Do not follow *OPC? with *TRG or GPIB bus triggers. Such triggers sent after *OPC? will be prevented from executing and will prevent the power module from accepting further commands. If this occurs, the only programmable way to restore operation is by sending the power module a GPIB DCL (Device Clear) command.

Query Syntax

*OPC?

 

Returned Parameters

<NR1>

ASCII 1 is placed in the Output Queue when the

 

 

power module has completed operations.

Related Commands

*OPC *TRIG

*WAI

*OPT?

 

 

Identification Query

 

 

Meaning and Type

 

 

Identification System Interface

 

 

Description

This query requests the power module to identify any options that are installed. Options are identified by number, as shown below. A 0 indicates no options are installed.

Query Syntax

*OPT?

Returned Parameters

<AARD>

Related Commands

(None)

*PSC

Meaning and Type

Power-on Status Clear Device Initialization

Description

This command controls the automatic clearing at power on the following registers (see "Chapter 4 - Status Reporting" for register details):

Service Request Enable.

Standard Event Status Enable.

If the command parameter = 1 (or any non-zero value), then the above registers are cleared at power on. If the command parameter = 0, then the above registers are not cleared but are programmed to their last state prior to power turn on. This is the most common application for *PSC and enables the power module to generate an SRQ (Service Request interrupt) at power on.

Command Syntax

*PSC <bool>

Parameters

0 1 OFF ON

Example

*PSC 0 *PSC 1

Query Syntax

*PSC?

Returned Parameters

<NR1> 0 1

Related Commands

*ESE *SRE

*PSC causes a write cycle to nonvolatile memory. If *PSC is programmed to 0, then the *ESE and *SRE commands also cause a write cycle to nonvolatile memory. The nonvolatile memory has a finite number of write cycles (see Table 1-2 in the power module User’s Guide). Programs that

repeatedly write to nonvolatile memory can eventually exceed the maximum number of write cycles and may cause the memory to fail.

Language Dictionary 27

Page 26
Image 26
Agilent Technologies 66lxxA manual Opt?, Psc