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.
What to do if Keysight Measuring Instruments cannot output to a printer?
If you cannot output to a printer from your Keysight Measuring Instruments, check that the printer is powered on, the line and connector cables are correctly connected, the printer is online, and that it has paper and ink.
Why Keysight Measuring Instruments show abnormal measurement values?
If the measurement value is not reproducible or clearly abnormal on your Keysight Measuring Instruments, verify that the DUT, connection cables, and other parts are connected correctly. Also, confirm that the connectors and cables used to connect the DUT are free from damage and poor contact. Ensure the calibration has been executed correctly, the calibration kit is selected correctly and is defined correctly. Finally, check if the stimulus signal output is turned ON.
How to fix a frozen screen on Keysight E4990A?
If the screen freezes and all operations become impossible on your Keysight Measuring Instruments, press the standby switch to turn OFF the power once, and then restart the system.
What to do if Keysight E4990A Measuring Instruments system freezes during operation?
If your Keysight Measuring Instruments system freezes during operation, press the standby switch to turn OFF the power and then restart the system.
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.
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.
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.
Why standby switch is red on Keysight E4990A Measuring Instruments?
If the standby switch color is red and does not start up the Keysight Measuring Instruments system, it could be due to trouble with the fan. Turn OFF and ON the line switch once, then turn ON the standby switch.
What to do if touch screen is inoperable on Keysight Measuring Instruments?
If the touch screen becomes inoperable on your Keysight Measuring Instruments, use the front panel keys, press System > Key Lock > Touch Screen & Mouse Lock OFF to turn OFF the lock. Alternatively, execute the calibration of the touch screen.
General| Brand | Keysight |
|---|---|
| Model | E4990A |
| Category | Measuring Instruments |
| Language | English |
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.
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