U3042AM04
Service Information
The RF Test Port connectors are male 3.5 mm. The coupling factor is approximately
-16 dB for the Coupled Arm (minimum -22 dB and max -12 dB at 26.5 GHz). The
insertion loss through the CPLR THRU path is typically < 4 dB at 26.5 GHz.
RF Switch Components
The test set uses 8 SP4T mechanical, DC to 26.5 GHz, switches (87104-60045). The
switches select the RF paths from the analyzer’s source and receiver through
interconnect cables to the test set.
Source and Receiver Switch Paths
Refer to the
System
Block Diagram,
for source and receiver
switch path details.
Test Set Control Board
The
T
est
S
et Control
B
oard (N5261-60006) is a surface mount, printed circuit
assembly (PCA). It provides a connection to the power supply, and the PNA Test Set
I/O for control of the RF switch paths through the Switch Interface board
(U3025-60062). The front panel “Active” and port LEDs are on only when the PNA has
addressed the test set. The rear panel fan is on when the controller board supplies are
operational.
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Keysight U3042AM04 User's and Service Guide
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