Author Topic: 100MHz oscilloscope review  (Read 4081 times)

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Offline wayne

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100MHz oscilloscope review
« on: November 30, 2013, 07:24:26 am »
1.1      Instruments used
 
SIGLENT SDS1102CML
Specifications
Based on the CSV file:
Model Number:                     SDS1102CML
Approx. 450USD on
 
Agilent Technologies DSO6054A
Specifications
500MHz
4Gsa/s
4Msample/ch memory depth
7000USD on ebay.com
 
Agilent Technologies DSO-X 3024A
Specifications
1channle: 4Gsa/s (Interleaved)
2-4channel: 2Gsa/s
200MHz bandwidth
Approx. 3500USD at hu.rs-online.com

1.2      Bandwidth limit
I tested the bandwidth limit by an 1Vpp sine wave at 100MHz. The reference instrument was a Tektronix 500MHz oscilloscope. The display at 10MHz was identical on the two scopes. At 100MHz I measured about 0.7Vpp on the SDS1102CM, while the Tektronix still measured 1Vpp. The bandwidth limit of the SDS1102CML is really 100MHz, and I'm so sure that the bandwidth can be upgraded to 150MHz or more, maybe some hacker had tried.

1.3      Memory depth
The memory depth is 1Mpoints/channel, as it can be seen from the CSV file header. See the spectrum measurements. The point in this test is to analyze that if I stop the acquisition than how detailed information can be seen in the signal by zooming into it.
This is an SPI communication at 8MHz clock. In a 25us/div setting one packet of data does not fill the screen. The packet time (16 byte) is about 32us, so the screen is now about 150 bytes long. (Plus the dead time.)
 
Settings
-          Memory Depth: LongMem
-          Trigger: Normal
« Last Edit: May 26, 2014, 03:03:48 am by wayne »
 

Online tautech

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Re: 100MHz oscilloscope review
« Reply #1 on: November 30, 2013, 08:06:23 am »
Welcome to EEVblog
Can you post hardware and firmware versions of your Siglent.
Have you checked the Siglent site for latest firmware?
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Online tautech

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Re: 100MHz oscilloscope review
« Reply #2 on: December 07, 2013, 07:18:11 pm »
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Offline cseb

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Re: 100MHz oscilloscope review
« Reply #3 on: December 13, 2013, 05:50:48 pm »
Hi Wayne,
Will you copy the whole of my review or do you give the original url?

Hi tautech,
At the given link I can only find the firmware for the CML, not the CM. Have you tested it on an SDS1102CM?

Regards,
Csaba
 

Offline neslekkim

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Re: 100MHz oscilloscope review
« Reply #4 on: December 14, 2013, 12:00:20 am »
Hi Wayne,
Will you copy the whole of my review or do you give the original url?

+1

(found your original review...)
 

Offline wayne

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Re: 100MHz oscilloscope review
« Reply #5 on: May 26, 2014, 03:03:13 am »
1.1      Instruments used
 
SIGLENT SDS1102CML
Specifications
Based on the CSV file:
Model Number:                     SDS1102CML
Approx. 450USD
 
Agilent Technologies DSO6054A
Specifications
500MHz
4Gsa/s
4Msample/ch memory depth
7000USD on ebay.com
 
Agilent Technologies DSO-X 3024A
Specifications
1channle: 4Gsa/s (Interleaved)
2-4channel: 2Gsa/s
200MHz bandwidth
Approx. 3500USD at hu.rs-online.com

1.2      Bandwidth limit
I tested the bandwidth limit by an 1Vpp sine wave at 100MHz. The reference instrument was a Tektronix 500MHz oscilloscope. The display at 10MHz was identical on the two scopes. At 100MHz I measured about 0.7Vpp on the SDS1102CM, while the Tektronix still measured 1Vpp. The bandwidth limit of the SDS1102CML is really 100MHz, and I'm so sure that the bandwidth can be upgraded to 150MHz or more, maybe some hacker had tried.

1.3      Memory depth
The memory depth is 1Mpoints/channel, as it can be seen from the CSV file header. See the spectrum measurements. The point in this test is to analyze that if I stop the acquisition than how detailed information can be seen in the signal by zooming into it.
This is an SPI communication at 8MHz clock. In a 25us/div setting one packet of data does not fill the screen. The packet time (16 byte) is about 32us, so the screen is now about 150 bytes long. (Plus the dead time.)
 
Settings
-          Memory Depth: LongMem
-          Trigger: Normal

 

Offline rf-loop

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Re: 100MHz oscilloscope review
« Reply #6 on: May 26, 2014, 05:12:10 am »
Here is typical SDS1102CML frequency response. (from old lab test)
And I have tested several of these. This is not best individual unit, this is more like worst case.



More

Btw, Models with small screen (as your image), example SDS1102CM is totally obsolete model.  Ancient 5.7" screen models production have stopped long time ago by Siglent.
« Last Edit: May 26, 2014, 05:16:05 am by rf-loop »
If practice and theory is not equal it tells that used application of theory  is wrong or the theory itself is wrong.
It is much easier to think an apple fall to the ground than to think that the earth and the apple will begin to move toward each other and collide.
 


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