Quantum Composers 9500 Plus Series - Manual (Page 40)

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USB Interface Overview
The USB interface is standard on the 9500+. 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 Quantum Composers 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 n” command, where ‘n’ is
the desired communication speed. This parameter can be accessed via any
communication method except through the front panel.
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 n” where ‘n’ can
be:
• 4800
• 9600
• 19200
• 38400
• 57600
• 115200
• The BAUD rate that is accessible from the front panel of the pulse
generator applies only to the BAUD rate used by the db9 serial port.
SCPI command access to this port is via the command
“:SYSTem:COMMunicate:SERial:BAUD n” where ‘n’ has the same
acceptable rates as for the USB port.
• 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.