Master Clock（Rack-Mount Type)
QCG-200
- QCG-200
■ QCG-200 is a master clock which is capable of receiving the precise time information from GNSS (GPS, QZSS, GLONASS, Galileo)
■ Exclusive GNSS antenna with receiver unit (GNS-300) is available separately to make a time correction for the internal clock in the QCG-200 periodically.
■ QCG-200 is capable of making analog secondary clocks activate directly and synchronizing them with a precise time.
■ QCG-200 is capable of generating time data (in accordance with RS-422) for digital secondary clocks and other computer systems.
・Automatically time synchronization with GNSS(GPS, QZSS, GLONASS, Galileo ).
・Time Accuracy when synchronized by GNSS signal is within ±5ms.
・Exclusive GNSS antenna with receiver unit can be purchased separately.
・High-accuracy crystal clock inside(Accuracy daily rate : within ± 0.1s)
・Rack mounting type complied with EIA(Electronic Industries Alliance) Standard
・Maximum 110pcs. of secondary clocks can be activated.
・Both Two hands and Three hands secondary clocks can be activated.
・Serial data signal output(RS422) is available to synchronize Digital Clocks and so on.
・Liquid Crystal Display(LCD) with dimmer function for monitor clock in 3 steps(off-mid-hi) on the front panel
・Daylight saving time and leap time can be set by key input.
・Time adjustable with Time Server(SNTP) through LAN(RJ45) as an option extension system
Related products
■Master Clock QCG-200
Timing section
【Crystal oscillator frequency】32.768 kHz
【Quartz accuracy】Within ±0.1 sec. (0℃~ +40℃)
Display section
【LCD】16 characters x 2 rows (with LED backlight) For time indication, operation guidance, etc.
【LED】Red LED for warning purpose Alarm LED lights up in the following cases:
・Reduction in internal voltage (short circuit of secondary clock output, etc.)
・Connection failure of f GNSS Receiver
・Continuous reception failure of GNSS Receiver (72 hours or more)
Operating section
【Front panel】8 keys
【Time setting】Automatic reception of time signal by GNSS Receiver, or input with keys on the front panel
Time correction
【Method】Regular automatic correction by GNSS Receiver (at 10-minute intervals), or 0-sec. adjustment with an exclusive key on the front panel
【Accuracy】Within ±5 ms (when GNSS Receiver is used)
Input/output
【Digital output】
◆Tx+ / Tx-：
・Transmission system /RS-422, start-stop transmission (asynchronous)
・Transmission rate /4,800 bps
・Bit structure：Data /8bits, Parity: None, Stop: 1 bit
・Data structure /Year, Month, Date, Day of week, Hour, Minute and Seconds ＊ Transmitted every second
【Secondary clock output (110 units in total)】
◆3-hands secondary clock 1s+ / 1s-：
・Max. number of clocks connected /Up to 110 units in total of both 3-hands and 2-hands types
・Quick advancing of hands /Double speed
・Pulse width /1000 ms (500 ms during quick advancing of hands)
◆2-hands secondary clock 30s+ / 30s-：
・Max. number of clocks connected /Up to 110 units in total of both 3-hands and 2-hands types
・Quick advancing of hands /60X speed
・Pulse width /500 ms
【GNSS I/F】Connected with optional GNS-300 (using shielded 6-core cable)
Over-current protection
【AC power input】NFB (1A)
【Internal DC24V】Glass tube fuse (3A)
【Secondary clock output】Output is suspended when current exceeds approx. 3.2 A (in case of short circuit, etc)
Input
【Power supply】AC 100～240 V, 50/60 Hz
Power consumption
Approx. 50W (under maximum load)
Operational temperature/humidity range
0℃～+50℃/ 20%～90%, non-condensing
Structure
【Overall dimensions】W480 x H88 x D280 (mm) (excluding protrusions) EIA 2U
【External finish】Stainless steel, melamine baking finish (pearl gray color)
【Weight】Approx. 3.5Kg (main body)
Spare parts
【Fuse】3 A x 2
■ GNSS Receiver GNS-300 （Option）
Reception section
【Power supply】DC 3.6～5.0 V, 90mA (supplied by QCG-200)
【Satellites】GPS, QZSS, GLONASS, Galileo
【Reception system】Parallel reception from 16 satellites
Operational temperature range
-20℃ ~ +60℃, Water resist: equivalent to IPX3(except connector)
Structure
【Overall dimensions】W142 x H65 x D110 mm
【Cable length】Approx. 10m (shielded 6-core cable)
Extension cable:
200 m or less - 1.25 sq
300 m or less - 2.0 sq
【Weight】Approx. 850g