R&S RTO6, Руководство пользователя

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Pulse source and TDR/TDT analysis (options R&S RTO6-B7/K130)
R&S
®
RTO6
1057 User Manual 1801.6687.02 ─ 05
Remote command:
TDRT:BW
on page 2469
Domain, ε_r
Sets the domain of the x-axis: time or distance (in m or inch). If you select distance,
enter also the permittivity "
ε
_r" of the used DUT.
Remote command:
TDRT:DOMain
on page 2469
TDRT:PERMittivity
on page 2469
State
Select the TDR/TDT signals to be displayed and analyzed.
TDR delivers the impedance Z and the reflection coefficient
ρ
.
TDT delivers the normalized and corrected step response.
Remote command:
TDRT:SIGNal<m>STATe
on page 2469
Vertical scale
Set the vertical scale of the TDR/TDT signals.
Remote command:
TDRT:SIGNal<m>:SCALe
on page 2470
Offset
Set the offset of the TDR/TDT signals.
To set the position, assign position to the vertical Position knob ("File" menu > "Front-
panel Setup" > "Knobs"). Turn the vertical Position knob to change the position.
Remote command:
TDRT:SIGNal<m>:OFFSet
on page 2470
TDRT:SIGNal<m>:POSition
on page 2470
16.2.6 Measurement results
To get exact measurement results, set the horizontal time scale so that the complete
DUT is captured and visible on the screen. Thus, interference between the reflected
signals from the DUT is avoided. Interference can occur because the repetition rate of
the pulse source is linked to the horizontal scale to maximize measurement speed.
The results of the TDR measurements are the impedance waveform Z and the wave-
form of the reflection coefficient
ρ
.
To investigate details of the waveforms, use the zoom function. For further analysis,
you can use automatic and cursor measurements, histogram, mathematics and refer-
ence waveforms.
Data export
In the same way as channel waveforms, you can export the data of Z,
ρ
and H wave-
forms to file (one waveform per file). Raw data is not available.
TDR/TDT analysis (option R&S RTO6-K130)