lab-scpi

Easily configurable lab assistant that logs data using SCPI protocol

Workflow

1. Connect all of your SCPI-compatible test equipments (DMMs, AFGs, oscilloscopes, DC power supplies, spectrum analyzers, etc.) to a central computer. Supported connection methods include:

   • SCPI over TTY over USB (/dev/ttyUSB0)
   • SCPI over TCP over LAN (IP address + port)
   • (TODO) SCPI over USBTMC (/dev/usbtmc0)

2. Write a YAML configuration describing your setup:

   channels:
     dmm: !tcp
       host: 10.11.13.200
       port: 5025
     ps: !tty
       dev: /dev/ttyUSB0
       baud: 9600
       stop: 2

3. In the same YAML file, write your testing plan:

   steps:
     - !send {channel: ps, cmd: 'OUTP ON'}
     - !delay {seconds: 1}
     - !send {channel: dmm, cmd: 'MEAS:VOLT:DC?'}
     - U1: !recv {channel: dmm, unit: V}
     - !send {channel: ps, cmd: 'OUTP OFF'}
     - !send {channel: dmm, cmd: 'MEAS:VOLT:DC?'}
     - U2: !recv {channel: dmm, unit: V}
     - U: !math {op: '-', operands: ['U1', 'U2'], unit: V}

4. Download and compile lab-scpi:

   git get b1f6c1c4/lab-scpi
   cd lab-scpi
   cmake -G Ninja -S . -B cmake-build-release -DCMAKE_BUILD_TYPE=Release
   cmake --build cmake-build-release

5. Run the executable:

   ./cmake-build-release/lab <path-to-config>.yaml <path-to-data>.json