Nanoseconds? Maybe.
However I would bet it is matter of signal quality.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 19.02.2025 o 00:56, rpinion865 pisze:
True nanoseconds.
"Confidentially doc, I am the wabbit."
Bugs Bunny
Sent from Proton Mail Android
-------- Original Message --------
On 2/18/25 6:28 PM, Charles Mills<[email protected]> wrote:
> Due to the cable being too long, it was taking x + y microseconds.
Must have been nanoseconds, right? Electric signals travel at approximately 150,000 miles per second. That's somewhere around 800 or 900 feet per microsecond. That would be a long cable.
https://youtu.be/9eyFDBPk4Yw
Charles
On Tue, 18 Feb 2025 20:07:16 +0000, rpinion865<[email protected]> wrote:
>Hey, I know how to fix that. Old story, new IBM 370/158 installed by third party. IPLed 158 and it ran for a few hours and then died. IPLed again, same thing. Third party CE attempted to diagnose the problem. After several hours, the third party gave up and agreed to pay for IBM to diagnose the problem. Local CEs unable to diagnose the problem. Problem escalated to level 1 & level 2. Still no solution. After 24 hours of this, IBM flew in one of the 370/158 engineers to the site. The engineer asked to IPL the 158. After a short time it died. The engineer walked to the back of the 158 and removed the panel. After a few minutes, the engineer said there was a wire that was too long. Everybody on site thought "yeah right". The engineer created a shorter cable and installed it. The 158 was IPLed and it ran without a problem. The IBM engineer stated it was a "timing problem" because a signal was supposed to reach its destination in x microseconds. Due to the cable being too long, it was taking x + y microseconds.
>
>No, this is not an urban legend, it really happened.
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