Serial Data Loggers

Focus on Insights, Not Logistics

Our serial data loggers take the hassle out of capturing serial data. Whether you’re using GPS devices, inertial sensors, or serial-output force, pressure, or temperature sensors, our loggers reliably capture RS-232 and logic-level serial data. With support for data rates up to 921600 baud, even high-bandwidth data streams are reliably recorded. Data is saved to removable microSD/SD cards for easy access. Plus, a built-in real-time clock enables precise timestamps for every piece of data.

Check our products to find the perfect one for your application.

Feature	SSR-LC	SSR-1	SSR-1U	SSR-SDU
Price
Channels	1	3	4	4
Storage	microSD	microSD	microSD	SD
USB File Access			✔	✔
Industrial Temp¹	✔	✔	✔	✔
Onboard RTC	✔	✔	✔	✔
RTC Battery	External	Onboard	Onboard	Onboard
Supply Voltage	4.5-15VDC	4.5-32VDC	4.5-32VDC	4.5-32VDC
Power² at 5VDC	32 mA	41 mA	11 mA	11 mA
Size	36×28 mm	39×32 mm	39×32 mm	57×48 mm
Weight	4 g	7 g	8 g	17 g

Notes:
¹ All components support operating temperatures from -40 to 85 C
² Recording saturated 115200 baud streams on 3 channels (1 on LC), status LEDs off.

Easy Configuration

On the bench or in the field, Slerj loggers are designed to be configured without requiring special software. Just connect with any commonly available serial terminal and interact with the built-in shell interface.

Need to change channel 2 to 38400 baud, even parity, and 1 stop bit to support that odd GPS system? No problem. While we’re at it, let’s have channel 2 create files in the ‘GPS’ folder using current date and time in the filename.

Let’s enable channel 3 for recording whenever the digital input pin is high. And, don’t forget to save the configuration so it persists across power cycles.

Time Tagged Recording

Sometimes you need to know when data was received. Slerj loggers can tag received data with time based on record mode selection. Record mode can be configured independently for each channel.

Raw mode captures data as received.

Tagged-line mode is useful for time stamping line-oriented text data streams.

Time-Tagged Archive mode is used to apply timestamps to non-text, ‘binary’ data. The data below was captured from a 3DM-GX5-25 AHRS unit. The Slerj Time Tagged Parser utility (STTP) is provided as an open-source (MIT License) tool that can be leveraged to unpack messages with timestamps applied.

USB File Access

Need to retrieve data in harsh environments without exposing electronics to the elements or handling small memory cards? The SSR-1U and SSR-SDU have you covered. Simply connect to a PC via USB, and the logger file system can be accessed as a USB mass storage device – just like a thumb drive.

Custom Applications

Perhaps one of our loggers is almost what you need, but not quite. Good news! We design custom variations for unique applications. Need different connectors, or a different interface? Reach out and let us know. It might be easier than you think.

Check out this two-channel designed made to fit into the handle of a bar code scanner with application specific connectors. It enabled a customer to prove whether persistent data issues were caused by their product or back-end software from another vendor.

Or how about this one? It’s a two-channel version of the SSR-LC designed to fit inside a one-inch diameter tube and integrate a locking microSD connector. No, the customer didn’t tell us the application. That’s cool with us. We’re just here to help.