Agilent Technologies X Series Manual page 194

System Functions
System
Range
Initial S/W Revision
USB Connection Status (Remote Command Only)
Enables you to determine the current status of the USB connection.
Mode
Remote Command
Example
Notes
State Saved
Range
Initial S/W Revision
USB Packet Count (Remote Command Only)
Enables you to determine the number of packets received and transmitted on the USB bus.
Mode
Remote Command
Example
Notes
State Saved
Initial S/W Revision
194
NONE|LSPeed|HSPeed|FSPeed
Prior to A.02.00
All
:SYSTem:COMMunicate:USB:STATus?
:SYST:COMM:USB:STAT?
SUSPended – Indicates that the USB bus is currently in its suspended state.
The bus is in the suspended state when:
The bus is not connected to any controller
The controller is currently powered off
The controller has explicitly placed the USB device into the suspended state.
When in the suspended state, no USB activity, including start of frame packets
are received.
ACTive – Indicates that the USB device is in the active state. When the device
is in the active state, it is receiving periodic start of frames but it isn't
necessarily receiving or transmitting data.
No
SUSPended|ACTive
Prior to A.02.00
All
:SYSTem:COMMunicate:USB:PACKets?
:SYST:COMM:USB:PACK?
Two integers are returned. The first is the number of packets received since
application invocation, the second is the number of packets transmitted since
application invocation. If no packets have been received or transmitted the
response is 0,0.
The packet count is initialized to 0,0 when the instrument application is
started.
No
Prior to A.02.00