Posts filed under: Measurement

Rigol DS1054Z: 4 Channels 50MHz Digital Oscilloscope

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

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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Sanwa PC510 Battery Replacement with Panasonic 9V Extra Heavy Duty

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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DIY Power Supply Cable with Fuse and Alligator Clips

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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Testing J&K Audio Design Custom Power Transformer

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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Online Triode Loadline Calculator

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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HP (Agilent) 8903B: Audio Analyzer / Distortion Meter

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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HP (Agilent) 5328A: Universal (Frequency) Counter

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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Safe Battery for Your Measurement Device

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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Reviving Old Capacitor in 5 Minutes [Quick Reforming Capacitor Guide]

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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A Troop of Capacitor

For Asus Xonar Essence One modification 😉 Best on the class, perfect on their position....
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Demystifying Asus Xonar Essence One Potentiometer (Volume Control)

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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