If the photograph is clicked, it grows.

HP 54120T DC-20GHz 4ch TDR Digitizing Oscilloscope
SOLD OUT sold
osc2424

CH3,Ch4 Selftest NG Level too High

Bandeidth:DC-20GHz,(Ch1 DC-18GHz),Transition Time:<17.5ps(Ch1 <19.4ps),Maximum Noise:<2mV
Input 3.5mm(m) 50ohms 1mV/div - 80mV/div ,Trr 30ps DC Accuracy Signal Voltage Marker;Avarage mode:+-0.4% of full-scale or marker reading +-2mV
Persistence mode:+-0.4% of full-scale or marker reading +-2mV,Progrummable DC offset:+-500mV,
Input;Number:4,Dynamic Range:+-320mV relative to channel offset,Nominal
TDR
Rise time:<45ps,Flatness:<+-1% after 1ns from edge;<+-5%-2% to 1ns from edge,Levels;Low:0V+-2mV,High:+200mV+-2mV,
Trigger Level Range:+-1V,Jitter:<2.5ps+5E+5x,
Trigger Input;
Maxmum Input Voltage:+-2Vdc+ac peak(16dBm)
Impedance:50ohm,Percent Reflection;<10% for 100ps risetime,Connector:3.5mm(m)
Sweep
10ps/div- 1s/div Delay 16ns-10s acc10ps

54120B+54121A
Interface Flat Cable