Ideally, all KMGD test points are placed on the bottom of the PCB. This allows the testing fixture to be simpler and less expensive, as it only needs to probe one side. KMGD vs. Traditional Vias
A is essential for non-intrusive kernel diagnostics. Start with static printk / DbgPrint , then move to dynamic probes. Always respect kernel IRQL and memory rules. For production, either strip test points or wrap them in conditional flags. kmgd test point
| Type | Meaning | Typical Use | |------|---------|--------------| | | Key Test Point | Critical node (e.g., power-on reset, clock output, enable pin) – must be tested on 100% of boards | | M | Measurement Point | Analog voltage, current shunt, or frequency measurement (e.g., Vcore, Vref) | | G | Ground Reference | Provides clean, low-impedance ground for oscilloscope or meter – essential for noise-sensitive measurements | | D | Digital Test Point | Digital signal line (I2C, SPI, UART, GPIO) – used for logic analyzer or boundary scan access | Ideally, all KMGD test points are placed on