Instrument Setup and Status

 

IEEE-Common Commands

 

 

 

 

 

command:

*OPC?

 

 

 

syntax:

*OPC?

 

description:

The OPeration Complete query *OPC? parses all program message units in the input queue,

 

 

sets the operation complete bit in the Standard Event Status register, and places an ASCII

 

 

’1’ in the output queue, when the contents of the input queue have been processed.

 

 

Some module firmware includes commands that set a "StatNOPC" flag during execution to

 

 

indicate that the module is busy. If a module is executing a command which generates a

 

 

"StatNOPC" flag, the GPIB bus is not blocked to a command to another module. A second

 

 

command to a busy module is blocked until the module flag "StatOK" is set. Taking advan-

 

 

tage of this feature, and using *OPC? in a loop to query until the instrument returns 1, can

 

 

lead to useful gains in program execution efficiency.

 

 

The following actions cancel the *OPC? query (and put the instrument into Operation Com-

 

 

plete, Command Idle State):

 

 

Power-on

 

 

• the Device Clear Active State is asserted on the interface.

 

 

*CLS

 

 

*RST

 

parameters:

none

 

response:

1<END> is returned if all modules are ready to execute a new operation.

 

 

0<END> is returned if any module is busy.

 

example:

*OPC? → 1<END>

 

 

 

 

 

 

 

 

 

command:

*OPT?

 

 

 

syntax:

*OPT?

 

description:

The OPTions query *OPT? returns the modules installed in your instrument.

 

parameters:

none

 

response:

Returns the part number of all installed modules, separated by commas.

 

 

Slots are listed starting with the lowest slot number, that is, slot 0 for the Agilent 8164A/B

 

 

and Slot 1 for the Agilent 8163A/B and Agilent 8166A/B.

 

 

If any slot is empty or not recognised, two spaces are inserted instead of the module’s part

 

 

number. See the example below, where slots 1 and 4 are empty.

 

example:

*OPT? → 81682A , , 81533B, 81532A, <END>

 

 

 

 

60

Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition

Page 60
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Agilent Technologies B, 8166A, 8163A, 8164A Lead to useful gains in program execution efficiency, Plete, Command Idle State

8163A, 8164A, 8166A, B specifications

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