Returning The Instrument To Local Control; Message Queues; How The Input Queue Works - Agilent Technologies 8163A Programming Manual

Message Queues

Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave Multichannel
System, Third Edition

Returning the Instrument to Local Control

If the instrument is in remote control, a screen resembling
Figure 1 will appear. Press [Local] if you wish to return the instrument to
local control.
Figure 1 Remote Control
Message Queues
The instrument exchanges messages using an input and an output queue.
Error messages are kept in a separate error queue.

How the Input Queue Works

The input queue is a FIFO queue (first-in first-out). Incoming bytes are
stored in the input queue as follows:
1 Receiving a byte:
– Clears the output queue.
– Clears Bit 7 (MSB).
Introduction to Programming
19