本帖最后由 blendstock 于 2017-8-8 23:17 编辑
国外网站看到的，有个电容是可以调节的，能够微调表的快慢，喜欢动手的高手可以试试。
另外，英语得好[s:90]
详见此网站 http://mygshock.com/wiki/Improve ... e_target_watch_time
或看粘贴的文本：
Materialsrequired: § 1. G-Shock to be adjusted (the “target”watch). § 2. Accurate time source (e.g. time.gov ora clock that synchronizes with atomic time). § 3. Case opening tools (page 9). § 4. Stopwatch (not the G-Shock that isbeing adjusted). § 5. Notepad. § 6. Pen. § 7. Patience! Step 1 - Set the target watch time Set the target watch from an accurate timesource (the “base time”). If you are using an atomic clock as your source ofbase time, ensure that the clock has successfully synchronized within the lasttwelve hours. Step 2 - Check the target watch time You need to check exactly how close thetarget watch is to the base time. If you have performed step 1 perfectly, thenyou should find that the target watch time is exactly the same as the basetime. You could just try looking at the target watch and the base timesimultaneously, but unless the time difference is large you probably won’t beable to spot it this way. So here’s a better way to do it. § 1. Look at the base time, and start thestopwatch when the base time seconds reach 00. § 2. Look at the target watch, and stop thestopwatch when the target watch seconds reach 05. If you had set the target watch verycarefully from the base time, the stopwatch should now read exactly 05 seconds.So if there’s any difference from 05 seconds, then the target watch is slightlyoffset from the base time. To get the target watch offset, simplysubtract 5 from the stopwatch reading. So: Offset = Stopwatch reading - 5 For example, if the stopwatch reading is00:05:20 (i.e. 5 seconds and 20/100ths) then you calculate 5.20 - 5 = 0.2. Sothe target watch is running 0.2 seconds slow. On the other hand, if the stopwatchreading is 00:04:70 (i.e. 4 seconds and 70/100ths) then you calculate 4.70-5 =-0.3. So the target watch is running 0.3 seconds fast. In your notebook, write down today’s dateand the target watch offset. (Don’t forget the + or - sign!) Step 3 - Determine the target watchaccuracy Wait one day, or as near as you can get to24 hours later. Repeat step 2. As the target watch has now been running aday since you synchronized it, the new target watch offset enables you tocalculate how fast or slow the watch is running. In your notebook, you’ll now havesomething like Table 1.1. Table 1.1: Accuracy chart | Day | Target Watch Offset (seconds) | | Monday | -0.1 | | Tuesday | -0.5 |
Now subtract the first figure from the second one. In the example, -0.5 - -0.1= -0.5 + 0.1 = -0.4. This figure is the number of seconds the watch has lost ina day. In this case, the figure is negative, so the watch has gained 0.4seconds.
Step 4 - Note the target watch accuracy Write down the date, time, and how muchthe target watch gained or lost. Your notebook will look something like Table1.2. Table 1.2: Accuracy chart | Day | Target Watch Offset | Change | | Monday | -0.1 | | | Tuesday | -0.5 | -0.4 |
Step 5 - Adjust the trimmer capacitor Remove the back cover of the target watch.Find the trimmer cap (indicated in Fig. 1.1).
Figure 1.1: Finding the trimmer cap The trimmer cap may be in a slightlydifferent location in your watch. You don’t have to remove the module from thecase in order to get access to the trimmer. Turn the trimmer cap about 1/32 of a turnin one direction. The precise amount doesn’t matter, but it should be a veryvery slight adjustment. No advice can be given on which direction to turn it;depending on the precise position of the trimmer, clockwise may speed up thewatch, or may slow it down. Just try clockwise first, and if you find the changeis going the wrong way, next time try counter-clockwise. Now repeat the whole process, and keeprepeating until you are happy with the accuracy. As the watch gains accuracy,you should make smaller and smaller adjustments to the trimmer each day. It is veryhard to judge these tiny adjustments until you get more experience, so you mayfind that sometimes you have gone a little too far in one direction. That’sfine; the next day, you can just make a small tweak to reverse it. You may find that after a while you haveto leave two or three days in order to detect a difference between the targetwatch and the base time. You might feel that this is a good time to stop! With a lot of patience, and experience,you can end up with a G-Shock that remains accurate to within a second or twoover the course of several months. Who needs atomic time? | 
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发表于 2017-8-8 23:14:25
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