Add OWON XDM1241 SCPI command reference

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Summary

• Documents the OWON XDM1241's non-standard SCPI command set in docs/devices/owon-xdm1241.md
• Covers verified commands (MEAS1?, FUNC1?, RANGE1?, RATE?, AUTO1?, *IDN?), connection parameters, and commands that do NOT work (standard SCPI subsystem syntax)
• Explains why sigrok's scpi-dmm driver fails to recognize this device: it uses flat commands instead of hierarchical SCPI

Test plan

• All commands verified on real hardware (OWON XDM1241, firmware V4.3.0) via serial_query MCP tool

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Added comprehensive documentation for the OWON XDM1241 device, including device overview, USB connectivity information, SCPI command reference with verified commands and examples, connection parameters, and compatibility notes.

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Walkthrough

A new documentation file for the OWON XDM1241 device is added, detailing SCPI reference information, USB serial connectivity, command conventions, connection parameters, verified working commands with examples, and usage guidelines for serial communication.

Changes

Cohort / File(s)	Summary
Device Documentation docs/devices/owon-xdm1241.md	New SCPI reference guide for OWON XDM1241 multimeter, covering device overview, USB connectivity, non-standard SCPI conventions (flat command set, display suffix, write responses, line terminator), verified commands (IDN, MEAS, FUNC, RANGE, RATE), unsupported commands, and serial_query usage examples.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Poem

🐰 A new device joins the warren today,
With SCPI commands to light the way,
The XDM1241 finds its place,
In our documentation space,
Hop and skip, the reference is laid! 📚

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Note

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_{Comment @coderabbitai help to get the list of available commands and usage tips.}