{"id":642,"date":"2016-10-19T19:28:25","date_gmt":"2016-10-19T11:28:25","guid":{"rendered":"http:\/\/localhost\/?page_id=642"},"modified":"2017-01-03T20:25:18","modified_gmt":"2017-01-03T12:25:18","slug":"masterslave-clock","status":"publish","type":"page","link":"https:\/\/www.chilin98.com.tw\/?page_id=642","title":{"rendered":"Master\/Slave Clock"},"content":{"rendered":"
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Wired and ZigBee Wireless master\/slave clock<\/span><\/strong><\/h2>\n<\/div>\n<\/div><\/div><\/div><\/div>
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1.) Introduction:<\/strong><\/h3>\n

Basically, the master clock take signal from GPS or NTP (via internet) and send time\/date data to all slave clock wired or wirelessly.<\/strong><\/p>\n

a). The advanced ZigBee wireless transmission technology is ideal to be implemented into the wireless master\/slave clock system. It transmits low power but longer distance transmission.<\/strong><\/p>\n

b). Master clock broadcast time\/date information to all clock every second. The transmitting power from master clock is only around 0.06W at frequency 2.450~2.480Ghz which worldwide approval frequency.<\/strong><\/p>\n

c). Each slave clock acts as a repeater. Max. repeat times is 19, average transmission range is about 100 meters. LOS range will be 500 meters.<\/strong><\/p>\n

d). The slave clock colon will stay lit up when it get synchronized. If more than 10 minute no data received from wireless module, the slave clock will run base on its time base (crystal) and flashing the colon.<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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2). System diagram<\/strong><\/h3>\n<\/div>\n<\/div><\/div><\/div><\/div>

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SC: Slave Clock acts as repeater for signal transmission from master clock.<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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3). MASTER CLOCK<\/strong><\/h3>\n

\u00a0<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Model:SDC-OC3B<\/strong><\/p>\n

19\u201d Rack mount available. Ivory metal case, 435mm(W)x295mm(D)x45mm(H),<\/strong><\/p>\n

wall mount (option)<\/strong><\/p>\n

I\/P power: AC Adaptor from 100~240VAC to 19VDC\/3A (UL\/CSA, CE approved) or directly from AC24V\/2A.<\/strong><\/p>\n

Time base: (1). GPS receiver, (2) NTP Ethernet card required, (3) Internal crystal<\/strong><\/p>\n

A visual synchronization status indicator for GPS receiver<\/strong><\/p>\n

O\/P : \u00a0\u00a0\u00a0<\/strong><\/p>\n

(1) 4 x RS422 ports---------- to wired RS422 clocks or equipment<\/strong><\/p>\n

(2) \u201cRESET\u201d + \u201cCLOCK\u201d pulses to wired secondary digital clock<\/strong>(24D20A, 24D40A, 24CC10) and Analog clock (24SC12R-SPL,<\/strong>24SC15RSPL) can be synchronized.<\/strong><\/p>\n

(3) Wireless RF signal to all wireless clocks (Antenna 480mm)<\/strong><\/p>\n

(4) 4 x Relay dry contact O\/P (NC, C, NO), 5A, Programmable timer for\u00a0 bell O\/P or lamp on\/off control<\/strong><\/p>\n

(5) Music O\/P for school, church, max 7 music (max. length 30 seconds) can be stored. (user may provide *.wav for their preference).<\/strong><\/p>\n

Time Zone & DST adjustment : equipped.<\/strong><\/p>\n

For Ethernet card equipped master clock, all the setting can be done on web base.<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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4). GPS Receiver<\/strong><\/h3>\n<\/div>\n<\/div><\/div><\/div><\/div>
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MR-350 GPS Receiver <\/strong><\/h3>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Extension cable \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Mounting hardware<\/strong><\/h3>\n<\/div>\n<\/div><\/div><\/div><\/div>
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Features<\/strong><\/h3>\n

MR350 GPS receiver is designed with 100% water proof\uff0cutilizing SiRF star\u2162 IC chip. Suitable for varies outdoor activity use. Its features shows below:<\/strong><\/p>\n

1.SiRF Star III high efficacy GPS IC chips<\/strong>
2. High Sensitivity<\/strong><\/p>\n

3. Fast response<\/strong>
4. Support \u00a0NMEA0183 communication protocol<\/strong>
5. Internal memory equipped for data storage<\/strong>
6. Built-in ceramic antenna<\/strong>
7.RS232 interface<\/strong>
8.100% water proof<\/strong>
9. suitable for timing, location retrvie<\/strong>
10. WAAS ENGOS is supported.<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Specifications<\/strong><\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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IC chips\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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SiRF Star III<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Frequency\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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L1, 1575.42 MHz<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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C\/A code\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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1.023 MHz chip rate<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Channels\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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20<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Sensitivity\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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-159 dBm<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Accuracy:<\/span><\/strong><\/p>\n<\/td>\n

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\u00a0<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Position\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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10 meters, 2D RMS<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Speed\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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0.1 m\/s<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Time difference\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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1uS<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Position data:<\/span><\/strong><\/p>\n<\/td>\n

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default WGS-84<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Reception time:<\/span><\/strong><\/p>\n<\/td>\n

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\u00a0<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Receiver\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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Ave. 0.1 sec<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Hot start up\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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Ave. 8 sec<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Warm start up\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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Ave 38 sec<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Cold start up\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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Ave. 42sec<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Altitude\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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18,000 meters<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Speed<\/span><\/strong><\/p>\n<\/td>\n

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515 m\/sec max<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Shaking\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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20m\/sec \u00d7 3<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Power<\/span><\/strong><\/p>\n<\/td>\n

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\u00a0<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Input power\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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4.5V ~ 6.5V DC input<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Consuming current\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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70mA<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Protocol:<\/span><\/strong><\/p>\n<\/td>\n

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\u00a0<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Input power\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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4.5V ~ 6.5V DC input<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Consuming current\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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70mA<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Format\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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NMEA 0183 GGA, GSA, GSV, RMC, VTG, GLL<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Size\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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62mm diameter, 21mm height<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Length of signal cable\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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4.5 meters, extension cable max.40 meters upon request<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n

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Operating temperature\uff1a<\/span><\/strong><\/p>\n<\/td>\n

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-0\u00b0C to +65\u00b0C<\/span><\/strong><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div><\/div><\/div><\/div>

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5). Digits slave clocks<\/strong><\/h3>\n

Wall mount (single side) or ceiling mount(double side)<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Specifications:<\/strong><\/h3>\n

\u00a0<\/p>\n

1.LED digit height :4\u201d or 2\u201d, 6 digits or 4 digits, Color: RED<\/strong><\/p>\n

2.Time accuracy: \u00b13sec per day\uff0825\u2103 off line\uff09\u3002<\/strong><\/p>\n

3.Synchronized to Master clock wired or wireless, Keep on running when off line\uff0csynchronization time <2 seconds when recovered.\u3002<\/strong><\/p>\n

4.12\/24 hours format selectable, LED brightness adjustable according to environments.<\/strong><\/p>\n

5.When power failure\uff0cLED blanked, internal clock still working\u3002<\/strong><\/p>\n

6.Humidity\uff1a10~90%<\/strong><\/p>\n

7.Temperature\uff1a0\u2103 to +50\u2103\u3002<\/strong><\/p>\n

8.aluminum case with non-glare acryl-face\u3002<\/strong><\/p>\n

I\/P power\uff1aAC90~240V full range\uff0c50 \/ 60HZ\u3002<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Calendar clock<\/strong><\/h3>\n

\u00a0\u00a0 Model: MAS-1A<\/strong><\/h3>\n<\/div>\n<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div>
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Dimensions: 450mm(W) x 550mm(H) x 80mm(D)<\/strong><\/p>\n

Showing Calendar data (weekday<\/strong>\/day\/month\/year) in abbreviations<\/strong><\/p>\n

4 digit clock (hour\/minute), second circle with ZigBee transceiver, antenna (140mmH), or wired RS422 transmission<\/strong><\/p>\n

Wall hanger attached to the case.<\/strong><\/p>\n

LED:\u00a0 Y\/M\/D, Weekday=2\u201d, H\/M=2.6\u201d(6.6cm), Sec circle diameter=250mm<\/strong><\/p>\n

12H or 24H selectable<\/strong><\/p>\n

Synchronization indicator by colon<\/strong><\/p>\n

Brightness control by infrared keypads<\/strong><\/p>\n

Can be use as Master\/slave operation or stand-alone<\/strong><\/p>\n

Power supply:\u00a0 External AC adaptor<\/strong>\u00a0I\/P 100~240VAC O\/P: 15VDC\/4A<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Large calendar clock<\/strong><\/h3>\n

Model: MAS-3<\/strong><\/h3>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Showing Calendar data (year\/month\/day &week day<\/strong>\u00a0in abbreviations<\/strong><\/p>\n

4 digit clock (hour\/minute), second circle with ZigBee transceiver, antenna (140mmH),<\/strong><\/p>\n

Wall hanger attached to the aluminum case.<\/strong><\/p>\n

Dimensions: 730mm(W) x 730mm(H) x 65mm(D)<\/strong><\/p>\n

LED:\u00a0 Y\/M\/D, Weekday=2\u201d, H\/M=5\u201d(13cm), Sec circle diameter=510mm<\/strong><\/p>\n

12H or 24H selectable<\/strong><\/p>\n

Synchronization indicator by colon<\/strong><\/p>\n

Brightness control by infrared keypads<\/strong><\/p>\n

Can be use as Master\/slave operation or stand-alone<\/strong><\/p>\n

Music sound for each right hour can be programmable.<\/strong><\/p>\n

Power supply:\u00a0 External AC adaptor<\/strong>\u00a0I\/P 100~240VAC O\/P: 15VDC\/4A<\/strong><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

Wired and ZigBee Wireless master\/slave c…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"fullwidth.php","meta":{"footnotes":""},"class_list":["post-642","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=\/wp\/v2\/pages\/642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=642"}],"version-history":[{"count":2,"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=\/wp\/v2\/pages\/642\/revisions"}],"predecessor-version":[{"id":1113,"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=\/wp\/v2\/pages\/642\/revisions\/1113"}],"wp:attachment":[{"href":"https:\/\/www.chilin98.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}