The 1123A Active Probe is used for probing high source impedances at high frequencies. The probe should be used to apply input signals to the 1802A 100MHz plug-in. This X1 active probe has very low drift and noise and provides an input RC of 100 kohms and only 3.5 pF.
Bandwidth: DC to > 220MHz (3 dB down)
Gain is adjustable to X1 into 50-ohm load
Output of ? 0.5 V peak
Maximum input of ? 50 V (DC + peak AC)
Output impedance of 50-ohms