U3020AS62
Service Information
Controller Module and Power Supply
Inside the controller module there are two main components, the AC-DC power supply and
controller board. The AC-DC power supply is a 12V/65W power supply that is converted to various
voltages by means of DC-DC converter inside the module. It provides regulated voltages to all
assemblies in the Test Set. The internal DC voltage has the following nominal specification:
•
+24 V
•
+12 V
•
+5 V
The controller board is the “brain” of the Test Set, it handles all the communication between the
Controller and the Test Set via LAN or GPIB connectivity.
39495EXT Module
This module provides the bias and control signals for the RF Switches.
Distribution Board
The Distribution board (Y1151A) provides a passive control signal interface between the
34945EXT module and the RF Switches.
I/O Distribution Board
The I/O Distribution board provides a passive control signal interface between the controller
module I/O port and the front panel Port LED board.
LED Indicator Board
This board provides an LED indication of the Port setting in the Test Set. The LED indicator
board is driven by the digital IO of the Test Set.
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Keysight U3020AS62 User's and Service Guide
