Dual input oscilloscope Vertical Frequency response DC coupled: Excluding probes and test leads: DC to 20 MHz (-3 dB) With STL120 1:1 shielded test leads: DC to 12.5 MHz (-3 dB) DC to 20 MHz (-6 dB) With PM 8918 10:1 probe (optional accessory): DC to 20 MHz (-3 dB) AC coupled (LF roll off) Excluding probes and test leads: <10 Hz (-3 dB) With STL120: <10 Hz (-3 dB) With PM 8918: <1 Hz (-3 dB) Rise time Excluding probes and test leads: <17.5 ns Input impedance Excluding probes and test leads: 1 MW//12 pF With BB120: 1 MW//20 pF With STL120: 1 MW//225 pF With PM 8918: 10 MW//15 pF Sensitivity: 5 mV to 500V/div Display modes: A, -A, B, -B Max input voltage A, B: 600V rms up to 200 kHz, derating to 6V rms @ 20 MHz Max floating voltage From any terminal to ground: 600V rms up to 400 Hz Resolution: 8 bit Vertical accuracy: ±(1% of reading + 0.05 range/div) Max vertical move: ±4 divisions Horizontal Acquisition modes Normal: Equivalent sampling: 20 ns to 500 ns/div; real time sampling: 1 ms to 5s/div Single (real time): 1 ms to 5s/div Roll (real time): 1s to 60s/div Sampling rate (for both channels simultaneously): For repetitive signals (equivalent sampling) up to 1.25 GS/s; real time (normal and single): 1 ms to 5 ms/div, 25 MS/s; 10 ms to 5s/div, 5 MS/s Time base accuracy Equivalent sampling: ±(0.4% of reading +0.04 time/div) Real time sampling: ±(0.1% of reading +0.04 time/div) Glitch detection: ³40 ns @ 20 ns to 5 ms/div; ³200 ns @ 10 ms to 5s/div Glitch detection is always active Horizontal move, 10 divisions. Permits shifting of the display from 0 to 10 division of pre-trigger. Trigger point will always be visible.