Tektronix TDS420A User Manual
Command Descriptions
TDS Family Oscilloscope Programmer Manual
2–79
*CLS (No Query Form)
Clears the digitizing oscilloscope status data structures.
Status and Error
DESE, *ESE, *ESR?, EVENT?, EVMsg?, *SRE, *STB?
The *CLS command clears the following:
H the Event Queue
H the Standard Event Status Register (SESR)
H the Status Byte Register (except the MAV bit; see below)
If the *CLS command immediately follows an
, the Output Queue and
MAV bit (Status Byte Register bit 4) are also cleared. MAV indicates informa-
tion is in the output queue. The device clear (DCL) GPIB control message will
clear the output queue and thus MAV. *CLS does not clear the output queue or
MAV. (A complete discussion of these registers and bits, and of event handling
in general, begins on page 3–1.)
tion is in the output queue. The device clear (DCL) GPIB control message will
clear the output queue and thus MAV. *CLS does not clear the output queue or
MAV. (A complete discussion of these registers and bits, and of event handling
in general, begins on page 3–1.)
*CLS can suppress a Service Request that is to be generated by an *OPC. This
will happen if a hardcopy output or single sequence acquisition operation is still
being processed when the *CLS command is executed.
will happen if a hardcopy output or single sequence acquisition operation is still
being processed when the *CLS command is executed.
CURSor? (Query Only)
Returns all current cursor settings.
Cursor
Group
Related Commands
Syntax
Group
Syntax