Theory of Operation
A3 Front Panel Assembly
A3 Front Panel Assembly
The front panel assembly is made up of a liquid crystal display (LCD), a keypad and, depending on the power meter option, a power reference cable assembly and a sensor cable assembly(s).
There are two inputs to the front panel assembly:
•the flex circuit from connector A2J4 of the processor assembly which controls the keypad.
•the ribbon cable from A2J3 of the processor assembly which controls the LCD display.
The power meter self tests contain display tests. These are accessed by
pressing System , More , Service , Self Test, Individual ,
Inputs
Display .
Agilent E4418B/E4419B Service Guide |
