HP 54710A - Record Length

Record Length
Record length sets the memory depth for the waveform record. Record
length is available in both the real-time and equivalent-time sampling modes.
The choices for record length are automatic or manual.
The time between the sample points equals 1 divided by the sample rate, and
the amount of data in memory equals the time between the points times the
number of points. For example, if the sample rate is 2 GSa/s and the record
length is 400 points, the time between the sample points is 0.5 ns; and, 0.5 ns
times 400 points is 200 ns of waveform data stored in the waveform record.
Because there are ten horizontal divisions, set the time base to 20 ns/div to
display the whole waveform record.
1
Sample
Rate
(
Record Length
) =
Time
Duration of the Record
There are some points you should remember when you are mixing plug-ins,
(using both single-wide plug-ins and a two-wide plug-in). The maximum
record length is 16K per plug-in slot on the A model mainframes, and up to
64K per plug-in slot on the D model mainframes. A two-wide plug-in, like the
HP 54721A, uses two plug-in slots which allows a maximum record length of
32K on the A model mainframes, and up to 128K on the D model mainframes.
When a single-wide plug-in and a two-wide plug-in are both turned on, both
plug-ins use the same record length up to 16K (or 64K). Above 16K (or
64K), the single-wide plug-in has still has a maximum record length of 16K
(or 64K) while the two-wide plug-in uses the selected record length up to
32K (or 128K). Remember, even though you can select a 32K (or 128K)
record length, a single-wide plug-in still has a maximum record length of 16K
(or 64K).
Acquisition Menu
Record Length
3–14