Agilent Technologies InfiniiVision 3000 DSO-X 3054A Manuale di Servizio Scaricare il pdf (Pagina 848)

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848 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide

34 Status Reporting

Status Reporting Decision Chart

yes

no Do you want

to do status

reporting?

Do you want to

send a Service Request

(SRQ) interrupt to the

controller?

Do you want to

report events monitored by

the Standard Event Status

yes

no (Your programs can read the status registers instead.)

yes

Reset the instrument and

clear the status registers:

myScope.WriteString "*RST"

myScope.WriteString "*CLS"

Use the *ESE common command

to enable the bits you want to

use to generate the ESB summary

bit in the Status Byte Register.

Use the *SRE common command

to enable the bits you want to

generate the RQS/MSS bit to set

bit 6 in the Status Byte Register

and send an SRQ to the computer.

If events are monitored by the

Standard Event Status Register,

also enable ESB with the *SRE

command.

Activate the instrument function

that you want to monitor.

When an interrupt occurs, interrupt

handler should serial poll STB with:

varR = myScope.IO.ReadSTB

END

To read the Status Byte Register,

use the following:

myScope.WriteString "*STB?"

varR = myScope.ReadNumber

MsgBox "STB: 0x" + Hex(varR)

This displays the hexadecmal value

of the Status Byte Register.

Determine which bits in the

Status Byte Register are set.

Use the following to read the

contents of the status byte:

myScope.WriteString "*STB?"

varR = myScope.ReadNumber

MsgBox "STB: 0x" + Hex(varR)

Use the following to see if an

operation is complete:

myScope.WriteString "*OPC?"

varR = myScope.ReadNumber

MsgBox "OPC: 0x" + Hex(varR)

Use the following to read the

Standard Event Status Register:

myScope.WriteString "*ESR?"

varR = myScope.ReadNumber

MsgBox "ESR: 0x" + Hex(varR)

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Agilent Technologies InfiniiVision 3000 DSO-X 3054A Manuale di Servizio Pagina 848

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