Implement SCPI-based virtual DMM with DC voltage and current measurement.
Supports MEAS, CONF, and READ commands. Integrates with physics engine
for DUT output measurements.
Implement SCPI-based virtual power supply with voltage/current control
and output enable commands. Integrates with physics engine for DUT
input voltage simulation.
- TEMP:SETPOINT: Set/query target temperature
- TEMP:ACTUAL?: Query actual chamber temperature from physics engine
- TEMP:STAB?: Query temperature stability (within 0.5°C threshold)
Provides SCPI command parsing and dispatch mechanism for virtual
instruments. Includes IEEE 488.2 common commands (*IDN?, *RST, *CLS,
*OPC) and abstract methods for instrument-specific implementations.
Full implementation of step() method with thermal-electrical coupling:
- Chamber temperature first-order response to setpoint
- Case temperature with self-heating via thermal calculations
- Junction temperature from θ_jc thermal resistance
- Electrical state from temperature-dependent DUT model
- Default LDO model when none provided
Temperature-dependent LDO voltage regulator model with:
- Output voltage tempco (ppm/°C)
- Quiescent current tempco
- Dropout voltage temperature dependence
- Power dissipation calculation (Vin-Vout)*Iload + Vin*Iq
- Dropout detection
Implements DUTModel protocol for physics engine integration.
Pure functions for first-order thermal response calculations:
- Temperature derivative and update using Euler integration
- Case temperature with self-heating via θ_ca
- Junction temperature calculation via θ_jc
- Steady-state junction temperature helper
Define PhysicsEngine class with stub methods for thermal-electrical
simulation. Methods return placeholder values; full implementation
will be added in Sprint 3.
