Agilent Technologies 16712A Help Manual page 50

Chapter 1: Agilent Technologies 16712A 128K Sample Logic Analyzer
The Sampling Tab
illustrated below with time-tags 2, 5, 7, and 14. When transitions
happen at this rate, two cycles are stored for every transition.
Maximum Transitions Stored
If transitions occur at a fast rate, such that there is a transition at each
sample point, only one sample is stored for each transition as shown by
time tags 17 through 21 below. If this continues for the entire trace, the
number of transitions stored is 64K samples.
In most cases a transitional timing trace is stored by a mixture of the
minimum and maximum cases.
"Other Transitional Timing Considerations" on page 49
Other Transitional Timing Considerations.
Pod Pairs are Independent
In single run mode, each pod pair runs independently. When one pod
pair fills its trace buffer, it will not shut the others down. If there is a
pod pair with enabled data bits and with no transitions, you get a
message "Storing transitions after trigger for pods nn/nn." In repetitive
run mode, a full pod pair waits 2 seconds, then halts all other pod pairs.
Increasing Duration of Storage
A transition on any one of the 34 bits for each pod pair (if they are all
assigned to labels) will cause storage. Reducing the number of bits that
are turned on for any one pod pair will more than likely increase data
storage time. Separating channels which contain fast occurring
transitions from channels with slow occurring transitions also helps. If
separating the channels, be sure to use different pod pairs. It does not
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