MASTER CLOCK (GNSS Synchronization) QC-5500 Series
SEIKO QC-5500 Series is a high-precision quartz master clock equipped with a wide variety of functions that meet the needs of the users, such as synchronization output via RS-422 and daylight savin
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บริษัท แลนเด็กซ์ พรีซิชั่น จำกัด เป็นผู้นำเข้า ผู้แทนจำหน่าย นาฬิกาภายนอกอาคารสำเร็จรูป ยี่ห้อ Seiko และจัดจำหน่ายนาฬิกา, เครื่องนาฬิกา, นาฬิกาแขวน, นาฬิกาปลุก, นาฬิกาตั้งโต๊ะ, อุปกรณ์-อะไหล่นาฬิกา, เครื่องใช้สำนักงาน, เครื่องใช้ภายในบ้าน, อุปกรณ์คอมพิวเตอร์ และของใช้ต่าง ๆ อีกหลากหลายยี่่ห้อ เช่น Seiko, Twemco, Wellgain, iamclock, jpoint, Rhythm etc. Founded: 26th December 1989 Industrialist Name: Mr. Ittipat Jor Jitcharoenchai, General Manager Industrialist Experience: 20 years for clock movement and parts trading experience. 4 years for MDF wooden production and trading experience. 11 years for trading and sourcing many material and products experience. Such as home decorative items, metal stationary, wooden hand craft product, electronic product etc. 5 years for system clock and outdoor clock system 12 years to be official distributor of SKP (Seiko) clock movement in Thailand 5 Years to be official distributor of Seiko time system (Japan) in Thailand 8 Years to be official distributor of Twemco Industrials Limited Company Establish Date: 26 December 1989 (26 ธันวาคม พ.ศ. 2532) Registered Capital: 2,000,000 baht Number of Personnel: 8 Address: 5 Rajburana Rd., Bangpakok, Rajburana, Bangkok 10140 Thailand Telephone Number: (662) 427-5314 Fax Number: (662) 336-0521 Mobile Phone: (6684) 542-5449 E-mail Address: landex@gmail.com Web site: http://www.landexshop.com , http://www.iamclock.com Products And Services: - Clock Movement and parts from many company in Japan, Hong Kong, Taiwan and China such as SKP, Rhythm, takene, Wellgain , Young Town etc. - Competed clock from Seiko, Rhythm, Twemco, Wellington and other companies - Outdoor clock, indoor big clock and system clock for big project from Seiko System clock from Japan and Twemco from Hong Kong - Usb flash drive and other related electronic product - Home decorative items Share Nationality : Thai 100% Associations : Importer, Exporter , Distributer, Sole Agent, Consultant in premium product and Sourcing service Company in Cooperation (Suppliers and Customers) for example: -Wellgain Precision Products (Thailand) Co., Ltd. -Wellgain Group -Twemco Time System Ltd. -Seiko Precision (Hong Kong) Ltd. -Index Living Mall Co., Ltd. -Technology Store co., Ltd. -A and A Group Ltd. -VP Group. - KP square limited partnership -Oriental Pewter (Thailand) Co., Ltd. -Silpfa Plastic Industry Co., Ltd. -Extra form manufacturing -Nam Ngai Hong Industry Co., Ltd. -Tetra Pak (Thai) Ltd. -Union Commercial Co., Ltd. -Spar Mechatronics Co., Ltd. -Wall of Frame -KC&L Industry Co., Ltd. -Aanonsen Jernvarer As -Patthara Asia Publishing Co., Ltd. -The mall Group Co., Ltd. -Central Retail Corporation Ltd. -Robinson Department Store Public Company Limited -Gumption Design Co., Ltd. -We Why Brand Co., Ltd. -Scale-Concept Living Co., LTd. -Gobobble -HIFI International Co., Ltd. -North Territory Co., Ltd. -Thai Industrial Gases Plc. -The Jim Thompson Art Center -Japan Foundation , Bangkok -Mastermind Advertising Co., Ltd. -Mixen Corporation co., Ltd. -Chao Phaya Insurance Public Company Limited -Iron and Steel Institute of Thailand -The RBSC Polo Club -Oishi Group Public Company Limited -Kasemkij Co., Ltd. -Sombatchai Plastic Industry Ltd. -SCG Network Management Co., Ltd. -Marigot Jewellery (Thailand) Co., Ltd. -Jay Mart Public Company Limited - Siam Cement marketing - Propagandist - Thanacity Golf and sport club - Fuji restaurant - Oishi group of company - Summit Cugoku Seira Co., Ltd. - GRP Hitech (1999) Co., Ltd. - Ajinomoto - PTT Chemical Public Company Limited - Siam Samsung Insurance - B.P.C Ceramics Co., Ltd. -Epson Precision Thailand -Central Restaurant Group - Dunlop Adhesive (Thailand) Co. ,Ltd. -Ichiton Group - Kempin Siam Co., Ltd. - test
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QC-55101/55102
QC-55201/55202
QC-55301/55302
*GNS-300 is available separately
SEIKO QC-5500 Series is a high-precision quartz master clock
equipped with a wide variety of functions that meet the needs of
the users, such as synchronization output via RS-422 and daylight
saving time setting. Models operating on AC 110 V (QC-55X01) and
AC 220 V (QC-55X02) are available.
By connecting the GNSS Receiver (GNS-300) for exclusive use with
QC-5500 Series, the internal clock can be adjusted automatically
on a regular basis.
How to Drive Secondary Clocks
Accuracy and Synchronization of Secondary Clocks
The role of the secondary clock in a time-keeping system is to accurately reproduce the
time signal supplied by the master clock. The master clock and secondary clocks are
connected electrically , and the Crystal oscillator frequency of 32.768kHz or 4.194304
MHz/sec. from the master clock is reduced in several stages by the frequency diving LSI
and finally transmitted to the secondary clock as a 1-sec. or a 30-sec. polarized signal of
±24V DC. The secondary clock converts this electrical signal into mechanical energy and,
with the same precision as the master clock, simultaneously displays the correct time.
(1) Master clock function (QC-5510X, QC-5520X and QC-5530X)
Up to 30 secondary clocks can be connected to each channel
(if the current consumption of each secondary clock is 12mA).
(2) External synchronization function
By connecting with an external master clock generating 30-sec
polarized signal output, the loss/gain of the clock is corrected
automatically.
(3) Time correction function
By connecting with the GNSS Receiver (GNS-300), the time
correction is made automatically.
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