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 ?
An ILR, roughly the size of a memory stick, continuously records a patient's ECG onto a memory loop of about 20 minutes.
Omaha Blues: A Memory Loop By Joseph Lelyveld Farrar, Straus, and Giroux, $22.
The larger of the two has nine illuminated push buttons which activate the pod's set-on receiver, frequency memory loop and transmitter.
KOR DRFMs can substantially enhance existing ECM system performance by replacing bulk delay lines, set-on VCOs, barrage noise generators, serrodyne modulators and frequency memory loops.