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<blockquote data-quote="maylar" data-source="post: 1040046" data-attributes="member: 541144"><p>It's called a VOM... Volt/Ohm/Milliammeter.</p><p></p><p>There's absolutely nothing wrong with analog meters. In fact they're far superior to digital meters when you need to check intermittants or pulsing signals or you just wanna see if a wire is "hot". Digital displays do NOT make an instrument accurate, that's just a perception.</p><p></p><p>First thing to do is zero the needle. Yours is way off to the left. The plastic screw in the clear part of the face will do that.</p><p></p><p>The black lines are for both AC and DC except for the lowest AC scale (10V). There's a slight offset on that scale because of the 0.7 volt loss in the internal rectifier diode.</p><p></p><p>Then check that 9V battery again. 10 VDC scale. A good battery should read close to 9V.</p><p></p><p>For resistance measurements the meter needs a good internal battery. On any of the RX scales short the leads together and use that dial on the side to adjust for zero ohms. It's there to compensate for battery wear. If you can't make the needle go full scale with the leads shorted, the battery needs replacing.</p><p></p><p>I love my Simpson 260. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p></blockquote><p></p>
[QUOTE="maylar, post: 1040046, member: 541144"] It's called a VOM... Volt/Ohm/Milliammeter. There's absolutely nothing wrong with analog meters. In fact they're far superior to digital meters when you need to check intermittants or pulsing signals or you just wanna see if a wire is "hot". Digital displays do NOT make an instrument accurate, that's just a perception. First thing to do is zero the needle. Yours is way off to the left. The plastic screw in the clear part of the face will do that. The black lines are for both AC and DC except for the lowest AC scale (10V). There's a slight offset on that scale because of the 0.7 volt loss in the internal rectifier diode. Then check that 9V battery again. 10 VDC scale. A good battery should read close to 9V. For resistance measurements the meter needs a good internal battery. On any of the RX scales short the leads together and use that dial on the side to adjust for zero ohms. It's there to compensate for battery wear. If you can't make the needle go full scale with the leads shorted, the battery needs replacing. I love my Simpson 260. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]
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