GDS-5A石英钟表测试仪说明书（英文）.doc免费

GDS-5A CLOCK TESTER USER MANUAL s sHEN zhen WISDOM SOURCE Electronics Co Ltd [ADRESS：Mingzhi Street, Baoan District, ShenZhen, China] 1. Overview ?The new GDS-5A clock tester is suitable for precisely testing all kinds of clock circuits with crystal oscillator working at 32.768KHz and 75KHz, for example: quartz clocks、electronic watt-hour meter、motherboard、temperature controller、timer、electronic weigher and electronic cash register with timer function. Its appearance is depicted as Figure.1. Figure.1 GDS-5A clock tester GDS-5A clock tester especially suits the fast testing of finished products or semi-finished products. GDS-5A’s RS232 interface can be used to connect GDS-5A and computer in order to gather testing results. Additionally, our GDS-5A clock tester has a tinny probe with it, which can suits the testing of bigger circuit boards. GDS-5A has three stalls: ppm：part per million, accurate to 0.1ppm s/d：seconds/day, accurate to 0.01 seconds s/m：seconds/month, accurate to 0.1 seconds Compared with the same type of products from other companies, our GDS-5A has the following advantages: with a more sensitive sensor in it; taking non-contact method; thinner shell making it more easy to use and more suitable for the pipeline; with advanced CPU and TCXO(Temperature Compensated Crystal Oscillator); with a 16-level signal strength indicator; with the function of alarming, and the user can set alarming range; easy setting procedure; accuracy is better than 0.3ppm; extra：crystal oscillator slot to screen crystal oscillator according to PPM value and RS232 to connect GDS-5A to a computer 2. Features ① measuring objects: quartz clock and clock circuit board ② voltage:220V AC 50Hz ③ testing frequency: 32.768KHz 75KHz ④ reference frequency:16.384MHZ TCXO testing accuracy: better than 0.3ppm ⑥ range: ppm：part per million; s/d：seconds/day; s/m：seconds/month ⑦ signal strength indicator:16 level indicator ⑧ alarming setting range: