7M11 is a plug-in which contains two independent 50 Ohm analog delay lines with 75nS each. Risetime is specified as max. 175pS and attenuation is fixed at two. A separate trigger output is available to eliminate an external power splitter and it is attenuated by a factor of five. The connections are 50-ohm GR-874.
Max. signal allowed is +-5V. Mass is about 2.5kg, so be careful when sliding it into the slot. Generally Tektronix specifies not to ship mainframes with inserted plug-ins, to protect the bus connectors!
Because it is completely passive and has no bus contacts, it can be operated outside of the mainframe on the desk, giving free an additional slot for another plug-in.