- Fix incorrect analog bargraph indication

- Fix incorrect ACuA level compensation at 20 kHZ and above

- Fix incorrect MAXMIN display, when changing from AC to DC mode, or vice versa

- Fix incorrect MAXMIN display, when changing from LOCK range to AUTO range, or vice versa

- Fix incorrect AUTO HOLD display at HZ measurement

- Fix incorrect range changes in AUTO HOLD

- Fix for MAXMIN feature to restart, when changing from LOCK range to AUTO range, or vice versa

- Fix display update rate

- Fix incorrect LOG view in setup mode setting

- Fix incorrect APO mode when PEAK HOLD is enabled

- Fix incorrect LOG view range display in PERCmA

- Fix incorrect OL flag check for mS, add variable pulse width range and one duty range

How to Install:

- Connect the multimeter to your PC via the U1173B IR-USB connectivity cable and turn on the multimeter.

- Go to Start > All Programs > Keysight Technologies > Keysight U1253B Firmware Update > Keysight U1253B Firmware Update Software (Version 3.04).

- Click "Auto Search COM Port" button to search and detect the unit. The model number, serial number and current firmware version of the multimeter will be displayed in the "Model Number", "Serial Number" and "Current Version" field.

- Make sure the instrument is in connected status before you start firmware update. Click “Upload Firmware” to start firmware update.

- The multimeter will reset and recover itself after the firmware update.

About Device Firmware:

Applying a newer firmware version than the one already installed on your unit can bring various enhancements, include workarounds for diverse problems encountered by the device, and improve or add newly developed features.

On the other hand, downgrading the firmware version can ...