Agilent Technologies ENA Series Betriebsanweisung Seite 510

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Seitenansicht 509
504 Chapter 15
Measurement Examples
Evaluating a Duplexer
In the example shown in Figure 15-15, the insertion loss (loss) is 1.627 dB and the 3-dB
bandwidth (
BW) is 71.04 MHz.
Step 3. Determine the isolation between Tx and Rx.
In the example shown in Figure 15-15, isolation (response value of marker 1) is 6.612 dB.
Step 4. Determine the return loss of Tx.
In the example of Figure 15-15, return loss (response value of Marker 1) is 12.65 dB.
Step 5. Determine the return loss of Rx.
Moving Marker 1 to the trace maximum Max
Bandwidth search: ON Bandwidth (Turn it ON)
Setup Description Key Operation
Setup Description Key Operation
Activating Trace 3
Marker 1: ON
Search/Tracking: ON
-
Tracking (Turn it ON)
Moving Marker 1 to the peak near 1.92 GHz
Peak - Search Left or Search Right (press as
many times as necessary)
Setup Description Key Operation
Activating Trace 4
Marker 1: ON
Search/Tracking: ON
-
Tracking (Turn it ON)
Moving Marker 1 to the peak in the pass band
Peak - Search Left or Search Right (press as
many times as necessary)
*1
*1. If you cannot move the marker to the desired peak, use Peak Excursion to change the
peak deviation and then execute the search again. (Example:
Peak Excursion -
).
Setup Description Key Operation
Activating Trace 5
Marker 1: ON
Search/Tracking: ON
-
Tracking (Turn it ON)
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