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1. Overview

 The new QWA-5A clock tester is suitable for precisely testing all kinds of clock circuits with crystal oscillator working at 32.768KHz, for example: quartz clocks,electronic watt-hour meter,computer motherboard,temperature controller,timer,electronic weigher and electronic cash register with timer function. Its appearance is depicted as Figure.1.

Figure.1  QWA-5A clock tester

QWA-5A clock tester especially suits the fast testing of finished products or semi-finished products. Additionally, our QWA-5A clock tester has a tinny probe with it, which can suits the testing of bigger circuit boards.

QWA-5A has three stalls:

u  ppm:part per million

u  s/d:seconds/day

u  s/m:seconds/month

Compared with the same type of products from other companies, our QWA-5A has the following advantages:

u  with a more sensitive sensor in it;

u  taking non-contact method;

u  with advanced CPU and TCXO(Temperature Compensated Crystal Oscillator);

u  with the function of alarming, and the user can set alarming range;

u  easy setting procedure;

u  accuracy is better than 0.3ppm;

u  parameters that was set once won't be lost when starting again

2. Features

① measuring objects: quartz clock and clock circuit board

② voltage: 180V-240V AC  50Hz 60Hz

③ testing frequency: 32.768KHz        

④ reference frequency:16.384MHZ TCXO      

⑤    testing accuracy: better than 0.3ppm

⑥ range: ppm:part per million; s/d:seconds/day; s/m:seconds/month

⑦ signal strength indicator: level meter indicator

⑧ alarming setting range:±220ppm

⑨ volume: 587.5px×262.5px×750px

⑩display mode: four-digital tube display

⑪processor: AVR quick type