as
I've been quoted $700, guaranteed good, from a dealer recently. Even if one channel is zapped, $103 is good.
If it's totally dead, it's usually a bad eeprom. We can fix that. Otherwise, it's unfixable.
I often use the TDR channel as a pulse generator/trigger, and sample off the other one.
I'm just
What's the setup? Pulse generator driving laser diode and triggering the scope?