There is a potential problem, particularly with the 5370A and possibly the 5370B which may not be generally known.
1) Crosstalk between the microstriplines from the Schmidt trigger outputs (XA4: U1, U2) to the arming board amplifier inputs (XA22: U19, U20) 2) Cross talk between the microstriplines going from the multiplexers (XA22: U15, U16) to the START and STOP flipflops (XA22: U17, U21) 3) Modulation of the 200MHz reference at and by the mixer inputs (XA19, XA20:U7) 1 + 2 cause differential nonlinearity in instances where the signals are simultaneously active near the trigger points. Nonlinearity is well over 100ps. 3 causes a nonlinearity of less than 100ps but is always present Bruce _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
