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1. Overview

The new quartz watch/clock analyzer QWA-5A 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 quartz watch/clock analyzer QWA-5A

quartz watch/clock analyzer QWA-5A 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:

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

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

with a more sensitive sensor in it;
taking non-contact method;
with advanced CPU and TCXO(Temperature Compensated Crystal Oscillator);
with the function of alarming, and the user can set alarming range;
easy setting procedure;
accuracy is better than 0.3ppm;
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

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: 23.5cm×10.5cm×30cm

⑩display mode: four-digital tube display

⑪processor: AVR quick type