{"product_id":"foxboro-rh972ka-clock-synchronization-modules","title":"FOXBORO RH972KA Clock Synchronization Modules","description":"\u003cp\u003eThe \u003cstrong\u003eFoxboro RH972KA\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRH972KA\u003c\/strong\u003e Time Strobe Converter, operates as a high-precision hardware component for master clock pulse synchronization, fiber-to-electrical signal distribution, and downstream module coordination within Foxboro Distributed Control System (DCS) architectures.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRH972KA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro (Schneider Electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard Foxboro time-distribution card weight profile applies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSized for standard modular DIN rail or tray mounting configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-25 to +60 deg C (-13 to +140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C (-40 to +158 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Interface\u003c\/td\u003e\n\u003ctd\u003eMulti-mode fiber optic (MMF) via ST connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Output\u003c\/td\u003e\n\u003ctd\u003eMulti-mode fiber optic port for signal continuation loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Outputs\u003c\/td\u003e\n\u003ctd\u003e8 x RS-422 differential signal output channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Cable Distance\u003c\/td\u003e\n\u003ctd\u003e2 km (6,562 ft) max per optical input segment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Capacity\u003c\/td\u003e\n\u003ctd\u003eSupports daisy-chain or bus interconnection of up to 50 modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eClock Synchronization Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuild Design\u003c\/td\u003e\n\u003ctd\u003eRugged, industrial-grade sealed enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control System Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeterministic Synchronization Matrix Execution\u003c\/strong\u003e The module functions as a zero-latency signal arbitration link that converts incoming optical clock pulses into physical electrical waveforms. By transmitting time strobe data simultaneously across 8 isolated RS-422 differential outputs, it coordinates control processors and communication modules without introducing phase lag or scan jitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber-Optic Topology and Galvanic Noise Shielding\u003c\/strong\u003e The ST-terminated multi-mode fiber interface isolates the module electrically from the master clock source. This physical boundary eliminates high-voltage transients, radio frequency interference (RFI), and ground loops across a 2 km cable run, ensuring stable timing distribution in harsh EMI fields.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the mechanical function of the optical output port alongside the 8 electrical outputs?\u003c\/p\u003e\n\u003cp\u003eA: The optical output duplicates the incoming multi-mode fiber strobe signal for continuation. This enables system engineers to daisy-chain the timing pulse to subsequent downstream units, supporting multi-drop network architectures of up to 50 interconnected RH972KA modules.\u003c\/p\u003e\n\u003cp\u003eQ: How do the 8 differential RS-422 electrical outputs provide a benefit over standard single-ended outputs?\u003c\/p\u003e\n\u003cp\u003eA: RS-422 utilizes dual-wire differential signaling, which inherently cancels common-mode noise and voltage spikes induced along the copper transmission lines. This configuration enables long, stable distribution runs between the converter and the target DCS processors.\u003c\/p\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":45090814427251,"sku":"RH972KA","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-11_11-58-09_3c1d0e24-6a35-4886-ba1f-2c90321af32c.png?v=1781156014","url":"https:\/\/www.dcssupplier.com\/ar\/products\/foxboro-rh972ka-clock-synchronization-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}