HP 8920B, Programmer'S Manual

Page: 239 / 682

239
Common Command Descriptions
*CLS (Clear Status)
The *CLS command clears the contents (sets all bits to zero) of all Event
Registers summarized in the Status Byte. The *CLS command also empties all
queues (removes all current messages) which are summarized in the Status Byte,
except the Output Queue. The Status Byte Register is cleared and any pending
service request is cleared. The following Event Registers are affected:
Hardware 1 Status Register
Hardware 2 Status Register
Questionable Data/Signal Register
Standard Event Status Register
Operational Status Register
Calibration Status Register
Communicate Status Register
Call Processing Status Register
The Following message queues are affected:
Error Message Queue
NOTE: The *CLS command does not clear the contents of the Message Screen which is
displayed on the CRT when the SHIFT RX keys are selected. This display is only
cleared when the unit is powered on.
*ESE (Standard Event Status Enable)
The Test Set responds to the *ESE command. See
"Status Reporting" on page 260
for a detailed explanation of the *ESE command.
*ESE? (Standard Event Status Enable Query)
The Test Set responds to the *ESE? command. See
"Status Reporting" on page
260
for a detailed explanation of the *ESE? command.
*ESR? (Standard Event Status Register Query)
The Test Set responds to the *ESR? command. See
"Status Reporting" on page
260
for a detailed explanation of the *ESR? command.