Clearing The Input Queue; The Output Queue; The Error Queue - Agilent Technologies 8163A Programming Manual

Introduction to Programming
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2 No modification is made inside strings or binary blocks. Outside
strings and binary blocks, the following modifications are made:
– Lower-case characters are converted to upper-case.
– The characters 00
(20 ).
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– Two or more blanks are truncated to one.
3 An EOI (End Or Identify) sent with any character is put into the input
queue as the character followed by a line feed (LF, 0A
with a LF, only one LF is put into the input queue.
4 The parser starts if the LF character is received or if the input queue is
full.

Clearing the Input Queue

Switching the power off, or sending a Device Interface Clear signal,
causes commands that are in the input queue, but have not been
executed to be lost.

The Output Queue

The output queue contains responses to query messages. The instrument
transmits any data from the output queue when a controller addresses
the instrument as a talker.
Each response message ends with a carriage return (CR, 0D
(0A ), with EOI=TRUE. If no query is received, or if the query has an
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error, the output queue remains empty.
The Message Available bit (MAV, bit 4) is set in the Status Byte register
whenever there is data in the output queue.

The Error Queue

The error queue is 30 errors long. It is a FIFO queue (first-in first-out).
That is, the first error read is the oldest error to have occurred. A new
error is only put into the queue if it is not already in it.
If more than 29 errors are put into the queue, the message:
-350 <Queue Overflow>
is placed as the last message in the queue.
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System,
& Agilent 8166A Lightwave Multichannel System, Third Edition
to 09 and 0B to 1F
16 16 16
Message Queues
are converted to spaces
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). If EOI is sent
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) and a LF
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