Product documents

Measurement software, user manuals, command references and brochures. The documents are currently published in Korean; please contact us for an English datasheet.

FET transfer measurement in the OTTER I-V EXPERT software — FET transfer measurement. Click the picture to enlarge it.

Measurement screen — FET transfer measurement. Click the picture to enlarge it.

For research · latest version

OTTER I-V EXPERT software

v1.10.3 · 31 October 2026 · firmware v0.2.60

Download for Windows64-bit installer · about 58 MB

Windows 10 · 11
64-bit
USB-PD power (45 W or more)
USB data
Korean · English

What is new in this version

On AUTO range, the first point of a low-current measurement no longer jumps by a few nA (most visible on the FET gate current).
How many readings are discarded after the output turns on is set under Settings → AUTO range: discard first reads (5 by default).
The firmware stays at v0.2.60, so there is nothing to reflash.

All release notes User manual (PDF)Firmware recovery tool

Run the installer. If “Windows protected your PC” appears, click More info and then Run anyway.
Power the instrument from a USB-PD charger (45 W or more), connect it to the PC with the USB cable and click Connect. Let it warm up for about 30 minutes and take the field zero before measuring.
From v1.7.0 the software announces new versions and new firmware itself, so there is no need to come back to this page.

AI friendly · command set

Measure from the command line, an AI agent or your own code

All three come with the installer above; there is nothing else to install. Paste the guide below into your AI tool and it can use the commands straight away. This page carries the public edition without the calibration and diagnostic commands; the full edition comes with the instrument.

Command line (CLI)

The same program measures without opening a window. It runs the same code as the tabs and saves the data with a measurement record (.md). Nine measurement types are supported.

OtterIVExpert.exe cli list
OtterIVExpert.exe cli iv --v-start -1 --v-stop 1 --v-step 0.1 --csv out.csv

AI agent (MCP)

Turn on Remote → Remote control in the program, and Claude on a laptop in the same lab network can run measurements on request. The program itself enforces the voltage and current limits.

install folder\claude_desktop\otter-iv-expert.mcpb
→ drag it onto the Claude Desktop window

Your own code (SCPI)

The instrument speaks SCPI over a USB virtual COM port, so Python, MATLAB or LabVIEW can all control it.

*IDN?
:SOUR1:VOLT 1.0
:OUTP1 ON
:READ1?

The full edition, with the calibration, identity and diagnostic commands, comes with the instrument. If you did not receive it, write to sales@semiotteredu.com.