MDO3000 Programmer Manual.pdf - 第961页

Commands Listed in Alphabetical Order Examples TRIGGER:STATE ? might return : TRIGGER:STATE ARMED indicating that the pretrigger data is being acquired. *TST? (Query Only) T ests (self-tes t) the interface and returns a …

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Commands Listed in Alphabetical Order
TRIGger:FREQ
uency? (Query Only)
Returns the trigger frequency in hertz if available. If the trigger frequency is
not currently available, the IEEE Not A Number (NaN = 99.10E+36) value is
returned. Th
e maximum precision of the returned frequency is 12 digits.
Use the DISplay:TRIGFrequency command to enable/disable the calculation of
the trigger
frequency.
Group
Trigger
Syntax
TRIGger:FREQuency?
Related Commands
DISplay:TRIGFrequency
Examples
TRIGGER:FREQUENCY? might return TRIGGER:FREQUENCY 99.10+36
indicating that the trigger frequency is not available.
TRIGger:STATE? (Query Only)
Returns the current state of the triggering system.
Group
Trigger
Syntax
TRIGger:STATE?
Related Commands
TRIGger:A:MODe
Returns
ARMED indicates that the oscilloscope is acquiring pretrigger information.
AUTO indicates that the oscilloscope is in the automatic mode and acquires data
even in the absence of a trigger.
READY indicates that all pretrigger information has been acquired and that the
oscilloscope is ready to accept a trigger.
SAVE indicates that the oscilloscope is in save mode and is not acquiring data.
TRIGGER indicates that the oscilloscope triggered and is acquiring the post trigger
information.
2-930 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
Examples
TRIGGER:STATE
?
might return :TRIGGER:STATE ARMED indicating that the
pretrigger data is being acquired.
*TST? (Query Only)
Tests (self-test) the interface and returns a 0.
Group
Miscellaneous
Syntax
*TST?
Examples
*TST? always returns 0.
UNLock (No Query Form)
Unlocks the front panel. The command is equivalent to LOCk NONe.
Group
Miscellaneous
Syntax
UNLock ALL
Related Commands
LOCk
Arguments
ALL specifies that all front-panel buttons and knobs are unlocked.
Examples
UNLOCK ALL unlocks all front-panel buttons and knobs.
USBDevice:CONFigure
Enables or disables the rear USB port for use with Pictbridge printers.
Group
PictBridge
Syntax
USBDevice:CONFigure {DISabled|IMAge|USBTmc}
USBDevice:CONFigure?
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-931
Commands Listed in Alphabetical Order
Arguments
DISabled disab
les the rear USB port.
IMAge enables the rear USB port as an SIC device.
USBTmc enables the rear USB port as a USBTMC device.
Examples
USBDEVICE:CONFIGURE IMAGE enables the rear USB port as an SIC device
USBDEVICE:CONFIGURE ? might return USBDEVICE:CONFIGURE USBT
indicating a USBTMC device.
USBTMC? (Query Only)
Returns the USBTMC information used by the USB hosts to determine the
instrument interfaces.
Group
Miscellaneous
Syntax
USBTMC?
USBTMC:PRODUCTID:DECimal? (Query Only)
This query returns the product ID number as a decimal. The product ID numbers
vary for each instrument family and model. USBTMC stands for USB Test &
Measurement Class, a protocol that allows GPIB-like c
ommunication with USB
devices.
For product ID numbers, see the following table. (See
Table 1-3.)
Group
Miscellaneous
Syntax
USBTMC:PRODUCTID:DECimal?
Related Commands
USBTMC:VENDORID:HEXadecimal?
USBTMC:VENDORID:DECimal?
USBTMC:PRODUCTID:HEXadecimal?
USBTMC:SERIALnumber?
Examples
USBTMC:PRODUCTID:DECimal? might return a product ID value of 1033.
2-932 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual