| 摘要 |
<p>A digital multimeter (10) includes a display (120) for displaying a measured parameter, a selector (100) for selecting the measured parameter, at least one jack (150) configured to receive a test lead plug, and a housing assembly including the display, the selector and the jack. The selector includes a push button (140), a rotary selector switch (130), a knob coupled to the rotary selector switch, and a cover (136) molded over the knob. The cover includes a relatively soft material compared to the knob. The housing assembly includes a first and second housing portions (162,164) coupled together, a gasket sealing the first and second housing portions, and a jacket (200) overlying parts of the first and second housing portions and the gasket. The housing assembly defines an internal cavity and is configured to absorb impact energy in response to dropping the digital multimeter up to approximately one metre and protect against water and dust ingress into the cavity.</p> |
