Rohde & Schwarz ESW Series - Page 624

Remote Commands in the Receiver Application
R&S
®
ESW
624User Manual 1177.6298.02 ─ 08
If you want to select the external reference, it must be connected to the R&S ESW.
Parameters:
<Source> INTernal
The internal reference is used (10 MHz)
EXTernal | EXTernal1 | EXT1
The external reference from the "REF INPUT 10 MHZ" connec-
tor is used; if none is available, an error flag is displayed in the
status bar
E10
The external reference from "REF INPUT 1..20 MHZ" connector
is used with a fixed 10 MHZ frequency; if none is available, an
error flag is displayed in the status bar
E100
The external reference from the "REF INPUT 100 MHZ" connec-
tor is used with a fixed 100 MHZ frequency; if none is available,
an error flag is displayed in the status bar
EAUTo
The external reference is used as long as it is available, then the
instrument switches to the internal reference
SYNC
The external reference is used; if none is available, an error flag
is displayed in the status bar
Example:
ROSC:SOUR EXT
Manual operation: See "Reference Frequency Input" on page 332
See "Behavior in case of missing external reference"
on page 332
[SENSe:]ROSCillator:SOURce:EAUTo?
This command queries the current reference type in case you have activated an auto-
matic switch to the internal reference if the external reference is missing.
Return values:
<Reference> INT | EXT
INT
internal reference
EXT
external reference
Example:
SENS:ROSC:SOUR:EAUT?
Queries the currently available reference type.
Usage: Query only
Manual operation: See "Behavior in case of missing external reference"
on page 332
General Instrument Setup