Source:http://linkedlifedata.com/resource/umls/id/C1458092
UMD: Testers designed to assess the performance of analgesic peripheral nerve electrical stimulators. These testers are typically an electronic unit including instruments to measure current and charge and visual indicators (e.g., LEDs) that display a signal when the current and charge are within therapeutic limits (e.g., 10 mA and 7 to 75 micro Coulombs, respectively); some testers can also include indicators for the presence of therapeutic output and to check lead continuity and alarms for values outside preestablished limits. Transcutaneous analgesic stimulator testers are used for quick checks of new stimulators and during preventive maintenance procedures.