![]() ![]() Through the timerType property, three different types of timers are supported: PreciseTimer, CoarseTimer, and Ver圜oarseTimer. In this blog post we'll look at some of the other timer classes provided by Qt that you may not be familiar with if you've only use a simple QTimer.īefore doing that, I'd like to point out a feature of QTimer you may not be aware of. And you probably know about the repetitive and single-shot modes of QTimer timers. Common use cases include polling for events (not always a good approach, but sometimes necessary), updating the user interface or performing some other function at regular intervals. Secondary clock drive: 30 hours (in case of power failure of more than 30 hours, hands are adjusted automatically after recovery.You have probably used the QTimer class for basic timing operations in Qt. 5 years (no indication on digital display, counting by internal clock only) Program: Retention of programs in EEPROM for approx. Maximum number of programs engaged: 1,000 steps (total steps in 8 channels) Programmable period : 1 week (can be used repeatedly) Weekly program: Maximum number of weekly programs engaged : 99 Programmable period : 2 years including this year (Basic setting can be used repeatedly) Yearly program: Designating up to 99 weekly programs for Basic, Period, National Holiday, and Special Day settings. Program review: Indicated on LCD digital display by switch operation Program setting: Set on PC and imported via USB memory “Keep”: Minimum unit of designated time setting : 1 minute / Minimum unit of duration setting : 1 second / Settable range : 1 minute~2 years Time signal: Minimum unit of designated time setting : 1 minute / Minimum unit of duration setting : 1 second / Rise time : Selection from 0, -3, -10 and -30 seconds Maximum allowable current : 16 A (AC 125 V), 10 A (DC 30 V) / Minimum applicable load : DC 5 V 100 mA Resistance load : AC 125 V 16 A, AC 277 V 10 A, DC 30 V 10 A / Maximum allowable voltage : AC 277 V, DC 30 V Switching of output operation: Manual switching available for each channel (auto, stop and manual) Output circuit: 8 independent channels Contact output (make contact) Time server: LAN interface: 10BASE-T, 100BASE-Tx Protocol: SNTPv3, SNTPv4 polarized signal, Every hour (Synchronizable loss/gain range: Less than 15 seconds) Signal voltage detection: Signal voltage stopper function (stops output when secondary clock driving voltage lowers)Įxternal synchronization input: 30-sec. Maximum driving capacity: 1,080mA, 360mA / circuitīackup power: DC 24V Built-in sealed Ni-Cd rechargeable batteryīattery protection: Overdischarge prevention circuit ![]() number of secondary clocks to drive: 90 units, 12mA / unit 30 units / circuit ![]() Leap second adjustment: Setting by operation switches * Leap second adjustment is made automatically.ĭriving signal: DC 24V 30-sec. Monitor clock: 60X speed quick advance of hands by APC systemĭaylight saving time: Set by program imported via USB memory Master clock: Setting year, month, date, hour and minute and resetting seconds to “00” Monitor clock: 30-second interval hand movement Master clock: Hour, minute, seconds and date Year, month, date and day-of-week Digital 24 hour indication (not displayed during power failure) Time accuracy: Weekly rate of less than ☐.7 seconds ( + 5℃~+ 35℃ ) 0 seconds after time correction Number of secondary clock circuits: 3 circuitĬrystal oscillator frequency: 4.194304 MHz It can bring the time of secondary clocks, computers, and other devices on the network into sync with the time of QT-78302. (3) Time correction with GNSS (when connected with an optional GNSS receiver GNS-300)īy connecting a GNSS receiver (GNS-300), the time is automatically corrected on a regular basis. Besides, by inputting a serial time signal (RS-422), the clock is kept in constant sync with the input time. polarized signal with the external synchronization input, the loss/gain of the clock is corrected automatically. Up to 30 secondary clocks can be connected to each secondary clock circuit (if the current consumption of each secondary clock is 12 mA).īy connecting a 30-sec. In addition, the programs can be set easily using computer application software, and they can be imported into the Yearly Programmable Timer by using USB memory. It is so high-quality as well as high-capacity as to allow up to 1,000 steps of programs to be set and have 8 channels of contact signal outputs to control various devices, offering the customers a wide varieties of functions to meet their requirements. SEIKO QT-78302 is a high-precision quartz master clock equipped with a yearly programmable timer function. รายละเอียดสินค้า YEARLY PROGRAMMABLE TIMER (GNSS Synchronization) Wall-Mount Type QT-78302 ![]()
0 Comments
Leave a Reply. |