Function Depend Troubleshooting; Functions - Agilent Technologies E4991A Service Manual

Function Depend Troubleshooting

Functions

The E4991A has the following typical functions.
• The hardkeys and knob located on the front panel are divided 4 blocks labeled
"Entry/Navigation block", "Measurement block", "Stimulus block", and "System
block" respectively. Some of the front panel keys control the E4991A functions
directly. Refer to "To check the Front Panel" on page 179, if you want to check the
front panel.
• Almost all the information required for the measurement value, setup state, result data
processing, menu bar, softkey label and others is indicated on the color LCD display.
An 8.4-inch TFT display is used. Refer to "To check the LCD" on page 179, if you
want to check the LCD.
• Use of the external keyboard ensures effective entry of the numerical value and
character string which is connected to the E4991A rear panel. Refer to "To check the
External Keyboard" on page 179, if you want to check the external keyboard.
• Use of the mouse allow you to freely move the pointer on the E4991A LCD display,
and effective perform a great variety setups which is connected to the
panel. Refer to "To check the Mouse" on page 180, if you want to check the mouse.
• The floppy disk drive is used to save the E4991A setup state and measurement data in
the floppy disk and to call them up. It is compatible with a 3.5-inch, 720KB or 1.44MB,
DOS format floppy disk. Refer to "To check the FDD" on page 180, if you want to
check the FDD.
• The external color monitor is available to display the same information as the E4991A
LCD. Refer to "To check the VGA Display Output" on page 180, if you want to check
the VGA Display Output.
• The external trigger input terminal allows you to enter the trigger signal to command
execution of measurement. Refer to "To check the External Keyboard" on page 179, if
you want to check the external trigger input.
• You can use the LAN port to connect the E4991A to the LAN. Refer to "To check the
LAN (for serial prefix JP1KH, JP2KH, and MY432)" on page 181, if you want to
check the LAN.
• A specified printer is available to print out the E4991A measurement display, setup
display and others.You can use it to connect the printer parallel port. Refer to "To check
the Printer Parallel port ( for serial prefix JP1KH, JP2KH, and MY432)" on page 188,
if you want to check the printer parallel port.
• It is available to build an automatic measurement by connecting the external controller
and other equipment through GPIB connector. Refer to "To check the GPIB" on
page 188, if you want to check the GPIB.
Chapter 4
Troubleshooting
Function Depend Troubleshooting
E4991A
rear
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