NI 6583 strobe line impedance matching

[mar_just_one]

Hello,

I am feeding the strobeA line of the NI 6583 with a clock signal from an external 50 ohm driver. I am using SHC68-C68-D4  50ohm cable as a transmission line.

It is specified that the input impedance of the strobe line is 50Kohm.  Obviously we have an impedance matching situation here. Most of the signal is reflected back to the source. Since I am probing at the source, I can see that the clock signal is extremely distorted. What is the most proper (an realizable) way to suppress the reflections and to avoid distorting the clock signal at the source.

Regards, 

Marwen.

[Cavarval]

Hello Marwen,

I am not really an electronics guy but I found this. It seems like in your case you can use resistors to match the clock's 50 Ohms to the strobe lines 50 kOhms. According to the article, that should drastically decrease the signal reflections.

Hope it helps.