Introduction to SCPI

Remote Local Protocol

￿Definitions

Remote Operation

When an instrument operates in remote, all local controls, except the local key, are disabled.

Local Operation

An instrument operates in local when it is not in remote mode as defined above.

Local Lockout

In addition to the remote state, an instru- ment can be set to remote with ‘local lockout’. This disables the return-to-local button. In theory, the state local with lo- cal lockout is also possible; then, all local controls except the return-to-local key are active.

The Counter in Remote Operation

When the Counter is in remote operation, it disables all its local controls except the LOCAL key.

The Counter in Local Operation

When the Counter is in local operation the instrument is fully programmable both from the front panel and from the bus. If a bus message arrives while a change is being entered from the front panel, the front panel entry is interrupted and the bus message is executed.

We recommend you to use Remote mode when using counters from the bus. If not, the counter measures continously and the initiation command :INIT will have no effect.

3-6 How does SCPI Work in the Instrument?

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Fluke PM6685R, PM6681R manual Remote Local Protocol, Definitions