I just received my new DS1054Z an hour ago.
Three of the four probe clip hoods were defective (just empty plastic shells).
I chatted with TEquipment, who called Rigol during the chat, and was told that Rigol will ship me replacements. :|
Not a great start, but I am still hoping everything else is fine.
also the rings come with spares but I'm missing one color
also the rings come with spares but I'm missing one color
With both sets of 2, you should have gotten 4 of each color but only need 2 of each color...
by the way, I noticed on the startup display that the 'installed features' have a trial duration that expires after around 35 hours.....if I do not 'hack' the scope, will all these features go away?
Just to confirm that my upgraded DS1054 has a measured bandwidth of ~130 MHz, confirmed both by using a leveled signal generator (looking for the -3 dB point), and a pulse generator with a 70 ps risetime.
Just to confirm that my upgraded DS1054Z has a measured bandwidth of ~130 MHz, confirmed both by using a leveled signal generator (looking for the -3 dB point), and a pulse generator with a 70 ps risetime. On the system info screen the system software is 00.04.01.SP2, the board version is 0.1.1, and the model is shown as a DS1104Z.
The actual -3 dB point is about 133 MHz using a leveled signal generator. The scope measures the rise time of the pulse generator as 3.3 ns, so I guess the final answer for the bandwidth depends on whether you use the "traditional" 0.35/(rise time) formula, or if you use the 0.4 to 0.5/(rise time) formula for digital scopes shown in Agilent's (oops, I mean Keysight's) Application Note 1420 "Understanding Oscilloscope Frequency Response and Its Effect on Rise-Time Accuracy." Either way, the bandwidth is plenty high for my needs!
It seems that you both have access to good signal generators and know how to use them. I would be interested in the response of an unhacked DS1054Z. As Fungus asked, it would also be interesting to know the measured effect on bandwidth of having 2 or 4 channels configured.
Has anybody seen / heard anything regarding when TEquipment will have these back in stock?
Just to confirm that my upgraded DS1054Z has a measured bandwidth of ~130 MHz, confirmed both by using a leveled signal generator (looking for the -3 dB point), and a pulse generator with a 70 ps risetime. On the system info screen the system software is 00.04.01.SP2, the board version is 0.1.1, and the model is shown as a DS1104Z.
What did it have before?
What does if have with different numbers of channels enabled?
Before the "upgrade" I measured the bandwidth as almost exactly 50 MHz with a sharp rolloff above 50 MHz, consistent with bandwidth limiting in software.
There is no real difference in the bandwidth with multiple channels enabled (see the next paragraph), however, the sample rate drops to 500 MSa/s with two channels enabled, and to 250 MSa/s with three or four channels enabled. The memory depth drops from 24 MSa with one channel to 12 MSa/channel with two channels, and down to 6 MSa/channel with three or four channels enabled.
Because of the slower maximum sample rate with multiple channels enabled, there will be some waveform distortion due to undersampling at the highest sweep speeds. For example, at 5 ns/div a 250 MSa/s sample rate gives only slightly more than one sample per division, so fast waveforms can become very distorted. Changing the acquisition mode to Hi Res or Peak has no particular effect, nor would I expect any, since the samplers are already at their maximum speed. Averaging definitely smooths the waveform, but then there's no way to tell just by looking at it that there's an undersampling problem.
BTW, the risetime of a 70 ps risetime pulse generator as measured by the DS1054Z actually appeared to improve by going from one channel to two channels enabled. That was just an artifact, because the slower sample rate missed some roundoff in the leading edge so the reconstruction by the sin(x)/x interpolator made the edge look faster. Enabling three or four channels slowed the risetime measurement due distortion of the leading edge caused by undersampling.
Has anybody seen / heard anything regarding when TEquipment will have these back in stock?
Start a quick chat with them, it is easy and they'll let you know!
I'm wondering if the waveform generator from the DS1000Z-S versions can be added by adding the two bnc connectors.
Here's a teardown video of a DS1000Z -> http://youtu.be/xMPPuAOoD8c?t=1m15s
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What about the Source button on the front panel?
I'm wondering if the waveform generator from the DS1000Z-S versions can be added by adding the two bnc connectors.
Here's a teardown video of a DS1000Z -> http://youtu.be/xMPPuAOoD8c?t=1m15s
The actual -3 dB point is about 133 MHz using a leveled signal generator.