SDS1104X-U - Measuring equipment Siglent - Free user manual and instructions
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| Product type | 4-channel digital oscilloscope |
| Brand | Siglent |
| Model | SDS1104X-U |
| Bandwidth | 100 MHz |
| Maximum sampling rate | 1 GSa/s (per channel) |
| Memory depth | 14 Mpts (per channel) |
| Channels | 4 analog channels + 1 external trigger |
| Display | 7-inch TFT LCD display (800×480 pixels) |
| Power supply | 100-240 V AC, 50/60 Hz, 45 W max |
| Dimensions (W×H×D) | 305 × 150 × 120 mm |
| Weight | 2.6 kg |
| Main functions | Automatic measurement, FFT, serial protocol analysis (I²C, SPI, UART, CAN, LIN), XY mode, test masks |
| Maintenance and cleaning | Clean the screen with a soft, dry cloth. Do not use solvents. |
| Safety | Use grounding. Observe maximum input voltages: 400 V CAT I. |
| Spare parts and repairability | Available through Siglent authorized dealers. Repairability index: 7/10. |
| Operating temperature | 0 °C to +50 °C |
| Storage temperature | -20 °C to +60 °C |
| Relative humidity | ≤ 90% non-condensing |
| Warranty | 3 years (standard) |
| Connectivity | USB Host/Device, LAN (optional WiFi module via USB) |
Frequently Asked Questions - SDS1104X-U Siglent
How to update the oscilloscope firmware?
Download the update file from Siglent website, copy it to a USB drive formatted as FAT32, insert it into the USB Host port, then go to Utilities -> Firmware Update from the menu.
How to use the FFT function?
Press the Math key, choose Type: FFT. Adjust the source, vertical scale in dB, window (Hanning by default), and offset. Use cursors to measure frequency components.
What voltages can I safely measure on the inputs?
The BNC inputs support up to 400 V peak (CAT I) with a 1× probe. With a 10× probe, the maximum voltage is 400 V RMS. Always check the measurement category.
How to decode a serial protocol like I²C?
Connect the signals to the channels, press Decode, choose the protocol (e.g., I²C), assign channels for SCL and SDA, set the voltage thresholds, and enable decoding. The frames appear at the bottom of the screen.
How to take a screenshot?
Insert a USB drive, press the Save key, choose Image, then press Save again. The BMP image is saved on the drive.
What to do if the oscilloscope does not power on?
Check the power cable, the mains outlet, and the fuse located at the rear. If the fuse is blown, replace it with one of the same type (T2A, 250V). If the problem persists, contact customer service.
How to measure a signal with a differential probe?
Connect the differential probe to a channel. Make sure the probe attenuation (e.g., 10×, 100×) is correctly set in the channel menu (Probe > Attenuation). Use DC or AC coupling as needed.
How to use XY mode?
Press Acquire then go to XY Mode. Choose X and Y sources (default CH1 and CH2). Press Run/Stop to freeze the display. Adjust position and scale with the channel knobs.
How to set the timebase for a signal using Auto Set?
Press the Auto Set key once. The oscilloscope automatically adjusts the timebase, trigger, and vertical scale to display the signal optimally.
How to connect the oscilloscope to a PC via USB?
Use the USB Device port at the rear of the device. Install the drivers (available on Siglent website) and the control software (EasyScope). Once connected, the PC recognizes the instrument as a measurement device.
User questions about SDS1104X-U Siglent
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USER MANUAL SDS1104X-U Siglent
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Product information
Brand : Siglent
Model : SDS1104X-U
Category : Measuring equipment