源锁定取决于大致了解内部振荡器的频率，它们会随着时间的推移而漂移，或者可能是一个元件在温暖时老化，所以当你第一次打开它时就可以了，但是然后漂移超出范围。
有一系列的服务测试允许系统自我校准，但是自从我做了这个程序以来，已经有数年和数年（该单元可能已经20年了）。
我曾经把它们都记住了。
要运行服务测试，您必须移动一个eeprom保护跳线，以便存储结果。
主要是源锁相预测试和源相锁定校准。
预测试设置默认值，锁相校准使用这些值来确定最终值。
您也可以尝试关闭避免刺激。
如果断块避免关闭会导致锁相问题消失，那么可能是支线避免调整关闭。
由于刺激避免取决于很多事情，因此随着单元加热并导致锁相有问题，它可能会随机出现。
你必须google服务测试文件;
我不知道哪里有任何问题。
以上来自于谷歌翻译
以下为原文
The source phase lock depends upon knowing roughly the frequency of the internal oscillators and they will drift with time, or possibly a component is aging when warm and so when you first turn it on it is OK but then drifts out of range.
There are a series of service tests that allow the system to self calibrate but it has been years and years (that unit is likely 20 years old) since I did the procedure. I used to have them all memorized.
To run the service tests you will have to move an eeprom protection jumper that will allow the results to be stored.
The main ones are the source phase lock pretest and the source phase lock calibration.
The pretest sets defaults values, that are used by the phase lock calibration to hone-in on the final values.
You might also try turning spur-avoidance off. If the spur avoidance off makes phase lock problems go away, then it might be the spur avoidance adjustment is off. Since spur avoidance depends on a lot of things, it can come on randomly as the unit heats and cause the phase lock to have trouble.
You'll have to google for service test documents; I don't know where any are right off the top of my head.
源锁定取决于大致了解内部振荡器的频率，它们会随着时间的推移而漂移，或者可能是一个元件在温暖时老化，所以当你第一次打开它时就可以了，但是然后漂移超出范围。
有一系列的服务测试允许系统自我校准，但是自从我做了这个程序以来，已经有数年和数年（该单元可能已经20年了）。
我曾经把它们都记住了。
要运行服务测试，您必须移动一个eeprom保护跳线，以便存储结果。
主要是源锁相预测试和源相锁定校准。
预测试设置默认值，锁相校准使用这些值来确定最终值。
您也可以尝试关闭避免刺激。
如果断块避免关闭会导致锁相问题消失，那么可能是支线避免调整关闭。
由于刺激避免取决于很多事情，因此随着单元加热并导致锁相有问题，它可能会随机出现。
你必须google服务测试文件;
我不知道哪里有任何问题。
以上来自于谷歌翻译
以下为原文
The source phase lock depends upon knowing roughly the frequency of the internal oscillators and they will drift with time, or possibly a component is aging when warm and so when you first turn it on it is OK but then drifts out of range.
There are a series of service tests that allow the system to self calibrate but it has been years and years (that unit is likely 20 years old) since I did the procedure. I used to have them all memorized.
To run the service tests you will have to move an eeprom protection jumper that will allow the results to be stored.
The main ones are the source phase lock pretest and the source phase lock calibration.
The pretest sets defaults values, that are used by the phase lock calibration to hone-in on the final values.
You might also try turning spur-avoidance off. If the spur avoidance off makes phase lock problems go away, then it might be the spur avoidance adjustment is off. Since spur avoidance depends on a lot of things, it can come on randomly as the unit heats and cause the phase lock to have trouble.
You'll have to google for service test documents; I don't know where any are right off the top of my head.
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