Posts filed under: Measurement

Rigol has launched new economic digital oscilloscope, Rigol 1054Z. Although considered as economic oscilloscope, but the specification is not that economic. Rigol equips this machine with 4 channels capability and 50 MHz bandwidth. With 1GSa/s Real-time Sample Rate, maybe a bit...
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HP Agilent 3561A Dynamic Signal Analyzer. Finally I managed to secure this interesting device. But unfortunately, shit happens! The unit came ok from outer physical appearance, but inside, seemed like someone has smacked this unit down. I saw some cracks...
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Do you realize that your measurement device also need a battery replacement? Some might not aware about this. Not only your digital device, but also your analog “needle” based measurement device. They do need battery replacement. I bought this Sanwa...
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I’m not quite sure if the title above is correct, but I just can’t figure out something better. Basically, when you are doing DIY, then you will play a lot in breadboard or something that’s not in proper or neat...
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Due to shortage of some materials, my custom transformers were delayed a bit. I haven’t got chance to arrange the pickup yet, so I ask Ken to give a quick test of the unloaded voltage. I know the best scenario is...
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There is an interesting website which allows us to simulate the triode loadline, or in other words: Triode Loadline Calculator. The link is here. You can easily drag-and-drop the curver inside the chart to simulate the impact on other parameters....
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This is one of the measurement device that has been on my list for a while, it’s HP/Agilent 8903B distortion meter (well, Tektronix AA501 is also on my list). It’s a solid unit with combination of low distortion oscillator and...
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In order to have better view (and better understanding) of how stuff works, especially in audio, I need to have more testing equipments. Unfortunately, those are quite expensive for a person who is doing this as hobby – like me....
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It’s time to replace battery on some of my measurement device. And surprisingly, it’s not easy to find good (and safe) replacement. For some of you who never (I hope really-really never) got problem with battery, probably you will not...
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If you have a bunch of capacitors on the shelf, surely you will even face this. Once upon a time, I plan to use my old capacitor (we are talking several ‘few’ years, not 15 or 20 years or so)....
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For Asus Xonar Essence One modification 😉 Best on the class, perfect on their position....
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Asus Xonar Essence One uses a ribbon cable to connect the stage before the final buffer output to potentiometer then brings back the attenuated signal back to the buffer output stage. This is no where a best approach, as the...
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