io.github.shaag7967由 GitHub 账号 shaag7967 发布v0.1.1更新于 Nov 3, 2026
Measurements with a Siglent SDM3045X bench multimeter via USB or LAN (unofficial)
非官方 MCP 服务器，让助手通过 USB 或局域网从 Siglent SDM3045X 台式万用表获取实时读数。
Desktop only，通过 STDIO。 STDIO 服务会启动本地进程，因此需要 SourceWeft 桌面宿主。
参照 仓库 中的启动说明。
An MCP server that lets AI assistants take measurements with a Siglent SDM3045X bench multimeter connected via USB or LAN.
Unofficial project, not affiliated with or endorsed by Siglent. Tested with an SDM3045X, firmware 5.02.01.10, over USB (Linux) and LAN.
Every reading comes with its unit, the range used and, where the data sheet gives a single
figure, its accuracy (e.g. ±(0.06 % of reading + 8 counts) as an absolute value). Overloads
are reported as "overload": true instead of the instrument's 9.9E37.
With --allow-scpi one more tool is available:
The raw SCPI tool is off by default because it can change any setting, including the LAN configuration.
Python ≥ 3.10 and uv
The instrument connected to the USB device port on the rear, or to the network.
Linux, USB: the kernel usbtmc driver makes the instrument available as /dev/usbtmc0.
Give logged-in users access with a udev rule:
Windows / macOS, USB: install a VISA (NI-VISA or Keysight IO Libraries) and start the
server with --visa-backend @ivi.
LAN: no extra software. The instrument needs an address in your subnet; then the server
finds it by itself. On the instrument open Utility → I/O Config → LAN Settings and turn on
DHCP, or enter a static IP address, subnet mask and gateway under Modify Settings (User
Manual, section I/O Configuration, available on the
Siglent product page). Check that the
instrument's subnet matches your network: ours came with the static address 10.11.13.220,
which the broadcast search does not reach. While USB is connected,
SYST:COMM:LAN:IPAD? (e.g. with the scpi tool) shows the address in use.
RESOURCE can be a device file (/dev/usbtmc0), an IP address or host name (VXI-11), or any
VISA resource string such as TCPIP::192.168.1.50::5025::SOCKET (raw socket) or
USB0::0xF4EC::0x1203::SDM34XXXXXXXXX::INSTR. Port 5024 is a telnet console and does not work
as a socket resource.
Auto-detection tries /dev/usbtmc* first, then Siglent instruments listed by VISA on USB
(leaving out those already asked through /dev/usbtmc*, since pyvisa-py would take them away
from the kernel driver), then VXI-11 instruments in every network this computer is connected to
(UDP broadcast to the portmapper, about 1 s). It accepts the first one that identifies itself as an SDM3045X. With
several instruments, --serial picks one by its serial number (shown by get_device_info, on
the rear label and under Utility → System Setup → System Info). Set --resource instead if
the instrument is in another subnet, where the broadcast does not reach it; the two options
exclude each other.
To check a real instrument, connect it and run:
The basic checks only use functions that put no current into the inputs. Observed instrument behaviour, including where it differs from the Remote Manual, is described in docs/protocol.md.
MIT
来源：README.md，提交 8358573
Take one reading with the function, range and speed currently set on the instrument. Function, range and speed are kept; the trigger is set to immediate with one reading per trigger, as measure does. Returns value, unit, range, timestamp (UTC) and, where the data sheet allows, the accuracy.
无需输入参数。
Select a measurement function and take one reading. This switches the instrument (front panel included) to the given function, with autorange unless a range is given. Returns value, unit, range used, timestamp (UTC) and, where the data sheet allows, the accuracy of the reading. Args: function: Measurement function. Leads in HI/LO for voltage, resistance_2w, capacitance, frequency, period, continuity, diode and temperature; in I/LO for currents; resistance_4w also uses HI Sense/LO Sense. range: Fixed range in V, A, Ω or F; omit for autorange. dc_voltage 0.6, 6, 60, 600, 1000; ac_voltage 0.6, 6, 60, 600, 750; dc_current 0.0006, 0.006, 0.06, 0.6, 6, 10; ac_current 0.06, 0.6, 6, 10; resistance_2w/resistance_4w 600, 6000, 60000, 600000, 6e6, 6e7, 1e8; capacitance 2e-9, 2e-8, 2e-7, 2e-6, 2e-5, 0.0002, 0.01. Other functions have no range. speed: Only for dc_voltage, dc_current, resistance_2w, resistance_4w: slow (10 PLC, default, most accurate), medium (1 PLC), fast (0.3 PLC). sensor: Required for temperature: pt100 (RTD) or thermocouple type B, E, J, K, N, R, S or T.
rangespeedsensorfunction必填Record timestamped readings at a fixed interval and return statistics plus all samples. Readings are paced by this computer. A reading takes about 0.3 s at speed slow and in most other functions, 0.6 s for frequency and period; with a shorter interval readings are taken back to back, and none starts later than one interval after duration_s, so the recording ends on time with fewer samples. Without function the present function and range are kept; otherwise they are set as in measure. Args: duration_s: Recording time in seconds (max 600). interval_s: Time between readings in seconds (min 0.1). function: Measurement function. Leads in HI/LO for voltage, resistance_2w, capacitance, frequency, period, continuity, diode and temperature; in I/LO for currents; resistance_4w also uses HI Sense/LO Sense. range: Fixed range in V, A, Ω or F; omit for autorange. dc_voltage 0.6, 6, 60, 600, 1000; ac_voltage 0.6, 6, 60, 600, 750; dc_current 0.0006, 0.006, 0.06, 0.6, 6, 10; ac_current 0.06, 0.6, 6, 10; resistance_2w/resistance_4w 600, 6000, 60000, 600000, 6e6, 6e7, 1e8; capacitance 2e-9, 2e-8, 2e-7, 2e-6, 2e-5, 0.0002, 0.01. Other functions have no range. speed: Only for dc_voltage, dc_current, resistance_2w, resistance_4w: slow (10 PLC, default, most accurate), medium (1 PLC), fast (0.3 PLC). sensor: Required for temperature: pt100 (RTD) or thermocouple type B, E, J, K, N, R, S or T.
rangespeedsensorfunctionduration_sinterval_sTake a series of readings as fast as the instrument can and return statistics plus all values. Readings are paced by the instrument and have no individual timestamps. Approximate rates (50 Hz mains): dc_voltage, dc_current and resistance 4/s at speed slow, 40/s medium, 175/s fast; ac functions and temperature 4/s; frequency and period 2/s. Bursts estimated to take longer than 600 s are refused. Without function the present function and range are kept; otherwise they are set as in measure. Args: count: Number of readings, 1 to 10000. function: Measurement function. Leads in HI/LO for voltage, resistance_2w, capacitance, frequency, period, continuity, diode and temperature; in I/LO for currents; resistance_4w also uses HI Sense/LO Sense. range: Fixed range in V, A, Ω or F; omit for autorange. dc_voltage 0.6, 6, 60, 600, 1000; ac_voltage 0.6, 6, 60, 600, 750; dc_current 0.0006, 0.006, 0.06, 0.6, 6, 10; ac_current 0.06, 0.6, 6, 10; resistance_2w/resistance_4w 600, 6000, 60000, 600000, 6e6, 6e7, 1e8; capacitance 2e-9, 2e-8, 2e-7, 2e-6, 2e-5, 0.0002, 0.01. Other functions have no range. speed: Only for dc_voltage, dc_current, resistance_2w, resistance_4w: slow (10 PLC, default, most accurate), medium (1 PLC), fast (0.3 PLC). sensor: Required for temperature: pt100 (RTD) or thermocouple type B, E, J, K, N, R, S or T.
countrangespeedsensorfunctionInstrument model, serial number, firmware, VISA resource and the present measurement configuration.
无需输入参数。
已满足适用检查项的 90%
该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。
请在注册中心条目中声明凭据请求头，或保持端点能够响应探测，以便判定其认证方式。
echo 'SUBSYSTEM=="usbmisc", KERNEL=="usbtmc[0-9]*", TAG+="uaccess"' | sudo tee /etc/udev/rules.d/70-usbtmc.rulessudo udevadm control --reload && sudo udevadm triggerclaude mcp add siglent-sdm3045x -- uvx mcp-server-siglent-sdm3045x# fixed address instead of auto-detection:claude mcp add siglent-sdm3045x -- uvx mcp-server-siglent-sdm3045x --resource 192.168.1.50{ "mcpServers": { "siglent-sdm3045x": { "command": "uvx", "args": ["mcp-server-siglent-sdm3045x"] } }}uv syncuv run pytest # tests use a simulated instrumentnpx @modelcontextprotocol/inspector uv run mcp-server-siglent-sdm3045x # try the tools interactivelyuv run python scripts/hardware_test.py # voltage-type functions onlyuv run python scripts/hardware_test.py --with-test-current # also resistance, current, capacitance, …uv run python scripts/hardware_test.py --reconnect # also unplug/replug USB when asked