如何解决安捷伦16720A生成数据和时钟的问题？

> 1）数据应在10KHz左右，但模式发生器允许的最小速率仅为1MHz。
是否有可能以较低的费率生成数据？
如果您有一个以请求的速度运行的外部时钟，那么您可以将其连接到'Clock In'，使用'External Clock'，PG将以输入时钟速率运行。
如果您没有外部时钟源，则必须使用0和1的字符串来合成较慢的数据速率。
例如，5 0后跟5 1看起来像是以设定数据速率的1/10运行的时钟。
PG设置为1MHz，即100KHz。
要获得10 KHz，你需要50 0和50 1。
数据位可以是100 0或100 1。
> 2）我想生成一个时钟和数据，最好是90度相移。
该时钟用于馈送逻辑分析仪探头的时钟输入。
我也可以这样做吗？
要做到这一点，对于一位，你将构建一个包含50行Data =（1或0）和Clock = 0的模式，然后是50行Data =（与之前相同），Clock = 1。
在这种情况下，“数据”和“时钟”是您分配给两个通道的任意名称。
这是GUI内置的宏功能的完美工作。
您可以构建2个宏，一个生成1，一个生成0，或者一个宏生成参数，1或0.> 3）我只能生成数据，但速率高达1MHz
但没有时钟输出选项。
要测试此输出，我想使用逻辑分析仪探针。
但我没有看到任何输出，可能是因为没有时钟并选择了错误的阈值电平。
我不确定是否可以设置码型发生器输出电平，因此无法为逻辑分析仪设置合适的阈值电平。
我使用示波器确认了模式发生器的数据输出。
除数据速率部分外，它是正确的。
您在示波器上看到了什么电压？
您是否将PG吊舱连接到电缆的末端？
如果没有，那么你需要得到一些。
不同的逻辑系列有不同的。
查看LA帮助文件中的各种类型。
如果没有PG吊舱，电缆不适用。
电缆上的电压是一种奇怪的差分ECL，无法直接使用。
连接pod后，只需将LA设置为相同的逻辑系列。
>我现在需要的只是探针的时钟输入，因此我需要使用模式生成器将其与数据一起生成。
我需要以较低的费率生成数据。
我想我上面回答了这个问题。
人



     以下为原文

  > 1) The data should be at around 10KHz but the pattern generator allows a minimum rate of only 1MHz. Is it possible to generate data at lower rates?

If you have an external clock, running at the requested speed, then you can attach that to 'Clock In', use 'External Clock' and the PG will run at the input clock rate. If you don't have an external clock source, then you will have to synthesize a slower data rate by using strings of 0's and 1's. For instance, 5 0's followed by 5 1's looks like a clock running at 1/10th of the set data rate. With the PG set to 1MHz, that would be 100KHz. To get 10 KHz, you would need 50 0's and 50 1's. A data bit would be either 100 0's or 100 1's.

> 2) I want to generate a clock along with the data, preferably with 90 degrees phase shift. This clock will be used to feed the clock input of the probe of logic analyzer. Can I do this as well?

To do this, for one bit, you would build a pattern with 50 rows of Data = (either 1 or 0), and Clock = 0, followed by 50 rows of Data = (same as before), and Clock = 1.

In this case, "Data" and "Clock" are arbitrary names that you have assigned to two of the channels.

This is a perfect job for the Macro capability that's built into the GUI. You either build 2 Macros, one that generates a 1, and 1 that generates a 0, or one Macro with a passed parameter, either 1 or 0.

> 3) I was able to generate only the data, but at high rate of 1MHz but there is no option for a clock output. To test this output, I want to use the Logic Analyzer probe. But I do not see any output, probably because of absence of clock and selecting wrong threshold levels. I am not sure if I can set the pattern generator output levels and thereby I cannot set the appropriate threshold level for Logic Analyzer. I confirmed the data output from pattern generator using an oscilloscope. It is correct except for the data rate part. 

What voltages did you see on the scope?

Do you have PG pods connected to the ends of the cables? If not, then you need to get some. There are different ones for different logic families. Look in the LA help file for the various types. The cables are not intended for use without the PG pods. The voltages on the cables are a weird differential ECL that can't be used directly. Once you have pods connected, then just set the LA to the same logic family.

> All I need now is a clock input for my probe, thereby I need to generate it along with the data using the pattern generator. And I need to generate the data at lower rates.

I think I answered this above.

Al

非常感谢你的回复。
我看到电压为-1.73V和-0.8V作为2个电压电平。
我有一个用于探测器的吊舱，但我没有探测PG。
因此，PG的pod将数据转换为特定的格式，而不必在GUI中对其进行编程，对吧？
此致，Nikhil



     以下为原文

  Thank you very much for this reply. 

I saw voltages as -1.73V and -0.8V as the 2 voltage levels. I have a pod for the probe but I do not have a probe for the PG. So, the pod for PG converts the data into a specific format without me having to program it in the GUI, right?

Regards,
Nikhil

>我看到电压为-1.73V和-0.8V作为2个电压电平。
我有一个用于探测器的吊舱，但我没有探测PG。
因此，PG的pod将数据转换为特定的格式，而不必在GUI中对其进行编程，对吧？
请从模式生成器概述开始阅读帮助。
您将需要至少一个用于数据的pod和一个用于时钟的pod。
人



     以下为原文

  > I saw voltages as -1.73V and -0.8V as the 2 voltage levels. I have a pod for the probe but I do not have a probe for the PG. So, the pod for PG converts the data into a specific format without me having to program it in the GUI, right?

Please read the help, starting with the Pattern Generator Overview. You will need at least one pod for the data, and one pod for the clock.

Al