I
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I
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Special Functions
8
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ROSC AUTO
8
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ROSC
AUTO
This function sets the automatic reference oscillator selection switch. When
this switch is on, the instrument automatically selects the frequency standard
to be used.
When the selection switch is on, the instrument will automatically select
an external standard if one is connected to the rear panel 10 MHz REF IN
connector. If there is no external standard connected, the instrument will
select the optional internal standard (Option lE5), if so equipped. Or if there
is no internal standard, the internal 100 MHz VCXO will operate in a free-run
mode.
If ROSC SOURCE (special function number 9) is used to set the reference to a
specihc reference, the automatic reference selection switch will be turned off.
Associated SCPI Commands
ROSCillator:SOURce:AUTO
ON
Turns the automatic
reference
selection swlich on.
ROSCillator:SOURce:AUTO OFF
Turns
the automatic reference
selection swkch oh!
15-13
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General