8-32
USB Interface Overview
The USB interface is standard on the 575. Before this type of communication can
be used, the appropriate drivers must be installed on the personal computer (pc).
These drivers are included on the CD that was shipped with your unit. Please
contact Berkeley Nucleonics or visit
www.berkeleynucleonics.com
for updated
installation files and instructions.
USB communication is achieved by using a mapped (virtual) COM port on the
PC. The driver installation executable will obtain an unused COM port number,
install the USB drivers, and make that COM port number available for typical
RS232 communication to the pulse generator. HyperTerminal or other common
software may be used.
When communicating through the mapped COM port over USB, the baud rate for
the communication port used by the USB chip must match the baud rate for the
COM port on the PC. Access to the USB port baud rate is done using the SCPI
command “:SYSTem:COMMunicate:SERial:USB <baud rate>” command. This
parameter can be accessed via any communication method. The default baud
rate for USB is 38400.
USB communication notes:
The correct drivers must be installed on the personal computer before
communication can be accomplished via USB.
The BAUD rates on the PC and on the pulse generator must match for
successful communication.
The USB port’s BAUD rate on the pulse generator can be set using the
SCPI command “:SYSTem:COMMunicate:SERial:USB <baud rate>”
where <baud rate> can be:
o
4800
o
9600
o
19200
o
38400 (default)
USB 1.0 specification is used. The USB cable can be removed without
“unplugging” the device in the operating system environment.
Echo functionality is not available on the USB port.
GPIB Interface Overview
A GPIB interface is optional on the 575. Refer to
Appendix C
for more
information.
Ethernet Interface Overview
An Ethernet interface is optional on the 575. Refer to
Appendix C
for more
information.