Products > Test Equipment
Siglent SDS1104X-E vs. Rigol DS1054Z Advice?
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tautech:

--- Quote from: KungFuJosh on August 21, 2018, 09:32:27 pm ---Uh oh. I might have found something useful in the SDS1104X-E's favor. It looks like that can handle 400VDC input according to the datasheet, and the Rigol only 300VDC. Am I reading that right?

Assuming I'm reading that right, that might be useful. Or should I be more interested in a differential scope for that voltage level? A few spots on my amps go above 300, usually not above 350 for most circuits I build. I dunno if I'd ever connect there, but, ya know...or never know.

--- End quote ---
The risk is if you should mistakenly use the probe on a 1:1 setting. Hence my mention earlier that some prefer fixed attenuation probes.
However when we go probing HV we should always double, er no...... triple check our setup.
KungFuJosh:

--- Quote from: tautech on August 21, 2018, 09:39:45 pm ---The risk is if you should mistakenly use the probe on a 1:1 setting. Hence my mention earlier that some prefer fixed attenuation probes.
However when we go probing HV we should always double, er no...... triple check our setup.

--- End quote ---

A piece of tape can make a probe fixed attenuation. ;)
Fungus:

--- Quote from: KungFuJosh on August 21, 2018, 09:32:27 pm ---Uh oh. I might have found something useful in the SDS1104X-E's favor. It looks like that can handle 400VDC input according to the datasheet, and the Rigol only 300VDC. Am I reading that right?

--- End quote ---

Yes, but... that's the raw input. You'll normally be using a 10x probe so the input can be up to 3000V.

(and you should be using special probes long before you get that high - the Rigol supplied probes aren't rated for that sort of voltage).


--- Quote from: tautech on August 21, 2018, 09:39:45 pm ---The risk is if you should mistakenly use the probe on a 1:1 setting. Hence my mention earlier that some prefer fixed attenuation probes.

--- End quote ---

Yep. If you work on anything over 100V it's definitely a good idea to get a couple of fixed 10x probes for daily use to avoid accidents - you hardly ever need the 1x setting anyway (in fact I don't think I've ever used it).


Fungus:

--- Quote from: KungFuJosh on August 21, 2018, 10:05:37 pm ---
--- Quote from: tautech on August 21, 2018, 09:39:45 pm ---when we go probing HV we should always double, er no...... triple check our setup.

--- End quote ---

A piece of tape can make a probe fixed attenuation. ;)

--- End quote ---

Or some hot glue.

tautech:

--- Quote from: KungFuJosh on August 21, 2018, 10:05:37 pm ---
--- Quote from: tautech on August 21, 2018, 09:39:45 pm ---The risk is if you should mistakenly use the probe on a 1:1 setting. Hence my mention earlier that some prefer fixed attenuation probes.
However when we go probing HV we should always double, er no...... triple check our setup.

--- End quote ---

A piece of tape can make a probe fixed attenuation. ;)

--- End quote ---
Rather, for the instrument and my safety I use a 100:1 probe on anything over ~150V.
Remember most switchable probes in 1:1 mode are only rated to 300V and normally to 600V in 10:1 mode.

I prefer a higher safety margin especially when probing high energy sources like something that controls mains power.
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