Better make separate grounding for laser. I don't know how it possible in Sweden, but in Lithuania we have copper bus in each electrical distribution panel (in office, home and etc). If you have laser in some kind of industrial building - copper band schould be inside wall - usually 45 cm from floor (but not sure that this is international standart - work in many countries well).
Firmware is programm which is inside your motherboard. On GCC lasers you can upgrade/re-write firmware from your PC. I expect that this feature schould be in your laser also. |