R3765/67G Series Network Analyzer Operation Manual
7.7 Time Domain Function(OPT 70)
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Operating procedure:
Press
[FUNCTION]
to call the function menu.
Press {TRANSFORM} to call the time domain transformation menu.
Note:
When OPT70 is not installed, [TRANSFORM] will not be displayed.
Time domain transformation menu
Each channel can be set individually.
{TRANSFORM ON/OFF}
: Toggles the time domain display ON or OFF.
ON: Displays the time domain.
OFF: Displays the frequency domain.
{TRANSFORM MODE [ ]} : Calls the time domain mode menu.
{TRANSFORM STIMULUS [ ]}:
Calls the time domain stimulus menu.
It is possible to toggle whether or not the distance is
displayed.
{WINDOW [ ]}
: Calls the window menu to select a window (see section
7.7.2).
{GATE [ ]}
: Calls the gate menu to select a gate (see section 7.7.3).
7.7.2
Window Processing
Leakage phenomenon in Fourier transformation occurs due to data discontinuity in the frequency
domain, or data truncation in the start and stop frequencies. This leakage phenomenon conse-
quently causes the ripples called ringing. Window processing is required to reduce this, so that
the window is applied to the frequency domain data to reduce ripples in the time domain.
Three types of windows are available: {MAXIMUM} provides the maximum effect to reduce the
ringing, but the rise time (impulse width) is longer. On the other hand, {MINIMUM} does not sup-
press the ringing, but sharp rising characteristics can be obtained.
Operating procedure:
Press
[FUNCTION]
to call the function menu.
Press {TRANSFORM} to call the time domain transformation menu.
Press {WINDOW [ ]} to call the window menu.
Note:
When OPT70 is not installed, [TRANSFORM] will not be displayed.
Window menu
Each channel can be set individually.
{MAXIMUM}
: Specifies the 4-term Blackman-Harris type. The
maximum reduction can be obtained.
{NORMAL}
: Specifies the 2-term Hamming type.
{MINIMUM}
: Specifies the rectangular type. Window processing is
not performed.
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