The Model 863 is shipped with this jumper in the Out position. The Model 863 is shipped with this jumper in the Noninvert position. Input impedance is 100 W , protected to 6 V. Front-panel LEMO connector. Delay line clip is two times the cable propagation delay. Gain is reduced by a factor of two when using the cable clip.
Output is dc-coupled and controlled by a continuous baseline restorer.