Various errata for the HP5370B manual:

p 3-24, "TB1"

The manual states that this is only good for timeintervals < 320ps.  This should read 320µs.

p 8-101, "LA0", "LEN0", "LEN1" & "LEN2"

These signals are mislabeled.  Signal labeled LA0 is LEN0, LEN0 is LEN1, LEN1 is LEN2 and LEN2 is LA0.
(See also: 8-99)