[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-664571-105":59,"doc-detail-664571-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","bulova-accutron-quartz-series-245-technical-bulletin-specifications","Bulova Accutron Quartz Series 245 - Technical Bulletin - Specifications","","Bulova Accutron Quartz Series 245 technical bulletin detailing the electronic timekeeping mechanism, quartz frequency generation, and conversion of the 32,768 Hz signal into one-second pulses for a bipolar stepping motor. It explains the ACCUSET feature operation, including how the push button resets the second hand to the time standard, maximum correction limits, and the role of independent counter control logic. It also covers crown positions, disconnect behavior to conserve battery life, and power cell replacement and re-synchronization requirements after servicing or current interruption.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/bulova-accutron-quartz-series-245-technical-bulletin-specifications/664571/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/bulova-accutron-quartz-series-245-technical-bulletin-specifications/664571.png","ImageObject",300,407,{"name":92,"@type":93},"Riley","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What happens when the crown is pulled out to Position 3?","Question",{"text":112,"@type":113},"The motor and all hands stop, while the quartz resonator continues to vibrate. This preserves ACCUSET circuit synchronization and helps conserve the battery life.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the ACCUSET feature correct the time?",{"text":117,"@type":113},"Depress the ACCUSET push button and release it at the correct moment when the time standard reaches the 60th second marker. The sweep second hand stops temporarily if fast or accelerates if slow until it synchronizes, with a maximum correction of ±30 seconds.",{"name":119,"@type":110,"acceptedAnswer":120},"Why and how is ACCUSET re-synchronized?",{"text":121,"@type":113},"Re-synchronization is necessary after installing a power cell, servicing the movement, or interrupting current (e.g., loose contact screw). The instructions reset the ACCUSET circuit by pulling the crown to Position 3 when the sweep second hand reaches the 60th second mark and pressing/releasing the ACCUSET button.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},664571,1793259495,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":39,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":46},1374391975076,"https://ap-avatar.wpscdn.com/avatar/14000253ca4ec9f6853?x-image-process=image/resize,m_fixed,w_180,h_180&k=1783305029341752051","DIAL SIDETRAIN BRIDGE SIDE(Indicators Removed)(Magnetic Shield Removed)CALIBER NO.Fig.1.ENLARGED VIEW OF MOVEMENT OF CALIBER 245  \nFig.2.CALIBER 246 WITH MAGNETIC SHIELD.  \nBULOVA°ACCUTRON°QUARTZSMQ Series 245&246TECHNICAL BULLETIN  \nAll information contained in this booklet and referring to Series 245 includes ser.246,unless otherwise noted.  \nCALIBERDISPLAY2451.10Hour,Minute,&Second2452.10Hour,Minute,Second &Date2453.10Hour,Minute,Second,Date&Day2461.10Hour,Minute &Second2462.10Hour,Minute,Second &Date  \nBulova Accutron Quartz Series 245—Electronicmovement with quartz resonator,stepping motor,disconnect system,and Accuset.®  \n# SPECIFICATIONS\n\nQuartz Frequency  \nStepping MotorBipolar,2 steps per revolution  \nPower Cell  \nOne Silver Oxide Battery,1.55 Volt Bulova 247(Low Drain)  \nPower Consumption  \nMax.2.5 Microamperes(Normal Running)Max.0.5 Microamperes (Disconnect Position 3)  \n# Disconnect System\n\nWhen the stem is pulled out as far as it willgo(Position 3),the motor and hands stop.The Reso-nator(Quartz)continues to vibrate,without affectingthe synchronization of the electronic ACCUSET cir-cuit,while preserving the life of the battery.  \n# Accuset\n\nA device that corrects the second hand by merelydepressing a push button.The second hand is resetautomatically to the time standard.  \nDay Indicator  \nIn two languages:English and Spanish,or Englishand French.  \n32,768 Hz(Cycles per second)Electronic Circuit  \nC-MOS Integrated Circuit—one second signalincrements  \nHEIGHTDIAMETERLIGNE  \n4.20 mm26.0 mm1112  \n5.05 mm26.0 mm111/2  \n5.05 mm26.0 mm111/2  \n4.20 mm20.5 mm83/4  \n4.70 mm20.5 mm83/4  \n# BASIC ELECTRONIC FUNCTION OFACCUTRON QUARTZ SERIES 245\n\nRefer to Fig.3  \nThe Accutron Quartz Series 245 is powered by a  \n1.55 volt Bulova 247 (Low Drain)battery.Voltage fromthe battery is introduced into the electronic circuit,which then transmits current to the Quartz Crystalcircuit causing the crystal to vibrate at 32,768 Hz(cycles per second).The accuracy of the watch is de-pendent on the frequency of the Quartz Crystal.Ifthe Quartz frequency is incorrect,the TRIMMER ca-pacitor regulator,within the movement,can be turnedto make adjustments of up to 8 seconds per day.  \nThis Quartz frequency (rate)must be then convert-ed to one-second impulses before it can be used tomechanically drive the hands of the watch.This isaccomplished by means of an electronic divider cir-cuit.The divider circuit,which contains 15 stages,re-ceives the signal generated by the Quartz Crystaland divides this signal by two in each of the 15stages.  \nThe 15th stage emits one pulse per second.Thedivider circuit divides the 32,768 Hz to 1Hz(2¹⁵=  \n32,768),which drives the stepping motor in the time-keeping mode.The motor in turn drives the gear trainwhich is connected to the dial train causing thehands to turn.  \n# ACCUSET®OPERATION\n\nIn addition to the 15 stage divider,and othercircuits,there are also two independent counterACCUSET control logic circuits.These logic circuitsperform the resetting function for the ACCUSET fea-ture.Both are set to zero when the crown is in posi-tion 3(Fig.4)and the ACCUSET button is pushedand released.When the stem is pushed in (Position1 or 2)both circuits start to count continuously,onecount per second up to 60,and then start over again.  \n## USING THE ACCUSET CORRECTOR\n\nOnce the ACCUSET feature has been programmed(Page 3)and after a period of time,if the watch is nolonger accurate to the exact second,press and re-lease the ACCUSET button the instant the time stand-ard used reaches the 60th second(12 o'clock)mark-er.(Maximum correction is +or-30 seconds.)Thesweep second hand of the watch will temporarilystop if it is fast,or accelerate if it is slow until it isin synchronization with the time standard.  \nImportant:When the crown is \"all the way out\"(Position 3),motor and all hands stop.The ACCUSETcircuit continues to operate and the quartz crystalcontinues to vibrate,using extremely little current.Store watches with crown in\"out\"(Posit","cbCaiquAUxeye6l9","https://ap.wps.com/l/cbCaiquAUxeye6l9","pdf",7246362,"English","# Specifications\n## Disconnect System\n## Accuset\n## Basic Electronic Function of Accutron Quartz Series 245\n## Accuset® Operation\n## Using the Accuset Corrector\n## Replacing the Power Cell\n## Setting Instructions and Programming Electronic Accuset Circuit\n## Setting Instructions","[{\"question\":\"What happens when the crown is pulled out to Position 3?\",\"answer\":\"The motor and all hands stop, while the quartz resonator continues to vibrate. This preserves ACCUSET circuit synchronization and helps conserve the battery life.\"},{\"question\":\"How does the ACCUSET feature correct the time?\",\"answer\":\"Depress the ACCUSET push button and release it at the correct moment when the time standard reaches the 60th second marker. The sweep second hand stops temporarily if fast or accelerates if slow until it synchronizes, with a maximum correction of ±30 seconds.\"},{\"question\":\"Why and how is ACCUSET re-synchronized?\",\"answer\":\"Re-synchronization is necessary after installing a power cell, servicing the movement, or interrupting current (e.g., loose contact screw). The instructions reset the ACCUSET circuit by pulling the crown to Position 3 when the sweep second hand reaches the 60th second mark and pressing/releasing the ACCUSET button.\"}]","Bulova Accutron Quartz Series 245 - Technical Bulletin - Specifications | PDF"]