Found this on Siglent forum:
http://siglent.freeforums.org/sds1000cfl-cml-cnl-dl-models-main-features-t75.html--------------------- start -------------------------
Siglent name this serie as SDS1000L (there was OLD SDS1000 serie also but this serie is totally obsolete and manufacturing finally stopped around 1Q2013)
First, all these have 7" TFT, this is common for whole SDS1000L serie.
Models, freq, max samplerate, max memory, Channels
SDS1022DL 25MHz, 500MSa/s, 32k, 2Ch
SDS1052DL 50MHz, 500MSa/s, 32k, 2Ch
SDS1102DL 100MHz, 500MSa/s, 32k, 2Ch
SDS1202DL 200MHz, 500MSa/s, 32k, 2Ch
SDS1072CNL 70MHz, 1GSa/s, 40k, 2Ch
SDS1102CNL 100MHz, 1GSa/s, 40k, 2Ch
SDS1202CNL 200MHz, 1GSa/s, 5k, 2Ch (both channels 1GSa/s) *) (old?)
SDS1202CNL+ 200MHz, 2GSa/s, ?, 2Ch (both channels 1GSa/s) *) (new?)
*) lack of information or can not be exactly sure
SDS1072CML 70MHz, 1GSa/s, 2M, 2Ch
SDS1102CML 100MHz, 1GSa/s, 2M, 2Ch
SDS1152CML 150MHz, 1GSa/s, 2M, 2Ch
SDS1072CFL 70MHz, 2GSa/s, 24k, 2Ch
SDS1102CFL 100MHz, 2GSa/s, 24k, 2Ch
SDS1202CFL 200MHz, 2GSa/s, 24k, 2Ch*
SDS1302CFL 300MHz, 2GSa/s, 24k, 2Ch*
SDS1074CFL 70MHz, 2GSa/s, 24k, 4Ch
SDS1104CFL 100MHz, 2GSa/s, 24k, 4Ch
SDS1204CFL 200MHz, 2GSa/s, 24k, 4Ch*
SDS1304CFL 300MHz, 2GSa/s, 24k, 4Ch*
*1M/50ohm inputs
DL modelsI do not explain more deep becouse 500MSa/s max and CNL model is nearly same price. Sampling speed max is 500MSa/s for single channel and 250MSa/s for two channels.
CNL modelsFirst, they are just as CML exept 2M "LongMemory"
All other things same. (just as use CML with normal memory)
EXEPTION: 200MHz SDS1202CNL is special exeption in CNL serie.
+ have also 50ohm inputs.
- capturing memory: 5k separately for both channels (5k and 5k)
+ max 1GSa/s separately for both channels
- no 6M recorder.
± input offset voltage setting limits 2mV-100mV: ±800mV, 102mV-10V: ±40V)
There is so far lack of information about SDS1202CNL+ model. But what I have it looks like it is mostly same but some advantage in samplerate.
CML modelsCML models have max 1GSa/s for single channel and max 500MSa/s for two channels if normal memory is in use. Equivalent sampling rate ("EqualTime" mode) is max 50GSa/s for repetitive signals. In this mode long memory not in use.
Normal memory: (full speed memory)
40k for 1GSa speeds if single channel use, for 500MSa or lower speeds memory is always 20k per channel.
Long memory: (half speed memory)
2M for single channel and 1+1M for two channels in use.
For single channel max speed is 500MSa/s
Vertical inputs:
1Mohm ±2%, 16pF±3pF
Maximum Input voltage: 400V ?DC+AC PK-PK?1M? input impedance?
X10??CAT I
Vertical system:
Sensitivity:2mV - 10V (1-2-5 steps + fine adjust steps)
(2mV BW limit 20MHz)
Offset voltage setting limits:
±1.6V: inputs range 2mV –200mV
±40V: inputs range 206mV - 10V
Ch to Ch isolation better than 100:1 (channels level setting equal)
Horizontal speed:
70MHz models 5ns/div - 50s/div 100 and 150MHz models 2.5ns/div - 50s/div
If Trigger is in ALT mode: It have also dual timebase! This feature is very rare.
It means that both channels timebase can separately adjust: Example you are looking two signals example 1kHz and 50MHz. You can adjust other channel for example 250us/div and other channel example for 10ns/div. Both channels trigger settings can adjust also independently in this mode.
From 50ms/div and faster there can use Frame Record. It can record up to 2500 frames (TFT screen area frames) amount and interval is selectable. Playback mode and speed is also selectable.
Scan (roll) mode can use between 100ms/div - 50s/div.
In this mode there is available 6M recorder. It record capturing without breaks, continuously.
With low speeds in this mode, recorder can also use USB flash disk for more long capturing.
(I do not know exact speed where it works sure, it may depend also USB stick model)
Horizontal speed setting steps 1 - 2.5 - 5 (no fine adjust between these steps)
Maximum sampling speed (1GSa single channel or 500MSa/s double channel is available if horizontal speed is 50ns/div or faster.
Trigger settings have quite rich of features, Of course normal modes: Auto, Normal, ALT, Video.
Also source can be of course CH1, CH2 or EXT trig input or AC line (internal).
There is so much details in trigger settings, they are best to read from available user manual.
DL/CNL/CML have mostly all same.
Math: All models have normal +,-,/,*, FFT
Result vertical scale is adjustable.
FFT system use 1024 sampling point, so base resolution is 512.
FFT is related to sampling speed. If sampling speed is example 100MSa/s then full span is 50MHz (0-50MHz) this can zoom by 1, 2, 5 and 10x and zoomed area can horizontally adjust inside this used full span. Resolution is same as full span resolution.
FFT is windowed. Upper window it show normal time base and lower window FFT or full screen so that FFT is overlay time base signal.
More accurate FFT can of course do with external third parties PC softwares.
(scope can store waveform directly common CSV format and example matlab can read it)
It can store long memory or normal memory using CSV or waveform as DAV to internal or external memory and of course it can store screen picture to USB.
Stored waveform can recall back to oscilloscope example from USB and it is just as captured single shot and with it can measure, zoom etc just as with all single shotted waveforms.
There is PASS/FAIL also.
You build "mask" and then you can select what to do if signal is not inside mask.
It counts pass/fails event. Result can also produce signal to pass/fail output.
Today new versions have also command interface with SCPI commands.
It need National Instruments NI-VISA drivers.
Commands descriptions can find in SDS1000 Programming manual.
USB port (backside of scope) can set for direct print mode (and you can print directly using PictBridge compatible printers). There is not anymore setting "Computer", its name is now USBTMC. This is for use with computer. (If there is this setting, use EasyScopeX, If there is "Computer" you need use EasyScope 3 or compoatible and afaik, there is no SCPI support)
In main features / user interface is same for DL/CNL/CML versions.
Differencies are small. Main differencies are memory, samplerate(DL) and model related frequency bandwidth. (and SDS1202CNL many exeptions)
CFL modelsThese are some amount different (and more expensive) but most of functions same.
oscilloscope width is more. 2 channel models are also full width. Sampling speeds max in all models 2GSa/s. Memory in all modeld 24k for 2 channel group.
Sample rate is also 2GSa/s max for 2 channel group.
It means:
2Channel model: 2GSa/s for 1 channel and 1GSa for both channels in use.
4Channel model: it works as there is 2 pcs 2channel models for sampling speed.
(Not confirmed officially or by my own tests (but it looks like this is how it works):
Ch1 in use CH2 off: 2GSa/s + Ch3 in use Ch4 off: 2GSa/s
CH1 and 2 in use : 1GSa/s both + Ch4 in use, Ch3 off, 2GSa/s
All channels in use, all have 1GSa/s)
+ 200 and 300MHz models have also 50ohm inputs.
+ CFL models have also LAN as default
+ CFL models also have real time clock.
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