memory loop

mem·o·ry loop

an electronic device for retrieving data that had been stored and/or displayed on the oscilloscope at an earlier time; used for reviewing electrical events immediately preceding a specific disturbance.
References in periodicals archive ?
Omaha Blues: A Memory Loop By Joseph Lelyveld Farrar, Straus, and Giroux, $22.
In Omaha Blues: A Memory Loop, he certainly buries the lede, but then, that's both the intention and the genius of the book, in which he writes, "History may be linear but memory, at least mine, isn't; it runs in loops.
These services include the supply and monitoring of the transtelephonic heart memory loop monitor, the dual function 24-hour ambulatory blood pressure and halter monitor and pacemaker transmitter.