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Supported Instruments

Supported models

Auto-generated version

An auto-generated instruments table (built from source code, always up-to-date) is available at Instruments & Capabilities.

Model Type Interface Key Features
Rigol DHO804 Oscilloscope USB Screenshot, display, acquire, cursor, math, record, mask, label, invert, bwlimit, built-in AWG/counter/DVM
Tektronix MSO2024 Oscilloscope USB / GPIB Basic scope commands
HP E3631A Power Supply GPIB Triple-output, tracking
Keysight EDU36311A Power Supply USB / LAN Triple-output (6V/5A, 30V/1A, 30V/1A), tracking, OVP/OCP
Matrix MPS-6010H-1C Power Supply Serial Remote mode
HP 34401A Multimeter GPIB Display text, NPLC control
Keysight EDU34450A Multimeter USB / LAN 5½-digit, capacitance, temperature, dual display
OWON XDM1041 Multimeter USB / Serial Basic DMM commands
BK Precision 4063 Function Generator USB Basic AWG commands
Keysight EDU33212A Function Generator USB Dual-channel
JDS6600 (Seesii DDS) Function Generator Serial DDS waveform codes
NI PXIe-4139 SMU PXIe (nidcpower) ±60 V / 3 A four-quadrant (20 W source, 12 W sink), voltage/current source and measure
Keysight DSOX1204G Oscilloscope USB / LAN Screenshot, display, acquire, math, mask, label, invert, bwlimit, built-in AWG (WGEN), DVM
TI EV2300A USB-to-I2C Adapter USB HID SMBus/I2C read/write word/byte/block, register scan, raw probe

Connection setup

USB and GPIB instruments

  1. Install NI-VISA
  2. Connect the instrument
  3. Launch scpi-repl — it will auto-detect the instrument

NI PXIe instruments (NI PXIe-4139 SMU)

The NI PXIe-4139 uses the NI-DCPower driver, not VISA/SCPI. It is auto-detected by the REPL when the nidcpower Python package and NI-DCPower runtime are installed:

pip install nidcpower

The instrument appears as smu1 in the REPL. See Source Measure Unit (SMU) for commands.

Prerequisites and limitations:

  • Requires a PXIe chassis with a compatible controller slot connected to the host PC via MXI-Express or Thunderbolt.
  • NI-DCPower runtime and nidcpower Python package must be installed (Windows only; Linux support is limited).
  • The REPL auto-detects the first available device as smu1. Multiple cards are not currently supported.
  • Not compatible with VISA/SCPI — VISA-based commands (*IDN?, etc.) do not apply.
  • Remote PXI controllers are not supported.

TI EV2300A (USB-to-I2C)

The EV2300A is detected automatically via USB HID — no VISA or extra TI drivers needed. It appears as ev2300 in the REPL. See USB-to-I2C Adapter (EV2300) for commands.

Prerequisites:

  • EV2300A must have firmware loaded (not in bootloader mode). If the REPL reports "bootloader mode", flash firmware via TI bqStudio.
  • On Linux, a udev rule is needed for /dev/hidraw access. On macOS, install hidapi.

Serial instruments (Matrix MPS, JDS6600)

Serial instruments are probed automatically at multiple baud rates. No manual configuration is needed. Connect via USB-to-serial adapter, then launch scpi-repl.

Auto-detection

On startup (or when you type scan), the REPL:

  1. Lists all VISA resources (USB, GPIB, Serial)
  2. Queries *IDN? on each one
  3. Scans PXI slots for NI-DCPower devices
  4. Scans USB HID for EV2300 adapters
  5. Matches responses against the known model list
  6. Assigns a name (psu1, dmm1, scope1, awg1, smu1, ev2300, etc.)

If multiple instruments of the same type are found, they are numbered: psu1, psu2, etc.

Testing without hardware

Use --mock to run the REPL with simulated instruments:

scpi-repl --mock

Mock mode injects: psu1, psu2, psu3, awg1, awg2, dmm1, dmm2, dmm3, smu, scope1, scope2, scope3. Measurements return realistic random values. Useful for testing scripts before connecting real hardware.