To protect your E4990A, follow the instructions below:
Do not exceed the values provided in the specifications guide or as indicated by the yellow warning labels on the front panel of the E4990A. Refer to the specifications for the conditions required to meet the listed specifications. There will be information regarding E4990A settings, and calibration requirements.
Do Not Plug off Power cable until completing the shutdown process.
If you directly interrupt the power supply to the power cable receptacle when the power supply is on, or while turning off the Line Switch (Always ON), the shutdown process will not work. This could damage the SSD of the E4990A.
The Microsoft Windows operating system has been modified and optimized by Keysight to improve the performance of the E4990A.
Do NOT install standard version of the Windows operating system on the E4990A.
Do NOT change advanced performance settings or group policies.
Do NOT add or delete any storage drive partitions on the E4990A.
Do NOT delete the Keysight user account.
Do NOT modify any of the Keysight software registry entries.
Do NOT change the settings of Standards and Formats in Regional Options and Languages from default setting (English).
DO NOT change the display property.
The E4990A does NOT have antivirus protection when shipped. Use of an antivirus program is strongly recommended if you connect the E4990A to the LAN (Internet).
In addition, the use of a firewall could help to protect the E4990A from viruses. However, some firewalls could limit DCOM connectivity of the E4990A.
The E4990A is always shipped with the latest service packs and critical updates that were available at the time when firmware is updated. Keysight recommends you to maintain the latest available protection for your E4990A by automatically accepting and installing the latest critical security patches from the Microsoft Windows Update website: http://windowsupdate.microsoft.com
Do NOT modify or delete any Files and Folders in the drives other than D drive. Doing so will result in malfunctioning of the device. It is required to execute the System recovery if there is any trouble with the above operations.
To prevent failure, do not apply DC voltage or current to the UNKNOWN terminals. Special care must be taken with capacitors since they may be charged. Be sure to connect the DUT to the UNKNOWN terminal (or test fixture) only after discharging them sufficiently. The damage level is described in the data sheet.
Do NOT bend, bump or flex any device under test (DUT) connected to the input of the E4990A (such as filters, couplers etc). This will reduce the amount of strain placed on the input connector and the mounting hardware. Make sure externally connected items are properly supported (not freely suspended) from the input.
Do NOT bend cables repeatedly, as this may damage the cables instantly. Limit the number of connections and disconnections to reduce wear and tear. Inspect connectors prior to use; look for dirt, nicks, and other signs of damage or wear. A bad connector can ruin a good connector instantly. Clean dirty connectors to prevent poor electrical connections and damage to the connector. For more information on cable and connector care, refer to http://www.keysight.com/find/cable_care
ESD can damage or destroy electronic components. Whenever possible, conduct testing at a static-safe workstation. Keep static-generating materials at least one meter away from all components. Before connecting any coaxial cable to an analyzer, momentarily short the center and outer conductors of the cable together.
Control your environment. Maintain temperature & humidity with a satisfactory range within the instruments specification and prevent large fluctuations.
Do NOT lift the instrument with your hands at the front panel. If the instrument slips, damage may occur to the keypad, knob, or input connectors. Lift the Instrument by the handles when transporting.
Do NOT use styrene pellets as packaging materials as these may cause damage to E4990A by generating static electricity.
Periodically check and clean the cooling vents of the E4990A. Inadequate airflow can result in excessive operating temperatures which can lead to instrument failures. When installing the product in a cabinet, the convection in and out of the instrument must not be restricted.
See the installation guide for details.
Proper grounding prevents building-up of static charge which may be harmful to the E4990A.
Do NOT defeat the earth-grounding protection by using an extension cable, power cable, or autotransformer without a protective ground conductor.