[Models Supported] All the RIGOL DHO800/DHO900 series oscilloscopes [Latest Revision Date] 2026/01/20 [Updated Contents] v00.01.05.00.01 2026/01/20 - Optimized the Bode plot curve. - Fixed the issue where cursors cannot be set in FFT mode. v00.01.05.00.00 2025/11/25 - Added user-defined probe ratio setting. - Optimized AFG frequency display, highlighting the display. - Added the Move Scale sub-menu under the Display menu. - Added the Peak Detect on/off sub-menu under the Save tab in the Storage menu, allowing users to select whether to enable or disable peak detection while saving the waveforms. - Added the Display Area sub-menu under Math menu, allowing you to select whether to display math waveforms in the main window or math operation window. - Added the function of switching the screenshot preview. - Added the function of exporting LA (Logic Analyzer) waveform memory data. - Added saving images in different formats. - Fixed an occasional issue where certain horizontal measurement items failed to measure. - Fixed an issue where the UI did not synchronize with the probe ratio unit setting command. - Fixed the system reboot issue caused by running in the ZOOM mode for a long period. v00.01.04.00.02 2024/11/1 - Resolved the issue where no waveform was displayed when the instrument was not calibrated. v00.01.04.00.01 2024/10/15 - Resolved the issue where no waveform was displayed in Roll mode when XY is enabled. - Resolved the issue where no waveform was displayed in XY mode after performing the Default operation. - Resolved the issue where errors occurred for trigger and decode thresholds when vertical unit is set to V and a probe ratio is set. - Resolved the issue where the UI menu label box of one of the menu labels displayed on the screen seems smaller than other label boxes of the menu after performing the AUTO operation. - Resolved the issue where the MATH scale failed to update automatically after setting the probe ratio in V/A. - Resolved the waveform disappearance issue. - Resolved the issue where statisitcs is performed only once under 50 ms time base. - Resolved the issue where system crash occured when modifying the source of All Measure under zoomed time base in measurement settings. - Resolved the issue of invalid setting of screen grid. - Resolved the issue where the waveform was displayed incompletely when entering the slow sweep mode by adjusting the time base with XY mode enabled. - Resolved the system crash issue after enabling all measurements and performing Default operation in slow sweep mode. - Resolved the abnormal horizontal offset issue when switching from Roll mode to slow sweep at 200 ms horizontal time base. - Resolved the issue where the waveforms were not updated when switching from CH1 to CH2 in slow sweep mode. - Resolved the abnormal color of options in "Source" and "Modify All Measurement Sources" in measurement settings. - Resolved the issue where channels were not enabled automatically when modifying the source of All measurement. - Resolved the issue where the waveforms were not refreshed when performing RUN and STOP operations for multiple times in slow sweep mode. - Improved self-calibration pass rate. - Added build time, WPU, and SPU.A to the readback information of the *IDN? command for the engineering mode. v00.01.04.00.00 2024/09/13 - Resolved the issue where MATH vertical scale was not an integer, and the offset was not 0. - Resolved the issue where the FFT unit in MATH is dbm/dbV, but displayed in dbV. - Added new model DHO824. - Added the memory depth option 50M for the new model DHO824 - Resolved the issue where the probe ratio is displayed as V/A when the vertical scale unit is set to A. - Resolved the issue where the XY mode failed to be enabled. - Fixed the waveform display abnormal issues concerning the DHO800/900 series oscilloscope other than DHO824. v00.01.03.00.04 2024/07/11 - Resolved the problem of vertical scale adjustment. - Resolved the problem where the command was failed when saving the screen waveforms in "*.csv" format in the Math filter operation. - Added 5M memory depth option for the DHO800 series. - Resolved the issue where CH4 trigger status was not recalled properly when loading the last value. - Added the screen brightness adjustment function. - Resolved the issue where Auto operation was failed at 2X scale and above when the instrument was self-checking the Square wave. - Resolved the problem of eliminating glitches in adjusting the time base waveform during waveform recording and playback. - Supported modifying measurement items after enabling the measurement. - Added SMB network storage function. - Resolved the problem of SPI decoding failure in digital channels. - Resolved the AX and BX tracking problem when the time base was changed in Track mode of cursor measurement. - Resolved the issue where inputting 2 Hz triangular wave was triggered unstablely at 100 ms time base in non-roll mode. - Resolved the issue of inconsistency in resolution on the Web control and UI. - Added quick start and shut-down of the instrument. - Resolved the problem where Video trigger failed to work normally. - Resolved the problem where RS232 trigger was not being able to be initiated at a low baud rate. - Resolved multilingual translation errors. v00.01.02.00.02 2023/12/28 - Optimized self-calibration. - Resolved the problem where window transparency failed to load the last value. - Resolved the problem where the LA label failed to be displayed after setting the LA label. - OPT_AUTO option was provided for the DHO800 series. - Modified the License module and the old option generation was invalid. You need to use the new option generation DLL and EXE to generate options and KEY. v00.01.02.00.01 2023/12/5 - Optimzed the self-calibration. - Resolved the issue of edge jitter below 31 kHz for the Square waveform. v00.01.02.00.00 2023/11/2 - Optimzed the self-calibration. - Resolved the problem of UltraLab startup connection failure. - Resolved the problem of failing to save the waveforms in "*.wfm" format. - Added equivalent settings for the education model. - Resolved the problem where touch screen operation failed to work at start-up. v00.01.01.00.02 2023/09/12 - Optimzed the self-calibration. - Updated the help documentation. v00.01.01.00.01 2023/08/10 - Removed all time-related display information of the instrument. - Fixed the problem of modifying the AC coupling by clicking or tapping the connection diagram. - Modified "Zoom" menu name from English to Chinese (延迟扫描) in the Chinese language menu. - Modified the order of the menu in the upper-right corner of the screen, putting Measure ahead of Default menu. - Removed the Probe Ratio interface, and put Probe Ratio as a sub-menu item under the Vertical menu. v00.01.00.00.19 2023/07/24 - Released the first version.