U3042AM08
Service Information
S41 - Receiver to
Ports (2 or 4, to 8
and 12)
Switch 41 provides control of the Receiver path to PNA-L Port 4 or PNA-X Port 2 and
test set Ports 8 and 12. In the state shown in the block diagram, switch 41 routes the
Coupler Arm from the PNA Port 4 to the B Receiver and all unused test set ports (2, 8
and 12) Coupler Arm paths are terminated.
Test Set Control
Board
The test set Control board (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 U3042AM08 User's and Service Guide
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