9-1
IM 2558A-01EN
USB Interface
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Index
9.1 USB Interface Features and Specifications
USB Interface Features
Reception Feature
• With the exception of turning the power switch on and off, you can use the reception feature to
specify the same settings that you specify by using the front panel keys.
• The 2558A can receive output requests for output values, output frequencies, panel setup
parameters, and error codes.
Transmission Feature
• The 2558A can transmit output values and output frequencies.
• The 2558A can transmit panel setup parameters and the status byte.
• The 2558A can transmit error codes when errors occur.
USB Interface Specifications
Item
Specifications
Number of ports
1
Connector
Type B connector (receptacle)
Electrical and mechanical
Complies with USB Rev. 2.0
Supported transfer modes
HS (High Speed; 480 Mbps) and FS (Full Speed; 12 Mbps)
Supported protocols
USBTMC-USB488 (USB Test and Measurement Class Ver. 1.0)
PC system requirements
A PC with a USB port, running the English or Japanese version of Windows
7 (32 bit/64bit), Windows Vista (32 bit), or Windows XP (32 bit, SP2 or later)
Switching between Remote and Local Modes
When Switching from Local to Remote Mode
The 2558A switches to remote mode when it is in local mode and it receives a
:COMMunicate:REMote ON
command from the PC.
• The REMOTE indicator illuminates.
• All dials and switches are disabled except for the flipping of the
OUTPUT
switch to the LOCAL
side to change the 2558A to local mode.
• Settings entered in local mode are retained even when the 2558A switches to remote mode.
When Switching from Remote to Local Mode
When the 2558A is in remote mode and you flip the
OUTPUT
switch to the LOCAL side,
the 2558A switches to local mode. However, this does not work if the 2558A has received a
:COMMunicate:LOCKout ON
command from the PC. The 2558A switches to local mode when it
receives a
:COMMunicate:REMote OFF
command from the PC, regardless of the local lockout
state.
• The REMOTE indicator turns off.
• Dials and switches can be used.
• Settings entered in remote mode are retained even when the 2558A switches to local mode.
Note
You cannot use the USB interface simultaneously with other interfaces (GP-IB and Ethernet interfaces).
Chapter 9
USB Interface