli\u003eQHY4040Pro\u003c\/li\u003e\n\u003cli\u003eQHY6060\u003c\/li\u003e\n\u003cli\u003eQHY42Pro\u003c\/li\u003e\n\u003cli\u003eQHY411\u003c\/li\u003e\n\u003cli\u003eQHY461\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOther models don’t natively have a 6-pin plug but can be modified to be compatible with the QHY-GPSBOX. Please contact us for more info.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Testar Australia","offers":[{"title":"Default Title","offer_id":51404527829217,"sku":"QHY-GPS-BOX","price":499.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/QHY_GPSBOX_2_1000.jpg?v=1794268596","url":"https:\/\/www.testar.com.au\/products\/qhy-gpsbox-sync-timer","provider":"Testar Australia","version":"1.0","type":"link"}