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Chapter 4 Command Reference
:SYSTem Subsystem
4-118 Programming Guide
• At*RST and power-on, the Key Queue is cleared (emptied).
• The Key Queue is unaffected by save/recall.
• Key commands are sequential, but only in terms of processing other key
commands or getting into the Key Queue. The operation performed by the key
command is not guaranteed to be complete before processing of the next non-
key command. Be aware of this when intermixing key commands and non-key
commands.
:SYSTem:KEY:LOG?
This query returns a comma separated list of integers representing all of the entries
in the Key Queue.
• Numeric data transferred as ASCII bytes in <NR1> format.
• A value of -1 indicates the queue is empty.
• Numbers (representing key codes) are separated by commas.
The key codes appear in a last in, first out sequence.
The maximum number of key codes is 500. Each key code has a range of 1 to
30.
• At *RST and power-on, the Key Queue is cleared (emptied).
• The Key Queue is unaffected by save/recall.
:SYSTem:VERSion?
Queries the SCPI version number with which the Counter complies.
• Numeric data transferred as ASCII bytes in <NR2> format.
• The response is an <NR2> formatted numeric value which has the form
YYYY.V, where YYYY represents the year (1992) and the V represents the
approved version for that year (0).
The instrument complies with SCPI Standard 1992.0 and returns this value as the
response to this query.
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Query Response
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Query Response
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