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Chapter 4 Command Reference
*OPT?
(Option Identification Query)
*OPT?
(Option Identification Query)
*OPT?
Queries the instrument to identify any installed options.
The following options can be installed in the instrument:
Query Response
For example, if only the medium stability timebase option is detected, the response
would be: 001,0.
Comments
This query should be the last query in a terminated program message; otherwise,
error -440 is generated.
4-134
Option 001, Medium Stability Oven Timebase
Option 010, High Stability Oven Timebase
Option 012, Ultra High Stability Oven Timebase
Option 030, 3.0 GHz RF Input Channel (Channel 3)
Option 050, 5.0 GHz RF Input Channel (Channel 3)
A sequence of ASCII-encoded bytes, indicating <timebase option>, <3.0 GHz
RF Input option> terminated with a new line and EOI.
– The <timebase option> is 001, 010, or 0.
Note that the counter responds with 010 for either the high stability or ultra
high stability oven timebase.
– The <3.0 GHz RF Input option> is 030 or 0.
Note that the counter responds with 030 for either the 3.0 GHz or 5.0 GHz RF
Input option.
– A missing option is identified by an ASCII 0 (zero).
Programming Guide
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