HP 132A, 53131A manual Option Identification Query, Opt?

Chapter 4 Command Reference

*OPT?

(Option Identification Query)

*OPT?

(Option Identification Query)

*OPT?

Query Response

Comments

Queries the instrument to identify any installed options.

The following options can be installed in the instrument:

∙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).

For example, if only the medium stability timebase option is detected, the response would be: 001,0.

This query should be the last query in a terminated program message; otherwise, error -440 is generated.

4-134 Programming Guide