Logic Analyzer and pattern generator: SQ Series
SQ Series: 4 channels logic analyzer and pattern generator
SQ series (ScanaQuad) logic analyzer let capture, analyze and generate logic signals on 4 channels, at sampling rates up to 200MHz. They connect via USB to a computer running our free ScanaStudio software to display, decode and analyze captured signals.
Being 4 channels makes it a low budget device, while still covering all serial protocols analysis and debugging needs. That includes (but not limited to): SPI, I2C, USART, 1-Wire, CAN, LIN, I2C, RS232, RS485, TWI and much more (click for full list of supported protocol decoders).
Capture and generate logic signals
ScanaQuad is also able to generate captured signals (play back), or build genuine arbitrary test patterns, like UART, SPI or I2C packets. It can also be used to compose and generate Frequency modulation (FM) signals and pulse width modulation (PWM) signals. Thanks to the mixed mode, SQ devices can even capture and generate digital signals simultaneously. Mixed mode is specifically designed to allow engineers to stimulate a circuit with test signals and capture its response.
SQ series logic analyzers come with an embedded memory to store captured samples, as well as the patterns to be generated. Hence, SQ devices do not live-stream captured signals over USB. This has one big advantage: the performance do not depend on the host computer USB port performance
Powerful trigger options
- Edge trigger
- Logic change on one or various channels
- Trigger on a sequence of timed logic signals
- Trigger on a protocol word or event (like serial word or I2C address acknowledge)
SQ family overview
SQ series is composed of 4 different versions: SQ25, SQ50, SQ100 and SQ200. All versions have 4 channels. They cover sampling rates from 25MHz up to 200MHz, and sampling depths of 256K points / channel up to 4M points / channel. The table below summarizes the main differences between the 4 models.
|Sampling rate (Max)||25 MHz||50 MHz||100 MHz||200 MHz|
|Sampling depth (Max per channel)||256 Kpts||1 Mpts||2 Mpts||4 Mpts|
|Trigger options||Edge, level, pulse||Edge, level, pulse,
|Edge, level, pulse,
|Edge, level, pulse,
|Differential input pairs||0||0||1||2|
By combining logic analyzer and pattern generator capabilities in a single low price device, SQ is a perfect solution for students and small design houses. For more channels and more performances, check SP series logic analyzers.
- Embedded systems
- Firmware development and debugging
- Educational work
- Serial protocols analysis, like I2C, SPI, UART or 1-Wire (non exhaustive list)
- Reverse engineering
- Get quick insight into your serial communication application.
- Software lets you view decoded signals in many different levels of abstractions (Packets or detailed bits and bytes)
- Device performance do not depend on USB connection bandwidth
- Software running on Windows, macOS and Linux.
- Software is intuitive and very easy to use.
- Generate test patterns to stimulate a system without any other equipment.
Specification summary (full datasheet available here)
|Maximum sampling rate||25 MHz||50 MHz||100 MHz||200 MHz|
|Fastest mesurable digital signal||6MHz||12 MHz||25 MHz||50 MHz|
|Maximum output frequency (generator mode)||6 MHz||12 MHz||25 MHz||50 MHz|
|Sampling Period (Max. at sampling frequency = 1MHz)||256 ms||1s||2s||4s|
|Optionnal pull up/down resistor||X||X||10KΩ||10KΩ|
|Input voltage range (continuous)||0V to 5.5V||±5V||± 15V||± 15V|
|Input voltage range (10 ms pulse)||±12V||± 12V||± 50V||± 50V|
|Low level input voltage (Max)||0.8V||Adjustable||Adjustable||Adjustable|
|High level input voltage (Min)||2V||Adjustable||Adjustable||Adjustable|
|Input threshold hysteresis||100mV||350mV||350mV||350mV|
|Output series resistance||270Ω||270Ω||270Ω||270Ω|
|Output current (Max. per channel)||10mA||20mA||20mA||20mA|
|Output high level voltage (Typ.)||3.3V |
|1.65V, 2.8V, |
3.3V, 3.6V, 5.5V
3.3V, 3.6V, 5.5V
3.3V, 3.6V, 5.5V
|Output driver configuration||Push-Pull||Push-Pull, open-drain||Push-Pull, open-drain||Push-Pull, open-drain|
What's in the box
- ScanaQuad device
- 5 leads hook probes set
- 1M Mini-USB cable
List of supported protocols
SQ logic analyzers rely on ScanaStudio software to configure a capture, and visualize captured logic signals. ScanaStudio software is also used to decode most serial communication protocols. An important particularity of ScanaStudio ecosystem is that all protocol decoders are open source. That means that new decoders are added regularly, and existing decoders are updated thanks to feedback from the 10K+ users of ScanaStudio. Below is a non-exhaustive list of supported protocols; for a full list, check this GitHub repository:
ScanaStudio application packs all the features you need to capture, measure and analyze analog signals. It's available free of charge for the major platforms below. The application is regularly updated, please check the release notes here.
All decoders are free and open source (check GitHub repository)
Purchase can be made directly via our online store. Please select the desired model from the list below.
We ship worldwide.
Alternatively, you can select one of our authorized distributors from this list.
Ikalogic is dedicated to offering you the best user experience, specially after your purchase. All products have a 3 years warranty, and if you experience any problem during this period, repair or replacement is free of charge.
After the warranty period or if for any reason you have lost some accessories and need replacement ones, you may get all the services you need from this page. For any other inquiries, please contact us.