The Keysight N1045A is a remote electrical sampling head module for high-speed waveform measurements in a compatible DCA-X system. It places the sampling connection near the device under test and offers two- or four-channel configurations. The source lists selectable bandwidth settings of 20, 35, 45, and 60 GHz, with 65 GHz described as typical maximum performance. Waveform, jitter, and signal-integrity measurements depend on the complete mainframe, software, and module configuration. Connector arrangement, included adapters, and any channel upgrade entitlement require instrument-specific confirmation.