MSO/UPO2000-I2C Embedded serial bus trigger and analysis-I2C
Overview
The MSO/UPO2000-I2C adds I2C bus triggering, decoding, and search to your MSO/UPO2000 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. The option is enabled by a software license keyed to the oscilloscope's serial number and is permanent for the life of the instrument.
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.
- Lifetime License Activation — activate once, owned for the life of the instrument. No subscriptions, no renewals, no maintenance fees.
When You Need This Option
The option fits the following workflows:
- 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.
Compatibility
This option is compatible with all MSO/UPO2000 Series oscilloscopes (MSO/UPO2102, 2104, 2202, 2204 and -S variants). The same capability is offered on other UNI-T oscilloscope families: MSO/UPO3000CS.
Frequently Asked Questions
Should I buy this individually or get a bundle?
If you only need I2C, the individual license covers exactly that protocol. The BND bundle includes every protocol in the series.
How is this option activated?
The option is enabled by a software license keyed to the oscilloscope's serial number. After purchase, the license is registered on the UNI-T website to generate the license file, which is then loaded onto the instrument from a USB drive through the option-install menu. Refer to the oscilloscope's user manual for the step-by-step procedure.
Is the license permanent, or does it require renewal?
The license is permanent — a one-time purchase that stays active for the life of the instrument. No subscriptions, no annual renewals, and no expiration.
