When testing sequential-logic circuits, you may find that, although the repetition frequency of a logic signal is within the range of your DMM (digital multimeter), you can’t measure it. The displayed ...
Each model has a GS-Mark EN61010-1 Approval, Over-Voltage Category II 600 Vdc/Vac; Pollution Degree. Models: HHM26 and HHM28 have RS-232 Interface. Logic Probe Tester Models are HHM15, HHM20, HHM23.