Keysight Technologies U3047AE04, Руководство пользователя и сервисное руководство

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User’s and Service Guide U3047-90002 17
U3047AE04 System Operational Check
System Operational Check
The following procedure will confirm that the RF interface cables between the Test Set and PNA-X
are installed and the system is working correctly.
Before beginning this procedure you should complete the following steps:
•
Stack the PNA-X on top of the Test Set.
•
Install the Test Set interface cable on the rear panel.
•
Install all of the RF interface cables on the front panel.
•
Install the included female 2.4 mm short (85056-60021) to PNA-X Port 1.
Equipment Setup
•
Power On both the Test Set and PNA-X.
•
Preset the PNA-X and make the following settings:
— Set to Multi-Port Mode
— Frequency range: 10 MHz to 70 GHz
— IFBW: 1 k Hz
— Scale: 20 dB/Div
— Set the PNA-X to measure S11
Check Results
The 2.4 mm short will be relocated to each Test Port and an uncorrected Sxx reflection response
trace should be displayed that resembles the following plots indicated in the table below. If you
suspect an RF signal path problem, refer to the RF cable diagram and check the interface
cables associated with this signal path for proper installation.
Table 8 Reflection Response Results
Reflection Port Response Trace Cable Path Diagram
Ports 1-4
Figure 12 on page 18 Figure 13 on page 18
Ports 5-8
Figure 14 on page 19 Figure 15 on page 19