- SR555 - Stanford Research Systems

sr555View and Download SR Instruments SR Scales SR555i operating and service manual on. Stand-On Scale System. SR Scales SR555i scales pdf manual download.SR555 Current Preamplifier. 10 VµA gain; 120 kHz (-3 dB) bandwidth; SR556 Current Preamplifier. 5 fA√Hz input noise; 1 VnA gain; SR556 Current Preamplifier. 5 fA√Hz input