User manual
3Ć5
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NOTE
The oscilloscope stores query responses in the Output Queue. It
empties this queue each time it receives a new command or query
message after an <EOM>. The controller must read a query reĆ
sponse before it sends the next command (or query) or it will lose
responses to earlier queries.
When a controller sends a query, an <EOM>, and a second query,
the digitizing oscilloscope normally clears the first response and
outputs the second while reporting a Query Error (QYE bit in the
ESER) to indicate the lost response. A fast controller, however, may
receive a part or all the first response as well. To avoid this situation,
the controller should always read the response immediately after
sending any terminated query message or send a DCL (Device
Clear) before sending the second query.
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