Introduction

The common commands are defined by the IEEE 488.2 standard. These commands must be supported by all instruments that comply with this standard. Refer to figure 9-1 and table 9-1 for the common commands syntax diagram.

The common commands control some of the basic instrument functions such as instrument identification and reset, how status is read and cleared, and how commands and queries are received and processed by the instrument. The common commands are:

*CLS

*PRE

*ESE

*RST

*ESR

*SRE

*IDN

*STB

*IST

*TRG

*OPC

*TST

*OPT

*WAI

Common commands can be received and processed by the HP 16500C Logic Analysis System, whether they are sent over the bus as separate program messages or within other program messages. If an instrument subsystem has been selected and a common command is received by the instrument, the system will remain in the selected subsystem.

Example

If the program message in this example is received by the system, it

 

will initialize the disk and store the file and clear the status

 

information. This is not the case if some other type of command is

 

received within the program message.

 

":MMEMORY:INITIALIZE;*CLS; STORE ’FILE ’,’DESCRIPTION’"

 

 

9–2

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HP Sander 16500C manual Cls