Agilent Technologies Option H48 Multiport Test Set Z5623A - Manual (Page 92)

5 -24 Agilent Technologies Z5623A Option H48
Performance Verification
Setting Up Limit Testing
Limit Testing for Return Loss (Port Off)
The limit test for return loss (port off) is identical to the limit test for
return loss (port active) with the following exceptions:
• The title
• The limit table
Recalling the “Port Active” Limit Test File
Recall the limit test file for return loss (port active). It should be
recorded in
Table 5-3 on page 5-7 .
Specifying the Title
Step 1. Click View on the menu bar. When the View menu appears, scroll down
to the Meas Display button and pause momentarily. When the Meas
Display menu appears, scroll down to the Title... button and click it.
See
Figure 5-2 .
Step 2. The Title Entry window is shown in Figure 5-3 . When this window pops
up, click in the Entry field.
Step 3. Type “Return Loss (Port Off)” in the Entry field, then press the Enter
key on the USB keyboard (or the OK button in the Title Entry window)
to close the window and display the new title.
Setting Up the Limit Table
Step 1. Click Trace on the menu bar. When the Trace menu appears, scroll
down to the Limit Test... button and click it. See Figure 5-8 .
Step 2. When the Limit Test window pops up as shown in Figure 5-9 , click the
Show Table button, then click the OK button.
Step 3. When the Limit Table pops up, transfer entries from Table 5-6 to the
Limit Table on the network analyzer. (Consult the shortcuts listed on
page 5-13 .) The result is shown in Figure 5-24 .
Table 5-6 Limit Table Entries for Return Loss (Port Off)
Segment
Number
Segment
Type
Begin
Stimulus
End
Stimulus
Begin
Response
End
Response
1 Max 300 kHz 1.3 GHz −27.5 dB −27.5 dB
2 Max 1.3 GHz 3 GHz −21.5 dB −21.5 dB
3 Max 3 GHz 6 GHz
−17 dB −17 dB
4 Max 6 GHz 9 GHz −14.5 dB −14.5 dB