HP 54754A TDR/TDT Setup Menu
Normalize 1 response . . . Normalize 2 response . . .
5-19
Normalize 1 response . . .
Normalize 2 response . . .
When the Stimulus is 1 and 2, there are two menus,
Normalize 1 response
and
Normalize 2 response
, which are used to normalize the two independent TDR
channels separately. The functions allow you to change the risetime of the
normalized step, to select TDR and TDT normalization, to turn on or off the
display of the normalized TDR or TDT trace, to change the scaling of the
normalized trace, and to establish the normalization filter values and reference
plane.
Risetime
The Risetime function allows you to change the normalized step’s risetime from
a minimum of
10 ps
or
which ever is greater, to a maximum of
While the TDR step’s risetime applied to the system under test is fixed, the
measured response has a set of mathematical operations applied to it. These
mathematical operations effectively change the displayed response to the
system just as if a different TDR step risetime had actually been applied. This
allows you to select a risetime for TDR/TDT measurements that is close to the
actual risetime used in your system. This risetime value applies to both TDR
and TDT normalized channels. For more information on normalization, see the
chapter titled Improving Time Domain Network Measurements.
Key Path TDR/TDT Setup
Normalize response . . . Risetime
TDR/TDT
The
TDR/TDT
function is used to select between TDR and TDT for normalization.
Both TDR and TDT channels can be normalized. This control selects which
normalized trace is referred to for the following controls. Before TDT
normalization can be done, you must select a TDT destination (
TDT 1 dest
).
Key Path TDR/TDT Setup
Normalize response . . . TDR/TDT
min 8 points
time per division (s/div) 10 divisions×
record length
---------------------------------------------------------------------------------------------
×=
max 5 time per division (s/div)×=
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