MSO/UPO3000CS-I2C Embedded serial bus trigger and analysis-I2C
Overview
The MSO/UPO3000CS-I2C adds I2C bus triggering, decoding, and search to your MSO/UPO3000CS Series oscilloscope — the standard two-wire bus for sensors, EEPROMs, ADCs, DACs, and peripheral ICs on virtually every circuit board.
Debugging I2C issues — NAKs, wrong data, bus contention, clock stretching? This decodes every transaction (address, R/W, data, ACK/NAK) overlaid on the waveform.
Key Features
- I2C Triggering — Trigger on start/stop, device addresses, data values, ACK/NAK, or missing acknowledges.
- Real-Time Decoding — Decoded I2C transactions on the waveform — address (7/10-bit), R/W, data bytes, ACK/NAK status.
- Bus Contention Detection — Identifies multi-master arbitration events and SDA/SCL conflicts.
- Clock Stretching Visibility — Shows when slaves hold SCL low, causing timeout issues.
- Software License Activation — License key applied through the instrument menu. No hardware changes, no downtime — enter the key and start decoding.
When You Need This
Sensor Read Failures
Trigger on a sensor's I2C address to capture successful and failed reads — find NAKs, corrupt data, or marginal timing.
Bus Lockup Debug
An 8-device I2C bus freezes intermittently. Decode to identify which device holds SDA or SCL low.
Compatible Instruments
This option is compatible with all UPO1000CS and MSO3000E Series oscilloscopes.
Own a Different Instrument?
Need I2C decode on a different oscilloscope? These series also offer it: MSO/UPO2000.
Explore Other MSO/UPO3000CS Options
Frequently Asked Questions
Should I buy this individually or get a bundle?
If you only need I2C, the individual license at $236 is the most economical. The BND bundle ($715) includes every protocol at the deepest discount.
How is this option activated?
You receive a license key after purchase. Enter the key in the instrument's menu under System → Options → Install. The capability is available immediately — no reboot, no hardware modification, no factory service required.
Is the license permanent or subscription-based?
All UNI-T software option licenses are permanent, one-time purchases. Once activated, the option remains available for the life of the instrument. No annual renewals or subscription fees.
