10 Best Digital Oscilloscopes 2025 in the United States

The RIGOL Digital Oscilloscope DHO814 is designed for professionals and hobbyists who need reliable performance in a compact package. With a bandwidth of 100 MHz and up to 1.25 GSa/s sample rate, it meets the demands of various applications, from basic electronics to more complex signal analysis. The device's 12-bit vertical resolution enhances the clarity of signals, allowing for better observation of small fluctuations that may otherwise go unnoticed.

One of its standout features is the support for up to four analog channels, enabling users to analyze multiple signals simultaneously, which is a significant advantage in complex diagnostic scenarios. The 25 Mpts memory depth allows for capturing longer signals without losing detail, making it ideal for applications requiring extensive data capture. The user-friendly 7-inch touchscreen display coupled with the innovative Flex knob improves usability significantly, making navigation through options intuitive.

However, there are some drawbacks to consider. While the 100 MHz bandwidth is sufficient for many applications, professionals working with higher frequency signals may find it limiting. Additionally, though the waveform search and navigation functions are beneficial, they may have a learning curve for beginners. There are also some competitors that offer higher specifications at a similar price point, which could be a consideration for users wanting the latest features.

The Siglent Technologies SDS1104X-E is a solid choice for those looking into digital oscilloscopes, particularly for hobbyists and professionals who need versatile and reliable performance. With a bandwidth of 100 MHz and a decent sample rate, this oscilloscope is equipped to handle a variety of signal measurements. It supports four channels, making it useful for more complex analyses where multiple signals need to be monitored simultaneously. The addition of a standard decoder for protocols like IIC, SPI, UART, CAN, and LIN enhances its functionality, especially in embedded system projects.

One of the standout features is the memory depth, allowing for detailed signal captures, which is essential for analyzing fast signals over time. The display quality is generally good, contributing to a user-friendly experience when interpreting waveforms. Furthermore, with the option for a USB AWG module, it adds even more flexibility for users who may need signal generation capabilities alongside their measurements.

The weight of 6.6 pounds may make it less portable than some users would prefer, particularly for those who might need to transport it frequently. Additionally, while it caters well to common protocols, it may lack specialized decoding for less common protocols, which could be a limitation for some advanced users. The model has been in the market since 2017, so while it remains relevant, it may not have the latest technology features found in newer models.

The SDS1104X-E digital oscilloscope is a well-rounded instrument for those who require a reliable tool for everyday signal analysis in an industrial, scientific, or educational setting. It balances features and performance effectively, although potential users should consider their specific needs, especially regarding portability and protocol decoding capabilities.

The Siglent SDS814X HD is a 4-channel, 100 MHz bandwidth digital oscilloscope that stands out with its high 12-bit resolution, offering more precise measurements compared to the more common 8-bit scopes. This makes it suitable for detailed signal analysis in both professional and educational settings. The oscilloscope supports a 2GSa/s sample rate, ensuring a high level of detail in capturing fast signals. Its 50Mpts memory depth is excellent for capturing long signal histories without compromising on detail.

The 7-inch touch screen provides a modern, intuitive interface, making it easy to navigate through various functions and settings. Furthermore, the device is capable of capturing up to 80,000 waveforms per second in normal mode and up to 500,000 in sequence mode, which is beneficial for observing and analyzing rapidly changing signals. However, for those requiring digital channels, it’s important to note that the 16 digital channels are an optional feature that requires additional purchases (SDS800XHD-16LA and SLA1016 logic probe), which could increase the cost.

The oscilloscope's size and weight (5.94 x 12.28 x 5.2 inches; 8.4 pounds) make it relatively portable for lab or field use. The Siglent SDS814X HD offers a robust set of features suitable for detailed signal analysis, but potential buyers should consider the additional cost for full digital channel functionality.