This chapter provides information for the initial inspection and preparation for use of the MS4640A Series VNA and includes information on instrument installation, required operating environment, power requirements, initial inspection, and optional rack mounting procedures. After power up, the various power modes are described with general warm-up and calibration time intervals. The preventive maintenance section includes information on cleaning and fuse replacement along with preparation for storage or shipment. General set up procedures are provided for remote programming control over GPIB and Ethernet or USB only networks.