Why doesn't the Num Lock LED light up on my Keysight E4990A keyboard?
If the LED on the keyboard of your Keysight Measuring Instruments unit doesn't light up when you press the Num Lock key, there might be an issue with the A60 CPU module. Before replacing the A60 CPU module, verify that all connections to it are secure and normal, without any disconnections or loose connections.
What to do if multiple keys don't work on the Keysight Measuring Instruments front panel?
If multiple keys on the front panel of your Keysight Measuring Instruments unit are not working, the problem might be with the A52 Front Panel I/F board or the A60 CPU Module. Also, check the flat cable between the A52 Front Panel I/F board and A60 CPU Module.
Why does the display on my Keysight E4990A Measuring Instruments white out or turn blue during startup?
If your Keysight Measuring Instruments unit's display whites out, turns entirely blue, or shows a dialog box during system initialization, a mass storage problem is suspected. Try performing the mass storage recovery procedure.
What to do if the system fan inside Keysight E4990A Measuring Instruments doesn't run?
If the system fan inside your Keysight Measuring Instruments unit isn't running, the issue might be with the A51 DSP board or the flat cable connecting it to the A60 CPU module. Remove the outer cover of the E4990A to see if the fan starts running.
Why isn't the rear panel fan running on my Keysight Measuring Instruments?
If the rear panel fan (blower) of your Keysight Measuring Instruments unit isn't running, it's likely due to a power supply failure. Remove the outer cover of the E4990A and check if the +3.3 V and +5 V DC monitor LEDs on the A60 CPU module are lit.
What to do if Keysight E4990A beeps and shuts down immediately after power on?
If your Keysight Measuring Instruments unit beeps and shuts down immediately after powering on, the shutdown occurs because the system fan has stopped working. You should check the fan.
How to troubleshoot external controller issues with Keysight E4990A?
If your Keysight Measuring Instruments system doesn't respond to an external controller or fails to function normally, ensure the GPIB address is defined correctly, the GPIB cable is connected, no other instrument connected by the GPIB cable has the same GPIB address, and the GPIB cable connection does not form a loop.
Why date and time are incorrect on Keysight Measuring Instruments after startup?
If the measurement screen appears after startup, but the date and time displayed on the instrument status bar in the lower right part of the screen differ greatly from the previous settings on your Keysight Measuring Instruments, execute the system recovery.
Why Keysight E4990A enters service mode after startup?
If the Keysight Measuring Instruments system starts up but enters the service mode, execute the system recovery.
What to do if Keysight E4990A shuts down immediately after startup?
If the Keysight Measuring Instruments system starts up but automatically shuts down immediately, execute the system recovery.
Describes how to open the E4990A Help system.
Explains how to get context-sensitive help by pressing the Help key or F1.
Guides on opening and viewing the E4990A Help file on a PC.
Describes navigation methods within the help system.
Details naming conventions used in the help system, like file names and paths.
Outlines general safety precautions for operation, service, and repair of the instrument.
Instructions for updating pre-installed software and installing user application software.
Instructions to protect the E4990A, including reading warning labels and handling power cables.
Precautions regarding excessive voltage/current to test ports and bending cables.
Guidelines for preventing ESD damage to electronic components.
Troubleshooting steps for startup or operation problems before contacting support.
Details the names and functions of the parts on the E4990A front panel.
Details the names and functions of the parts on the E4990A rear panel.
Describes hardkeys for selecting channels and traces.
Information about the touch-sensitive LCD screen for displaying traces and settings.
Information on USB ports for connecting peripherals like keyboards and printers.
Steps for selecting, connecting, and setting up measurement accessories.
Explains how to set up measurement conditions including signal and sweep.
Describes various calibration methods for the E4990A Impedance Analyzer.
How to configure the E4990A to display measurement results effectively.
Guides through analyzing data using markers and performing calculations.
Details on setting talker/listener GPIB addresses for E4990A control.
Enables control of the E4990A via a web browser using HTTP.
Provides guidance on using Windows features and settings on the E4990A.
Steps to configure network settings for LAN connectivity.
Instructions on how to turn Windows Firewall ON or OFF.
Information on managing user accounts and passwords for system access.
Lists available options for the E4990A, including frequency and time base options.
Lists available documentation such as manuals, sales literature, and specifications.
Guides on identifying and resolving common operational issues and errors.
Covers procedures for cleaning, part replacement, and system recovery.
Information on controlling the E4990A remotely via GPIB, LAN, or USB.
Details the five types of remote control systems based on system controller and interface.
Overview of controlling the E4990A using SICL-LAN or telnet server.
Overview of device control via USB, equivalent to GPIB control.
Information on SCPI commands, their types, structure, and grammar.
Comprehensive reference for all SCPI commands and their syntax.
General| Brand | Keysight |
|---|---|
| Model | E4990A |
| Category | Measuring Instruments |
| Language | English |
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