Is it also possible to capture/display longer periods up to several 100msecs?
I think it depends on the signal and how you set up the system. eg for narrowband signals you can capture many seconds of data until you hit the memory limit.
You can also look at signals on the 89600 SW via the LAN interface and this runs continuously although it isn't really capturing all the data although it is still useful in this mode as long as you don't mind missing some data. For many applications this doesn't really matter and you can still demodulate many waveforms in this continuous mode.
I finally got round to swapping the RTC battery over in mine today. It didn't take that long and I needed an excuse to try out a cheapo Worx cordless screwdriver anyway
There are loads of Torx screws to remove and some care is needed when removing both the digital IF, SCSI and the CPU cards.
But it went smoothly and the only tricky bit was pulling out the CPU card as you have to pull quite hard yet you also have to maintain a lot of control in order to keep the card moving slowly (and level) to avoid snag damage. There's a warning label on the rear panel about this and also in the battery replacement instructions.
It's a shame that battery access isn't simpler especially if it only lasts a few years per battery.