econtest-bench-mcp
MCP server for controlling SIGLENT oscilloscopes and signal generators via USBTMC, enabling waveform generation, scope configuration, measurement, and evidence reporting for electronics competitions.
README
电赛信号题统一 MCP
econtest-bench-mcp 是面向电赛低压信号题的 USB/VISA MCP Server 与 Agent Skill，当前版本为 0.2.0。
支持设备：
- SIGLENT SDS2000X Plus 系列示波器；实机验证 SDS2502X Plus。
- SIGLENT SDG6000X/SDG6000X-E 系列信号发生器；实机验证 SDG6032X-E。
能力与边界
- 仅支持 USBTMC + NI-VISA/PyVISA；不支持 LAN、无线、Telnet 或 WebControl。
- 信号源支持 SINE、SQUARE、RAMP、PULSE 与扫频；输出软上限为 3 Vpp，且要求
|Offset| + Vpp/2 <= 3.3 V。 - 支持示波器配置、RUN/STOP/SINGLE、原生测量、有界 BYTE 波形、当前面板 PNG 截图和证据化完整回路。
- 幅度、Vpp、频率验收优先使用
scope_measure_simple的原生读数；波形和 PNG 用于证据与诊断。 scope_screenshot已在 SDS2502X Plus5.0.0.1.6.2R5实机验证：读取 PNG、校验 CRC/尺寸，并在截图后复核身份。旧固件和其他型号需单独验证。- 所有写操作执行身份校验、
*OPC?、回读与证据记录；完整回路在结束或失败时尝试关闭信号源并确认示波器 STOP。
实机截图示例见 screen.png。
MCP 工具
| 类别 | 工具 |
|---|---|
| 发现与状态 | bench_list_devices、bench_identify、scope_status、generator_status、bench_status |
| 信号源 | generator_configure_basic、generator_set_load、generator_set_output、generator_configure_sweep |
| 示波器 | scope_configure_channel、scope_configure_timebase、scope_configure_edge_trigger、scope_control、scope_measure_simple、scope_capture_waveform、scope_screenshot |
| 工作流与产物 | bench_capture_response、artifacts_remove_runs |
文档
安全要点
- 软件不能验证接地、隔离、探头位置、额定值或 DUT 上电状态；这些由操作者负责。
- 不得将 BNC 地端或示波器地夹连接到非隔离高侧节点。
- 输出 ON 必须明确确认目标和负载；通信丢失时不得声称输出已关闭。
- 不提供任意 SCPI、
*RST、固件更新、网络配置或仪器文件系统操作。
所有证据写入 artifacts/runs/<UTC时间>_<run_id>/。使用 skill/econtest-signal-bench/scripts/validate_evidence.py 校验 manifest、文件大小和 SHA-256。
鸣谢
本项目在架构、设备驱动和安全证据设计上参考了以下开源项目：
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