Keysight PD1500A Installation And Use Manual page 36

Double-Pulse Test Preparation
36
IMPORTANT: When installing the N2819A Differential oscilloscope
probe on the I pins on the High-Side Gate Drive Module, the
G
probe compensation adjustment hole must face outward. The
Keysight logo must face toward the module.

Keysight Double-Pulse Test Fixture Installation and Use Guide
Gate Drive Modules (Low-Side and High-Side)
X
Probe
Adjustment
Hole
+ and -
markings