Quonset Microwave QM1003-0.5-18-2, User Manual

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QM1003-0.5-18-2 Dual Channel RF Downconverter User Manual
2.10 FREQuency:LO1:EXTernal [1
|
0]
This command allows the user to select between the internal LO1 local oscillator and an externally sup-
plied one.
When 0 is specified, the internal LO1 local oscillator is used by the Dual Channel RF Downconverter.
When 1 is specified, the external LO1 input is used by the Dual Channel RF Downconverter.
Syntax
1
: FREQ : LO1 : EXT Space
0
?
Example
:FREQ:LO1:EXT 0 This command selects the internal LO1 oscillator .
Default Condition
On power up, or when a *RST command is issued, the QM1003-0.5-18-2 returns to the boot state’s
setting. The Dual Channel RF Downconverter default setting is 0.
Query
:FREQ:LO1:EXT? This query returns a 0 or 1 to indicate the selected Dual Channel RF Downcon-
verter reference mode
∙
0 is returned if the internal LO1 oscillator is selected
∙
1 is returned if the external LO1 is selected
Error Message
If the parameter is not in the recognized format, error -102, "Syntax error" occurs.
If the parameter is not 1 or 0, error -222, "Data out of range" occurs.
Quonset Microwave Revision 1.0.0 41