Because you need something that has a finely variable delay in the range of 2 to 5ns, a pulse width adjustable from 5 to 50ns, and a minimum transition time of less than 1ns. And, it has to be able to drive 50 ohms to +/-1V.
The 8015A's shortest delay is 20ns, and its minimum pulse width is 10ns, and its minimum transition is 6ns. Basically, it isn't even close to being good enough to calibrate a 5370[AB]. Looking through the available pulse generators, I find some have one needed characteristic, but none of the others. The 8082A seems to be exactly what is needed (but just barely). -Chuck Harris phil wrote: > Why an 8082A, that's a 250MHz unit. Would not an 8015A 50MHz work. I think > it's the same only with a lower bandwidth. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
