Yes, indeed a direct copy. I have owned an Agilent Infiniium 54832D for a long time and it works differently, the image is much cleaner.
I already managed to disassemble this LeCroy a little. I noticed that cheap SMD aluminum capacitors are used on all boards (tantalum capacitors are everywhere in Agilent, except for the processor board and power supply), I noticed that a couple of capacitors have already swollen on the processor board (they are high quality, but worn out).
Either it works like that at all, or the capacitors have degraded, but our oscilloscopes have an identical picture. Weird...
By the way, since you own your LeCroy for a long time. Have you upgraded the processor, memory and SSD yet? I noticed that the motherboard is made on the basis of VIA CLE266, which means that we can install Tualatin-S (512K cache!!) up to 1.4GHz, which is much better than the regular Celeron Coppermine 850MHz. I also have 512MB of memory installed, but the motherboard must support up to 2GB.
Have you done any other upgrades? Maybe you can unlock some options, update software, BIOS or something else?
I don't understand what can be configured...