Keysight U2781A, User Manual, Page: 24 / 45

2 Features and Functions
24 Keysight U2781A User’s Guide
Introduction
The Keysight U2781A USB modular instrument chassis provides six USB modular
slots and is equipped with 200 W universal AC power supply and built-in over
current protection circuit. A 10 MHz system reference clock is supplied to each
modules slots. There are two temperature sensors and a monitoring fan control
circuit to monitor the internal temperature and speed of the fan. The fan is mainly
used for heat dissipation.
The chassis also provides external 10 MHz reference clock, external trigger in and
trigger out functions via BNC connectors at the rear panel.
The key function for the chassis is to provide users with flexibility when using the
U2781A modular instrument chassis. The modular chassis allocates housing for
six USB modules with built-in power supply. The USB backplane provides a
means to synchronize the modules.
The key features of the U2781A USB modular instrument chassis are as follows:
– Simultaneous Synchronization (SSI)
– Star trigger
– Internal and external 10 MHz reference clock
– Trigger in and trigger out signals
– Standard SCPI commands
– IVI-COM driver compatibility
– USBTMC 488.2 compliant
– Hi-Speed USB 2.0 interface
The key functions of the Keysight U2781A USB modular instrument chassis will be
elaborated in the following sections.