Some say this scope is "noisy". Is it useful for measurements where the range is +/- 20 mV?

its noisy in the fact the fans arent quite. Not because of line noise... 20mv is not a problem

Does this item include the optional items(16ch logic decoder, usb awg and usb wifi)?

For WiFi you can use an Access Point that can be operated in "Client Mode". I am using a TP-Link N300 (WR802N) and it works very well. The other options really seem to require special firmware/license upgrades.

Is siglent sds1104x-e good for a beginner?

The SDS 1104X-E is a great scope. It is considered an entry level instrument. It is excellent for the individual entering the electronics field.

Can I decode ic, spi, uart/Rs232, can, lin signals with the the scope, i.e. without the sla1016 module?

Yes! Decoding is included with the base model! There is no need to purchase a software license (or "hack" the scope) to unlock the decoding options.

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Siglent Technologies SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard Decoder, Grey

Siglent Technologies SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard Decoder, Grey

Product ID: 66310340

Details

Brand
Siglent
Color
Grey
Item Weight
6.6 Pounds
Power Source
Us
Style
Decoder

🌐Ethernet & remote web control

📊100MHz bandwidth

🔄400,000 frames/sec waveform capture

Description

⚡ Unlock pro-level oscilloscope power without breaking the bank!

SEAMLESS REMOTE ACCESS - Control and monitor your oscilloscope from anywhere via embedded web server and Ethernet connectivity—perfect for hybrid workflows.
BLAZING FAST WAVEFORM CAPTURE - Never miss a detail with a 400,000 frames/sec sequence mode that captures transient events in real-time.
PRO GRADE 4 CHANNEL PRECISION - Experience ultra-clear signal fidelity with 100MHz bandwidth and 4 simultaneous channels for complex diagnostics.
NEXT LEVEL SERIAL BUS DECODING - Built-in I2C, SPI, UART, CAN, and LIN decoders unlock deep protocol insights without extra cost or hassle.
ADVANCED FFT HISTORY RECORDING - Analyze frequency spectra with 1 million point FFT and revisit past waveforms with history recording for thorough troubleshooting.

The Siglent SDS1104X-E is a 100MHz, 4-channel digital oscilloscope featuring advanced SPO technology for superior signal clarity and low noise. It offers ultra-fast 400,000 frames/sec waveform capture, comprehensive serial bus decoding (I2C, SPI, UART, CAN, LIN), and remote control via Ethernet. With 1 million point FFT, history waveform recording, and optional MSO and AWG modules, it delivers professional-grade performance at a hobbyist-friendly price.

Specifications

ASIN	B0771N1ZF9
Best Sellers Rank	#134,193 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #54 in Lab Oscilloscopes
Brand Name	Siglent
Color	Grey
Customer Reviews	4.8 4.8 out of 5 stars (967)
Global Trade Identification Number	00764560085678
Included Components	Quick Start, Calibration Certificate, 4 passive probes, USB cable
Item Dimensions	12.2 x 5.12 x 5.91 inches
Item Weight	6.6 Pounds
Manufacturer	Siglent Technologies
Minimum Operating Voltage	500 Microvolts
Model	SDS1104X-E
Part Number	SDS1104X-E
Power Source	Us
Specification Met	FCC
Style Name	Decoder
UPC	764560085678
Unit Count	1.0 Count

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