| Products > Test Equipment |
| Sniffing the Rigol's internal I2C bus |
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| Rigol-Friend:
--- Quote from: PA0PBZ on December 25, 2013, 09:50:59 pm ---is the switchable 50 ohm input --- End quote --- Bad idea: Quick and dirty you can have 50 ohm impedance by activating the relay for the 50 ohm resistor with a mechanical switch. If your hardware is version 2, relay and resistor are build in. That will be not elegant, but will work, I think. |
| m-joy:
I cant understand whats so special about the 50 ohm impedanz. You can easily get a T-connnector with 50ohm Terminator so whats the point. |
| Gallymimus:
--- Quote from: m-joy on December 25, 2013, 11:23:09 pm ---I cant understand whats so special about the 50 ohm impedanz. You can easily get a T-connnector with 50ohm Terminator so whats the point. --- End quote --- It's a lot more convenient than using an external adapter, why are you trolling? |
| Wim13:
--- Quote from: m-joy on December 25, 2013, 11:23:09 pm ---I cant understand whats so special about the 50 ohm impedanz. You can easily get a T-connnector with 50ohm Terminator so whats the point. --- End quote --- There is a very big difference, if you terminate directly on the chip entry, or on the BNC connector, gives a lot of impedance changes. |
| Wim13:
--- Quote from: alank2 on December 25, 2013, 04:19:44 pm --- Can you expand on this a bit? What was not stable? --- End quote --- You can see on 1 nsec the DS2000 hw version 1.01.1 has difficulties display the correct waves, it also differs when you switch two channels on, the signals changes...so not reliable. DS2000 old version where never designed to work behind 200 Mhz. The hardware had to be modified, as they did on later models. |
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