Product overview
The SYN5302 type day difference calibrator is a multi-function calibrator designed, developed and manufactured according to the verification regulation of JJG 488-2018 instantaneous diurnal difference meter. The method of measuring the diurnal difference of the day difference detector is to transform the oscillating signal from the clock to the corresponding electrical signal by using the sensor. The difference between the period of the electrical signal and the nominal value is measured by counting method, and the daily difference is calculated. It can not only measure the electronic products of the built-in 32768Hz crystal oscillator, but also directly measure the clock error of the smart meter which outputs the 1Hz, and at the same time, it can also test the frequency accuracy of the pulse signal.
The day difference detector has the function of checking the electronic clock, smart meter, computer motherboard, electronic scale, clock equipment, electronic cash register, quartz clock, temperature controller, timer, timer and other timing products. It is widely used in metrology verification department, product quality inspection organization, clock production enterprise and intelligent electric meter production enterprise.
Product function
1) two functions of contact measurement and non-contact measurement.
2) used to detect the instantaneous diurnal difference of electronic stopwatch and quartz electronic clock.
3) the matching high sensitivity probe is suitable for various test scenarios.
4) portable mobile, which can be used both in the field and in the testing organization.
5) the result of measurement is automatically exported to the computer.
6) built in high precision constant temperature crystal oscillator OCXO;
7) signal intensity indication and alarm setting.
8) with crystal oscillator PPM screening function;
9) energy meter clock measuring function;
10) pulse frequency measurement function;
11) voice broadcast PPM measurement result function;
Product characteristics
A) high accuracy and high cost performance.
B) complete functions and reliable performance.
C) high accuracy, high reliability, convenience and intuition.
Typical application
1) test the instantaneous diurnal difference of the electronic stopwatch, the daily difference test of the clock product, and the verification of the difference of the second pulse of the electric energy meter.
2) product quality inspection organization, clock production enterprise and intelligent electric meter production enterprise;
Technical index
Electric stopwatch measure | frequency | 32.768KHz |
Measurement method | Non-contact measurement | |
Range of daily difference measurement | (0) 00 - Four Nine point nine nine Ninety-nine S/d | |
Measurement contents | Accuracy, PPM (PPM accuracy), s/d (diurnal difference), s/m (monthly difference), s/y (annual difference) | |
Measurement cycle | 1s, 2s, 5S, 10s, 20s, 60s, 100s | |
Daily difference measurement maximum error | + 0 03 Second / day | |
Electric energy meter measurement | frequency | 1Hz |
Measured interface | Optocoupler output terminal of electric energy meter | |
Measurement contents | Accuracy, PPM (PPM accuracy), s/d (diurnal difference), s/m (monthly difference), s/y (annual difference) | |
Measurement cycle | 1s, 2s, 5S, 10s, 20s, 60s, 100s | |
measurement accuracy | Less than 2E-8/1s, equal precision measurement It is related to the accuracy of crystal oscillator. | |
frequency measurement | measurement accuracy | Less than 2E-8/1s, equal precision measurement is related to the accuracy of crystal oscillator. |
Measuring frequency | 0.1Hz ~ Ten MHz (pulse) | |
Signal communication signal | Serial port output | 1 way DB9 RS232C output test content |
USB storage (reserved) | Insert U disk to automatically store test data. | |
inside constant temperature Crystal oscillator index | frequency | 10MHz |
Boot characteristic V | Less than 1 x 10-8 | |
Frequency accuracy A | Less than 1 x 10-7 | |
Daily aging rate | Less than 5 x 10-9/ days | |
Second stability | Less than 5 x 10-11/s | |
Environmental characteristics | working temperature | 0 C ~ + 50 C |
relative humidity | Less than 90% (40 C) | |
Storage temperature | -30 C ~ + 70 C | |
Power supply | AC 220V The power is less than 10W | |
Chassis dimensions | Portable portable case 410mm*340mm*130mm | |
weight | About less than Six Kg | |
Option | Customize similar products according to customer requirements. |
Certificate display
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