If the photograph is clicked, it grows.

10Hz-200KHz Sensitivity 1uV-1000mV 19 Range BNC(f) 1uV 2uV 5uV 10uV....full scale Manual Tune Filter 10Hz-200KHz Variable Time Constant 1ms-30sec 10 Range EXT C EXT C (rear panel) C=0.2T C(uF) T(sec) Meter : Sig ,REF ,Mixer ,Output Phase 0-+180deg 0--180deg Zero offset +- Ref Input BNC(f) Cal output 1mV BNC(f)