Hi All,
I've just uploaded a PDF I created that I hope helps describe the S-52 Pulse Generator output.
The S-52 generates a fast 25ps output edge for use in the 7S12 (and other) Time Domain Reflectometers. I was introduced to these fairly recently, and was quite confused by the Service Manual description. My S-52's behavior was suspect, and I couldn't be sure it was working or not. After help from members of this group I've come to understand its functionality a bit better and am on my way to resolving its issues.
By the way, to avoid confusion, the pictures used in the uploaded document are NOT of my S-52s output. Mine continues to not produce the pulse at the center of the waveform. Why is yet to be determined.
I don't claim to know these devices well, and I'm no great technical writer. But I hope this description clarifies this devices operation.
Dave
Dave Peterson